out of memory because of large matrixs and vectors

I have written a code which generate large vectors and matrices.

for example a 1*100000000 dimension matrix must generated during the main code, but "out-of-memory" error occurred.

how can I fix it?

Thank you in advance

[James Tursa]

A double vector of that size is 763MB. How much memory do you have? What do you get when you type the following at the command line:

memory

[jafar]

Maximum possible array: 9936 MB (1.042e+10 bytes) *

Memory available for all arrays: 9936 MB (1.042e+10 bytes) *

Memory used by MATLAB: 1060 MB (1.111e+09 bytes)

Physical Memory (RAM): 7868 MB (8.250e+09 bytes)

• Limited by System Memory (physical + swap file) available.

Answer 1

[James Tursa]

Please show the code you are using to create these vectors and matrices. Are you sure you are not inadvertently attempting to create a large matrix instead of a vector? E.g.,

V = zeros(1,N);  % <-- creates a 1 x N vector
M = zeros(N); <-- creates a N x N matrix

[jafar]

its a simple view of my code:

C=reshape((B)'*A(2,:),[1,D]);

which B is 1x10477456 double

and A is a 3x4116 double

and D=4114*10477456

[James Tursa]

D is a 321 GB array. So no, you can't allocate that much memory ... hence the error. You will need to reformulate your problem and maybe try to work it in pieces.