Parpool and matlabpool stuck (busy), but local cluster profile validates

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Jeffrey Chiou 2014-4-11

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https://ww2.mathworks.cn/matlabcentral/answers/125437-parpool-and-matlabpool-stuck-busy-but-local-cluster-profile-validates

评论： Stephen Lee 2016-2-1

When I try to use the commands matlabpool open or parpool, it remains stuck at 'busy'. However, when I go to the cluster profile manager and click validate, all the tests successfully validate.

I am using Matlab 2014a. I also have 2013a installed, and matlabpool does not work properly there either.

How do I get parpool working?

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Answer 1

Jeffrey Chiou 2014-4-11

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https://ww2.mathworks.cn/matlabcentral/answers/125437-parpool-and-matlabpool-stuck-busy-but-local-cluster-profile-validates#answer_133077

Solved it.

If the startup.m function has an 'input' command, parpool will not start. The 'keyboard' command in startup.m will prevent parpool from starting too. I haven't tested other commands, but I suspect functions that require user input will cause this bug as well.

Simple variable assignments in startup.m will not affect parpool. It's a shame because I would like to keep my startup.m the same and use the parallel toolbox.