8cfd257992
### What this PR does / why we need it?
Remove ETP/EP maintained in branch main. We drop this as there is no
relevant scenarios to use ETP now, and we may subsequently advocate
implementing expert tensor parallelism in vLLM to support scenarios
where the expert is needed to be sliced
This is a part of #1422 backport.
Fixes https://github.com/vllm-project/vllm-ascend/issues/1396
https://github.com/vllm-project/vllm-ascend/issues/1154
### Does this PR introduce _any_ user-facing change?
We'll not maintain etp/ep in vllm-ascend anymore, and use the tp/ep in
vllm instead.
### How was this patch tested?
CI passed with new added and existing test.
- vLLM version: v0.9.2
- vLLM main:
fe8a2c544a
Signed-off-by: MengqingCao <cmq0113@163.com>
281 lines
11 KiB
Python
281 lines
11 KiB
Python
#
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# Copyright (c) 2025 Huawei Technologies Co., Ltd. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# This file is a part of the vllm-ascend project.
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#
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import gc
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from datetime import timedelta
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from typing import TYPE_CHECKING, Optional, Tuple
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import torch
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import vllm.envs as envs
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from torch.distributed import ProcessGroup
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from torch.distributed.distributed_c10d import PrefixStore
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from vllm.logger import logger
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from vllm.platforms import Platform, PlatformEnum
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from vllm_ascend.ascend_config import (check_ascend_config, get_ascend_config,
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init_ascend_config)
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from vllm_ascend.utils import (ASCEND_QUATIZATION_METHOD, is_310p,
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register_ascend_customop, update_aclgraph_sizes)
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if TYPE_CHECKING:
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from vllm.config import ModelConfig, VllmConfig
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from vllm.utils import FlexibleArgumentParser
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else:
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ModelConfig = None
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VllmConfig = None
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FlexibleArgumentParser = None
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class NPUPlatform(Platform):
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_enum = PlatformEnum.OOT
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device_name: str = "npu"
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device_type: str = "npu"
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simple_compile_backend: str = "eager" # Disable torch.compile()
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ray_device_key: str = "NPU"
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device_control_env_var: str = "ASCEND_RT_VISIBLE_DEVICES"
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dispatch_key: str = "PrivateUse1"
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supported_quantization: list[str] = [ASCEND_QUATIZATION_METHOD]
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def is_sleep_mode_available(self) -> bool:
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return True
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@classmethod
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def pre_register_and_update(cls,
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parser: Optional[FlexibleArgumentParser] = None
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) -> None:
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# Adapt the global patch here.
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from vllm_ascend.utils import adapt_patch
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adapt_patch(is_global_patch=True)
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# For online serving, "ascend" quantization method is not a choice natively,
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# so we need to add "ascend" quantization method to quantization methods list
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# and the user can enable quantization using "vllm serve --quantization ascend".
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if parser is not None:
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quant_action = parser._option_string_actions.get('--quantization')
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if quant_action and hasattr(quant_action,
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'choices') and quant_action.choices:
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if ASCEND_QUATIZATION_METHOD not in quant_action.choices:
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quant_action.choices.append(ASCEND_QUATIZATION_METHOD)
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from vllm_ascend.quantization.quant_config import \
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AscendQuantConfig # noqa: F401
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@classmethod
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def get_device_capability(cls, device_id: int = 0):
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return None
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@classmethod
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def get_device_name(cls, device_id: int = 0) -> str:
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return torch.npu.get_device_name(device_id)
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@classmethod
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def is_async_output_supported(cls, enforce_eager: Optional[bool]) -> bool:
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return True
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@classmethod
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def inference_mode(cls):
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return torch.inference_mode()
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@classmethod
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def set_device(cls, device: torch.device):
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torch.npu.set_device(device)
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@classmethod
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def empty_cache(cls):
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torch.npu.empty_cache()
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@classmethod
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def synchronize(cls):
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torch.npu.synchronize()
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@classmethod
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def mem_get_info(cls) -> Tuple[int, int]:
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return torch.npu.mem_get_info()
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@classmethod
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def clear_npu_memory(cls):
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gc.collect()
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torch.npu.empty_cache()
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torch.npu.reset_peak_memory_stats()
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@classmethod
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def check_and_update_config(cls, vllm_config: VllmConfig) -> None:
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if not envs.VLLM_USE_V1:
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raise ValueError("vLLM Ascend does not support V0 engine.")
