Russell Bryant
e489ad7a21
- **Add SPDX license headers to python source files** - **Check for SPDX headers using pre-commit** commit 9d7ef44c3cfb72ca4c32e1c677d99259d10d4745 Author: Russell Bryant <rbryant@redhat.com> Date: Fri Jan 31 14:18:24 2025 -0500 Add SPDX license headers to python source files This commit adds SPDX license headers to python source files as recommended to the project by the Linux Foundation. These headers provide a concise way that is both human and machine readable for communicating license information for each source file. It helps avoid any ambiguity about the license of the code and can also be easily used by tools to help manage license compliance. The Linux Foundation runs license scans against the codebase to help ensure we are in compliance with the licenses of the code we use, including dependencies. Having these headers in place helps that tool do its job. More information can be found on the SPDX site: - https://spdx.dev/learn/handling-license-info/ Signed-off-by: Russell Bryant <rbryant@redhat.com> commit 5a1cf1cb3b80759131c73f6a9dddebccac039dea Author: Russell Bryant <rbryant@redhat.com> Date: Fri Jan 31 14:36:32 2025 -0500 Check for SPDX headers using pre-commit Signed-off-by: Russell Bryant <rbryant@redhat.com> --------- Signed-off-by: Russell Bryant <rbryant@redhat.com>
80 lines
2.7 KiB
Python
80 lines
2.7 KiB
Python
# SPDX-License-Identifier: Apache-2.0
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from typing import Any, Dict, List
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from torch import fx as fx
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from vllm.config import CompilationConfig
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from vllm.logger import init_logger
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from .fix_functionalization import FixFunctionalizationPass
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from .fusion import FusionPass
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from .inductor_pass import InductorPass
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from .reshapes import RedundantReshapesPass
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logger = init_logger(__name__)
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class PostGradPassManager:
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"""
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The pass manager for post-grad passes.
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It handles configuration, adding custom passes, and running passes.
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It also supports pickling, which is used by the Inductor code cache.
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TODO(torch==2.6), use CustomGraphPass
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(torch._inductor.custom_graph_pass.CustomGraphPass)
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The order of the post-grad post-passes is:
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1. passes (constructor parameter)
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2. default passes (RedundantReshapesPass, FusionPass)
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3. config["post_grad_custom_post_pass"] (if it exists)
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4. fix_functionalization
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This way, all passes operate on a functionalized graph.
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"""
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def __init__(self):
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self.passes: List[InductorPass] = []
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def __call__(self, graph: fx.Graph):
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for pass_ in self.passes:
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pass_(graph)
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# always run fix_functionalization last
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self.fix_functionalization(graph)
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def configure(self, pass_config: CompilationConfig.PassConfig):
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self.pass_config = pass_config
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if pass_config.enable_reshape:
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self.passes += [RedundantReshapesPass(pass_config)]
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if pass_config.enable_fusion:
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self.passes += [FusionPass.instance(pass_config)]
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self.fix_functionalization = FixFunctionalizationPass(pass_config)
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def add(self, pass_: InductorPass):
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assert isinstance(pass_, InductorPass)
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self.passes.append(pass_)
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def __getstate__(self) -> Dict[str, List[Any]]:
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"""
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Custom pickling for the pass manager, as some passes cannot be pickled.
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Pickling occurs because the pass manager is set as the value of
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`config["post_grad_custom_post_pass"]` in the Inductor config.
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The config is pickled to act as a key in the Inductor code cache.
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Any other passes in the config are pickled as well.
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TODO(torch==2.6), use the `uuid` method in CustomGraphPass instead.
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"""
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state = {"pass_config": self.pass_config.uuid(), "passes": []}
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for pass_ in self.passes:
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state["passes"].append(pass_.uuid())
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state["passes"].append(self.fix_functionalization.uuid())
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return state
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def __setstate__(self, state):
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"""
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Do not allow unpickling of the pass manager.
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If this is needed in the future, it should properly pickle the passes.
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"""
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raise ValueError("Cannot unpickle PostGradPassManager")
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