My bad, i forgot btl/tcp is using all the interfaces by default (eth0 *and* ib0)
is eth0 available on all your nodes or just the node running mpirun ?
you can try to use a subnet instead of an interface name
mpirun --mca btl_tcp_if_include 172.24.44.0/23 ...
if you are still facing some
Dear Gilles,
thank you for quick response.
pml/cm doesn't work at all
When I use "--mca pml ob1" I still see traffic in /usr/sbin/perfquery, but the
program starts running a lot slower. E. g. ib.C.64 benchmarks runs 33 seconds
in contrast to less than 1.
I also see many if following warning
Hello,
I work with an Infiniband cluster, but I want to force OpenMPI to use
specific network interface.
I tried to do this for example using mpirun as follows:
mpirun --map-by node --mca btl self,tcp -np 16 bin/is.C.16
But counters returned by /usr/sbin/perfquery still keep showing that
