sudo rpm -ihv bsu-3.0.1-1.x86_64.rpm
For Plplot graphics in addition to Gnuplot, the CentOS-7 command is:
sudo rpm -ihv bsu-3.0.1+plplot-1.x86_64.rpm
For Plplot graphics in addition to Gnuplot, the CentOS-6 command is:
sudo rpm -ihv bsu-3.0.1+plplotold-1.x86_64.rpm
The above distinction between CentOS-6 and CentOS-7 is due to the difference in the vintage of the Plplot libraries and the backward incompatibilities that have developed.