[OMPI users] I got "ssh_exchange_identification" errors when I mpirun over 1500 times almost at the same time

Hello everybody, I'm a beginner in Open MPI world. Maybe it's a simple problem, but I cannot figure out what happen on it... My situation is I use 4 hosts totally, and their IP address are static. I can't do *mpirun* over 1500 times almost at the same time. (but it's always okay less than 1000 ti

[OMPI users] "C++ compiler absolute"

I built from trunk a couple days ago and notice that mpicxx has an erroneous path: $ ~/usr/ompi/bin/mpicxx -show no -I/homes/jedbrown/usr/ompi/include -pthread -Wl,-rpath -Wl,/homes/jedbrown/usr/ompi/lib -Wl,--enable-new-dtags -L/homes/jedbrown/usr/ompi/lib -lmpi The C compiler is fine $ ~/usr