Pass out of memory

I want to calculate the solutions of some huge linear system of equations by backslash function and save the norm of solutions in a excel file, and I don't want Matlab stopped when for some cases it has "Out of Memory". Please let me know how can I solve this problem

Answer 1

[Walter Roberson]

You could add more ram.

In some cases you might be able to use sparse matrices.

In some cases you might be able to use tall() arrays.

[Ali Shahmoradi]

But I want to write 'out of memory' in my excel file and pass this iteration

[Christine Tobler]

You can wrap the call to backslash in a try/catch statement, and then in the "catch" say what you want to do if an error was thrown.

For example:

for ii=1:10
    try
        x{ii} = A{ii} \ b{ii};
    catch ME
        x{ii} = "Error occured";
    end
end

If there is an out-of-memory error, x{ii} is just filled with that string instead of the solution of linear system, but the computation will continue.

[Walter Roberson]

Huh, I did not think it was possible to catch out-of-memory, but testing I see that it is in at least some cases.

[Ali Shahmoradi]

Thanks, It worked