{

PVM calls within the BLACS
PVM (Parallel Virtual Machine) is a software package that permits a heterogeneous collection of serial, parallel, and vector computers hooked together by a network to appear as one large computer.

BLACS (Basic Linear Algebra Communication Subroutines) is a software package to perform communication at the same level as the BLAS are for computation.

BLACS have been written in terms of calls to PVM.

Allows network of workstations to be used with minimal change.

MPI -- Message Passing Interface
Standard for Message Passing

BLACS MPI underway

Slide 74 of SIAM Tutorial, Jack Dongarra UT/ORNL. (Updated 01/31/95)