gpu初测

tic;
N = 100000;
A = gpuArray(rand(2^16,1));
for i=1:N
    B = fft(A);
    A = B;
end
toc;

tic;
mA = rand(2^16,1);
for i=1:N
    mB = fft(mA);
    mA = mB;
end
toc;

时间大概就是：