Files
xc-llm-ascend/vllm_ascend/worker/worker_v1.py
zzzzwwjj 23ca68d0c8 [refactor] Refactoring AscendFusedMoE (#1229)
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### What this PR does / why we need it?
This PR is used for resolved [issue
1147](https://github.com/vllm-project/vllm-ascend/issues/1147)
1. Move fused_moe code into one file `fused_moe.py`.
2. Integrate branch conditions into function `get_fused_moe_state`.
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### Does this PR introduce _any_ user-facing change?
1. This PR has removed the env `VLLM_ENABLE_MC2`, because I think this
env is useless, we can make judgments based on the current scenario
without this env, it will only increase complexity.
2. This PR has removed the env `USING_LCCL_COM`, because this env has
already expired.
3. `additional_config.expert_tensor_parallel_size` has already expired,
and now we also use parameter `enable_expert_parallel`, consistent with
the vLLM.
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Signed-off-by: zzzzwwjj <1183291235@qq.com>
2025-06-17 17:49:03 +08:00

312 lines
13 KiB
Python

#
# Copyright (c) 2025 Huawei Technologies Co., Ltd. All Rights Reserved.
# Copyright 2023 The vLLM team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# This file is a part of the vllm-ascend project.
# Adapted from vllm-project/vllm/vllm/worker/gpu_worker.py
#
from typing import Optional
import torch
import torch.nn as nn
import torch_npu
from torch_npu.op_plugin.atb._atb_ops import _register_atb_extensions
from vllm import envs
from vllm.config import VllmConfig
from vllm.distributed import (ensure_model_parallel_initialized,
init_distributed_environment,
set_custom_all_reduce)
from vllm.distributed.kv_transfer import ensure_kv_transfer_initialized
from vllm.logger import logger
from vllm.lora.request import LoRARequest
from vllm.model_executor import set_random_seed
from vllm.utils import STR_DTYPE_TO_TORCH_DTYPE, GiB_bytes
from vllm.v1.core.sched.output import SchedulerOutput
from vllm.v1.kv_cache_interface import KVCacheConfig, KVCacheSpec
from vllm.v1.outputs import ModelRunnerOutput
from vllm.v1.worker.worker_base import WorkerBase
from vllm_ascend.ascend_config import init_ascend_config
from vllm_ascend.device_allocator.camem import CaMemAllocator
from vllm_ascend.distributed.parallel_state import init_ascend_model_parallel
from vllm_ascend.platform import NPUPlatform
from vllm_ascend.utils import try_register_lib
from vllm_ascend.worker.model_runner_v1 import NPUModelRunner
class NPUWorker(WorkerBase):
def __init__(
self,
vllm_config: VllmConfig,
local_rank: int,
rank: int,
distributed_init_method: str,
is_driver_worker: bool = False,
# Additional parameters for compatibility with vllm
**kwargs):
"""Initialize the worker for Ascend."""
# register patch for vllm
from vllm_ascend.utils import adapt_patch
adapt_patch()
# Register ops when worker init.
from vllm_ascend import ops
ops.register_dummy_fusion_op()
_register_atb_extensions()
# init ascend config
init_ascend_config(vllm_config)
super().__init__(vllm_config=vllm_config,
local_rank=local_rank,
rank=rank,
distributed_init_method=distributed_init_method,
is_driver_worker=is_driver_worker)
# Try to import mindie_turbo to accelerate vLLM inference.
try_register_lib(
"mindie_turbo",
"MindIE Turbo is installed. vLLM inference will be accelerated with MindIE Turbo."
)
if self.cache_config.cache_dtype == "auto":
self.cache_dtype = self.model_config.dtype
else:
self.cache_dtype = STR_DTYPE_TO_TORCH_DTYPE[
self.cache_config.cache_dtype]
if self.model_config.trust_remote_code:
# note: lazy import to avoid importing torch before initializing
from vllm.utils import init_cached_hf_modules
init_cached_hf_modules()
self.profiler = self._init_profiler()
def sleep(self, level: int = 1) -> None:
NPUPlatform.set_device(self.device)
free_bytes_before_sleep = NPUPlatform.mem_get_info()[0]
allocator = CaMemAllocator.get_instance()
allocator.sleep(offload_tags=("weights", ) if level == 1 else tuple())
free_bytes_after_sleep, total = NPUPlatform.mem_get_info()
freed_bytes = free_bytes_after_sleep - free_bytes_before_sleep
used_bytes = total - free_bytes_after_sleep
assert freed_bytes >= 0, "Memory usage increased after sleeping."
