Infiniband is a specification of a high-performance network device. Different Infiniband network solutions exist, and supported devices include:
However, rather than specify the Infiniband interface, you can simply use the generic command to activate it:
-mpidriver infiniband
This is translated by STAR-CCM+ as -mpidriver hp2 and thus will let HP MPI decide which Infiniband interface is most suitable. If no Infiniband interface exists an alternative transport layer will be chosen by HP MPI, but no warning will be given to you.
Polling is on by default. To avoid the performance degradation that polling can cause, you should ensure that all processes are allocated to unique CPUs when using these drivers.
It is not recommended that you disable polling using:
-mpidriver infiniband:"-vapi -polling=no"
as this will also result in performance degradation.
Only the VAPI Infiniband Interface has been tested.