# Cursor Chat: ai-agent-book

## Metadata
- **Project**: ai-agent-book
- **Path**: `/Users/boj`
- **Date**: 2025-10-05 16:36:30
- **Session ID**: `08202a28-506d-4e8a-8c7b-0e80ea43d747`

## Conversation

### 👤 You

verl-intuitor/verl/single_controller/base/decorator.py", line 549, in inner
(TaskRunner pid=23446)     return func(*args, **kwargs)
(TaskRunner pid=23446)   File "/root/Intuitor/verl-intuitor/verl/workers/fsdp_workers.py", line 633, in init_model
(TaskRunner pid=23446)     self.rollout, self.rollout_sharding_manager = self._build_rollout(
(TaskRunner pid=23446)                                                   ~~~~~~~~~~~~~~~~~~~^
(TaskRunner pid=23446)         trust_remote_code=self.config.model.get("trust_remote_code", False)
(TaskRunner pid=23446)         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(TaskRunner pid=23446)     )
(TaskRunner pid=23446)     ^
(TaskRunner pid=23446)   File "/root/Intuitor/verl-intuitor/verl/workers/fsdp_workers.py", line 488, in _build_rollout
(TaskRunner pid=23446)     from verl.workers.rollout.vllm_rollout import vLLMRollout
(TaskRunner pid=23446)   File "/root/Intuitor/verl-intuitor/verl/workers/rollout/vllm_rollout/__init__.py", line 17, in <module>
(TaskRunner pid=23446)     from .vllm_rollout_spmd import vLLMAsyncRollout, vLLMRollout  # noqa: F401
(TaskRunner pid=23446)     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(TaskRunner pid=23446)   File "/root/Intuitor/verl-intuitor/verl/workers/rollout/vllm_rollout/vllm_rollout_spmd.py", line 50, in <module>
(TaskRunner pid=23446)     from vllm.model_executor.sampling_metadata import SamplingMetadata
(TaskRunner pid=23446) ModuleNotFoundError: No module named 'vllm.model_executor.sampling_metadata'
(TaskRunner pid=23446) Unhandled error (suppress with 'RAY_IGNORE_UNHANDLED_ERRORS=1'): ray::WorkerDict.actor_rollout_init_model() (pid=26232, ip=172.17.0.2, actor_id=4b2a2373cbbff844abe5060301000000, repr=<verl.single_controller.ray.base.WorkerDict object at 0x7fc4d70e30e0>)
(TaskRunner pid=23446)   File "/root/Intuitor/verl-intuitor/verl/single_controller/ray/base.py", line 708, in func
(TaskRunner pid=23446)     return getattr(self.worker_dict[key], name)(*args, **kwargs)
(TaskRunner pid=23446)            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
(TaskRunner pid=23446)   File "/root/Intuitor/verl-intuitor/verl/single_controller/base/decorator.py", line 549, in inner
(TaskRunner pid=23446)     return func(*args, **kwargs)
(TaskRunner pid=23446)   File "/root/Intuitor/verl-intuitor/verl/workers/fsdp_workers.py", line 633, in init_model
(TaskRunner pid=23446)     self.rollout, self.rollout_sharding_manager = self._build_rollout(
(TaskRunner pid=23446)                                                   ~~~~~~~~~~~~~~~~~~~^
(TaskRunner pid=23446)         trust_remote_code=self.config.model.get("trust_remote_code", False)
(TaskRunner pid=23446)         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(TaskRunner pid=23446)     )
(TaskRunner pid=23446)     ^
(TaskRunner pid=23446)   File "/root/Intuitor/verl-intuitor/verl/workers/fsdp_workers.py", line 488, in _build_rollout
(TaskRunner pid=23446)     from verl.workers.rollout.vllm_rollout import vLLMRollout
(TaskRunner pid=23446)   File "/root/Intuitor/verl-intuitor/verl/workers/rollout/vllm_rollout/__init__.py", line 17, in <module>
(TaskRunner pid=23446)     from .vllm_rollout_spmd import vLLMAsyncRollout, vLLMRollout  # noqa: F401
(TaskRunner pid=23446)     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
(TaskRunner pid=23446)   File "/root/Intuitor/verl-intuitor/verl/workers/rollout/vllm_rollout/vllm_rollout_spmd.py", line 50, in <module>
(TaskRunner pid=23446)     from vllm.model_executor.sampling_metadata import SamplingMetadata
(TaskRunner pid=23446) ModuleNotFoundError: No module named 'vllm.model_executor.sampling_metadata'
(WorkerDict pid=26234) Monkey patch _flash_attention_forward in transformers.integrations.flash_attention [repeated 6x across cluster]

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### 🤖 Cursor Assistant

I can see you're encountering a `ModuleNotFoundError` with vLLM's `sampling_metadata` module. This is a compatibility issue between the verl code and the installed version of vLLM - the module path has changed in newer versions of vLLM.

Let me examine the relevant files to help fix this:

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*Exported from [Cursor View](https://github.com/saharmor/cursor-view)*