Info

此问题已关闭。 请重新打开它进行编辑或回答。

What is the difference when multiplying and dividing 3D gpuArrays compared to 2D?

1 次查看（过去 30 天）
Mantas Vaitonis
Mantas Vaitonis 2018-7-13
关闭： Mantas Vaitonis 2018-7-13
Hello,
I am trying to do some calculations on 3D gpuArrays. Firstly I made my code for 2D arrays, the I did try tomove to 3D. I noticed that results are different, what I am doing wrong and what is the difference when performing multiplication and division between 2D and 3D arrays? As example there is 3D array A(100x5x1):
x=A
y=A
b = inv(x'*x)*x'*y;
C=x\y;
result c is (5x5) array and b(5x5). And if I convert 3D A to gpuArray and perform the following calculations when A (100x5x10);
b1=pagefun(@mtimes,permute(x, [2 1 3]),x);
bb=pagefun(@inv,b1);
b2=permute(x, [2 1 3]);
b3= pagefun(@mtimes,bb,b2);
b=pagefun(@mtimes,b3,y);
result is b(5x5x10),
c=bsxfun(@mldivide,x,y);
Here result is c (100x5x10).Why it is different from 2D array division? What would be the correct way performing same calculations on 3D gpuArrays?

此问题已关闭。

回答（0 个）

此问题已关闭。

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by