[OMPI users] COLL-ML ATTENTION

[larkym via users]

Good evening,
Can someone help me understand the following error I am getting?
[coll_ml_mca.c:471:hmca_coll_ml_register_params] COLL-ML ATTENTION: Available IPoIB interface was not found MCAST capability will be disabled. 
I am currently using open mpi 2.0 that comes with Mellanox. I am running CentOS 7.x. It is multihomed. 
Is MPI possibly using one of my NICs that does not support RoCE?

Sent from my Verizon, Samsung Galaxy smartphone

[Deva]

Mellanox HCOLL requires valid IPoIB setup for to use IB MCAST
capabilities. You can disable MCAST features with
-x HCOLL_ENABLE_MCAST_ALL=0

Post by larkym via users
Good evening,
Can someone help me understand the following error I am getting?
Available IPoIB interface was not found MCAST capability will be disabled.
I am currently using open mpi 2.0 that comes with Mellanox. I am running
CentOS 7.x. It is multihomed.
Is MPI possibly using one of my NICs that does not support RoCE?
Sent from my Verizon, Samsung Galaxy smartphone
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