How can i save the temporary variable inside the parfor loop for the below code ? i have also tried using SPMD but it takes more time that the normal problem running in one core takes and how will i be able to find the thread number of each worker ?

Question

Naveen kumar Elumalai 2018-2-7

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https://ww2.mathworks.cn/matlabcentral/answers/381383-how-can-i-save-the-temporary-variable-inside-the-parfor-loop-for-the-below-code-i-have-also-tried

回答： Namnendra 2022-6-19

i wanted to save the temp variable 'temp' and i cant find any way to do it..i would appreciate any help thank you

C is 300x52 matrix,D is 6x300 matrix, k is a 6x300 matrix,N is 50 and offs is 3,

 parfor n=1:6
      temp=[];
      A=zeros(300,(N+offs) +N); 
      for m=1:N+offs 
        A(1:300,m)=k.*C(1:300,m);
      end
      inda=N+offs;
      for m=1:N 
        A(1:300,inda+m)=-k.*C(1:300,m).*D(n,1:300).';    
      end  
      temp=A\B;
end %for n=1:Nc

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Answer 1

Namnendra 2022-6-19

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https://ww2.mathworks.cn/matlabcentral/answers/381383-how-can-i-save-the-temporary-variable-inside-the-parfor-loop-for-the-below-code-i-have-also-tried#answer_988680

As seen in the code, you have 6 instances of temp to be saved. You can create a structure which is outside the parfor loop and assign its size to be n(=6). So you can assign that particular temp at the corresponding index of n in the structure. You can later retrieve the value of temp from the structure.

I hope it helps.