currentProject() function in Parallel Computing Toolbox

Question

Isaac De La Cruz 2023-2-14

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1912355-currentproject-function-in-parallel-computing-toolbox

评论： Isaac De La Cruz 2023-2-15

I have a workflow that uses the MATLAB project functions to retrieve information from the MATLAB project. I use currentProject() to get the matlab.project.Project object.

I am trying to run this workflow using the Parallel Computing Toolbox, but seems that the MATLAB project is not available in the MATLAB workers.

Tested it using this code:

parpool(2);
Starting parallel pool (parpool) using the 'Processes' profile ...
Connected to the parallel pool (number of workers: 2).
spmd
    currentProject();
end
Error detected on workers 1 2.

Caused by:
    Error using currentProject
    No project is currently loaded.

Does the MATLAB project gets transferred into the MATLAB workers, or only the MATLAB path?

Any workaround about how can I pull the Project Reference information in a distributed environment?

Thanks in advance!

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Answer 1

Sean de Wolski 2023-2-14

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https://ww2.mathworks.cn/matlabcentral/answers/1912355-currentproject-function-in-parallel-computing-toolbox#answer_1171330

在 MATLAB Online 中打开

You can open the project on all workers before the loop with parfevalOnAll.

gcp
rf = currentProject().RootFolder
parfevalOnAll(@()openProject(rf), 0)
parfor ii = 1:4
    disp(currentProject().RootFolder)
end

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Isaac De La Cruz 2023-2-15

Thanks @Sean de Wolski! This solution works.

Unfortunately for me, the MATLAB projects has a lot of overhead during startup, so I decided to take another approach of storing the information from the MATLAB project before distribution.

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