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Is there a way to speed up gpuarray loop?
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Mantas Vaitonis
am 18 Jun. 2018
Geschlossen: Mantas Vaitonis
am 5 Jul. 2018
Dear All,
I am stuck in the folowing function. I would like to speed up this calculation for GPU, unfortunately now it is very slow.
clear;
p1=[1 2 2 5 4];
idx2=[1 3 4]
idx1=gpuArray(idx2);
p=gpuArray(p1);
tic
for k1=1:1000
cc=p(p);
for i=1:5
k=any(p(i)==idx1);
k1=any(cc(i)==idx1);
k3=idx1(cc(i)==idx1);
%[idxx]=arrayfun(@testas,k,k1,k3,bb(i));
idx1(cc(i)==idx1)=i;
end
end
toc
cc=p(p) is inside the loop, because in my algorithm it would change during every iteration.
2 Kommentare
KSSV
am 18 Jun. 2018
You need to check whether using gpu array is necessary? Computations on GPU will be faster if your data is huge. For less data, GPU simulations tend to be slower than CPU. First check the same with CPU and compare times with GPU.
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