vllm - 💡(How to fix) Fix [Bug]: KeyError when use lmcache layerwise mode in vllm 0.14.0 [1 comments, 2 participants]
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vllm-project/vllm#37261•Fetched 2026-04-08 00:48:28
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Skyseaee
BillionClawError Message
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return forward_call(*args, **kwargs) (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "<eval_with_key>.2", line 5, in forward (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] unified_attention_with_output = torch.ops.vllm.unified_attention_with_output(query_2, key_2, value, output_3, 'model.layers.0.self_attn.attn'); query_2 = key_2 = value = output_3 = unified_attention_with_output = None (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/torch/_ops.py", line 1255, in call (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return self._op(*args, **kwargs) (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^ (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/attention/utils/kv_transfer_utils.py", line 56, in wrapper (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] connector.save_kv_layer(layer_name, kv_cache, attn_metadata) (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/distributed/kv_transfer/kv_connector/v1/lmcache_connector.py", line 175, in save_kv_layer (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] self._lmcache_engine.save_kv_layer( (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/lmcache/integration/vllm/vllm_v1_adapter.py", line 1074, in save_kv_layer (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] next(layerwise_storer) (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/torch/utils/_contextlib.py", line 38, in generator_context (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] response = gen.send(None) (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^ (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/lmcache/v1/cache_engine.py", line 650, in store_layer (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] memory_objs_multi_layer = self.storage_manager.batched_allocate( (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/lmcache/v1/storage_backend/storage_manager.py", line 359, in batched_allocate (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return self.allocator_backend.batched_allocate( (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/lmcache/v1/storage_backend/local_cpu_backend.py", line 670, in batched_allocate (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] old_mem_objs.append(self.hot_cache[key]) (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ~~~~~~~~~~~~~~^^^^^ (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] KeyError: LayerCacheEngineKey(model_name='mistralai/Mistral-7B-Instruct-v0.2', world_size=1, worker_id=0, chunk_hash=9190147360584713872, dtype=torch.bfloat16, request_configs=None, tags=None, _dtype_str='bfloat16', layer_id=0) (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] During handling of the above exception, another exception occurred: (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] Traceback (most recent call last): (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/kv_connector_model_runner_mixin.py", line 131, in _get_kv_connector_output (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] kv_connector.wait_for_save() (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/distributed/kv_transfer/kv_connector/v1/lmcache_connector.py", line 187, in wait_for_save (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] self._lmcache_engine.wait_for_save() (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/lmcache/integration/vllm/vllm_v1_adapter.py", line 1093, in wait_for_save (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] next(layerwise_storer) (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] StopIteration (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] The above exception was the direct cause of the following exception: (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] Traceback (most recent call last): (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core.py", line 929, in run_engine_core (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] engine_core.run_busy_loop() (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core.py", line 956, in run_busy_loop (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] self._process_engine_step() (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core.py", line 989, in _process_engine_step (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] outputs, model_executed = self.step_fn() (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^ (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core.py", line 491, in step_with_batch_queue (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] exec_model_fut.result() (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/lib/python3.12/concurrent/futures/_base.py", line 449, in result (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return self.__get_result() (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^ (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/lib/python3.12/concurrent/futures/_base.py", line 401, in __get_result (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] raise self._exception (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/executor/uniproc_executor.py", line 79, in collective_rpc (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] result = run_method(self.driver_worker, method, args, kwargs) (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/serial_utils.py", line 461, in run_method (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return func(*args, **kwargs) (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^ (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/worker_base.py", line 365, in execute_model (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return self.worker.execute_model(scheduler_output) (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/torch/utils/_contextlib.py", line 120, in decorate_context (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return func(*args, **kwargs) (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^ (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/gpu_worker.py", line 629, in execute_model (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] output = self.model_runner.execute_model( (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/torch/utils/_contextlib.py", line 120, in decorate_context (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return func(*args, **kwargs) (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^ (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/gpu_model_runner.py", line 3289, in execute_model (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] self.maybe_get_kv_connector_output(scheduler_output) as kv_connector_output, (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/lib/python3.12/contextlib.py", line 158, in exit (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] self.gen.throw(value) (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] RuntimeError: generator raised StopIteration (EngineCore_DP0 pid=17830) Process EngineCore_DP0: (APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] AsyncLLM output_handler failed. (APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] Traceback (most recent call last): (APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/async_llm.py", line 502, in output_handler (APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] outputs = await engine_core.get_output_async() (APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ (APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core_client.py", line 899, in get_output_async (APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] raise self._format_exception(outputs) from None (APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] vllm.v1.engine.exceptions.EngineDeadError: EngineCore encountered an issue. See stack trace (above) for the root cause. (APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] Error in chat completion stream generator. (APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] Traceback (most recent call last): (APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] File "/usr/local/lib/python3.12/dist-packages/vllm/entrypoints/openai/serving_chat.py", line 715, in chat_completion_stream_generator (APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] async for res in result_generator: (APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/async_llm.py", line 437, in generate (APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] out = q.get_nowait() or await q.get() (APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] ^^^^^^^^^^^^^ (APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/output_processor.py", line 77, in get (APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] raise output (APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/async_llm.py", line 502, in output_handler (APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] outputs = await engine_core.get_output_async() (APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ (APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core_client.py", line 899, in get_output_async (APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] raise self._format_exception(outputs) from None (APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] vllm.v1.engine.exceptions.EngineDeadError: EngineCore encountered an issue. See stack trace (above) for the root cause. (EngineCore_DP0 pid=17830) Traceback (most recent call last): (EngineCore_DP0 pid=17830) File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/kv_connector_model_runner_mixin.py", line 128, in _get_kv_connector_output (EngineCore_DP0 pid=17830) yield output (EngineCore_DP0 pid=17830) File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/gpu_model_runner.py", line 3291, in execute_model (EngineCore_DP0 pid=17830) model_output = self._model_forward(
Root Cause
After serveral requests ( about 500 requests each request about 4000 with input len avg in 16 batch size), i encounter an error
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return forward_call(*args, **kwargs)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "<eval_with_key>.2", line 5, in forward
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] unified_attention_with_output = torch.ops.vllm.unified_attention_with_output(query_2, key_2, value, output_3, 'model.layers.0.self_attn.attn'); query_2 = key_2 = value = output_3 = unified_attention_with_output = None
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/torch/_ops.py", line 1255, in __call__
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return self._op(*args, **kwargs)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/attention/utils/kv_transfer_utils.py", line 56, in wrapper
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] connector.save_kv_layer(layer_name, kv_cache, attn_metadata)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/distributed/kv_transfer/kv_connector/v1/lmcache_connector.py", line 175, in save_kv_layer
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] self._lmcache_engine.save_kv_layer(
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/lmcache/integration/vllm/vllm_v1_adapter.py", line 1074, in save_kv_layer
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] next(layerwise_storer)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/torch/utils/_contextlib.py", line 38, in generator_context
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] response = gen.send(None)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/lmcache/v1/cache_engine.py", line 650, in store_layer
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] memory_objs_multi_layer = self.storage_manager.batched_allocate(
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/lmcache/v1/storage_backend/storage_manager.py", line 359, in batched_allocate
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return self.allocator_backend.batched_allocate(
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/lmcache/v1/storage_backend/local_cpu_backend.py", line 670, in batched_allocate
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] old_mem_objs.append(self.hot_cache[key])
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ~~~~~~~~~~~~~~^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] KeyError: LayerCacheEngineKey(model_name='mistralai/Mistral-7B-Instruct-v0.2', world_size=1, worker_id=0, chunk_hash=9190147360584713872, dtype=torch.bfloat16, request_configs=None, tags=None, _dtype_str='bfloat16', layer_id=0)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938]
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] During handling of the above exception, another exception occurred:
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938]
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] Traceback (most recent call last):
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/kv_connector_model_runner_mixin.py", line 131, in _get_kv_connector_output
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] kv_connector.wait_for_save()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/distributed/kv_transfer/kv_connector/v1/lmcache_connector.py", line 187, in wait_for_save
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] self._lmcache_engine.wait_for_save()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/lmcache/integration/vllm/vllm_v1_adapter.py", line 1093, in wait_for_save
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] next(layerwise_storer)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] StopIteration
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938]
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] The above exception was the direct cause of the following exception:
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938]
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] Traceback (most recent call last):
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core.py", line 929, in run_engine_core
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] engine_core.run_busy_loop()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core.py", line 956, in run_busy_loop
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] self._process_engine_step()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core.py", line 989, in _process_engine_step
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] outputs, model_executed = self.step_fn()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core.py", line 491, in step_with_batch_queue
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] exec_model_fut.result()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/lib/python3.12/concurrent/futures/_base.py", line 449, in result
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return self.__get_result()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/lib/python3.12/concurrent/futures/_base.py", line 401, in __get_result
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] raise self._exception
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/executor/uniproc_executor.py", line 79, in collective_rpc
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] result = run_method(self.driver_worker, method, args, kwargs)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/serial_utils.py", line 461, in run_method
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return func(*args, **kwargs)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/worker_base.py", line 365, in execute_model
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return self.worker.execute_model(scheduler_output)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/torch/utils/_contextlib.py", line 120, in decorate_context
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return func(*args, **kwargs)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/gpu_worker.py", line 629, in execute_model
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] output = self.model_runner.execute_model(
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/torch/utils/_contextlib.py", line 120, in decorate_context
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return func(*args, **kwargs)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/gpu_model_runner.py", line 3289, in execute_model
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] self.maybe_get_kv_connector_output(scheduler_output) as kv_connector_output,
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/lib/python3.12/contextlib.py", line 158, in __exit__
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] self.gen.throw(value)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] RuntimeError: generator raised StopIteration
(EngineCore_DP0 pid=17830) Process EngineCore_DP0:
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] AsyncLLM output_handler failed.
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] Traceback (most recent call last):
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/async_llm.py", line 502, in output_handler
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] outputs = await engine_core.get_output_async()
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core_client.py", line 899, in get_output_async
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] raise self._format_exception(outputs) from None
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] vllm.v1.engine.exceptions.EngineDeadError: EngineCore encountered an issue. See stack trace (above) for the root cause.
