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v2 API 不支持Timer，不支持CPU/GPU 混合运算，不支持训练中输出梯度统计信息。 #3040

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lcy-seso opened this issue Jul 25, 2017 · 0 comments

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Good Question need be discussed

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lcy-seso commented Jul 25, 2017 •

edited by wangkuiyi

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以下功能，v2 API 不支持，但原Paddle支持，这些功能还有计划后续支持吗？还是要等重构完成？

这些功能对开发/优化/训练模型重要，让 v2 API 的使用非常痛苦。

不支持输出训练样本集上的 Average cost / average evaluation 结果，不支持输出已经处理了多少样本（https://github.com/PaddlePaddle/Paddle/issues/3211）
- 这些功能并不难实现，但是学习任务的调试分析，也依赖基础的信息！请不要让这些基础的信息每次都让用户自己来处理。
- 程序不只是用来跑通，是拿来用的！
不支持指定 parallel nn=1 使用 CPU/GPU 混合训练
不支持训练过程中，输出训练样本集上的参数统计信息，例如，参数绝对值的最大值最小值，梯度最大值最小值，本地输出学习率
v2 API 不支持使用 Timer 进行 profiling.

v2 API 跑PaddleBook机器翻译，多线程会挂，怀疑v2的多线程不够健壮

llxxxll added Good Question need be discussed labels

typhoonzero mentioned this issue

Able to print gradients in event_handler #3085

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wangkuiyi mentioned this issue

Make V2 API's event handler able to print more information #3211

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typhoonzero mentioned this issue

paddle任务在gpu集群上多卡执行，报an illegal memory access was encountered #3089

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Superjomn closed this as completed

heavengate pushed a commit to heavengate/Paddle that referenced this issue


          [doc] fix_ssld_link (PaddlePaddle#3040)

77456de

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