There is no high-speed network, only eth0. So MPI communication must be TCP
over eth0. I have tried forcing eth0 with --mca btl_tcp_if_include eth0, and
also by specifying the eth0 subnet. (Looking at the btl_tcp_component.c
source, I see that the subnet is just translated back into the inter
Use mpirun --mca btl_tcp_if_exclude eth0 should fix your problem. Otherwise
you can add it to your configuration file. Everything is extensively
described in the FAQ.
George.
On Jan 26, 2015 12:11 PM, "Kris Kersten" wrote:
> I'm working on an ethernet cluster that uses virtual eth0:* interfaces
I'm working on an ethernet cluster that uses virtual eth0:* interfaces on the
compute nodes for IPMI and system management. As described in Trac ticket
#3339 (https://svn.open-mpi.org/trac/ompi/ticket/3339 ), this setup confuses
the TCP BTL which can't differentiate between the physical and vir
