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Subject: [OMPI users] ipath_userinit: userinit command failed: Cannot allocate memory
From: Anton Shterenlikht (mexas_at_[hidden])
Date: 2010-07-08 12:06:49

I'm trying to use MPI with fortran on Linux 2.6.18-164.6.1.el5 x86_64
I compiled this trivial code with mpif90:

     program simple
     include 'mpif.h'

     integer numtasks, rank, ierr, rc


     call MPI_INIT(ierr)
     if (ierr .ne. 0) then
        print *,'Error starting MPI program. Terminating.'
        call MPI_ABORT(MPI_COMM_WORLD, rc, ierr)
     end if

     call MPI_COMM_RANK(MPI_COMM_WORLD, rank, ierr)
     call MPI_COMM_SIZE(MPI_COMM_WORLD, numtasks, ierr)
     print *, 'Number of tasks=',numtasks,' My rank=',rank

! ****** do some work ******

     call MPI_FINALIZE(ierr)


I run it with mpirun.

When I use 2 cpus or less, all is fine.

When I try to specify more than 2 cpus I get this error:

u02n065:0.ipath_userinit: userinit command failed: Cannot allocate memory
u02n065:0.Driver initialization failure on /dev/ipath

where u02n065 is the node name.

Please advise

many thanks

Anton Shterenlikht
Room 2.6, Queen's Building
Mech Eng Dept
Bristol University
University Walk, Bristol BS8 1TR, UK
Tel: +44 (0)117 331 5944
Fax: +44 (0)117 929 4423