On Sunday 23 November 2008, Or Gerlitz wrote: > Michael Oevermann wrote: > > However, when I directly start a mpi job (without using a scheduler) via: > > /usr/mpi/gcc4/openmpi-1.2.2-1/bin/mpirun -np 4 -hostfile > > /home/sysgen/infiniband-mpi-test/machine/usr/mpi/gcc4/openmpi-1.2.2-1/tes > >ts/IMB-2.3/IMB-MPI1 > > > > > > I get the error message: > > > > 0,1,0]: uDAPL on host n01 was unable to find any NICs... ... > The BTL you are working with uses a library named udapl and this library > relies on the IPoIB (IP over Infiniband) NICs (e.g ib0, ib1) existence. > Assuming these nics are not configured on your system, you can either > configure them (modprobe ib_ipoib / ifconfig ib0 x.y.z.w) or use a verb > (native IB access layer) BTL which does not reply on operative ipoib.
Using verbs is the way to go. OpenMPI, afaik, does not recommend the udapl btl. I would recommend checking for the btl "openib" which is the verbs btl. If it does not exist rebuild OpenMPI (you will need libibverbs-devel). /Peter > Or.
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