Dear EasyBuilders, I am facing a problem with the OpenMPI/1.4.5-GCC-4.6.3-no-OFED module. It doesn't work with some software packages (NWChem for example) and gives and error message similar to this one.
[comp023.local][[32496,1],72][btl_tcp_endpoint.c:638:mca_btl_tcp_endpoint_complete_connect] connect() to 192.168.30.24 failed: Connection refused (111) I have installed the same OpenMPI version manually and it worked fine. Also, I have installed another version of OpenMPI using EasyBuild and it worked fine. The importance of this module comes from that this is the one included in the goalf-1.1 module which became very popular on our system at BA and we always use it to build our software. What I understand from this error is that some network interfaces are note reachable by the MPI. On the other hand, those interfaces are working fine with the other versions of MPI and doesn't give any error. I don't know if this is relevant or not but it is reporting this error on the InfiniBand network (192.168.30.0 subnet). Any ideas regarding troubleshooting or solutions to this problem. Best Regards, Mohammed Gaafar HPC System Administrator Supercomputer Project International School of Information Science Bibliotheca Alexandrina Tel: +20 3 4839999 Ext.: 1453 Cell: +201061822670 / +201117223299
