MATLAB: Does GPU coder have only one output

GPU Coderparallel computing

I'm changing a function into mex file with GPU coder, and I have a problem while I using the GPU coder.
I want to get two matrices; D, N as the output of fcn_DH.
When I executed GPU coder with a code below, Running test file with MEX is not terminated, thus I cannot make MEX file.
However, When I changed the first line of the function into 'D = fcn_PRM(node,PosMap)', which has only one output, the GPU coder worked fine.
I'm wondering if I can apply the GPU coder to a function and only get one variable as a result.
Otherwise, if GPU coder can multiple outputs, I want to know which part of my code is wrong.
function [D,N] = fcn_PRM(node,PosMap)
n = length(node);
D = coder.nullcopy(zeros(n,n,2));
N = coder.nullcopy(zeros(n,n));
len=(1:n)';
pos_mat=PosMap(node(len),:);
coder.gpu.kernel;
for i=1:n-1
    for j=i+1:n
        dist=sqrt((pos_mat(i,1)-pos_mat(j,1))^2+(pos_mat(i,2)-pos_mat(j,2))^2+(pos_mat(i,3)-pos_mat(j,3))^2);
        B = collisionCheck_SP5(PosMap(node(i),:), PosMap(node(j),:));
        D(i,j,1) = dist;
        N(i,j) = B;
        
    end
end

Best Answer

Hello Lim,
After analyzing the code, It is clear that you are not able to generate ‘MEX’ because the ‘%#codegen’ directive is missing in the function definition at beginning. To generate the ‘MEX’ please add the ‘%#codegen’ directive as shown below at the starting of the Entry-Point function:
function [D,N] = fcn_PRM(node_PRM,PosMap) %#codegen 
%…

%…
end
Also, make sure that the same function is getting called in the ‘Define Input Type’ stage.
Kind Regards
~Pravin
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