PSPVM2 is the second port of the Parallel Virtual Machine (PVM) to the ParaStation system . It is derived from the original PVM source code to retain compatibility with existing PVM applications and implementations, but uses a low level interface to the ParaStation system and direct communication within the ParaStation cluster.

At the time when it was published PSPVM2 was the fastest PVM implementation on a workstation cluster with a process-to-process latency as low as 11.5us and a sustained transfer rate of up to 9.4MB/s. It can still be used as part of a larger virtual machine and all PVM programs can be compiled for PSPVM2 without any changes.

The technical report in postscript format describes the concept, implementation and performance of PSPVM2.