sharing matrix in parfor

Eugene

2012 6 30

1 个回答

6 次查看（30 天）

0 个投票

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 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Follow Question

回答（1 个）

Sarah Wait Zaranek 2012-9-14

1 个投票

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.