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Construct backward pass in Program/BlockDesc #4521

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reyoung opened this issue Sep 29, 2017 · 2 comments
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Construct backward pass in Program/BlockDesc #4521

reyoung opened this issue Sep 29, 2017 · 2 comments
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reyoung commented Sep 29, 2017 •
edited by wangkuiyi
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Currently, we have a function named Backward which creates C++ operator instances that compose the backward pass. However, as we decided to separate compilation from execution, we need to make Backward operate the ProgramDesc, BlockDesc, and OpDesc, instead of creating the runtime representation of the backward pass.

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@reyoung reyoung self-assigned this Sep 29, 2017
@wangkuiyi wangkuiyi changed the title Backward Function for OpDesc Construct backward pass in Program/BlockDesc Sep 29, 2017
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wangkuiyi commented Oct 2, 2017 •
edited by JiayiFeng
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@reyoung is implementing #4517 -- registration mechanism.

@Canpio port backward-pass generation algorithm from runtime to compile time. #4556

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reyoung commented Oct 9, 2017

Done.

@reyoung reyoung closed this as completed Oct 9, 2017
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