Out of Memory Error: How can one get around this?
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Hi,
So I ran my code and in one of the lines it said I had no memory left. The actions on the line consisted of multiplying two matrices, one is 65000+ x 3 in dimension and the other is the transpose of the first. I would assume this data is too large to compute. Is there any possible way of getting around this?
I was thinking about using functions such as fopen, fread, textscan after looking in the documentation. Would this solve my problem? Any help would be greatly appreciated.
Thanks, Ian
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Accepted Answer
Oleg Komarov
on 30 May 2011
beta = X\y
From the reference below an example (fit y = b_1 + b_2*t + b_3*t^2 + b_4*t^3):
t = [1900;1910; 1900; 1930; 1940; 1950; 1960; 1970; 1980; 1990];
y = [75.9;91.9;105.7;123.2;131.6;150.6;179.3;203.2;226.5;249.6];
% Build X
X = bsxfun(@power,t,0:3);
b = X\y;
10 Comments
Oleg Komarov
on 3 Jun 2011
I remember you posted smt but then deleted, it could be from what i remember
More Answers (4)
Walter Roberson
on 30 May 2011
Is that multiplication
(3 x 65000) * (65000 x 3)
thus returning a 3 x 3 final matrix?
Or is it
(65000 x 3) * (3 * 65000)
thus returning a 65000 x 65000 final matrix?
If you are expecting a 65000 x 65000 output, then where did you intend to store that array? If the elements were double precision, that would be a 31 1/2 GB matrix.
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