scikit-learn/scikit-learn — pull request #2756 by ogrisel (2014-01-15 14:49:34+00:00)
Title: [MRG] FIX #1565: fix race condition in parallel pre-dispatch by upgrading joblib

I fixed a race condition upstream in joblib. This should fix potential crash of `cross_val_score` and `GridSearchCV` with the "[Parallel] pool seems closed" and `ValueError: generator already executing` error messages.

If no one objects, I will merge this fix as soon as travis is green.