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

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

[Brendan Hamm]

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

As you can see when I refer to C I get a different answer from each worker.

Answer 1

[Sean de Wolski]

You want a parallel.pool.Constant. https://www.mathworks.com/help/distcomp/parallel.pool.constant.html