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# initialize ascend config from vllm additional_config
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ascend_config = init_ascend_config(vllm_config)
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from vllm.config import CompilationLevel # noqa: E402
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compilation_config = vllm_config.compilation_config
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model_config = vllm_config.model_config
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parallel_config = vllm_config.parallel_config
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cache_config = vllm_config.cache_config
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kv_cache_dtype = vllm_config.additional_config.get(
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"kv_cache_dtype", None)
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if kv_cache_dtype is not None:
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vllm_config.cache_config.cache_dtype = kv_cache_dtype
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if model_config is None:
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logger.warning("Model config is missing. This may indicate "
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"that we are running a test case")
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enforce_eager = False
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else:
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enforce_eager = getattr(model_config, "enforce_eager", False)
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check_ascend_config(vllm_config, enforce_eager)
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if enforce_eager or compilation_config.level == CompilationLevel.NO_COMPILATION:
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logger.info("Compilation disabled, using eager mode by default")
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compilation_config.level = CompilationLevel.NO_COMPILATION
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elif compilation_config.level != CompilationLevel.PIECEWISE:
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logger.warning(
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"NPU does not support %s compilation level. Setting level to NO_COMPILATION",
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compilation_config.level)
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compilation_config.level = CompilationLevel.NO_COMPILATION
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elif ascend_config.torchair_graph_config.enabled:
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logger.info(
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"Torchair compilation enabled on NPU. Setting level to NO_COMPILATION"
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)
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compilation_config.level = CompilationLevel.NO_COMPILATION
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else:
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logger.info(
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"PIECEWISE compilation enabled on NPU. use_inductor not supported - "
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"using only ACL Graph mode")
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compilation_config.use_inductor = False
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compilation_config.splitting_ops.extend(
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["vllm.unified_ascend_attention_with_output"])
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update_aclgraph_sizes(vllm_config)
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if parallel_config and parallel_config.worker_cls == "auto":
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parallel_config.worker_cls = "vllm_ascend.worker.worker_v1.NPUWorker"
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if cache_config:
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if cache_config.block_size is None:
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cache_config.block_size = 128
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if cache_config.enable_prefix_caching and cache_config.block_size != 128:
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logger.warning(
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"If prefix caching is enabled, block size must be set to 128."
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)
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cache_config.block_size = 128
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# Activate custom ops for v1, except on 310P
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if not is_310p():
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compilation_config.custom_ops = ["all"]
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# If ascend_scheduler_config is enabled,
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# extents original scheduler_config to use AscendScheduler.
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if ascend_config.ascend_scheduler_config.enabled:
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from vllm_ascend.core.schedule_config import AscendSchedulerConfig
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ascend_scheduler_config = AscendSchedulerConfig.initialize_from_config(
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vllm_config.scheduler_config,
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ascend_config.ascend_scheduler_config)
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vllm_config.scheduler_config = ascend_scheduler_config
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# register Ascend CustomOp
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register_ascend_customop()
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@classmethod
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def get_attn_backend_cls(cls, selected_backend, head_size, dtype,
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kv_cache_dtype, block_size, use_v1, use_mla):
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if not use_v1:
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raise ValueError("vLLM Ascend does not support V0 engine.")
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use_torchair = get_ascend_config().torchair_graph_config.enabled
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if use_mla:
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return "vllm_ascend.attention.mla_v1.AscendMLABackend"
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elif use_torchair:
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return "vllm_ascend.attention.attention_v1_torchair.AscendAttentionTorchairBackend"
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else:
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return "vllm_ascend.attention.attention_v1.AscendAttentionBackend"
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@classmethod
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def get_punica_wrapper(cls) -> str:
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return "vllm_ascend.lora.punica_wrapper.punica_npu.PunicaWrapperNPU"
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@classmethod
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def get_current_memory_usage(cls,
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device: Optional[torch.types.Device] = None
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) -> float:
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torch.npu.reset_peak_memory_stats(device)
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return torch.npu.max_memory_allocated(device)
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@classmethod
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def get_device_communicator_cls(cls) -> str:
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return "vllm_ascend.distributed.communicator.NPUCommunicator"
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@classmethod
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def is_pin_memory_available(cls):
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return True
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@classmethod
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def supports_v1(cls, model_config: ModelConfig) -> bool:
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"""Returns whether the current platform can support v1 for the supplied
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model configuration.
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"""
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return True
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@classmethod
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def get_piecewise_backend_cls(cls) -> str:
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"""
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Get piecewise backend class for piecewise graph.
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"""
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return "vllm_ascend.compilation.piecewise_backend.NPUPiecewiseBackend" # noqa
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@classmethod
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def stateless_init_device_torch_dist_pg(
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cls,
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backend: str,
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prefix_store: PrefixStore,
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group_rank: int,
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group_size: int,
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timeout: timedelta,
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) -> ProcessGroup:
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from torch.distributed import is_hccl_available
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from torch_npu._C._distributed_c10d import ProcessGroupHCCL
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assert is_hccl_available()
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# TODO(Yizhou): The reason we need to set options while vllm does not
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# seems to be related to the version of PyTorch. In the latest version,
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# there is no need to set options. While in the older version, 2.5.1
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# specifically, we need to set options.
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options = ProcessGroup.Options(backend=backend)
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pg: ProcessGroup = ProcessGroup(
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prefix_store,
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group_rank,
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group_size,
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options,
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)
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backend_options = ProcessGroupHCCL.Options()
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backend_options._timeout = timeout
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backend_class = ProcessGroupHCCL(prefix_store, group_rank, group_size,
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backend_options)
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device = torch.device("npu")
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# TODO(Yizhou): Like we mentioned above, _set_default_backend is not
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# implemented in the 2.5.1 version of PyTorch. But we need to set it
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# after the latest version is released.
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# pg._set_default_backend(backend_type)
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backend_class._set_sequence_number_for_group()
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backend_type = ProcessGroup.BackendType.CUSTOM
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pg._register_backend(device, backend_type, backend_class)
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return pg
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