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codistributed array, parallel computing

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Franz-Josef
Franz-Josef le 8 Août 2011
Clôturé : MATLAB Answer Bot le 20 Août 2021
Hello!
I have to compute a large matrix of data. For example: for i=1:3E5 A(:,i) = ... end Do to this I use the parallel computing toolbox. The amount of memory is in my opinion very large, because the array A is copied to every worker. If I define A as a codistributed array, the for loop becames very slow (I use for drange). Are there any suggestions to speed up this computation? Thx!
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Walter Roberson
Walter Roberson le 8 Août 2011
Just to check: you _are_ preallocating A, right?

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Jill Reese
Jill Reese le 8 Août 2011
Could you post the code that you are currently using? It would be easier to make suggestions based on what you have already tried.
Thanks,
Jill

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