logger.info(
"Sleep mode freed %.2f GiB memory, "
"%.2f GiB memory is still in use.", freed_bytes / GiB_bytes,
used_bytes / GiB_bytes)
def wake_up(self, tags: Optional[list[str]] = None) -> None:
allocator = CaMemAllocator.get_instance()
allocator.wake_up(tags=tags)
def initialize_cache(self, num_gpu_blocks: int,
num_cpu_blocks: int) -> None:
self.cache_config.num_gpu_blocks = num_gpu_blocks
self.cache_config.num_cpu_blocks = num_cpu_blocks
def init_device(self):
if self.device_config.device.type == "npu":
self.device = torch.device(f"npu:{self.local_rank}")
NPUPlatform.set_device(self.device)
NPUPlatform.empty_cache()
self.init_npu_memory = NPUPlatform.mem_get_info()[0]
else:
info = f"Not support device type: {self.device_config.device}"
logger.error(info)
raise RuntimeError(info)
# Initialize the distributed environment.
self._init_worker_distributed_environment()
# Set random seed.
set_random_seed(self.model_config.seed)
# Init ModelRunner here, so that we have access to self.device.
self.model_runner = NPUModelRunner(self.vllm_config, self.device)
def determine_available_memory(self) -> int:
# Profile the memory usage of the model and get the maximum number of
# cache blocks that can be allocated with the remaining free memory.
NPUPlatform.clear_npu_memory()
# Execute a forward pass with dummy inputs to profile the memory usage
# of the model.
_, total_npu_memory = NPUPlatform.mem_get_info()
self.model_runner.profile_run()
# Calculate the number of blocks that can be allocated with the
# profiled peak memory.
free_npu_memory, _ = NPUPlatform.mem_get_info()
# NOTE(woosuk): Here we assume that the other processes using the same
# GPU did not change their memory usage during the profiling.
assert self.init_npu_memory > free_npu_memory, (
"Error in memory profiling. "
f"Initial free memory {self.init_npu_memory}, current free memory"
f" {free_npu_memory}. This happens when the NPU memory was "
"not properly cleaned up before initializing the vLLM instance.")
# Get the peak memory allocation recorded by torch
peak_memory = torch_npu.npu.memory_stats()["allocated_bytes.all.peak"]
# TODO: don`t need impl this func after empty_cache in
# Worker.determine_num_available_blocks() unified`
NPUPlatform.empty_cache()
torch_allocated_bytes = torch_npu.npu.memory_stats(
)["allocated_bytes.all.current"]
total_allocated_bytes = torch_npu.npu.mem_get_info(
)[1] - torch_npu.npu.mem_get_info()[0]
non_torch_allocations = total_allocated_bytes - torch_allocated_bytes
if non_torch_allocations > 0:
peak_memory += non_torch_allocations
available_kv_cache_memory = (
total_npu_memory * self.cache_config.gpu_memory_utilization -
peak_memory)
return int(available_kv_cache_memory)
def execute_model(
self,
scheduler_output: "SchedulerOutput",
) -> Optional[ModelRunnerOutput]:
output = self.model_runner.execute_model(scheduler_output)
return output if self.is_driver_worker else None
def load_model(self) -> None:
if self.vllm_config.model_config.enable_sleep_mode:
allocator = CaMemAllocator.get_instance()
assert allocator.get_current_usage() == 0, (
"Sleep mode can only be "
"used for one instance per process.")
