Parfor cannot serialize data which is too large

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James 2013-11-6

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https://ww2.mathworks.cn/matlabcentral/answers/105093-parfor-cannot-serialize-data-which-is-too-large

评论： James 2013-11-7

I have a parfor loop which calculates eigenvectors as a function of frequency, and stores all of them for post-processing. The size of the eigenvectors is 924*200 (Temp_zvAi for instance), and the size of zuxAi is 924*200*1311. The eigenvectors are complex, and zuxAi is around 3.8GB. Parfor returns the serialization error. How to get around this please? The code looks like below:

parfor fcount=1:Numsam
          [Amat,Bmat]=functionof(fcount);
          [Temp_zkA,Temp_zvAi]=eigenSolver (jn1,Amat,Bmat);
          Temp_zuxAi=Temp_zvAi(1:nA,1:jn1);
          zuxAi(:,:,fcount)=Temp_zuxAi;
          Temp_zuyAi=Temp_zvAi(nA+1:2*nA,1:jn1);
          zuyAi(:,:,fcount)=Temp_zuyAi;
          Temp_zuzAi=Temp_zvAi(2*nA+1:3*nA,1:jn1);
          zuzAi(:,:,fcount)=Temp_zuzAi;
end

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Matt J 2013-11-6

编辑：Matt J 2013-11-6

Your code looks like an in complete example. In particular, none of the Temp_ quantities show any dependence on fcount. For all we can see, they can be pre-computed before the loop and all zu_xyz_Ai(:,:,fcount) will be copies of each other.

James 2013-11-6

编辑：James 2013-11-6

Matt, thanks for your answer. The code only shows the places where errors are caught. Temp_ quantities depend on fcount, as Amat and Bmat are matrices dependant on fcount. The frequency dependence is irrelevant to the current problem so I deleted them.

I added one line to the code to clarify this.

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