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[Dy2St][CINN] Dont access cpp flag `FLAGS_use_cinn` via `os.getenv` by SigureMo · Pull Request #71817 · PaddlePaddle/Paddle · GitHub
[Dy2St][CINN] Dont access cpp flag
[Dy2St][CINN] Dont access cpp flag
SigureMo
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qili93
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March 20, 2025 16:52
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March 20, 2025 16:53
SigureMo
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[Dy2St][CINN] Dont get cpp flag
[Dy2St][CINN] Dont access cpp flag Mar 20, 2025
SigureMo
changed the title
[Dy2St][CINN] Dont access cpp flag
[Dy2St][CINN] Dont access cpp flag Mar 21, 2025
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[Dy2St][CINN] Dont access cpp flag FLAGS_use_cinn via os.getenv
#71817
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Merged
SigureMo
merged 4 commits into
PaddlePaddle:develop
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cattidea:dy2st/dont-get-cpp-flag-use-cinn-by-os-getenv
Mar 21, 2025
Merged
[Dy2St][CINN] Dont access cpp flag FLAGS_use_cinn via os.getenv
#71817
SigureMo
merged 4 commits into
PaddlePaddle:develop
from
cattidea:dy2st/dont-get-cpp-flag-use-cinn-by-os-getenv
Mar 21, 2025
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SigureMo
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你的PR提交成功，感谢你对开源项目的贡献! |
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Pull Request Overview
This PR ensures that all accesses to the FLAGS_use_cinn flag use a unified C++ flag interface rather than relying on environment variables. Key changes include:
- Adding a flag_guard context manager in framework.py for temporary flag setting.
- Updating in_cinn_mode and related API calls to use paddle.get_flags instead of os.getenv.
- Removing a redundant flag_guard from the tests and standardizing flag naming in test files.
Reviewed Changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| python/paddle/base/framework.py | Added flag_guard context manager and updated in_cinn_mode to use paddle.get_flags. |
| python/paddle/jit/dy2static/utils.py | Replaced os.getenv check with a call to in_cinn_mode. |
| test/ir/pir/test_cse_pass.py | Removed duplicate flag_guard implementation and updated flag naming to CINN_FLAG_NAME. |
SigureMo
changed the title
FLAGS_use_cinn by os.getenvFLAGS_use_cinn by os.getenv
zyfncg
approved these changes
Mar 21, 2025
SigureMo
changed the title
FLAGS_use_cinn by os.getenvFLAGS_use_cinn via os.getenv
This was referenced Mar 21, 2025
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May 7, 2025
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PR Category
Execute Infrastructure
PR Types
Devs
Description
确保所有
FLAGS_use_cinn的设置与获取都使用单一数据来源，即 C++ 的 flag 状态，这个状态是 Python/C++ 统一的，不应该在import paddle之后设置和访问对应的环境变量，这往往会导致数据不同步，难以维护，局部修改注意使用 guard 避免 side effect 意外扩散到后续操作C++ flag（即在
flags.cc声明的，FLAGS_开头的大多数是），此类主要用于需要 C++ 代码直接感知，应该统一使用以下 API（数据会存在 C++ 侧，不应该存在其他地方）flags.ccpaddle.set_flagspaddle.get_flagspaddle.base.framework.flag_guard而非 C++ flag，此类主要用于纯 Python 代码感知，应该使用以下 API（数据会存在环境变量中，不应该存在其他地方）
python/paddle/utils/environments.py::EnvironmentVariable实例ENV_xxx（如环境变量AAA_BBB_CCC应该对应ENV_AAA_BBB_CCC实例）ENV_xxx.setENV_xxx.getpython/paddle/utils/environments.py::EnvironmentVariableGuard