Simple tests:

python test_python.py       # Test to see that Python runs at all.
python test_openmm.py       # Test that the system can find a working platform
python test_cuda.py         # Test to see if the system has a CUDA enabled GPU

Additional testing suites:

validation/                 # validation suite (Mark Friedrichs)
additional-tests/           # additional testing suite (John Chodera)