CODEWITHSUNDEEP
matlabmemory
Supa
Supa

Reputation: 145

Matlab "Out of Memory" Solutions?

fname = dir('*sir');
[tmp, head] = loadsir(fname(1).name);
dayH = zeros(length(fname),size(tmp,1),size(tmp,2));

% use temporary array to simplify 3d array creation
for i=1:1
  tmp = loadsir(fname(i).name);
  dayH(i,:,:) = tmp;
end

I have this code above but all I get is: 

Error using zeros
Out of memory
Error in dataAnalysis (line 4)
dayH = zeros(length(fname),size(tmp,1),size(tmp,2));

Upvotes: 2

Views: 1608

Answers (1)

slayton
slayton

Reputation: 20319

Arrays in Matlab are stored in consecutive chunks of memory. You are probably running out of memory because your computer doesn't have a continuous block of memory large enough to store the entire matrix.

You need to:

  1. reduce the size of the matrix, or
  2. Use a variable type that allows memory to be saved in discontinuous chunks.

If you don't plan on populating the entire matrix then try reducing its size using a sparse matrix as suggested by @Dennis Jaheruddin

If you plan on filling the matrix then consider splitting it into cells.

zeroMat = zeros( size(tmp,1), size(tmp,2) );
daysH = repmat( {zeroMat}, [length(fname), 1] );

Each individual cell will still require enough memory for a matrix of size size(tmp,1) x size(tmp2). Unless these numbers are huge you should probably be fine.

Upvotes: 2

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