Ralph H Castain <r...@lanl.gov>: >even though the HNP isn't actually part of the MPI job itself, or the >processes are opening duplicate OOB sockets back to the HNP. I am not >certain which (or either) of these is the root cause, however - it needs >further investigation to identify the source of the extra sockets.
If you are using the IPv6-ready code: in this case we need to create two sockets for each OOB/TCP. One uses AF_INET and one uses AF_INET6. IIRC, we close the superfluous socket once the connection attempt on either one succeeds. Adrian, correct me if I'm wrong. :-) Unfortunately, there's no easy way around this. Christian -- Dipl.-Inf. Christian Kauhaus <>< Lehrstuhl fuer Rechnerarchitektur und -kommunikation Institut fuer Informatik * Ernst-Abbe-Platz 1-2 * D-07743 Jena Tel: +49 3641 9 46376 * Fax: +49 3641 9 46372 * Raum 3217