The PBLAS is a component of the ScaLAPACK library. As such, installing the PBLAS library is part of the ScaLAPACK installation procedure. This process is described in . However, the PBLAS will likely become a stand-alone package in the near future, similar to what has been done for the BLAS and LAPACK libraries . In which case, the installation procedure of the stand-alone PBLAS library will be very close to what has been done for the ScaLAPACK library. This section contains code fragments that demonstrate what needs to be done in order to call a PBLAS routine. Then, we show how the PBLAS routines can be used in order to write a parallel linear system solver for distributed memory MIMD computers. This code is in fact a slightly simplified version of the ScaLAPACK code.