76 lines
2.6 KiB
Python
76 lines
2.6 KiB
Python
from typing import TYPE_CHECKING
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import torch
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from vllm.logger import init_logger
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from .interface import DeviceCapability, Platform, PlatformEnum, _Backend
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if TYPE_CHECKING:
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from vllm.config import VllmConfig
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else:
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VllmConfig = None
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logger = init_logger(__name__)
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class XPUPlatform(Platform):
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_enum = PlatformEnum.XPU
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device_type: str = "xpu"
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dispatch_key: str = "XPU"
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@classmethod
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def get_default_attn_backend(cls, selected_backend: _Backend) -> _Backend:
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if selected_backend != _Backend.IPEX:
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logger.info("Cannot use %s backend on XPU.", selected_backend)
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return _Backend.IPEX
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@staticmethod
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def get_device_capability(device_id: int = 0) -> DeviceCapability:
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major, minor, *_ = torch.xpu.get_device_capability(
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device_id)['version'].split('.')
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return DeviceCapability(major=int(major), minor=int(minor))
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@staticmethod
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def get_device_name(device_id: int = 0) -> str:
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return torch.xpu.get_device_name(device_id)
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@classmethod
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def get_device_total_memory(cls, device_id: int = 0) -> int:
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device_props = torch.xpu.get_device_properties(device_id)
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return device_props.total_memory
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@staticmethod
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def inference_mode():
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return torch.no_grad()
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@classmethod
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def check_and_update_config(cls, vllm_config: VllmConfig) -> None:
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# check and update model config
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model_config = vllm_config.model_config
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if model_config.dtype == torch.bfloat16:
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logger.warning(
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"bfloat16 is not fully supported on XPU, casting to float16.")
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model_config.dtype = torch.float16
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if not model_config.enforce_eager:
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logger.warning(
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"CUDA graph is not supported on XPU, fallback to the eager "
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"mode.")
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model_config.enforce_eager = True
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if vllm_config.speculative_config is not None:
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raise NotImplementedError(
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"XPU does not support speculative decoding")
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# check and update parallel config
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parallel_config = vllm_config.parallel_config
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if (parallel_config.distributed_executor_backend is not None
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and parallel_config.distributed_executor_backend != "ray"):
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logger.warning(
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"%s is not supported on XPU, fallback to ray distributed"
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" executor backend.",
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parallel_config.distributed_executor_backend)
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parallel_config.distributed_executor_backend = "ray"
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if parallel_config.worker_cls == "auto":
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parallel_config.worker_cls = "vllm.worker.xpu_worker.XPUWorker"
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