parfor cannot run due to the way the variable 'Adj_Load_Mat' is used

Hello,

I am trying to run the following parfor loop, but I keep getting an error. The error message says "parfor cannot run due to the way the variable 'Adj_Load_Mat' is used." Any workaround is highly appreciated.

    Adj_Load_Mat=zeros(tne,ndof);
    parfor iel=1:tne
            dof=dof2(iel,:);
            Adj_Load_Mat(iel,dof)=(Ad_Load_e(iel,:))';
    end
    Adj_Load=sum(Adj_Load_Mat,1);

The arrays 'Ad_Load_e' and 'dof2' are calculated at previous steps.

Thanks in advance

Answer 1

[Walter Roberson]

Try

Adj_Load_Mat=zeros(tne,ndof);
    parfor iel=1:tne
            dof=dof2(iel,:);
            local_Adj = Adj_Load_Mat(iel, :);
            %it has to end up as column the transpose portion of ' must be
            %irrelevant so you must have used ' to indicate conjugate
            local_Adj(dof) = conj(Ad_Load_e(iel, :));
            Adj_Load_Mat(iel,:) = local_Adj;
    end
    Adj_Load=sum(Adj_Load_Mat,1);

[Diab Abueidda]

Thanks, Walter! It worked.

[Diab Abueidda]

Hi Walter,

I am encountering a bit different scenario, but the error is the same as the old one

Thanks in advance

parfor iel=1:tne
            start=(iel-1)*576+1;
            end1=576*iel;
            data(start:end1)=data2(iel,:);
end