This site contains the "web-based
proceedings" of Summer Institute on Advanced Computation that
focused on high- performance high-throughput Cluster
Computing.
MPI is everything that PVM is, and more. MPI is a library for
message-passing primitives. Several implementations are
available. www-unix.mcs.anl.gov/mpi/
Parallel Virtual Machine combines a networked collection of Unix
and/or NT computers into a single large parallel computer. The software
is very portable running on everything from laptops to CRAYs. A
"precursor" to MPI. www.epm.ornl.gov/pvm/pvm_home.html
"Grids are persistent environments that enable software
applications to integrate instruments, displays, computational and
information resources that are managed by diverse organizations in
widespread locations."