[OMPI users] Technical details of various MPI APIs

Hi, I am trying to explore more on technical details of MPI APIs defined in OpenMPI (for e.g., MPI_Init(), MPI_Barrier(), MPI_Send(), MPI_Recv(), MPI_Waitall(), MPI_Finalize() etc) when the MPI Processes are running on Infiniband cluster (OFED). I mean, what are the messages exchanged between MPI

Re: [OMPI users] orte_grpcomm_modex failed

This usually means that you have a Open MPI version mismatch between some of your nodes. Meaning: on some nodes, you're finding version X.Y.Z of Open MPI by default, but on other nodes, you're finding version A.B.C. On Oct 21, 2011, at 7:00 AM, devendra rai wrote: > Hello Community, > > I ha

[OMPI users] orte_grpcomm_modex failed

Hello Community, I have been struggling with this error for quite some time: It looks like MPI_INIT failed for some reason; your parallel process is likely to abort.  There are many reasons that a parallel process can fail during MPI_INIT; some of which are due to configuration or environment pro