currentProject() function in Parallel Computing Toolbox

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!

Answer 1

[Sean de Wolski]

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

[Isaac De La Cruz]

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.

[Simon]

I was having a similar issue with a test suite (and runInParallel) That solution works thank you @Sean de Wolski

In the future will this be changed so that the open projects are instantiated on the workers without user input? Or is this the intended behavior?