how can I write a parallel code in Matlab?
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sasa
le 1 Août 2014
Réponse apportée : Edric Ellis
le 4 Août 2014
hi every one, can you help me to write a program with parfor and compare the time consumed in comparing with for? The code is: matlabpool open local 7 tic parfor i = 1:100000 k=i end toc matlabpool close Elapsed time is 1.846197 seconds.
tic,for i = 1:100000 k=i end toc Elapsed time is 0.000640 seconds.
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Dima Lisin
le 1 Août 2014
The reason you are seeing this result is because your loop does not do anything. If you make each iteration of your loop do substantial work, you will see a speedup.
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Edric Ellis
le 4 Août 2014
Ideally, you should not open and close the pool for timing purposes - it's intended that you keep the pool open.
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