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When I use parfor in the program, the program seems to fall into an endless loop in the remoteparfor.m file, resulting in the program's delay in output.What's going on?

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jessie sun 2022-3-20

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评论： Walter Roberson 2022-3-21

When I use parfor in the program, the program seems to fall into an endless loop in the remoteparfor.m file, resulting in the program's delay in output.What's going on?

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Edric Ellis 2022-3-21

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The file "remoteparfor.m" is part of the implementation of a parfor loop. The main job of this piece of code is to wait for results to arrive from the workers - it's not doing any work itself. So while it may appear to be sitting in an infinite loop, it really is just waiting for whatever the workers are doing, and will complete as soon as they have completed.

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jessie sun 2022-3-21

How to prevent long waiting？

Walter Roberson 2022-3-21

Write code that does less work.

See also https://www.mathworks.com/matlabcentral/fileexchange/71436-parfor-progress-monitor-progress-bar-v4

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Parallel Computing Parallel Computing Toolbox Parallel for-Loops (parfor)

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