use the parfor loop and the distributed array together

Hi,

I would like to use the parfor loop and the distributed array together.

I run this code

matlabpool open tic; n=200; parfor i = 1:n M = magic(n); R = rand(n, codistributor()); A(i) = sum(M(i,:).*R(n+1-i,:)); end toc matlabpool close

but i obtained an error:

??? Error using ==> parallel_function at 598 Distributed SUBASGN does not yet support expansion with linear indexing.

Error in ==> test20 at 9 parfor i = 1:n

any help please and thank you in advance

Answer 1

[Sarah Wait Zaranek]

Hello.

You can not use distributed arrays and parfor together. If you only want to use part of the distributed array in each iteration - then drange may be able to help you out.

Help documentation on drange: web([docroot '/toolbox/distcomp/bqkoovb.html#bqxwxiv'])

Depending on what you may want to do - you could also just use the local part.

I may be able to provide more information if I knew what you were wanting to do.

Good Luck.

Cheers, Sarah