Hi Guys, I'm really new in mpi. I've created a small grid composed of virtual and real host. grid01 real/Centos/(Open MPI) 1.2.5 grid03 virtual (xen)/Centos/(Open MPI) 1.2.5 grid04 virtual (vmware)/Centos/(Open MPI) 1.2.5
When I try to run a parallel job like this: mpirun -v -H grid01,grid04 -np 2 /mnt/ewd/mpi/fibonacci/fibonacci_mpi The job run If I try instead mpirun -v -H grid03,grid04 -np 2 /mnt/ewd/mpi/fibonacci/fibonacci_mpi or with all 3 nodes I get the error: 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 problems. This failure appears to be an internal failure; here's some additional information (which may only be relevant to an Open MPI developer): PML add procs failed --> Returned "Unreachable" (-12) instead of "Success" (0) Seems like there is something wrong between grid03, grid04. But If I run the job indivdually on every host it runs without problem. I can't understand what happens. Any Ideas? In attach all the details. But Does Exist a guide / howto configure and setup openmpi (not build) ? Thanks Alex
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