Matalb "out of memory" problem

If you are working and coding with Matlab, you probably encounter this problem especially when your code has many iterations or you are dealing with libraries you want to use inside of your code.

Here are some suggestions:

1) The interface of Matlab written in Java so one option could be increasing the heap size of "Java Heap Memory" (File->Preferences->Java Heap Memory).

2) Try "-nodesktop" mode. You need to go to cmd and run Matlab in the directory you want to run your program. Also in your command line type: -nodesktop. You will have just a window (like cmd) to type the code you want to run.

3) If the problem you are encountering is related to the library you are calling or using in your Matlab code, the other option could be using the MEX file. You need to create a MEX file in Matlab using that library. After compiling and creating the MEX file , you can use it like other build-in functions in Matlab. Creating the MEX file sometimes is tricky a little bit but I think its completely worth it to have your own costume function instead of loading the library each time.

4) Use machines with bigger RAMs. Many universities have HPC (High Performance Computing) lab.  The amount of RAM you can get over there is usually huge. In our university I tried to see how much RAM I can get by creating a vary big matrix (5e4*5e4), and I could get almost 21 GB RAM.



I would be happy if you let me know about other methods to deal with this problem.