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如何做到多线程加速这么明显？很多平台，2个线程会略微好一些，更多效果反而不好。 #30

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helloearth012 opened this issue Jun 19, 2019 · 1 comment
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如何做到多线程加速这么明显？很多平台，2个线程会略微好一些，更多效果反而不好。 #30

helloearth012 opened this issue Jun 19, 2019 · 1 comment

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@helloearth012
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很多平台，2个线程会略微好一些，更多线程反而引入一些cpu对线程管理的问题，最后反而速度更慢。（使用openmp）
但是看您的数据，多线程下，加速非常明显，请问是如何实现的？
@moli232777144
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看ncnn的wiki，理论上，线程越多会越快，但速度稳定性会下降

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@moli232777144 @helloearth012