From multi-core CPU to GPU

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Alexandre
Alexandre 2014-7-14
编辑： Matt J 2014-7-17
Hi everyone,
I have a code that currently runs on a CPU which has 4 physical cores. This is done by using somewhere in my code a parfor loop.
I wanted to see if i could take any advantage of my GPU by running the code on my 576 Cuda cores instead of my 4 CPU cores. I created/sent all the variables inside the GPU and run the exact same code. However :
- when it comes to the parfor loop, Matlab says :
"Error using parfor_range_check (line 17)
The range of a parfor statement must be numeric. See Parallel Computing Toolbox, "parfor"."
Here is my parfor initialization :
"n_row_max=gpuArray.colon(1,1,576);
parfor row_Rubber=n_row_max"
- if i use a mere "for", it works perfectly but sloooowly, so i assume only 1 cuda core is running ?
I would like to do exactly like the parfor, but on the GPU : have 576 workers (instead of 4) doing the job.
Thanks in advance for any help,
Alex

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Matt J
Matt J 2014-7-14
编辑：Matt J 2014-7-17
PARFOR is meant for parallelizing tasks on CPU cores, not on the GPU. You cannot use GPU cores to parallelize complex MCode for-loops. They aren't the appropriate hardware for that.

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