sharing matrix in parfor
1 view (last 30 days)
Show older comments
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?
0 Comments
Answers (1)
Sarah Wait Zaranek
on 14 Sep 2012
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.
0 Comments
See Also
Categories
Find more on Parallel for-Loops (parfor) in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!