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[Pool] About using ray.util.multiprocessing import Pool #7542

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zewenli98 opened this issue Mar 10, 2020 · 1 comment
Open

[Pool] About using ray.util.multiprocessing import Pool #7542

zewenli98 opened this issue Mar 10, 2020 · 1 comment
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P3 Issue moderate in impact or severity question Just a question :)

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@zewenli98
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When I run the example of doc for the second time, why these problems below come up? (the first time is ok!)
image

Besides, I wonder if I just need to replace from multiprocessing import Pool with from ray.util.multiprocessing import Pool, and the other codes don't have to change? Thanks in advance!
@zewenli98 zewenli98 added the question Just a question :) label Mar 10, 2020
@zewenli98
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When I use from multiprocessing import Pool to create an instance of Pool and use pool.apply_async(), then feed it with an instance of multiprocessing.Manager().Queue(), I can get good results. But when I change to from ray.util.multiprocessing import Pool, and the other codes don't change, I cannot get good results? Who can help me? Thx!
image

@ericl ericl added the P3 Issue moderate in impact or severity label Mar 19, 2020
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@ericl @zewenli98