FLOSS Weekly recently podcast an interview with Jeff Squyres of OpenMPI. OpenMPI is an open-source implementation of the MPI programming standard. Jeff makes some interesting points on how this has worked out and why it makes, and what MPI is all about. ´
I listened to episode 35 of FLOSS Weekly that interviewed Brian Aker, creator of the Drizzle fork from MySQL. As most recent episodes of FLOSS Weekly, it is pretty good technical material. What I found interesting was the technical vision behind Drizzle, and how they are aggressively going for quite wide multicore hosts.