PVM reference manual
& more documentation. What you will find there are compressed
and postscript files, the link even seems to be quite fast.
PVM++: A C++-Library for PVM usefull?? Newsgroups: comp.parallel.pvm
MPI (Message-Passing Interface) seems to become the new standard:
Mpi Homepage [Link] Mpi: Message-Passing Interface Standard [Link] Notes about MPI Lam Mpi [Link]
For example: man -M /usr/shared/pvm3/man pvm_recv