def __set_gpu_arch(self):
        """Older versions of MVAPICH2 (2.3b and previous) were hard-coded to
        use the "sm_20" GPU architecture.  Use the specified value
        instead."""
Older versions of MVAPICH2 (2.3b and previous) were hard-coded to
        use the "sm_20" GPU architecture.  Use the specified value
        instead.
hpccm/building_blocks/mvapich2.py