Matlab is running really slowly R2015b
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Kristoffer Lindvall
on 19 Nov 2015
Commented: Walter Roberson
on 27 Jan 2016
I just reinstalled matlab on my laptop to get the "latest and greatest", but now my code takes like 40 seconds to run, instead of 2sec. The symbolic toolbox that is in use seems to be the MuPad. I have no idea what is going on, because it is the same code that I am running. I am using a lot of symbolic stuff, like jacobian and sub etc. But it used to take 2 sec so something else is going on. Has anyone else had the same problem?
1 Comment
Richa Gupta
on 25 Nov 2015
It is difficult to say what must be causing the slowness. I would suggest you to run a profiler on your code. You can try running the code using the 'Run and Time' option in MATLAB to see which portion of your code is causing MATLAB to be slow.
Accepted Answer
Michael Armstrong
on 27 Jan 2016
I've had exactly the same problem, code that took 40s to run takes 20mins.
Do you also have Maple installed? Once I got the Maple toolbox installed it was ~10X faster than the matlab symbolic toolbox. 300s->29s, for a script that simply does a double loop to substitute values into a symbolic matrix and make some calculations.
2 Comments
Walter Roberson
on 27 Jan 2016
I got my Maple toolbox installer from Maplesoft, the manufacturers of Maple. Maple is not available from Mathworks since 2008.
More Answers (1)
timo
on 25 Nov 2015
I think Mathworks didnt focues too much on performance improvement , as some product are painfully slow , like Matlab 3d Animation
1 Comment
Walter Roberson
on 25 Nov 2015
You are incorrect. Mathworks put a lot of effort in to analyzing and improving performance.
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