Open MPI has been formally joined by Voltaire, an Infiniband vendor. Woo hoo!
Sun has announced their intent to join (indeed, we’ve been talking with them for a few months now); we’re just awaiting the legal paperwork to make it all official (we’re extremely careful about intellectual property in this project).
All of Open MPI’s members are listed here. The great part is that each of the members have their own interests and goals and will actively be working on the Open MPI code base to expand it for what they want/need.
The party is getting larger!