Error starting parallel pool
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Hi I am getting following error when I start parallel pool. Any insight would be appreciated.
Starting parallel pool (parpool) using the 'local' profile ... Warning: Unable to calculate the dependencies of the files: C:\Program Files\MATLAB\R2017a\toolbox\distcomp\@distcomp\nop.m
because: Unexpected Standard exception from MEX file. What() is:fl:filesystem:AccessDenied
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Walter Roberson
2017-6-5
You appear to have a corrupt installation, at least in the matter of the security permissions on various files or directories. I would recommend uninstalling the Parallel Computing Toolbox and reinstalling it.
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Lionel Trebuchon
2020-11-2
It is painful to have this warning and to always come back to this very thread. It seems like the warning is a "symptom" of slow startup. I can only write down the different tests that have been made. The workers appea in admin center, and all I am trying to do is the following:
cluster = parcluster('IRAMP_MDCS_TRAIN');
p = parpool(cluster, 1)
On worker server client node:
- command prompt: mdce stop -> mdce uninstall -> mdce install -> mdce start
- command prompt (as Administrator): mdce stop -> mdce uninstall -> mdce install -> mdce start
On head node:
- Make more workers (on worker server client) available than needed.
- Make workers available on head node instead of worker server client.
The toolboxes available on the head node are many, on the worker server client node, apart from the basics: database + datafeed, distcomp, stats
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Raymond Norris
2020-11-2
Just want to make one observation. The OP is using the local scheduler ("using the 'local' profile") . Lionel's comments are in regards to the MJS scheduler (admin center, mdce, etc.).
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