starting matlab pool hangs in 2018b

Hi,

when I try to start a local pool either by clicking on 'Start parallel pool' or calling 'parpool' or during a call to 'parfor' (automatic start enabled), matlab starts to intitialize it but it does that for hours if I do not abort the process.

There is no error message, however, significant cpu resource consumption.

I went through similar issues posted in the forum and tried

distcomp.feature( 'LocalUseMpiexec', false )

However, this did not solve the issue.

The matlab version is running under windows 10 with administrative rights on a Lenovo notebook T470.

Please help!

Thanks, Norman

[Edric Ellis]

I suggest contacting MathWorks support to help resolve this. (One quick thing you might check is that you don't have a startup.m file that might be interfering).

Answer 1

[Norman Forschack]

Thanks Edric for your comment, which let me move forward to the solution :)

At first, I couldn't see how the startup.m file might interfere as I never had issues with startup.m files in the past years.

However, in this specific case, I used a startup.m file that prompts a user input. This would indeed create a problem if starting a parallel pool also starts the startup.m file again.

This is probably the case because commenting the "input" line solved the issue.

So I learned something new. Thanks a lot for your hint Edric!