68 lines
2.3 KiB
Python
68 lines
2.3 KiB
Python
# SPDX-License-Identifier: Apache-2.0
|
|
|
|
from typing import List
|
|
|
|
from torch import fx as fx
|
|
|
|
from vllm.config import CompilationConfig
|
|
from vllm.logger import init_logger
|
|
|
|
from .fix_functionalization import FixFunctionalizationPass
|
|
from .fusion import FusionPass
|
|
from .inductor_pass import CustomGraphPass, InductorPass
|
|
from .noop_elimination import NoOpEliminationPass
|
|
|
|
logger = init_logger(__name__)
|
|
|
|
|
|
class PostGradPassManager(CustomGraphPass):
|
|
"""
|
|
The pass manager for post-grad passes.
|
|
It handles configuration, adding custom passes, and running passes.
|
|
It supports uuid for the Inductor code cache. That includes torch<2.6
|
|
support using pickling (in .inductor_pass.CustomGraphPass).
|
|
|
|
The order of the post-grad post-passes is:
|
|
1. passes (constructor parameter)
|
|
2. default passes (NoopEliminationPass, FusionPass)
|
|
3. config["post_grad_custom_post_pass"] (if it exists)
|
|
4. fix_functionalization
|
|
This way, all passes operate on a functionalized graph.
|
|
"""
|
|
|
|
def __init__(self):
|
|
self.passes: List[InductorPass] = []
|
|
|
|
def __call__(self, graph: fx.Graph):
|
|
for pass_ in self.passes:
|
|
pass_(graph)
|
|
|
|
# always run fix_functionalization last
|
|
self.fix_functionalization(graph)
|
|
|
|
def configure(self, pass_config: CompilationConfig.PassConfig):
|
|
self.pass_config = pass_config
|
|
if pass_config.enable_noop:
|
|
self.passes += [NoOpEliminationPass(pass_config)]
|
|
|
|
if pass_config.enable_fusion:
|
|
self.passes += [FusionPass.instance(pass_config)]
|
|
|
|
self.fix_functionalization = FixFunctionalizationPass(pass_config)
|
|
|
|
def add(self, pass_: InductorPass):
|
|
assert isinstance(pass_, InductorPass)
|
|
self.passes.append(pass_)
|
|
|
|
def uuid(self):
|
|
"""
|
|
The PostGradPassManager is set as a custom pass in the Inductor and
|
|
affects compilation caching. Its uuid depends on the UUIDs of all
|
|
dependent passes and the pass config. See InductorPass for more info.
|
|
"""
|
|
state = {"pass_config": self.pass_config.uuid(), "passes": []}
|
|
for pass_ in self.passes:
|
|
state["passes"].append(pass_.uuid())
|
|
state["passes"].append(self.fix_functionalization.uuid())
|
|
return InductorPass.hash_dict(state)
|