workers idling after a while when using parfor loop
3 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
I have a script that fits 2D gaussians in captured images from my measurement setup. Since I generate ~100.000 images every measurement that's quite a task. I have a parfor loop to analyze these images and it works fine, but after several hours only about a quarter of the workers are still busy, the rest is idling. This leaves the system underused and I can't figure out why, especially because it starts out working fine but breaks somewhere along the way. Can anybody help me to debug this?
1 commentaire
Edric Ellis
le 6 Nov 2015
parfor uses a static means of distributing work, but it attempts to load-balance so that this situation does not occur. Do you know if the analysis can take a different amount of time for different images? If so, that can cause load imbalances.
Réponses (0)
Voir également
Catégories
En savoir plus sur Parallel for-Loops (parfor) dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!