I have been using Mellanox ConnectX 2 QDR cards in a point to point link between two machines, with opensm running on one machine. This has worked very well.
Recently I got a Mellanox IS5022 switch - which does not run an SM. So I know I still need that opensm instance running.
If I insert the IS5022 between the two machines, do I need to restart opensm?
My reading says I do not have to. However theory and practice do not always agree ;-)
If inserting the switch will confuse opensm, then I'll schedule that change for off peak hours.
Thanks in advance!