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] Error in chat completion stream generator.
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] Traceback (most recent call last):
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] File "/usr/local/lib/python3.12/dist-packages/vllm/entrypoints/openai/serving_chat.py", line 715, in chat_completion_stream_generator
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] async for res in result_generator:
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/async_llm.py", line 437, in generate
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] out = q.get_nowait() or await q.get()
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] ^^^^^^^^^^^^^
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/output_processor.py", line 77, in get
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] raise output
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/async_llm.py", line 502, in output_handler
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] outputs = await engine_core.get_output_async()
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core_client.py", line 899, in get_output_async
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] raise self._format_exception(outputs) from None
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] vllm.v1.engine.exceptions.EngineDeadError: EngineCore encountered an issue. See stack trace (above) for the root cause.
(EngineCore_DP0 pid=17830) Traceback (most recent call last):
(EngineCore_DP0 pid=17830) File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/kv_connector_model_runner_mixin.py", line 128, in _get_kv_connector_output
(EngineCore_DP0 pid=17830) yield output
(EngineCore_DP0 pid=17830) File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/gpu_model_runner.py", line 3291, in execute_model
(EngineCore_DP0 pid=17830) model_output = self._model_forward(The important part is
old_mem_objs.append(self.hot_cache[key]) (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ~~~~~~~~~~~~~~^^^^^ (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] KeyError: LayerCacheEngineKey(model_name='mistralai/Mistral-7B-Instruct-v0.2', world_size=1, worker_id=0, chunk_hash=9190147360584713872, dtype=torch.bfloat16, request_configs=None, tags=None, _dtype_str='bfloat16', layer_id=0)
Fix Action
Fix / Workaround
============================== CPU Info
Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Address sizes: 46 bits physical, 57 bits virtual Byte Order: Little Endian CPU(s): 192 On-line CPU(s) list: 0-191 Vendor ID: GenuineIntel Model name: Intel(R) Xeon(R) Platinum 8468 CPU family: 6 Model: 143 Thread(s) per core: 2 Core(s) per socket: 48 Socket(s): 2 Stepping: 8 CPU max MHz: 3800.0000 CPU min MHz: 800.0000 BogoMIPS: 4200.00 Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cat_l2 cdp_l3 invpcid_single cdp_l2 ssbd mba ibrs ibpb stibp ibrs_enhanced fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a avx512f avx512dq rdseed adx smap avx512ifma clflushopt clwb intel_pt avx512cd sha_ni avx512bw avx512vlxsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local split_lock_detect avx_vnni avx512_bf16 wbnoinvd dtherm ida arat pln pts hwp hwp_act_window hwp_epp hwp_pkg_req avx512vbmi umip pku ospke waitpkg avx512_vbmi2 gfni vaes vpclmulqdq avx512_vnni avx512_bitalg tme avx512_vpopcntdq la57 rdpid bus_lock_detect cldemote movdiri movdir64b enqcmd fsrm md_clear serialize tsxldtrk pconfig arch_lbr avx512_fp16 flush_l1d arch_capabilities L1d cache: 4.5 MiB (96 instances) L1i cache: 3 MiB (96 instances) L2 cache: 192 MiB (96 instances) L3 cache: 210 MiB (2 instances) NUMA node(s): 2 NUMA node0 CPU(s): 0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94,96,98,100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134,136,138,140,142,144,146,148,150,152,154,156,158,160,162,164,166,168,170,172,174,176,178,180,182,184,186,188,190 NUMA node1 CPU(s): 1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,43,45,47,49,51,53,55,57,59,61,63,65,67,69,71,73,75,77,79,81,83,85,87,89,91,93,95,97,99,101,103,105,107,109,111,113,115,117,119,121,123,125,127,129,131,133,135,137,139,141,143,145,147,149,151,153,155,157,159,161,163,165,167,169,171,173,175,177,179,181,183,185,187,189,191 Vulnerability Gather data sampling: Not affected Vulnerability Itlb multihit: Not affected Vulnerability L1tf: Not affected Vulnerability Mds: Not affected Vulnerability Meltdown: Not affected Vulnerability Mmio stale data: Not affected Vulnerability Retbleed: Not affected Vulnerability Spec rstack overflow: Not affected Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl and seccomp Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization Vulnerability Spectre v2: Mitigation; Enhanced IBRS, IBPB conditional, RSB filling, PBRSB-eIBRS SW sequence Vulnerability Srbds: Not affected Vulnerability Tsx async abort: Not affected
Code Example
Collecting environment information...
==============================
System Info
==============================
OS : Ubuntu 22.04.5 LTS (x86_64)
GCC version : (Ubuntu 11.4.0-1ubuntu1~22.04.2) 11.4.0
Clang version : Could not collect
CMake version : Could not collect
Libc version : glibc-2.35
==============================
PyTorch Info
==============================
PyTorch version : 2.9.1+cu129
Is debug build : False
CUDA used to build PyTorch : 12.9
ROCM used to build PyTorch : N/A
==============================
Python Environment
==============================
Python version : 3.12.12 (main, Oct 10 2025, 08:52:57) [GCC 11.4.0] (64-bit runtime)
Python platform : Linux-5.15.0-125.006-shopee-x86_64-with-glibc2.35
==============================
CUDA / GPU Info
==============================
Is CUDA available : True
CUDA runtime version : 12.9.86
CUDA_MODULE_LOADING set to :
GPU models and configuration :
GPU 0: NVIDIA H100 80GB HBM3
GPU 1: NVIDIA H100 80GB HBM3
Nvidia driver version : 550.90.07
cuDNN version : Could not collect
HIP runtime version : N/A
MIOpen runtime version : N/A
Is XNNPACK available : True
==============================
CPU Info
==============================
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 46 bits physical, 57 bits virtual
Byte Order: Little Endian
CPU(s): 192
On-line CPU(s) list: 0-191
Vendor ID: GenuineIntel
Model name: Intel(R) Xeon(R) Platinum 8468
CPU family: 6
Model: 143
Thread(s) per core: 2
Core(s) per socket: 48
Socket(s): 2
Stepping: 8
CPU max MHz: 3800.0000
CPU min MHz: 800.0000
BogoMIPS: 4200.00
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cat_l2 cdp_l3 invpcid_single cdp_l2 ssbd mba ibrs ibpb stibp ibrs_enhanced fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a avx512f avx512dq rdseed adx smap avx512ifma clflushopt clwb intel_pt avx512cd sha_ni avx512bw avx512vlxsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local split_lock_detect avx_vnni avx512_bf16 wbnoinvd dtherm ida arat pln pts hwp hwp_act_window hwp_epp hwp_pkg_req avx512vbmi umip pku ospke waitpkg avx512_vbmi2 gfni vaes vpclmulqdq avx512_vnni avx512_bitalg tme avx512_vpopcntdq la57 rdpid bus_lock_detect cldemote movdiri movdir64b enqcmd fsrm md_clear serialize tsxldtrk pconfig arch_lbr avx512_fp16 flush_l1d arch_capabilities
L1d cache: 4.5 MiB (96 instances)
L1i cache: 3 MiB (96 instances)
L2 cache: 192 MiB (96 instances)
L3 cache: 210 MiB (2 instances)
NUMA node(s): 2
NUMA node0 CPU(s): 0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94,96,98,100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134,136,138,140,142,144,146,148,150,152,154,156,158,160,162,164,166,168,170,172,174,176,178,180,182,184,186,188,190
NUMA node1 CPU(s): 1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,43,45,47,49,51,53,55,57,59,61,63,65,67,69,71,73,75,77,79,81,83,85,87,89,91,93,95,97,99,101,103,105,107,109,111,113,115,117,119,121,123,125,127,129,131,133,135,137,139,141,143,145,147,149,151,153,155,157,159,161,163,165,167,169,171,173,175,177,179,181,183,185,187,189,191
Vulnerability Gather data sampling: Not affected
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Not affected
Vulnerability Mds: Not affected
Vulnerability Meltdown: Not affected
Vulnerability Mmio stale data: Not affected
Vulnerability Retbleed: Not affected
Vulnerability Spec rstack overflow: Not affected
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl and seccomp
Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Vulnerability Spectre v2: Mitigation; Enhanced IBRS, IBPB conditional, RSB filling, PBRSB-eIBRS SW sequence
Vulnerability Srbds: Not affected
Vulnerability Tsx async abort: Not affected
==============================
Versions of relevant libraries
==============================
[pip3] flashinfer-python==0.5.3
[pip3] numpy==2.2.0
[pip3] nvidia-cublas-cu12==12.9.1.4
[pip3] nvidia-cuda-cupti-cu12==12.9.79
[pip3] nvidia-cuda-nvrtc-cu12==12.9.86
[pip3] nvidia-cuda-runtime-cu12==12.9.79
[pip3] nvidia-cudnn-cu12==9.10.2.21
[pip3] nvidia-cudnn-frontend==1.17.0
[pip3] nvidia-cufft-cu12==11.4.1.4
[pip3] nvidia-cufile-cu12==1.14.1.1
[pip3] nvidia-curand-cu12==10.3.10.19
[pip3] nvidia-cusolver-cu12==11.7.5.82
[pip3] nvidia-cusparse-cu12==12.5.10.65
[pip3] nvidia-cusparselt-cu12==0.7.1
