sharing matrix in parfor

I have a program which uses the parfor loop and contains a large matrix (2-3GB). Each worker continuously access random locations in the matrix, but never write to the matrix. When using parfor the matrix is copied for each worker causing a massive memory spike. Is there a way to prevent this and allow each worker to read from the same matrix?

Answer 1

[Sarah Wait Zaranek]

There is no way to do shared memory automatically in a parfor loop. However, depending on where the data is located - there may be options. For instance, if the data is coming from a file - memory mapping may work well. Look at the function memmapfile.