Accelerating MATLAB Performance

350 Accelerating MATLAB

®

Performance

gatherTimes = inf(size(sizes));

gpu = gpuDevice; % get the current GPU device

for ii = 1 : numel(sizes)

data = randi([0 255], sizes(ii), 1, 'uint8');

for rr = 1 : repeats

timer = tic();

gdata = gpuArray(data);

wait(gpu); % wait until memory operations are finished

sendTimes(ii) = min(sendTimes(ii), toc(timer));

timer = tic();

data2 = gather(gdata);

gatherTimes(ii) = min(gatherTimes(ii), toc(timer));

end

end

sendBandwidth = (sizes./sendTimes)/2^30;

[maxSendBandwidth,maxSendIdx] = max(sendBandwidth);

fprintf('Peak send speed is%g GB/s\n', maxSendBandwidth)

gatherBandwidth = (sizes./gatherTimes)/2^30; ...