Is there a way to provide a variable to a worker of a parpool?

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Bobby Brown 2016-6-28

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回答： Sean de Wolski 2016-6-28

Hi,

Is there a way to provide a variable, or a set of variables to a particular worker and/or all workers of a parpool from the parent script that's generated the parpool?

What i'm looking for is something like this

*Some processing to calculate a number of variables.
ParallelPool  = parpool(16);
*Pass the variables and their values just created to a particular worker and/or all workers
pctRunOnAll ParallelScript

Thanks

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Brendan Hamm 2016-6-28

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It sounds like what you want to do is use a Composite array.

% Create Random Data
A = rand(1);
B = rand(2);
% Open pool
parpool('local',2) % gcp('nocreate') % <-second option if you have pool open
% Create a Composite variable and assign its elements.
C = Composite(2);
C{1} = A;
C{2} = B;
spmd
    disp(C) % display results
end