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【pir&npu】fix fetch op with memcpy_d2h use Npu indentity kernel. by xiaoguoguo626807 · Pull Request #72149 · PaddlePaddle/Paddle · GitHub
xiaoguoguo626807
merged commit Apr 10, 2025
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【pir&npu】fix fetch op with memcpy_d2h use Npu indentity kernel. #72149
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Merged
xiaoguoguo626807
merged 10 commits into
PaddlePaddle:develop
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xiaoguoguo626807:npu_indentity
Apr 10, 2025
Merged
【pir&npu】fix fetch op with memcpy_d2h use Npu indentity kernel. #72149
xiaoguoguo626807
merged 10 commits into
PaddlePaddle:develop
from
xiaoguoguo626807:npu_indentity
Apr 10, 2025
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你的PR提交成功，感谢你对开源项目的贡献! |
… npu_indentity
changeyoung98
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LGTM
xiaoguoguo626807
merged commit 7e2c9ed
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May 7, 2025
…lePaddle#72149) * modify place error * modify place error * modify RemoveRedundantMemcpyAfterShadowFeed * change input place by next op need * recover * add npu memcpy_d2h choose * add npu memcpy_d2h choose
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PR Category
Execute Infrastructure
PR Types
Bug fixes
Description
pcard-67164
x_data = paddle.static.data(shape=self.shape, name="data", dtype="float32")
output = paddle.incubate._npu_identity(x=x_data, format=self.format)
上述网络在PIR 下输出有误，原因是npu_identity b=不只是内存拷贝，还会根据format 修改内存布局，因此从npu 拷贝到cpu 时也需要用专用的kernel.
pir 的memcpy_d2h kernel 选择逻辑是按照src_place .type() 选backend, 所有的custom place 都选择custom backend ， 而npu 注册了自己的kernel没被选到。 修改选kernel的逻辑，如果是customplace, 按照value.place 构造fake tensor， 进行kernr key set准备，按照优先级选到npu kernel。