Pr pipeline stage

[zty-king]

PR Category

Auto Parallel

PR Types

Others

Description

优化了一些PipelineStage框架中的代码，同时提交关于PipelineStage框架的单测，对比了朴素流水并行，以及单卡视角下的训练结果loss，来验证PipelineStage框架的可行性和准确性，v-schedules需要更多的开发代码，因此此处仅对其相关的函数进行简单测试。

[paddle-bot[bot]]

你的PR提交成功，感谢你对开源项目的贡献! 请关注后续CI自动化测试结果，详情请参考Paddle-CI手册。 Your PR has been submitted. Thanks for your contribution! Please wait for the result of CI firstly. See Paddle CI Manual for details.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 91.23506% with 44 lines in your changes missing coverage. Please review.

Please upload report for BASE (develop@b1582fd). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
...ddle/distributed/auto_parallel/pipelining/stage.py	90.90%	35 Missing :warning:
.../distributed/auto_parallel/pipelining/_backward.py	89.36%	5 Missing :warning:
...ddle/distributed/auto_parallel/pipelining/utils.py	94.20%	4 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             develop   #72697   +/-   ##
==========================================
  Coverage           ?   91.23%           
==========================================
  Files              ?        4           
  Lines              ?      502           
  Branches           ?        0           
==========================================
  Hits               ?      458           
  Misses             ?       44           
  Partials           ?        0           

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[paddle-ci-bot[bot]]

Sorry to inform you that 9e18f2f's CIs have passed for more than 7 days. To prevent PR conflicts, you need to re-run all CIs manually.

[paddle-ci-bot[bot]]

Sorry to inform you that 2a2a7da's CIs have passed for more than 7 days. To prevent PR conflicts, you need to re-run all CIs manually.