66 lines
2.0 KiB
Python
66 lines
2.0 KiB
Python
# SPDX-License-Identifier: Apache-2.0
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# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
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from typing import Optional
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import torch
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import torch.nn as nn
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from vllm.config import VllmConfig
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from vllm.logger import init_logger
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from vllm.v1.kv_cache_interface import KVCacheSpec
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from vllm.worker.worker_base import WorkerBase as WorkerBaseV0
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logger = init_logger(__name__)
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class WorkerBase(WorkerBaseV0):
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"""
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Abstract class for v1 worker, mainly define some methods for v1.
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For methods shared by v0 and v1, define them in v0 WorkerBase
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"""
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def __init__(
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self,
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vllm_config: VllmConfig,
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local_rank: int,
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rank: int,
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distributed_init_method: str,
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is_driver_worker: bool = False,
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):
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"""
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Initialize common worker components.
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Args:
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vllm_config: Complete vLLM configuration
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local_rank: Local device index
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rank: Global rank in distributed setup
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distributed_init_method: Distributed initialization method
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is_driver_worker: Whether this worker handles driver
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responsibilities
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"""
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# Configuration storage
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super().__init__(vllm_config=vllm_config)
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self.parallel_config.rank = rank
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self.local_rank = local_rank
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self.rank = rank
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self.distributed_init_method = distributed_init_method
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self.is_driver_worker = is_driver_worker
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# Device and model state
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self.device: Optional[torch.device] = None
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self.model_runner: Optional[nn.Module] = None
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def get_kv_cache_spec(self) -> dict[str, KVCacheSpec]:
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"""Get specifications for KV cache implementation."""
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raise NotImplementedError
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def compile_or_warm_up_model(self) -> None:
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"""Prepare model for execution through compilation/warmup."""
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raise NotImplementedError
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def check_health(self) -> None:
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"""Basic health check (override for device-specific checks)."""
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return
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