I haven’t watched this, but a pointer to a video on MSDN came across the Twitter the other day that talks about developing apps on Win HPC Server
Learn about both traditional and new High Performance Computing (HPC) programming models enabled via Windows HPC Server 2008. Discover how the Microsoft Message Passing Interface (MPI) enables distributed parallel computing scenarios and how to host Windows Communication Foundation (WCF) services within a highly scalable compute cluster.
The link to the video is wrong
Thanks santiago. I made a cut and past error. Fixed now.