<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000'>Hi,<div><br></div><div>Using MPI_Comm_spawn I'd like to know how to specify the list of hosts on which to spawn the new processes. The standard http://www.mpi-forum.org/docs/mpi-3.0/mpi30-report.pdf) says that the info field have some reserved keys, but nothing to actually give the list of hostnames. The closest key is "host" but it seems to designate a single host, not a set, and not even the number of process per host.</div><div><br></div><div>What would be the keys for that in mpich and would they be understood my other implementation (e.g. OpenMPI)?</div><div><br></div><div>Also another question related to MPI_Comm_spawn: how can a parent application be aware that the application it spawned terminated?</div><div>And what happens when the parent application exits before the spawned one?</div><div><br></div><div>Thanks,<br><br><div><span name="x"></span><font size="2"><font size="3">Matthieu Dorier<br>
</font>PhD student at ENS Cachan Brittany and IRISA<br><a href="http://people.irisa.fr/Matthieu.Dorier">http://people.irisa.fr/Matthieu.Dorier</a></font><span name="x"></span><br></div></div></div></body></html>