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你好,请问人脸识别这个网络,为什么并行版本比串行的耗时还要多呢 #1

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bubblechn opened this issue Apr 9, 2018 · 1 comment

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@bubblechn
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在同样迭代100次的情况下, 串行版本是100多秒, 而并行版本却是300多秒, 希望您能指教一下,我刚开始入门,源码还看不太懂

@huihut
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huihut commented May 17, 2018

非常抱歉给您带来困扰了,确实可能会那样,我们算法写砸了。我们的并行算法思路原本是按照这篇论文写的:基于数据并行的BP神经网络训练算法,但权值交换那里无法实现论文效果。因此我们改用所有进程一起训练,然后广播最佳网络。后来写砸,删库跑路了。

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