MATLAB suddenly closes when running a complex script

I made a large script in MATLAB 2019b on my computer. When I try to run it at my institutes computer (2017b) it crashes after a couple of minutes

How can I over come this?

[Walter Roberson]

I would suggest that you start with turning the diary on, so that you can get an idea of how far it executed before it crashes.

[Jan]

Please explain, what "crashs" means: Do you get an error message? If so, which one? Is the memory exhausted before?

[Joel Schelander]

MATLAB make the sound that theres an error and immediately closes. So I cannot see the error message

Answer 1

[Jan]

Without seeing the code it is impossible to suggest a solution. There is no magic "do not crash"-flag, which can be enabled by professionals only.

You have to debug the code. Set some breakpoints to step through the code line by line. If this is too lengthy, try to enable the diary and display all performed commands:

echo(fullfile(tempdir, 'myEcho.txt'));
diary(fullfile(tempdir, 'myDiary.txt'));
% now run the code again

After Matlab has crashed again, check the event log of the operating system also for a new entry.

If you have found out, where the code crashs, insert some code to stop the execution exactly before the crash, e.g.:

if k==17 && b==47196
   keyboard;   % -> Breakpoint here
end

Then save the variables provided as input for the next step in a MAT file, such that you can examine the reason without the need for the former processing. The next command together with the input data are a useful start point to explain the details here in the forum.