Use parfor and getting "Index exceeds matrix dimensions" error
2 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
NOOR AL-SHAKARJI
il 25 Feb 2017
Commentato: NOOR AL-SHAKARJI
il 26 Feb 2017
Pleas need help , I use Parfor to run the code in parallel but I got "Index exceeds matrix diamensions"
when I run the code with for it runs normally.
Rootpath=('............');
flist1=dir(fullfile(Rootpath));
parfor i=3: size (flist1,1)
inputpath=strcat(Rootpath,'/',flist1(i).name,'/');
outpath=strcat('./Output/',flist1(i).name,'/');
if ~isdir(outpath)
mkdir(outpath);
end
Read_main(inputpath,outpath)
end
2 Commenti
Walter Roberson
il 25 Feb 2017
Which line is the error report on?
I recommend by the way that you use fullfile to create the path names
Risposta accettata
Walter Roberson
il 26 Feb 2017
You could end up with mysterious path problems in the case that your Rootpath was a global variable. Global variables are not copied to parfor workers.
3 Commenti
Walter Roberson
il 26 Feb 2017
If it is a global variable, copy it to a local variable and use that in the code.
Alternately, you can use parfevalOnAll() before running the parfor, running a small bit of code that creates Rootpath as a global variable and initializing it with the appropriate value.
Or since you do not appear to write to the variable in the code, you could use parallel.pool.constant()
But really, for a simple variable such as this, best would just be to avoid using a global variable.
Più risposte (0)
Vedere anche
Categorie
Scopri di più su Loops and Conditional Statements in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!