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Wouter
2

Global variables and multiple licenses of Matlab

Asked by Wouter
on 28 Feb 2013
Hello everyone,
At the moment I'm running multiple Matlab licenses on the same computer. My analyses utilize the same function m-file which uses global variables.
Can anyone tell me if these different instances of Matlab are able to access and use the single function file, without interfering with one anothers calculations?
Thanks in advance!

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3 Answers

Answer by Daniel Shub
on 28 Feb 2013
 Accepted Answer

Each instance of MATLAB is completely independent. Things like global variables are local to the instance of MATLAB that created the variables. If you are accessing hardware like a disk or serial port you can run into problems. Potentially doing things on a GPU could be problematic. In general you shouldn't have any problems.

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Answer by Jan
on 28 Feb 2013
Edited by Jan
on 28 Feb 2013

In fact, the other way around is complicated: Sharing variables between Matlab sessions requires very smart strategies, see FEX: sharedMatrix.
But beside the warning, that global variables are a bad programming style, you can run into troubles, when you store them temporarily on the disk due to collisions.

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Answer by Wouter
on 28 Feb 2013

Good to know, thank you both!

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