[pip3] nvidia-cutlass-dsl==4.3.5
[pip3] nvidia-ml-py==13.590.44
[pip3] nvidia-nccl-cu12==2.27.5
[pip3] nvidia-nvjitlink-cu12==12.9.86
[pip3] nvidia-nvshmem-cu12==3.3.20
[pip3] nvidia-nvtx-cu12==12.9.79
[pip3] pyzmq==27.1.0
[pip3] torch==2.9.1+cu129
[pip3] torchaudio==2.9.1+cu129
[pip3] torchvision==0.24.1+cu129
[pip3] transformers==4.57.6
[pip3] triton==3.5.1
[conda] Could not collect
==============================
vLLM Info
==============================
ROCM Version : Could not collect
vLLM Version : 0.14.1.dev20+g40a0bbfca (git sha: 40a0bbfca)
vLLM Build Flags:
CUDA Archs: Not Set; ROCm: Disabled
GPU Topology:
GPU0 GPU1 NIC0 NIC1 NIC2 NIC3 NIC4 NIC5 NIC6 NIC7 NIC8 NIC9 NIC10 NIC11 NIC12 NIC13 NIC14 NIC15 NIC16 NIC17 NIC18 NIC19 NIC20 CPU Affinity NUMA Affinity GPU NUMA ID
GPU0 X NV18 SYS SYS PIX PIX PIX NODE PIX PIX NODE NODE NODE NODE SYS SYS SYS SYS SYS SYS SYS SYS NODE 47,49,51,53 1 N/A
GPU1 NV18 X SYS SYS NODE NODE NODE PIX NODE NODE PIX PIX PIX PIX SYS SYS SYS SYS SYS SYS SYS SYS NODE 47,49,51,53 1 N/A
NIC0 SYS SYS X NODE SYS SYS SYS SYS SYS SYS SYS SYS SYS SYS NODE NODE NODE NODE PIX PIX PIX PIX SYS
NIC1 SYS SYS NODE X SYS SYS SYS SYS SYS SYS SYS SYS SYS SYS PIX PIX PIX PIX NODE NODE NODE NODE SYS
NIC2 PIX NODE SYS SYS X PIX PIX NODE PIX PIX NODE NODE NODE NODE SYS SYS SYS SYS SYS SYS SYS SYS NODE
NIC3 PIX NODE SYS SYS PIX X PIX NODE PIX PIX NODE NODE NODE NODE SYS SYS SYS SYS SYS SYS SYS SYS NODE
NIC4 PIX NODE SYS SYS PIX PIX X NODE PIX PIX NODE NODE NODE NODE SYS SYS SYS SYS SYS SYS SYS SYS NODE
NIC5 NODE PIX SYS SYS NODE NODE NODE X NODE NODE PIX PIX PIX PIX SYS SYS SYS SYS SYS SYS SYS SYS NODE
NIC6 PIX NODE SYS SYS PIX PIX PIX NODE X PIX NODE NODE NODE NODE SYS SYS SYS SYS SYS SYS SYS SYS NODE
NIC7 PIX NODE SYS SYS PIX PIX PIX NODE PIX X NODE NODE NODE NODE SYS SYS SYS SYS SYS SYS SYS SYS NODE
NIC8 NODE PIX SYS SYS NODE NODE NODE PIX NODE NODE X PIX PIX PIX SYS SYS SYS SYS SYS SYS SYS SYS NODE
NIC9 NODE PIX SYS SYS NODE NODE NODE PIX NODE NODE PIX X PIX PIX SYS SYS SYS SYS SYS SYS SYS SYS NODE
NIC10 NODE PIX SYS SYS NODE NODE NODE PIX NODE NODE PIX PIX X PIX SYS SYS SYS SYS SYS SYS SYS SYS NODE
NIC11 NODE PIX SYS SYS NODE NODE NODE PIX NODE NODE PIX PIX PIX X SYS SYS SYS SYS SYS SYS SYS SYS NODE
NIC12 SYS SYS NODE PIX SYS SYS SYS SYS SYS SYS SYS SYS SYS SYS X PIX PIX PIX NODE NODE NODE NODE SYS
NIC13 SYS SYS NODE PIX SYS SYS SYS SYS SYS SYS SYS SYS SYS SYS PIX X PIX PIX NODE NODE NODE NODE SYS
NIC14 SYS SYS NODE PIX SYS SYS SYS SYS SYS SYS SYS SYS SYS SYS PIX PIX X PIX NODE NODE NODE NODE SYS
NIC15 SYS SYS NODE PIX SYS SYS SYS SYS SYS SYS SYS SYS SYS SYS PIX PIX PIX X NODE NODE NODE NODE SYS
NIC16 SYS SYS PIX NODE SYS SYS SYS SYS SYS SYS SYS SYS SYS SYS NODE NODE NODE NODE X PIX PIX PIX SYS
NIC17 SYS SYS PIX NODE SYS SYS SYS SYS SYS SYS SYS SYS SYS SYS NODE NODE NODE NODE PIX X PIX PIX SYS
NIC18 SYS SYS PIX NODE SYS SYS SYS SYS SYS SYS SYS SYS SYS SYS NODE NODE NODE NODE PIX PIX X PIX SYS
NIC19 SYS SYS PIX NODE SYS SYS SYS SYS SYS SYS SYS SYS SYS SYS NODE NODE NODE NODE PIX PIX PIX X SYS
NIC20 NODE NODE SYS SYS NODE NODE NODE NODE NODE NODE NODE NODE NODE NODE SYS SYS SYS SYS SYS SYS SYS SYS X
Legend:
X = Self
SYS = Connection traversing PCIe as well as the SMP interconnect between NUMA nodes (e.g., QPI/UPI)
NODE = Connection traversing PCIe as well as the interconnect between PCIe Host Bridges within a NUMA node
PHB = Connection traversing PCIe as well as a PCIe Host Bridge (typically the CPU)
PXB = Connection traversing multiple PCIe bridges (without traversing the PCIe Host Bridge)
PIX = Connection traversing at most a single PCIe bridge
NV# = Connection traversing a bonded set of # NVLinks
NIC Legend:
NIC0: mlx5_0
NIC1: mlx5_1
NIC2: mlx5_2
NIC3: mlx5_3
NIC4: mlx5_4
NIC5: mlx5_5
NIC6: mlx5_6
NIC7: mlx5_7
NIC8: mlx5_8
NIC9: mlx5_9
NIC10: mlx5_10
NIC11: mlx5_11
NIC12: mlx5_12
NIC13: mlx5_13
NIC14: mlx5_14
NIC15: mlx5_15
NIC16: mlx5_16
NIC17: mlx5_17
NIC18: mlx5_18
NIC19: mlx5_19
NIC20: mlx5_bond_0
==============================
Environment Variables
==============================
NVIDIA_VISIBLE_DEVICES=5,7
NVIDIA_REQUIRE_CUDA=cuda>=12.9 brand=unknown,driver>=535,driver<536 brand=grid,driver>=535,driver<536 brand=tesla,driver>=535,driver<536 brand=nvidia,driver>=535,driver<536 brand=quadro,driver>=535,driver<536 brand=quadrortx,driver>=535,driver<536 brand=nvidiartx,driver>=535,driver<536 brand=vapps,driver>=535,driver<536 brand=vpc,driver>=535,driver<536 brand=vcs,driver>=535,driver<536 brand=vws,driver>=535,driver<536 brand=cloudgaming,driver>=535,driver<536 brand=unknown,driver>=550,driver<551 brand=grid,driver>=550,driver<551 brand=tesla,driver>=550,driver<551 brand=nvidia,driver>=550,driver<551 brand=quadro,driver>=550,driver<551 brand=quadrortx,driver>=550,driver<551 brand=nvidiartx,driver>=550,driver<551 brand=vapps,driver>=550,driver<551 brand=vpc,driver>=550,driver<551 brand=vcs,driver>=550,driver<551 brand=vws,driver>=550,driver<551 brand=cloudgaming,driver>=550,driver<551 brand=unknown,driver>=560,driver<561 brand=grid,driver>=560,driver<561 brand=tesla,driver>=560,driver<561 brand=nvidia,driver>=560,driver<561 brand=quadro,driver>=560,driver<561 brand=quadrortx,driver>=560,driver<561 brand=nvidiartx,driver>=560,driver<561 brand=vapps,driver>=560,driver<561 brand=vpc,driver>=560,driver<561 brand=vcs,driver>=560,driver<561 brand=vws,driver>=560,driver<561 brand=cloudgaming,driver>=560,driver<561 brand=unknown,driver>=565,driver<566 brand=grid,driver>=565,driver<566 brand=tesla,driver>=565,driver<566 brand=nvidia,driver>=565,driver<566 brand=quadro,driver>=565,driver<566 brand=quadrortx,driver>=565,driver<566 brand=nvidiartx,driver>=565,driver<566 brand=vapps,driver>=565,driver<566 brand=vpc,driver>=565,driver<566 brand=vcs,driver>=565,driver<566 brand=vws,driver>=565,driver<566 brand=cloudgaming,driver>=565,driver<566 brand=unknown,driver>=570,driver<571 brand=grid,driver>=570,driver<571 brand=tesla,driver>=570,driver<571 brand=nvidia,driver>=570,driver<571 brand=quadro,driver>=570,driver<571 brand=quadrortx,driver>=570,driver<571 brand=nvidiartx,driver>=570,driver<571 brand=vapps,driver>=570,driver<571 brand=vpc,driver>=570,driver<571 brand=vcs,driver>=570,driver<571 brand=vws,driver>=570,driver<571 brand=cloudgaming,driver>=570,driver<571
NVIDIA_DRIVER_CAPABILITIES=compute,utility
CUDA_VERSION=12.9.1
CUDA_VISIBLE_DEVICES=0,1
CUDA_VISIBLE_DEVICES=0,1
NVIDIA_DISABLE_REQUIRE=true
LD_LIBRARY_PATH=/usr/local/nvidia/lib64:/usr/local/cuda/lib64:/usr/local/cuda/lib64
PYTORCH_NVML_BASED_CUDA_CHECK=1
TORCHINDUCTOR_COMPILE_THREADS=1
---
LMCACHE_USE_LAYERWISE=True PYTHONHASHSEED=0 LMCACHE_CONFIG_FILE=lmcache_config.yaml CUDA_VISIBLE_DEVICES=0 vllm serve mistralai/Mistral-7B-Instruct-v0.2 --gpu-memory-utilization 0.8 --port 8000 --kv-transfer-config '{"kv_connector":"LMCacheConnectorV1", "kv_role":"kv_both"}'
---
chunk_size: 16local_cpu: trueremote_url: "lm://localhost:8100"max_local_cpu_size: 20.0remote_serde: "naive"
---
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return forward_call(*args, **kwargs)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "<eval_with_key>.2", line 5, in forward
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] unified_attention_with_output = torch.ops.vllm.unified_attention_with_output(query_2, key_2, value, output_3, 'model.layers.0.self_attn.attn'); query_2 = key_2 = value = output_3 = unified_attention_with_output = None
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/torch/_ops.py", line 1255, in __call__
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return self._op(*args, **kwargs)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/attention/utils/kv_transfer_utils.py", line 56, in wrapper
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] connector.save_kv_layer(layer_name, kv_cache, attn_metadata)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/distributed/kv_transfer/kv_connector/v1/lmcache_connector.py", line 175, in save_kv_layer
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] self._lmcache_engine.save_kv_layer(
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/lmcache/integration/vllm/vllm_v1_adapter.py", line 1074, in save_kv_layer
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] next(layerwise_storer)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/torch/utils/_contextlib.py", line 38, in generator_context
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] response = gen.send(None)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/lmcache/v1/cache_engine.py", line 650, in store_layer
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] memory_objs_multi_layer = self.storage_manager.batched_allocate(
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/lmcache/v1/storage_backend/storage_manager.py", line 359, in batched_allocate
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return self.allocator_backend.batched_allocate(
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/lmcache/v1/storage_backend/local_cpu_backend.py", line 670, in batched_allocate
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] old_mem_objs.append(self.hot_cache[key])
