Folks,
this is a follow up of a user report available at
http://www.open-mpi.org/community/lists/users/2016/06/29423.php
Basically, one node has a dual port ConnectX3 card, with one IB port and
one 10 GbE port.
When diagnosing some RDMA errors (not the point of this email), the user
was surprised to find that both IB and 10 GbE port were used. Both ports
appear to be managed by the openib btl, so from an Open MPI point of
view, i can only guess they have the same btl exclusivity (1024 by default).
Is this an intended behavior ?
or should the exclusivity of the 10 GbE port be lower and the one of the
IB port *by default* ?
/* so only the IB port is used by default */
Cheers,
Gilles
