How can I profile the memory usage in MATLAB when I use Linux and Mac OS?

How can I profile the memory usage in MATLAB when I use Linux and Mac OS?

the memory function is only available to Windows, right?

Answer 1

[Zander Labuschagne]

Hello,

I know it's a bit late, but I just used the following on Linux:

    [tmp pid] = system('pgrep MATLAB');
    [tmp mem_usage] = system(['cat /proc/' strtrim(pid) '/status | grep VmSize']);
    fprintf("%i MB\n", round(str2num(strtrim(extractAfter(extractBefore(mem_usage, ' kB'), ':'))) / 1000));

The system command executes a shell command where I first get the process ID and used the ID to get the memory usage using cat to read the process status file, then I format it and output it in MB. You can probably retrieve the PID inside the same bash command then you call the system function only once.

[Nikolai Kozlov]

Hello,

You can shorten it to the following two lines:

[tmp mem_usage] = system(['cat /proc/$(pgrep MATLAB)/status | grep VmSize']);

fprintf("%i MB\n", round(str2num(strtrim(extractAfter(extractBefore(mem_usage, ' kB'), ':'))) / 1000));

This seems strange to me, but after clearing the variables (for instance, clear all) the VmSize does not reduce and may even encrease. Why so?

[Runcong Kuang]

Hi, is this code a bash command?

I create the .sh file with these lines of code and run it in the terminal while I am running matlab in the linux.

But this gives me the syntax error "near unexpected token '('

[Runcong Kuang]

I make it into a .m file and run 'matlab -batch [thisfile] while I am running main matlab file.

I also try adding these lines in my main running matlab file.

Both of these methods only return " MB".

Answer 2

[Carlos Rondon]

I'm using a MAC with Catalina OS. Normally I use this command:

profile -memory on

you can view the results after your code executes using

profview