http://blogs.technet.com/b/windowshpc/archive/2009/06/02/mpi-cluster-debugger-in-visual-studio2010-beta1.aspxIf you ever write MPI program in Windows HPC cluster, you should be familiar with MPI Cluster Debugger in Visual Studio2005/2008. Also, you can find much resource online talking about it (such as blog , white paper ). Do you like to debug MPI programen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)