Hi I start my run with: mpirun -p4pg runconf ./exe1 cat runconf node1 0 exe1 node2 1 exe2 node3 1 exe3 Is there a way of running, say, exe2 through a debugger? I am using gdb/fdb and don't have access to TotalView. I am using mpich-1.2.7p1. Thanks, Tiago