matlab just quitting mid-function

Hi All,

I am having a problem where matlab is quitting unexpectedly mid-function.

The function processes 32-channel audio data. The audio is 12 seconds long (I have tried this with a shorter 5s sample too) and it gets through about 1.1 seconds worth before the program just quits.

It doesn't give any error message, or open a dialog box or anything, it just quits. There is also no crash dump.

I am running matlab 2020a on mac catalina.

I read somewhere that it might be a java problem?? But I have just installed java and it's the same.

Any help much appreciated! Many thanks in advance!

[Ameer Hamza]

Can you show the code? Any idea which function might be causing this issue?

[Becky V]

I can't really show the code sorry. It's fairly computation-heavy, with matrix inversions etc. It worked fine before (with 4-channel audio), so the only different thing is that it now has 32-channels.

So covariance matrices etc are now 32^2 x no. timeframes x no. frequency bins rather than 4^2 x no. timeframes x no. frequency bins.

Is it possibly a memory problem? I tried to run the code with about 3 minutes of audio before and it gave an error straight away saying the maximum matrix size had been exceeded.

[Steven Lord]

Without the code it's going to be difficult to determine the cause of MATLAB exiting.

Are you perhaps calling a MEX-file in your computation process? If so that would probably be the first place I'd investigate, to determine if it's trying to access memory if it shouldn't ("walking off the end of the array" for example.)