Hi openmpi developers, I have been evaluating our FEM aplication with new openmpi-1.7rc7 under Torque job controler.
Now I encountered a trouble that "-hostfile" does not work properly. Since my application is hybrid(MPI+OpenMP), I have to modify $PBS_NODEFILE and use "-hostfile". I don't add new hosts to the hostfile according to FAQ. It's just a subset of the hosts allocated to the Torque. At leaset, this method works well with openmpi-1.6.x. I hope this issue will be fixed in the next release of openmpi-1.7. Best Regards, Tetsuya Mishima (1) Example of 2MPI having 4 threads: $PBS_NODEFILE -> modified hostfile node01 node01 node01 node02 node01 node01 node02 node02 node02 node02 (2) The error message I got is as follows: -------------------------------------------------------------------------- A hostfile was provided that contains at least one node not present in the allocation: hostfile: pbs_hosts node: node01 If you are operating in a resource-managed environment, then only nodes that are in the allocation can be used in the hostfile. You may find relative node syntax to be a useful alternative to specifying absolute node names see the orte_hosts man page for further information. --------------------------------------------------------------------------