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ~~~~~~~~~~~~~~^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] KeyError: LayerCacheEngineKey(model_name='mistralai/Mistral-7B-Instruct-v0.2', world_size=1, worker_id=0, chunk_hash=9190147360584713872, dtype=torch.bfloat16, request_configs=None, tags=None, _dtype_str='bfloat16', layer_id=0)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938]
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] During handling of the above exception, another exception occurred:
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938]
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] Traceback (most recent call last):
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/kv_connector_model_runner_mixin.py", line 131, in _get_kv_connector_output
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] kv_connector.wait_for_save()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/distributed/kv_transfer/kv_connector/v1/lmcache_connector.py", line 187, in wait_for_save
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] self._lmcache_engine.wait_for_save()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/lmcache/integration/vllm/vllm_v1_adapter.py", line 1093, in wait_for_save
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] next(layerwise_storer)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] StopIteration
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938]
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] The above exception was the direct cause of the following exception:
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938]
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] Traceback (most recent call last):
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core.py", line 929, in run_engine_core
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] engine_core.run_busy_loop()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core.py", line 956, in run_busy_loop
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] self._process_engine_step()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core.py", line 989, in _process_engine_step
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] outputs, model_executed = self.step_fn()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core.py", line 491, in step_with_batch_queue
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] exec_model_fut.result()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/lib/python3.12/concurrent/futures/_base.py", line 449, in result
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return self.__get_result()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/lib/python3.12/concurrent/futures/_base.py", line 401, in __get_result
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] raise self._exception
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/executor/uniproc_executor.py", line 79, in collective_rpc
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] result = run_method(self.driver_worker, method, args, kwargs)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/serial_utils.py", line 461, in run_method
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return func(*args, **kwargs)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/worker_base.py", line 365, in execute_model
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return self.worker.execute_model(scheduler_output)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/torch/utils/_contextlib.py", line 120, in decorate_context
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return func(*args, **kwargs)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/gpu_worker.py", line 629, in execute_model
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] output = self.model_runner.execute_model(
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/torch/utils/_contextlib.py", line 120, in decorate_context
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return func(*args, **kwargs)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/gpu_model_runner.py", line 3289, in execute_model
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] self.maybe_get_kv_connector_output(scheduler_output) as kv_connector_output,
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/lib/python3.12/contextlib.py", line 158, in __exit__
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] self.gen.throw(value)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] RuntimeError: generator raised StopIteration
(EngineCore_DP0 pid=17830) Process EngineCore_DP0:
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] AsyncLLM output_handler failed.
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] Traceback (most recent call last):
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/async_llm.py", line 502, in output_handler
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] outputs = await engine_core.get_output_async()
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core_client.py", line 899, in get_output_async
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] raise self._format_exception(outputs) from None
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] vllm.v1.engine.exceptions.EngineDeadError: EngineCore encountered an issue. See stack trace (above) for the root cause.
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] Error in chat completion stream generator.
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] Traceback (most recent call last):
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] File "/usr/local/lib/python3.12/dist-packages/vllm/entrypoints/openai/serving_chat.py", line 715, in chat_completion_stream_generator
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] async for res in result_generator:
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/async_llm.py", line 437, in generate
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] out = q.get_nowait() or await q.get()
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] ^^^^^^^^^^^^^
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/output_processor.py", line 77, in get
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] raise output
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/async_llm.py", line 502, in output_handler
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] outputs = await engine_core.get_output_async()
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core_client.py", line 899, in get_output_async
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] raise self._format_exception(outputs) from None
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] vllm.v1.engine.exceptions.EngineDeadError: EngineCore encountered an issue. See stack trace (above) for the root cause.
(EngineCore_DP0 pid=17830) Traceback (most recent call last):
(EngineCore_DP0 pid=17830) File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/kv_connector_model_runner_mixin.py", line 128, in _get_kv_connector_output
(EngineCore_DP0 pid=17830) yield output
(EngineCore_DP0 pid=17830) File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/gpu_model_runner.py", line 3291, in execute_model
(EngineCore_DP0 pid=17830) model_output = self._model_forward(RAW_BUFFERClick to expand / collapse
Your current environment
<details> <summary>The output of <code>python collect_env.py</code></summary>Collecting environment information...
==============================
System Info
==============================
OS : Ubuntu 22.04.5 LTS (x86_64)
GCC version : (Ubuntu 11.4.0-1ubuntu1~22.04.2) 11.4.0
Clang version : Could not collect
CMake version : Could not collect
Libc version : glibc-2.35
==============================
PyTorch Info
==============================
PyTorch version : 2.9.1+cu129
Is debug build : False
CUDA used to build PyTorch : 12.9
ROCM used to build PyTorch : N/A
==============================
Python Environment
==============================
Python version : 3.12.12 (main, Oct 10 2025, 08:52:57) [GCC 11.4.0] (64-bit runtime)
Python platform : Linux-5.15.0-125.006-shopee-x86_64-with-glibc2.35
==============================
CUDA / GPU Info
==============================
Is CUDA available : True
CUDA runtime version : 12.9.86
CUDA_MODULE_LOADING set to :
GPU models and configuration :
GPU 0: NVIDIA H100 80GB HBM3
GPU 1: NVIDIA H100 80GB HBM3
Nvidia driver version : 550.90.07
cuDNN version : Could not collect
HIP runtime version : N/A
MIOpen runtime version : N/A
Is XNNPACK available : True
==============================
CPU Info
==============================
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 46 bits physical, 57 bits virtual
Byte Order: Little Endian
CPU(s): 192
On-line CPU(s) list: 0-191
Vendor ID: GenuineIntel
Model name: Intel(R) Xeon(R) Platinum 8468
CPU family: 6
Model: 143
Thread(s) per core: 2
Core(s) per socket: 48
Socket(s): 2
Stepping: 8
CPU max MHz: 3800.0000
CPU min MHz: 800.0000
BogoMIPS: 4200.00
