1 | The first version of PVM was written during Summer of `89 at Oak Ridge National Laboratory. It was not released, but was used in applications at the lab. |
2 | Version 2 was written from scratch during Feb `91 at the University of Tennessee, Knoxville, n and released in March of that year. It was intended to clean up and stabilise the system so that external users could benefit. |
3 | Version 3 was redesigned from scratch, and a complete rewrite started in Sep `92, with first release of the software in March `93. While similar in spirit to version 2, version 3 includes features that did not fit the old framework - most importantly fault tolerance, better portability and scalability. |