ScaLAPACK (SCAlable Linear Algebra PACKage) is a library of parallelized Linear Algebra routines. It contains routines for solving systems of linear equations, least squares problems, and eigenvalue problems.
ScaLAPACK is free available from http://www.netlib.org/scalapack/ , and is highly portable.
ScaLAPACK contains routines for:
For portability reasons, communications takes place inside the PBLAS routines through calls to the BLACS library.