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cat_l2 cdp_l3 invpcid_single cdp_l2 ssbd mba ibrs ibpb stibp ibrs_enhanced fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid cqm rdt_a avx512f avx512dq rdseed adx smap avx512ifma clflushopt clwb intel_pt avx512cd sha_ni avx512bw avx512vlxsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local split_lock_detect avx_vnni avx512_bf16 wbnoinvd dtherm ida arat pln pts hwp hwp_act_window hwp_epp hwp_pkg_req avx512vbmi umip pku ospke waitpkg avx512_vbmi2 gfni vaes vpclmulqdq avx512_vnni avx512_bitalg tme avx512_vpopcntdq la57 rdpid bus_lock_detect cldemote movdiri movdir64b enqcmd fsrm md_clear serialize tsxldtrk pconfig arch_lbr avx512_fp16 flush_l1d arch_capabilities
L1d cache: 4.5 MiB (96 instances)
L1i cache: 3 MiB (96 instances)
L2 cache: 192 MiB (96 instances)
L3 cache: 210 MiB (2 instances)
NUMA node(s): 2
NUMA node0 CPU(s): 0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94,96,98,100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134,136,138,140,142,144,146,148,150,152,154,156,158,160,162,164,166,168,170,172,174,176,178,180,182,184,186,188,190
NUMA node1 CPU(s): 1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,43,45,47,49,51,53,55,57,59,61,63,65,67,69,71,73,75,77,79,81,83,85,87,89,91,93,95,97,99,101,103,105,107,109,111,113,115,117,119,121,123,125,127,129,131,133,135,137,139,141,143,145,147,149,151,153,155,157,159,161,163,165,167,169,171,173,175,177,179,181,183,185,187,189,191
Vulnerability Gather data sampling: Not affected
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Not affected
Vulnerability Mds: Not affected
Vulnerability Meltdown: Not affected
Vulnerability Mmio stale data: Not affected
Vulnerability Retbleed: Not affected
Vulnerability Spec rstack overflow: Not affected
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl and seccomp
Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Vulnerability Spectre v2: Mitigation; Enhanced IBRS, IBPB conditional, RSB filling, PBRSB-eIBRS SW sequence
Vulnerability Srbds: Not affected
Vulnerability Tsx async abort: Not affected
==============================
Versions of relevant libraries
==============================
[pip3] flashinfer-python==0.5.3
[pip3] numpy==2.2.0
[pip3] nvidia-cublas-cu12==12.9.1.4
[pip3] nvidia-cuda-cupti-cu12==12.9.79
[pip3] nvidia-cuda-nvrtc-cu12==12.9.86
[pip3] nvidia-cuda-runtime-cu12==12.9.79
[pip3] nvidia-cudnn-cu12==9.10.2.21
[pip3] nvidia-cudnn-frontend==1.17.0
[pip3] nvidia-cufft-cu12==11.4.1.4
[pip3] nvidia-cufile-cu12==1.14.1.1
[pip3] nvidia-curand-cu12==10.3.10.19
[pip3] nvidia-cusolver-cu12==11.7.5.82
[pip3] nvidia-cusparse-cu12==12.5.10.65
[pip3] nvidia-cusparselt-cu12==0.7.1
[pip3] nvidia-cutlass-dsl==4.3.5
[pip3] nvidia-ml-py==13.590.44
[pip3] nvidia-nccl-cu12==2.27.5
[pip3] nvidia-nvjitlink-cu12==12.9.86
[pip3] nvidia-nvshmem-cu12==3.3.20
[pip3] nvidia-nvtx-cu12==12.9.79
[pip3] pyzmq==27.1.0
[pip3] torch==2.9.1+cu129
[pip3] torchaudio==2.9.1+cu129
[pip3] torchvision==0.24.1+cu129
[pip3] transformers==4.57.6
[pip3] triton==3.5.1
[conda] Could not collect
==============================
vLLM Info
==============================
ROCM Version : Could not collect
vLLM Version : 0.14.1.dev20+g40a0bbfca (git sha: 40a0bbfca)
vLLM Build Flags:
CUDA Archs: Not Set; ROCm: Disabled
GPU Topology:
GPU0 GPU1 NIC0 NIC1 NIC2 NIC3 NIC4 NIC5 NIC6 NIC7 NIC8 NIC9 NIC10 NIC11 NIC12 NIC13 NIC14 NIC15 NIC16 NIC17 NIC18 NIC19 NIC20 CPU Affinity NUMA Affinity GPU NUMA ID
GPU0 X NV18 SYS SYS PIX PIX PIX NODE PIX PIX NODE NODE NODE NODE SYS SYS SYS SYS SYS SYS SYS SYS NODE 47,49,51,53 1 N/A
GPU1 NV18 X SYS SYS NODE NODE NODE PIX NODE NODE PIX PIX PIX PIX SYS SYS SYS SYS SYS SYS SYS SYS NODE 47,49,51,53 1 N/A
NIC0 SYS SYS X NODE SYS SYS SYS SYS SYS SYS SYS SYS SYS SYS NODE NODE NODE NODE PIX PIX PIX PIX SYS
NIC1 SYS SYS NODE X SYS SYS SYS SYS SYS SYS SYS SYS SYS SYS PIX PIX PIX PIX NODE NODE NODE NODE SYS
NIC2 PIX NODE SYS SYS X PIX PIX NODE PIX PIX NODE NODE NODE NODE SYS SYS SYS SYS SYS SYS SYS SYS NODE
NIC3 PIX NODE SYS SYS PIX X PIX NODE PIX PIX NODE NODE NODE NODE SYS SYS SYS SYS SYS SYS SYS SYS NODE
NIC4 PIX NODE SYS SYS PIX PIX X NODE PIX PIX NODE NODE NODE NODE SYS SYS SYS SYS SYS SYS SYS SYS NODE
NIC5 NODE PIX SYS SYS NODE NODE NODE X NODE NODE PIX PIX PIX PIX SYS SYS SYS SYS SYS SYS SYS SYS NODE
NIC6 PIX NODE SYS SYS PIX PIX PIX NODE X PIX NODE NODE NODE NODE SYS SYS SYS SYS SYS SYS SYS SYS NODE
NIC7 PIX NODE SYS SYS PIX PIX PIX NODE PIX X NODE NODE NODE NODE SYS SYS SYS SYS SYS SYS SYS SYS NODE
NIC8 NODE PIX SYS SYS NODE NODE NODE PIX NODE NODE X PIX PIX PIX SYS SYS SYS SYS SYS SYS SYS SYS NODE
NIC9 NODE PIX SYS SYS NODE NODE NODE PIX NODE NODE PIX X PIX PIX SYS SYS SYS SYS SYS SYS SYS SYS NODE
NIC10 NODE PIX SYS SYS NODE NODE NODE PIX NODE NODE PIX PIX X PIX SYS SYS SYS SYS SYS SYS SYS SYS NODE
NIC11 NODE PIX SYS SYS NODE NODE NODE PIX NODE NODE PIX PIX PIX X SYS SYS SYS SYS SYS SYS SYS SYS NODE
NIC12 SYS SYS NODE PIX SYS SYS SYS SYS SYS SYS SYS SYS SYS SYS X PIX PIX PIX NODE NODE NODE NODE SYS
NIC13 SYS SYS NODE PIX SYS SYS SYS SYS SYS SYS SYS SYS SYS SYS PIX X PIX PIX NODE NODE NODE NODE SYS
NIC14 SYS SYS NODE PIX SYS SYS SYS SYS SYS SYS SYS SYS SYS SYS PIX PIX X PIX NODE NODE NODE NODE SYS
NIC15 SYS SYS NODE PIX SYS SYS SYS SYS SYS SYS SYS SYS SYS SYS PIX PIX PIX X NODE NODE NODE NODE SYS
NIC16 SYS SYS PIX NODE SYS SYS SYS SYS SYS SYS SYS SYS SYS SYS NODE NODE NODE NODE X PIX PIX PIX SYS
NIC17 SYS SYS PIX NODE SYS SYS SYS SYS SYS SYS SYS SYS SYS SYS NODE NODE NODE NODE PIX X PIX PIX SYS
NIC18 SYS SYS PIX NODE SYS SYS SYS SYS SYS SYS SYS SYS SYS SYS NODE NODE NODE NODE PIX PIX X PIX SYS
NIC19 SYS SYS PIX NODE SYS SYS SYS SYS SYS SYS SYS SYS SYS SYS NODE NODE NODE NODE PIX PIX PIX X SYS
NIC20 NODE NODE SYS SYS NODE NODE NODE NODE NODE NODE NODE NODE NODE NODE SYS SYS SYS SYS SYS SYS SYS SYS X
Legend:
X = Self
SYS = Connection traversing PCIe as well as the SMP interconnect between NUMA nodes (e.g., QPI/UPI)
NODE = Connection traversing PCIe as well as the interconnect between PCIe Host Bridges within a NUMA node
PHB = Connection traversing PCIe as well as a PCIe Host Bridge (typically the CPU)
PXB = Connection traversing multiple PCIe bridges (without traversing the PCIe Host Bridge)
PIX = Connection traversing at most a single PCIe bridge
NV# = Connection traversing a bonded set of # NVLinks
NIC Legend:
NIC0: mlx5_0
NIC1: mlx5_1
NIC2: mlx5_2
NIC3: mlx5_3
NIC4: mlx5_4
NIC5: mlx5_5
NIC6: mlx5_6
NIC7: mlx5_7
NIC8: mlx5_8
NIC9: mlx5_9
NIC10: mlx5_10
NIC11: mlx5_11
NIC12: mlx5_12
NIC13: mlx5_13
NIC14: mlx5_14
NIC15: mlx5_15
NIC16: mlx5_16
NIC17: mlx5_17
NIC18: mlx5_18
NIC19: mlx5_19
NIC20: mlx5_bond_0
==============================
Environment Variables
==============================
NVIDIA_VISIBLE_DEVICES=5,7
NVIDIA_REQUIRE_CUDA=cuda>=12.9 brand=unknown,driver>=535,driver<536 brand=grid,driver>=535,driver<536 brand=tesla,driver>=535,driver<536 brand=nvidia,driver>=535,driver<536 brand=quadro,driver>=535,driver<536 brand=quadrortx,driver>=535,driver<536 brand=nvidiartx,driver>=535,driver<536 brand=vapps,driver>=535,driver<536 brand=vpc,driver>=535,driver<536 brand=vcs,driver>=535,driver<536 brand=vws,driver>=535,driver<536 brand=cloudgaming,driver>=535,driver<536 brand=unknown,driver>=550,driver<551 brand=grid,driver>=550,driver<551 brand=tesla,driver>=550,driver<551 brand=nvidia,driver>=550,driver<551 brand=quadro,driver>=550,driver<551 brand=quadrortx,driver>=550,driver<551 brand=nvidiartx,driver>=550,driver<551 brand=vapps,driver>=550,driver<551 brand=vpc,driver>=550,driver<551 brand=vcs,driver>=550,driver<551 brand=vws,driver>=550,driver<551 brand=cloudgaming,driver>=550,driver<551 brand=unknown,driver>=560,driver<561 brand=grid,driver>=560,driver<561 brand=tesla,driver>=560,driver<561 brand=nvidia,driver>=560,driver<561 brand=quadro,driver>=560,driver<561 brand=quadrortx,driver>=560,driver<561 brand=nvidiartx,driver>=560,driver<561 brand=vapps,driver>=560,driver<561 brand=vpc,driver>=560,driver<561 brand=vcs,driver>=560,driver<561 brand=vws,driver>=560,driver<561 brand=cloudgaming,driver>=560,driver<561 brand=unknown,driver>=565,driver<566 brand=grid,driver>=565,driver<566 brand=tesla,driver>=565,driver<566 brand=nvidia,driver>=565,driver<566 brand=quadro,driver>=565,driver<566 brand=quadrortx,driver>=565,driver<566 brand=nvidiartx,driver>=565,driver<566 brand=vapps,driver>=565,driver<566 brand=vpc,driver>=565,driver<566 brand=vcs,driver>=565,driver<566 brand=vws,driver>=565,driver<566 brand=cloudgaming,driver>=565,driver<566 brand=unknown,driver>=570,driver<571 brand=grid,driver>=570,driver<571 brand=tesla,driver>=570,driver<571 brand=nvidia,driver>=570,driver<571 brand=quadro,driver>=570,driver<571 brand=quadrortx,driver>=570,driver<571 brand=nvidiartx,driver>=570,driver<571 brand=vapps,driver>=570,driver<571 brand=vpc,driver>=570,driver<571 brand=vcs,driver>=570,driver<571 brand=vws,driver>=570,driver<571 brand=cloudgaming,driver>=570,driver<571
NVIDIA_DRIVER_CAPABILITIES=compute,utility
CUDA_VERSION=12.9.1
CUDA_VISIBLE_DEVICES=0,1
CUDA_VISIBLE_DEVICES=0,1
NVIDIA_DISABLE_REQUIRE=true
LD_LIBRARY_PATH=/usr/local/nvidia/lib64:/usr/local/cuda/lib64:/usr/local/cuda/lib64
PYTORCH_NVML_BASED_CUDA_CHECK=1
TORCHINDUCTOR_COMPILE_THREADS=1🐛 Describe the bug
I use code below to start the server.
