Re: parcellfun (or cellfun) overhead

[Francesco Potortì]

>anonyFunc = @(x) func(x, paramStruct);
>splB = parcellfun(nThreads, anonyFunc, dataCell);
>
>where "paramStruct" is a very large structure array (70000 elements), 
>and "dataCell" contains each one of the imput data.
>
>The function "func" takes takes around 50 ms, (measured with tic-toc), 
>but when calling it with parcellfun it takes much longer, around 500 ms.
>
>Same happens when replacing parcellfun with cellfun.
>
>I suspect that this is due to the large size of paramStruct, because 
>this does not happen when replacing "func" by a dummy function.
>
>Any ideas of how could improve the situation?

Have you considered using the ChunksPerProc option?  It is described in
parcellfun's help.

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