Why doesn't MATLAB support 'cpuArray' for some array creation functions?
조회 수: 1 (최근 30일)
이전 댓글 표시
For example, we can create a GPU array by code:
rand(3, 'single', 'gpuArray')
Unfortunately, this code will fail if it is run on a PC without a CUDA graphics card. If we can pass 'cpuArray' to rand, we can easily write a MATLAB program for both CPU and GPU computings. E.g.,
useGpu = 0
if(useGpu)
arrayType = 'gpuArray';
else
arrayType = 'cpuArray';
end
% The program ...
A = rand(3, 'single', arrayType);
B = rand(3, 'single', arrayType);
C = A*B;
(Unfortunately, this example doesn't work for current MATLAB...)
Otherwise, we have to write this code:
useGpu = 0
if(useGpu)
A = rand(3, 'single', 'gpuArray');
B = rand(3, 'single', 'gpuArray');
else
A = rand(3, 'single');
B = rand(3, 'single');
end
C = A*B;
Could MathWorks add 'cpuArray' to most array creation functions in the future?
댓글 수: 0
채택된 답변
Edric Ellis
2018년 1월 17일
Another workaround is to use a cell array.
if useGpu
arg = {'gpuArray'};
else
arg = {};
end
A = rand(3, 'single', arg{:});
추가 답변 (1개)
참고 항목
카테고리
Help Center 및 File Exchange에서 GPU Computing에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!