Transparency violation error when using 'parfor'

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I am trying to take advantage of multiple processor with the following codes:
mfile_name = run_sims_func();
parfor i=1:length(mfile_name)
run(mfile_name{i});
end
I understand everything should be known or defined to Matlab to use 'parfor', but I don't know why the cell array of script names is considered undefined or unknown.
I have a function 'run_sims_func()' which creates a script in the same directory of 'run_sims_main.m' based on some other information. The cell array of the script names is returned to the main function as shown below:
mfile_name = run_sims_func();
For example,
mfile_name = {'eric.m';'hong.m'};
Then, I want to run them simultaneously with 'parfor' command as attempted below:
parfor i=1:length(mfile_name)
run(mfile_name{i});
end
Then I get the subject error. Surely enough, if I just use 'for', then it works just fine.
Why is this and how can I get it work?
Your help will save me ^_^
Thank you in advance,
Eric

采纳的回答

Walter Roberson
Walter Roberson 2015-8-14
scripts are essentially not compatible with parfor if the scripts create any variables or use any values from the workspace that the parfor is executing in.
If you can, convert the scripts to functions and pass any necessary values into the functions, and instead of using run() use a cell array of function handles.
  6 个评论
Eric Hong
Eric Hong 2015-8-26
This didn't solve the issue. However, I believe it has everything to do with how my functions are written and I now know how to use the function handle method. I will have to clean up my functions first. Then, I'm sure this method will work.
Thank you,
Eric
Walter Roberson
Walter Roberson 2015-8-26
Are you possibly writing them somewhere on your path instead of into your current directory?

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