Infiniband on two ports?

Question

linux

whether it is possible to unite two servers on two ports by two port card?
https://www.xcom-shop.ru/mellanox_technologies_mcx...
Now if you connect via two ports, the card either stops working at all, or one port is ACTIVE and the other is INIT.
Thank you.

Answer 1

Do you have opensm running on one of the hosts? In theory it should work.

Answer 2

One OpenSM entity can only work on one link.
In the case of dual port cards, each link is an independent factory. For the second link to work, it must have a different OpenSM in its factory.
Different entities are easier to locate on different hosts.