Computation times

00:03.285 total execution time for 3 files from examples/mlearning/dimension_reduction:

Example	Time	Mem (MB)
Mixture of experts with PCA (plot_moe_burgers.py)	00:02.691	0.0
Proper orthogonal decomposition (POD) (plot_klsvd_burgers.py)	00:00.348	0.0
Principal component analysis (PCA) (plot_pca_burgers.py)	00:00.246	0.0