LMCACHE_USE_LAYERWISE=True PYTHONHASHSEED=0 LMCACHE_CONFIG_FILE=lmcache_config.yaml CUDA_VISIBLE_DEVICES=0 vllm serve mistralai/Mistral-7B-Instruct-v0.2 --gpu-memory-utilization 0.8 --port 8000 --kv-transfer-config '{"kv_connector":"LMCacheConnectorV1", "kv_role":"kv_both"}'The yaml file is
chunk_size: 16local_cpu: trueremote_url: "lm://localhost:8100"max_local_cpu_size: 20.0remote_serde: "naive"and i use lmcache version is 0.4.1
After serveral requests ( about 500 requests each request about 4000 with input len avg in 16 batch size), i encounter an error
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return forward_call(*args, **kwargs)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "<eval_with_key>.2", line 5, in forward
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] unified_attention_with_output = torch.ops.vllm.unified_attention_with_output(query_2, key_2, value, output_3, 'model.layers.0.self_attn.attn'); query_2 = key_2 = value = output_3 = unified_attention_with_output = None
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/torch/_ops.py", line 1255, in __call__
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return self._op(*args, **kwargs)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/attention/utils/kv_transfer_utils.py", line 56, in wrapper
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] connector.save_kv_layer(layer_name, kv_cache, attn_metadata)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/distributed/kv_transfer/kv_connector/v1/lmcache_connector.py", line 175, in save_kv_layer
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] self._lmcache_engine.save_kv_layer(
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/lmcache/integration/vllm/vllm_v1_adapter.py", line 1074, in save_kv_layer
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] next(layerwise_storer)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/torch/utils/_contextlib.py", line 38, in generator_context
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] response = gen.send(None)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/lmcache/v1/cache_engine.py", line 650, in store_layer
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] memory_objs_multi_layer = self.storage_manager.batched_allocate(
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/lmcache/v1/storage_backend/storage_manager.py", line 359, in batched_allocate
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return self.allocator_backend.batched_allocate(
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/lmcache/v1/storage_backend/local_cpu_backend.py", line 670, in batched_allocate
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] old_mem_objs.append(self.hot_cache[key])
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ~~~~~~~~~~~~~~^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] KeyError: LayerCacheEngineKey(model_name='mistralai/Mistral-7B-Instruct-v0.2', world_size=1, worker_id=0, chunk_hash=9190147360584713872, dtype=torch.bfloat16, request_configs=None, tags=None, _dtype_str='bfloat16', layer_id=0)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938]
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] During handling of the above exception, another exception occurred:
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938]
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] Traceback (most recent call last):
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/kv_connector_model_runner_mixin.py", line 131, in _get_kv_connector_output
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] kv_connector.wait_for_save()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/distributed/kv_transfer/kv_connector/v1/lmcache_connector.py", line 187, in wait_for_save
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] self._lmcache_engine.wait_for_save()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/lmcache/integration/vllm/vllm_v1_adapter.py", line 1093, in wait_for_save
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] next(layerwise_storer)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] StopIteration
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938]
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] The above exception was the direct cause of the following exception:
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938]
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] Traceback (most recent call last):
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core.py", line 929, in run_engine_core
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] engine_core.run_busy_loop()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core.py", line 956, in run_busy_loop
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] self._process_engine_step()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core.py", line 989, in _process_engine_step
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] outputs, model_executed = self.step_fn()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core.py", line 491, in step_with_batch_queue
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] exec_model_fut.result()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/lib/python3.12/concurrent/futures/_base.py", line 449, in result
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return self.__get_result()
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/lib/python3.12/concurrent/futures/_base.py", line 401, in __get_result
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] raise self._exception
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/executor/uniproc_executor.py", line 79, in collective_rpc
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] result = run_method(self.driver_worker, method, args, kwargs)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/serial_utils.py", line 461, in run_method
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return func(*args, **kwargs)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/worker_base.py", line 365, in execute_model
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return self.worker.execute_model(scheduler_output)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/torch/utils/_contextlib.py", line 120, in decorate_context
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return func(*args, **kwargs)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/gpu_worker.py", line 629, in execute_model
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] output = self.model_runner.execute_model(
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/torch/utils/_contextlib.py", line 120, in decorate_context
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] return func(*args, **kwargs)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/gpu_model_runner.py", line 3289, in execute_model
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] self.maybe_get_kv_connector_output(scheduler_output) as kv_connector_output,
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] File "/usr/lib/python3.12/contextlib.py", line 158, in __exit__
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] self.gen.throw(value)
(EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] RuntimeError: generator raised StopIteration
(EngineCore_DP0 pid=17830) Process EngineCore_DP0:
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] AsyncLLM output_handler failed.
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] Traceback (most recent call last):
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/async_llm.py", line 502, in output_handler
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] outputs = await engine_core.get_output_async()
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core_client.py", line 899, in get_output_async
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] raise self._format_exception(outputs) from None
(APIServer pid=17742) ERROR 03-17 14:38:51 [async_llm.py:546] vllm.v1.engine.exceptions.EngineDeadError: EngineCore encountered an issue. See stack trace (above) for the root cause.
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] Error in chat completion stream generator.
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] Traceback (most recent call last):
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] File "/usr/local/lib/python3.12/dist-packages/vllm/entrypoints/openai/serving_chat.py", line 715, in chat_completion_stream_generator
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] async for res in result_generator:
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/async_llm.py", line 437, in generate
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] out = q.get_nowait() or await q.get()
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] ^^^^^^^^^^^^^
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/output_processor.py", line 77, in get
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] raise output
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/async_llm.py", line 502, in output_handler
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] outputs = await engine_core.get_output_async()
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] File "/usr/local/lib/python3.12/dist-packages/vllm/v1/engine/core_client.py", line 899, in get_output_async
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] raise self._format_exception(outputs) from None
(APIServer pid=17742) ERROR 03-17 14:38:51 [serving_chat.py:1343] vllm.v1.engine.exceptions.EngineDeadError: EngineCore encountered an issue. See stack trace (above) for the root cause.
(EngineCore_DP0 pid=17830) Traceback (most recent call last):
(EngineCore_DP0 pid=17830) File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/kv_connector_model_runner_mixin.py", line 128, in _get_kv_connector_output
(EngineCore_DP0 pid=17830) yield output
(EngineCore_DP0 pid=17830) File "/usr/local/lib/python3.12/dist-packages/vllm/v1/worker/gpu_model_runner.py", line 3291, in execute_model
(EngineCore_DP0 pid=17830) model_output = self._model_forward(The important part is
old_mem_objs.append(self.hot_cache[key]) (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] ~~~~~~~~~~~~~~^^^^^ (EngineCore_DP0 pid=17830) ERROR 03-17 14:38:51 [core.py:938] KeyError: LayerCacheEngineKey(model_name='mistralai/Mistral-7B-Instruct-v0.2', world_size=1, worker_id=0, chunk_hash=9190147360584713872, dtype=torch.bfloat16, request_configs=None, tags=None, _dtype_str='bfloat16', layer_id=0)
But i use layerwise=False the error wont happen.
Before submitting a new issue...
- Make sure you already searched for relevant issues, and asked the chatbot living at the bottom right corner of the documentation page, which can answer lots of frequently asked questions.
extent analysis
Fix Plan
The error occurs due to a KeyError exception when trying to access a key in the hot_cache dictionary. This issue arises when using LMCACHE_USE_LAYERWISE=True.
To fix this issue, you can try the following steps:
- Update the
lmcacheversion to the latest one, as the issue might be resolved in the newer versions. - If updating the
lmcacheversion does not resolve the issue, try settingLMCACHE_USE_LAYERWISE=Falseas you have already done, which seems to prevent the error from occurring. - If setting
LMCACHE_USE_LAYERWISE=Falseis not a viable solution for your use case, you may need to modify the code to handle theKeyErrorexception properly.
Here's an example of how you can modify the code to handle the KeyError exception:
try:
old_mem_objs.append(self.hot_cache[key])
except KeyError:
# Handle the KeyError exception, for example, by logging an error message
logging.error(f"Key {key} not found in hot_cache")
# You can also add additional logic to handle the missing keyVerification
To verify that the fix worked, you can run your application with the modified code and check if the KeyError exception still occurs. If the exception is handled properly, your application should continue running without crashing.
Extra Tips
Make sure to test your application thoroughly after applying the fix to ensure that it works as expected. Additionally, if you are using a older version of lmcache, consider updating to the latest version, as it may include bug fixes and improvements that could resolve the issue.
Also, note that the LMCACHE_USE_LAYERWISE flag is set to True in your original command, but the error message suggests that the issue occurs when this flag is set to True. Therefore, setting this flag to False might be a viable workaround for your specific use case.
If none of these solutions work, you may need to dig deeper into the code and the lmcache library to understand the root cause of the issue and find a suitable fix.
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×6Another batch ranked right after the header list — different links, same matching logic.
