Yo all I've been playing with the trunk today and found it appears to be broken for comm_spawn. I'm getting two types of errors, perhaps related:
1. if everything is being done on localhost, I do not see any of the IO from the child process. Mpirun executes and completes cleanly, however. Because, the spawn'd child terminates so quickly, I haven't been able to positively confirm it is actually running - though I have some indication that it is. 2. if running on multiple hosts, I see the output from the child processes, but mpirun "hangs" in MPI_Comm_disconnect. A ctrl-C is able to kill the entire job. Any ideas on what might have happened? This was all working not that long ago...can't swear to an r-level at the moment, but am hoping someone has an idea before I start having to blindly work backwards to find out what broke it. Thanks Ralph