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concat_op is extremely slow in GPU #6988

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reyoung opened this issue Dec 25, 2017 · 1 comment
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concat_op is extremely slow in GPU #6988

reyoung opened this issue Dec 25, 2017 · 1 comment
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@Yancey1989
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performance tuning
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Release 0.11.1

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reyoung commented Dec 25, 2017

concat_op invoke cudaMemcpyAsync many times. Even though cudaMemcpyAsync is async, the kernel launch time is huge.
@reyoung reyoung added this to the Release 0.11.1 milestone Dec 25, 2017
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Releated issue #8119

@Yancey1989 Yancey1989 mentioned this issue Feb 8, 2018
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