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【pir】modify test_optimizer_grad.py by xiaoguoguo626807 · Pull Request #61661 · PaddlePaddle/Paddle · GitHub
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【pir】modify test_optimizer_grad.py #61661
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Merged
xiaoguoguo626807
merged 1 commit into
PaddlePaddle:develop
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xiaoguoguo626807:optimize
Feb 8, 2024
Merged
【pir】modify test_optimizer_grad.py #61661
xiaoguoguo626807
merged 1 commit into
PaddlePaddle:develop
from
xiaoguoguo626807:optimize
Feb 8, 2024
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你的PR提交成功，感谢你对开源项目的贡献! |
changeyoung98
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Feb 7, 2024
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LGTM
sunzhongkai588
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LGTM
jeff41404
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Description
pcard-67164
修复test_optimizer_grad.py中单测，if 中的输入如果被if外的op使用，在if_grad创建时state中有对应的梯度，此梯度在if 的两个block 中都会被add_n 成一个结果作为if 的输出，因此需要在子block 处理反向前保存，下一个子block 处理前恢复。同时在if_grad处理完成后将state清空，只更新if_grad 产生的梯度值，否则会导致if外op 产生的梯度多累加一次。 此处的处理和之前inplace 的输入本质相同，因此归一处理
todo 目前当单测命中true分支后，梯度计算正确，但参数更新精度有误，原因是pir 的parameters 没有optimizer_attr属性，使得学习率的倍数没有奏效