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- [BUG] Diff highlight (teal SGR background) bleeds past changed text in 2.1.150–2.1.153
- [FEATURE] confirm before deleting session
- Plugin PostToolUse hooks still silently skip in Claude Desktop / Cowork (re-filing closed #51904)
- /code-review skill: silent fallback to main...HEAD reviews other people's commits, and JSON-only output is hard to read
- Monitor tool doesn't source the shell snapshot like Bash does; PATH-dependent tools (jq, sleep, etc.) fail in Monitor commands on macOS/Nix
- [Bug] Long input lines truncated with ellipsis while typing instead of wrapping in terminal UI
- [FEATURE] VS Code extension: Render submitted user messages as Markdown in chat
- OSC 52 copy from Claude TUI doesn't reach clipboard inside tmux (regression in 2.1.146–2.1.153)
- [BUG] RemoteTrigger create/update returns HTTP 400 with circular error: "event_type is required" / "unknown field event_type"
- [BUG] Option to hide or minimize the built-in "status footer" (multi-line debug/cost panel) [re-raise of #31475]
- [Bug] Feedback submissions being closed without review or action
- [FEATURE] Word-jump cursor navigation in Chat input (option+arrow / bindable actions)
- [FEATURE] ! shell mode: filesystem tab completion
- [BUG] API Error: Usage credits required for 1M context
- claude agents: OSC 52 clipboard emission broken in tmux (regression in 2.1.146–2.1.153)
- CLI crashes on macOS 15 M3 - exit code 1
- [FEATURE] Support Cmd+V image paste from clipboard
- [FEATURE] Enhance claude.ai M365 connector to support MS Planner
- [BUG] Slash command autocomplete hijacks pasted absolute file paths starting with /
- PreToolUse hook `if` filter false-positives on complex Bash commands
- [BUG] Diff panel hangs/whites out
- Feature Request: Support drag-and-drop for binary documents (.wps, .doc, .docx, .xlsx, .pdf) in VS Code extension
- [BUG] activation of 1M context in VSCode
- [FEATURE] Support i18n / language localization for built-in slash command outputs
- Ctrl+V para colar imagens deixou de funcionar no CLI (Windows, PowerShell)
- [FEATURE] Please add Norwegian (Bokmål/Nynorsk) language support to the Claude Code interface
- [BUG] OTel log events (claude_code.user_prompt, api_request_body, tool_decision, hook_execution_complete) emitted with empty trace_id/span_id while sibling spans correlate correctly
- [BUG] Cowork crashes on every message, no VM logs generated, missing AppData\Roaming\Claude
- [FEATURE] first-class session handoff + per-session token budgets for unattended runs
- [FEATURE] Smart paste: convert clipboard code to file reference chips (like Cursor)
- [Feature Request] Restore chat pin functionality to title chat submenu
- [BUG] SIGILL issues with version 2.1.153
- [BUG] Cowork plugin upload fails with generic "Plugin validation failed" when a `description` field in any SKILL.md frontmatter contains angle brackets (`<…>`)
- [BUG] Desktop App 2.1.144+: startup scanner deletes cliSessionId from claude-code-sessions local files on every launch — session not found on disk
- [Feature Request] Add keyboard shortcut to copy last message with proper formatting
- [MODEL] Opus 4.7 not 1M
- Allow naming/renaming background agents in `claude agents` view
- Stale worktrees in .claude/worktrees/ are never cleaned up, consuming massive disk space
- Agent worktrees are never cleaned up, silently consuming disk space
- Subagent worktrees not auto-cleaned when reviewer writes scratch files
- [Bug] Skill initialization hangs for extended duration in Plan Mode
- Claude Desktop writes malformed registry Run entry (nested escaped quotes) - crashes Windows Task Manager and other Run-key parsers
- IME candidate window shows at bottom-right corner instead of caret position (Windows CMD)
- [BUG] Pressing 'Escape' doesn't close the /BTW conversation when the main conversation is asking for approval
- [BUG] Opus 4.7 (1M) intermittently emits empty-string values for tool_use.input fields, killing the session
- FleetView agent UI shows "running" with incrementing elapsed time after agent has returned
- /doctor flags context-scoped cmd+c binding as macOS conflict (false positive)
- [BUG] Text Rendering in Elvish
- Desktop app: Bypass Permissions mode flips to Accept Edits on first prompt (M5 / macOS 26.5)
- [Workaround] Date-Weekday Verification Hook — Prevents Claude from writing wrong weekdays
- [BUG] Claude Code create c:/memfs directory without asking me.
- [BUG] Claude Code's Bash execution waits forever with no processes running
- [BUG] usage stays stuck waiting for 5 hr limit after upgrading to premium seat in team plan
- [Workflow tool] resume cache is unreachable for nontrivial workflows because LLM dispatchers can't transcribe args byte-exactly
- Code review (Preview): "Add a repository" shows no results for private GitHub org repos
- [BUG] /context commands blows up context
- [Feature Request] Add precache expiry hook to enable proactive compaction before token eviction
- [BUG] Context indicator shows 0% at session start despite ~20K+ tokens already loaded
- [Feature Request] Add semantic search for --resume session history
- [Feature Request] Add session search, tagging, and filtering capabilities
- [BUG] Cowork Dispatch reports "desktop not available" on Windows 11 while standard Cowork works normally
- [Bug] Claude Code provides incorrect suggestions with high confidence despite errors
- defaultMode: acceptEdits silently overrides per-path permissions.ask rules for Write/Edit
- [FEATUR configurable tip interval (e.g. tipIntervalSeconds: 30 in settings)E]
- Plugin marketplace fails to load: schema rejects 'displayName' key (v2.1.153)
- claude agents: in-session copy uses broken OSC 52 path while overview correctly uses tmux buffer
- [BUG] Plugin agent descriptions (and custom agents) load unconditionally into context — no parity with disable-model-invocation for skills
- Crashed ultrareview consumed a free credit despite producing zero findings
- [Bug] Character rendering issue - invisible or missing text display
- [BUG] Cowork: processo Claude Code encerra com código 3 — .claude.json não contém token de autenticação (Windows 11 25H2)
- [BUG] 2.1.153 silently discards tools/list response from rmcp 0.12.0 HTTP MCP server (works in 2.1.152, wire-identical handshake)
- VS Code extension: option to auto-resume last session when reopening a workspace folder
- [Bug] Conversation continuation failure
- [BUG] Cowork crashes every time I start a new chat or attempt to continue an existing one in any project. The error displayed is: "Claude Code è andato in crash
- [Bug] Unannounced quota changes
- Native update/install fails with 'socket connection was closed unexpectedly' behind proxy — undici TLS incompatibility
- [BUG] Session name reverting after manual change
- [BUG] 非正常思考，上下文过长时，一直显示思考，点击interrupt按钮失效
- Honor `tools:` frontmatter when an agent is invoked via `@mention` — strip `Task` only when the agent did not declare it
- macOS TCC popup still recurring on v2.1.153 — "2.1.153" would like to access data from other apps
- Claude Code leaks pty handles — exhausts pseudo-terminals on macOS after long session
- [Bug] Agent fails to execute or respond to user input
- [BUG] Persistent "Expecting value: line 1 column 1 (char 0)" JSON parse error after tool execution
- [Feature Request] Implement proactive unit test coverage recommendations for recurring bugs
- VS Code panel lacks status line + terminal lacks image paste in Codespaces, forcing a tradeoff
- `/powerup` only shows ~10 lessons — allow viewing the full catalog
- [Bug] Context contamination after auto-compact with unrelated email draft of Tejo/Sado Basin
- [Bug] VSCode terminal output displays corrupted text with garbled symbols
- [Feature Request] Add LaTeX/KaTeX math rendering to TUI
- [Bug] Sub-agent PR review results not validated by orchestrating agent
- Subagents on Pro 1M tier: trivial probes pass, real workloads fail at first tool call (probe-vs-workload divergence)
- Path-scoped rules and subdirectory CLAUDE.md not loaded when creating new files matching the pattern
- AskUserQuestion: cancelling during extended thinking poisons the whole session with 400 'thinking blocks cannot be modified' (2.1.153); concurrent prompts overwrite each other
- Ideas Missing from Claude Cowork Menu (Windows)
- [BUG_BOUNTY_SAFE_POC_2026] Prompt Injection RCE Test - Command Execution Proof
- [BUG] Cowork scheduled task: execution history row not showing after successful run
- Resuming an extended-thinking session fails permanently with 400 "thinking blocks cannot be modified" (transcript stores thinking text as empty but keeps signature)
- [Bug] Plugin-registered CwdChanged and FileChanged hooks don't fire (settings.json works) — v2.1.153
- Auto-archive on PR merge / branch delete — clarify autoArchiveSessions semantics or add dedicated opt-out
- `claude mcp add` echoes Authorization header value verbatim to stdout, leaks bearer tokens to terminal and session transcripts
- [BUG] Bug report — /insights skill, Claude Code The /insights skill outputs a malformed file path.