context = allocator.use_memory_pool(tag="weights")
else:
from contextlib import nullcontext
context = nullcontext() # type: ignore
with context:
self.model_runner.load_model()
def compile_or_warm_up_model(self) -> None:
warmup_sizes = self.vllm_config.compilation_config.compile_sizes.copy()
if not self.model_config.enforce_eager:
warmup_sizes = [
x for x in warmup_sizes if x not in
self.vllm_config.compilation_config.cudagraph_capture_sizes
]
for size in sorted(warmup_sizes, reverse=True):
logger.info("Compile and warming up model for size %d", size)
self.model_runner._dummy_run(size)
if not self.model_config.enforce_eager:
self.model_runner.capture_model()
# Reset the seed to ensure that the random state is not affected by
# the model initialization and profiling.
set_random_seed(self.model_config.seed)
def get_model(self) -> nn.Module:
return self.model_runner.get_model()
def get_kv_cache_spec(self) -> dict[str, KVCacheSpec]:
return self.model_runner.get_kv_cache_spec()
def initialize_from_config(self, kv_cache_config: KVCacheConfig) -> None:
"""Allocate NPU KV cache with the specified kv_cache_config."""
if self.vllm_config.model_config.enable_sleep_mode:
allocator = CaMemAllocator.get_instance()
context = allocator.use_memory_pool(tag="kv_cache")
else:
from contextlib import nullcontext
context = nullcontext() # type: ignore
with context:
self.model_runner.initialize_kv_cache(kv_cache_config)
def profile(self, is_start: bool = True):
if self.profiler is None:
raise RuntimeError("Profiler is not enabled.")
if is_start:
self.profiler.start()
else:
self.profiler.stop()
def add_lora(self, lora_request: LoRARequest) -> bool:
return self.model_runner.add_lora(lora_request)
def remove_lora(self, lora_id: int) -> bool:
return self.model_runner.remove_lora(lora_id)
def list_loras(self) -> set[int]:
return self.model_runner.list_loras()
def pin_lora(self, lora_id: int) -> bool:
return self.model_runner.pin_lora(lora_id)
def execute_dummy_batch(self) -> None:
runner = self.model_runner
max_num_tokens = 1
with_prefill = False
if runner.dp_size > 1:
max_num_tokens, with_prefill = runner._get_forward_metadata_across_dp(
max_num_tokens, with_prefill)
if runner.torchair_graph_enabled and not with_prefill:
max_num_tokens = runner.select_torchair_padded_batch_size(
max_num_tokens)
runner._dummy_run(max_num_tokens,
is_compile=False,
with_prefill=with_prefill)
def _init_worker_distributed_environment(self) -> None:
"""Initialize the distributed environment."""
parallel_config = self.vllm_config.parallel_config
set_custom_all_reduce(
not self.parallel_config.disable_custom_all_reduce)
init_distributed_environment(self.parallel_config.world_size,
self.rank, self.distributed_init_method,
self.local_rank, "hccl")
ensure_model_parallel_initialized(
self.parallel_config.tensor_parallel_size,
self.parallel_config.pipeline_parallel_size)
init_ascend_model_parallel(
parallel_config.expert_parallel_size,
parallel_config.expert_tensor_parallel_size,
parallel_config.world_size_across_dp,
)
ensure_kv_transfer_initialized(self.vllm_config)
def _init_profiler(self):
# Torch profiler. Enabled and configured through env vars:
# VLLM_TORCH_PROFILER_DIR=/path/to/save/trace
if envs.VLLM_TORCH_PROFILER_DIR:
torch_profiler_trace_dir = envs.VLLM_TORCH_PROFILER_DIR
logger.info("Profiling enabled. Traces will be saved to: %s",
torch_profiler_trace_dir)
experimental_config = torch_npu.profiler._ExperimentalConfig(
export_type=torch_npu.profiler.ExportType.Text,
profiler_level=torch_npu.profiler.ProfilerLevel.Level1,
msprof_tx=False,
aic_metrics=torch_npu.profiler.AiCMetrics.AiCoreNone,
l2_cache=False,
op_attr=False,
data_simplification=False,
record_op_args=False,
gc_detect_threshold=None,
)
return torch_npu.profiler.profile(
activities=[
torch_npu.profiler.ProfilerActivity.CPU,
torch_npu.profiler.ProfilerActivity.NPU,
],
with_stack=False,
profile_memory=False,
with_modules=False,
experimental_config=experimental_config,
on_trace_ready=torch_npu.profiler.tensorboard_trace_handler(
torch_profiler_trace_dir))
else:
return None