In case you are interested on tunning options for your Infiniband interfaces

you can perform following changes from the console: 

- change infiniband mode from datagram to connected  - in DSS can be done as CTRL+ALT+W -> Infiniband tuning)

- after changing to connected mode set jumbo frames (MTU 65520) - in DSS   cane be done as  CTRL+ALT+W -> Tuning options -> Jumbo frames

This tunning should be also applied to all Initiators and NFS clients systems