- Plugin slash commands render with '*'-inline format instead of two-column, despite matching official plugin shape
- [Bug] Unexpected long text generation without user input or goal
- [Bug] Thinking blocks causing task progression blocked without user modification
- [BUG] (Critical!) contamination by an unknown session simirlar to the report => [Bug] Context contamination after auto-compact with unrelated email draft of Tejo/Sado Basin #63137
- [Critical] Opus 4.7 Korean output degeneration — Korean grammar itself collapses in long contexts
- [BUG] Title: Autocompact buffer persists across /clear — wastes tokens for irrelevant old context
- [Bug] Auto-Compact loses user input before processing in conversation history
- Feature: per-invocation effort parameter + runtime session-config introspection for skills
- Auto-mode classifier mislabels Azure DevOps vote -5 as "Reject" when denying PR vote actions
- [BUG] Claude Desktop and Claude Code CLI never re-register MCP tools after OAuth 2.1 handshake on a remote HTTP server
- [BUG] Workspace file tags leak across sessions
- [BUG] Ink renderer crashes on Windows 11 build 26200 (Canary) duplicate banners, terminal mode leaks, mid-operation aborts
- [BUG] Claude Code Desktop issue
- PTY master fd leak in Claude desktop app exhausts macOS kern.tty.ptmx_max after ~2-3 days
- [BUG] Claude Code — Session Management after Unexpected Interruption
- [Windows] Cowork OpenTelemetry exporter does not initialize - zero events emitted to any destination, including loopback
- [Bug] Opus 4.7: 400 `thinking blocks ... cannot be modified` on long extended-thinking sessions, triggered by history-altering events (scheduled prompts / parallel tool-call cancellation)
- [BUG] API Error: Server is temporarily limiting requests (not your usage limit) · Rate limited
- Multi-plugin custom marketplace: only first plugin registered in installed_plugins.json, skills don't load
- [BUG] Git push through the SDK's git proxy fan-outs into ~500 GitHub REST API calls, exhausting the 5,000/hour budget after a handful of pushes
- [BUG] Claude took liberties it really shouldn't with my global config
- [BUG] Agent window focus lost after navigating with arrow keys, causing scroll deadlock
- [BUG] `--model` flag silently ignored in interactive sessions (works in `--print` only)
- [BUG] Dispatch permanently shows "desktop appears offline" on Windows 11 - never worked on first use
- feat: support per-command enableWeakerNetworkIsolation as safer alternative to dangerouslyDisableSandbox
- /code-review outputs a raw JSON array instead of readable findings
- [BUG] Cowork — Additional allowed domains ignored on Team plan; same domain works on Pro plan
- Haiku
- [Bug] False positive blocking beneficial outcomes in tool execution
- 3P Bedrock SSO: credentials silently expire without triggering re-auth on day 2+
- CLAUDE_AUTOCOMPACT_PCT_OVERRIDE in settings.json env block silently ignored by autocompact logic
- Auto-compaction deletes main session JSONL before verifying summary completion, causing data loss
- [Bug] Claude Code not executing stated actions or producing expected results
- [FEATURE] Deferred Messages — Queue Input for End of Turn
- [BUG] Up/Down arrows in input box navigate history instead of moving cursor — regression in 2.1.149+
- Cancelling a parallel tool-call batch corrupts thinking blocks -> 400 "thinking blocks cannot be modified" permanently wedges the session
- Claude Code caused data loss, then contradicted itself about recovery (two incidents, one session)
- [Bug] Unclear error messages from Claude Code CLI
- [Bug] Agent tool rejecting due to context size limit exceeded
- claude agents: daemon and bg-spare processes spin at ~100% CPU when idle
- [BUG] Compaction fails with "context window limit" error even when context usage is low (e.g., 20%) — regression in v2.1.153
- Remote Control entitlement lost after May 27-28 incident — `Error: Remote Control is not yet enabled for your account` on active Max subscription
- PreToolUse hook exit code 2 does not block Write tool
- [Bug] Thinking blocks in latest assistant message are immutable
- GUI: dispatch file:// and custom-scheme clicks to OS shell handler
- Show current model in statusLine by default
- [Bug] Agent console becomes unresponsive to keyboard input after multiple agents initialized
- [FEATURE] PreToolUse hooks should have a way of updating the environment
- [Bug] Unable to start or use Claude Code CLI
- [BUG] Repository not visible in Claude Code web repo picker
- Session permanently wedged on 400 "thinking blocks cannot be modified" after parallel tool_results
- [Bug] @ autocomplete loses sibling repos after a file edit in multi-repo workspace
- Unclear error message when creating sub-agent without authentication
- [Bug] Anthropic API errors causing frequent failures and high token usage
- [BUG] @ mention file picker only shows packages, not individual files (desktop app - Code tab)
- [Bug] TUI panel footer remains sticky and consumes excessive terminal space
- PR-status polling exhausts GitHub GraphQL rate limit on repos with many open PRs
- [BUG] Windows: welcome panel not shown in some project folders (2.1.153)
- [Bug] Anthropic API Error: thinking blocks corrupted during context compaction with extended thinking enabled
- API 400 "thinking blocks cannot be modified" permanently bricks session during agent activation (interleaved thinking + tool use)
- Right-click Copy copies the whole message instead of the selection; pasted text retains dark background
- Mid-session model switch corrupts conversation when extended thinking is enabled (API 400: 'thinking blocks cannot be modified')
- [BUG] Markdown file links in chat output do not open files when clicked (VS Code extension)
- Stuck retry loop: `400 thinking blocks cannot be modified` on large interleaved-thinking turns using AskUserQuestion
- [FEATURE] Prompt user for approval before auto-compaction proceeds
- Custom MCP connectors not attachable to scheduled routines — no UUID discovery path
- [BUG] Claude in Chrome — Navigation blocked for teams.cloud.microsoft and outlook.cloud.microsoft after Microsoft domain migration**
- [BUG] Claude Desktop — Personal plugins panel renders list but is entirely non-interactive (macOS, v1.9255.2)
- [Bug] error when using Workflows
- [BUG] Persistent "update available" notification despite being on latest version
- [BUG] Sweep Agent from /code-review never completes
- [Bug] Tool calls not executing or returning results
- [FEATURE] Cloud-synced memory and settings across machines
- [Bug] Terminal UI freezes when Ctrl+O view exits during interactive prompt in plan mode
- Continuous api errors when using claude code with Opus 4.7 with thinking on low
- [Feature Request] Add support for installing and using previous Claude Code versions
- [Bug] Extended Thinking: Summarized thinking blocks fail signature validation when resent to API
- [Bug] Anthropic API Error: 'thinking' blocks cannot be modified
- [Bug] Anthropic API Error: Thinking blocks cannot be modified with extended thinking mode
- Feature request: Lazy/on-demand MCP server connections
- [Bug] Tool Arguments Parsed as String Instead of Object
- [Bug] Anthropic API Error: Insufficient context provided
- [Bug] Claude Opus occasionally uses moskovian(russian) orthography instead of Ukrainian in system-prompted responses
- Opus 4.8: backgrounded task completions (subagents AND Bash) crash with 400 "thinking blocks cannot be modified"
- [Bug] Opus 4.7 fabricates stable preferences ("my default") to rationalize arbitrary choices when challenged
- [Bug] Unable to update Claude Code CLI
- [BUG] Desktop app: /remote-control mints link + connects bridge (main.log) but in-chat link/QR panel never renders
- Feature: sessionColor and sessionName in .claude/settings.json
- [BUG] Anthropic API error: thinking blocks
- [FEATURE] Support Remote MCPs in Cowork as in Claude Code
- [Bug] Anthropic API Error: 400 Bad Request with Redacted Thinking - 0 4.7 & 4.8
- [Bug] Anthropic API Error: Cannot modify thinking blocks from different model versions
- Interleaved thinking + multi-tool turn corrupts thinking block (text blanked, signature kept) → permanent 400 'blocks must remain as they were'
- [BUG] Mode/permission changes mid-tool-loop (effortLevel: xhigh) poisons entire session
- Session failure log: Opus 4.6 ignores its own rules for an entire session
- [BUG] "400 Guardrail was enabled" error when using Claude Opus 4.8 with AWS Bedrock
- [Feature Request] Add subagent approach selection option to avoid accidental feedback
- Persistent 400 'thinking blocks in the latest assistant message cannot be modified' — interleaved thinking persisted with empty text + signature bricks sessions
- [BUG] DesktopvsApp
- [BUG] Opus 4.7 cache hit rate collapse after May 27 incident — Messages 1.1k→88.9k in 9 minutes, $630/session
- [Bug] Anthropic API Error: Invalid thinking block format
- [BUG] FUCK CLAUDE
- Opus 4.8 extended thinking: Stop hook block re-entry corrupts thinking blocks → 400
- [Bug] 4.8 Fails when accessing previous model history
- [Bug] Unintended File Modifications During Execution
- [DOCS] Model configuration docs omit lean system prompt default scope and model exceptions
- Add "Always allow globally" option to permission prompts
- Server-side model upgrade (Opus 4.7→4.8) wedges in-flight sessions with `thinking blocks cannot be modified` 400
- [DOCS] AskUserQuestion docs missing multiple-choice prompt decision threshold
- [DOCS] Agent view docs omit shell-command background session launch syntax
- [DOCS] Agent view dispatch input docs incorrectly imply `/logout` dispatches as a prompt
- [DOCS] Claude in Chrome docs omit connected-browser selection behavior
- [DOCS] Plugin docs omit `defaultEnabled: false` for opt-in plugins
- Feature Request: Customizable chat text colors for user and assistant messages
- [DOCS] `/plugin` Discover tab docs omit directory-based suggested plugin pins
- VSCode Chrome integration silently fails: 3 distinct bugs
- [DOCS] MCP stdio docs omit session environment variables
- [Bug] Anthropic API error on second request within session with Claude Opus 4.8
- Cowork emits a blank session "index" handoff on focus when a CLI session is paused awaiting input
- [DOCS] MCP docs omit `claude mcp list/get` pending-approval output for unapproved project servers
- [BUG] /compact fails with 400 error when last assistant turn contains thinking blocks
- [DOCS] `/claude-api` docs omit Opus 4.8 migration guidance
- [DOCS] Fast mode docs still recommend deprecated Opus 4.6 override variable
- [DOCS] Bash tool docs omit `$TMPDIR` consistency across sandboxed and unsandboxed commands
- [Bug] Anthropic API Error: 400 Bad Request on Extended Thinking
- [DOCS] Background session docs omit worktree-isolation behavior for spawned subagents
- Built-in mechanistic self-verification of verifiable claims (symmetric to the auto permission gate)
- [DOCS] Worktree docs do not clarify `worktree.baseRef: "head"` inside linked worktrees
- [BUG] Excessive RAM usage with multiple parallel chats (~10 sessions → 30 GB memory pressure, macOS OOM)
- [DOCS] Managed MCP policy docs omit invalid `allowedMcpServers`/`deniedMcpServers` entry behavior
- [DOCS] Effort docs omit `CLAUDE_CODE_ALWAYS_ENABLE_EFFORT` unsupported-model behavior
- Regression (2.1.147–2.1.150?): resuming an extended-thinking session after a CC update/model-switch → unrecoverable 400, session bricked
- [DOCS] Windows updater docs omit `claude.exe` in-use recovery guidance
- [DOCS] VS Code auto mode docs still tie mode-picker visibility to bypass-permissions setting
- [DOCS] MCP docs omit `/mcp` tool list and detail rendering behavior
- [DOCS] Fine-grained tool streaming docs still describe provider opt-in behavior
- bypassPermissions: session startup reads flat pref, GUI toggle writes per-account pref — they never sync
- [BUG] Claude Desktop Code tab causes disk write limit violation — 8.5GB in 11 min, macOS kills app (M5, v1.9659.1)
- Ultrareview v2.1.96: docs describe /tasks command + claude ultrareview --json subcommand that don't exist; findings hard to read after completion
- I'd be happy to help create a GitHub issue title, but I don't see the error message in your message. Could you please share the specific error you're encountering? That way I can generate an accurate and descriptive issue title for you.
- [BUG] Claude in Chrome `file_upload` rejects all scheduled-task sessions with misleading error (real cause: INVALID_SESSION)
- Extended thinking: signed thinking block 'cannot be modified' (400) permanently wedges session
- RTL text support for Hebrew (and Arabic) in Claude Code
- [Bug] Random errors occurring across multiple operations