This error indicates the IP address exported by the peer is not reachable.
You can use the tcp btl parameters:

-mca btl_tcp_include eth0,eth1

or

-mca btl_tcp_exclude eth1

To specify the set of interfaces to use/not use.



George was correct - these should be btl_tcp_if_include/btl_tcp_if_exclude.

Regards,
Tim

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