Load and Save using PARFOR Loops

Question

Anas Khan 2022-10-25

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1835008-load-and-save-using-parfor-loops

评论： Anas Khan 2022-10-25

I am using PARFOR loops on a cluster like so:

files = dir('*.mat'); % Get list of data files to load
subjectIDs = cell(1,length(files));
% Extract subject name from each filename (SUBJECTNAME.mat format for each file)
for file = 1:length(files)
    subidsplit = strsplit(files(file).name,'.');
    subjectIDs{file} = subidsplit{1};
end
clear file subidsplit
frex = 2.^([10:76]/10);
parpool(length(files),'AttachedFiles',"wilson_sf.m") % Initialize parpool, 
% one worker for each iteration, attach helper function
parfor ii = length(files)
    CheahaGGC(1000, frex, 0, 0, 6,files,ii,subjectIDs);
end

Inside the function CheahaGGC, I am loading one file, running analysis on it, and saving it. My script completed without errors in 7 hours, but only one of the iteration's results were saved (the last one, corresponding to ii = length(files)). Is there a problem with how I implemented the loop? Each worker gets its own workspace so calling LOAD inside my function should give each worker its own data to analyze right? Same thing with SAVE. Shown below is the load and save inside of the function

function CheahaGGC(fs, freq, pad0, flgCond, omega0,files,ii,subjectIDs)
load(files(ii).name) % Load one file for this iteration
%%%%%%%%%%%%%%%%%%%%%%%
%%%% Analysis Code %%%%
%%%%%%%%%%%%%%%%%%%%%%%
save(strcat(subjectIDs{ii},'GGC','.mat'),'causalityGO','causalityNG') % Save results to file with subject name + "GGC" added