Computation times

01:47.971 total execution time for 5 files from auto_examples/basics:

Example	Time	Mem (MB)
Use iterative reconstruction algorithms (demo_custom_optim.py)	01:27.344	0.0
5 minute quickstart tutorial (demo_quickstart.py)	00:12.408	0.0
Bring your own dataset (demo_custom_dataset.py)	00:04.381	0.0
Use a pretrained model (demo_pretrained_model.py)	00:03.182	0.0
Bring your own physics (demo_custom_physics.py)	00:00.656	0.0