Two Infiniband networks.

[Adalberto_Fazzio]

Hello all!

I have a SGI cluster with two separated infiniband networks. I want to use both networks for MPI comunications, how do I configure the Intel MPI this way?
There's anything to do with the "Set I_MPI_DEVICE=:"command?

Thank you for your attention.

Best regards.

[Dmitry_S_Intel]

Hi!

Yes, it is possible with multirail.

Release Notes:
"Native InfiniBand* interface (OFED* verbs) support with multirail capability for ultimate InfiniBand* performance
- Set I_MPI_FABRICS=ofa for OFED* verbs only
- Set I_MPI_FABRICS=shm:ofa for shared memory and OFED* verbs
- Set I_MPI_OFA_NUM_ADAPTERS, etc., for multirail transfers"

Please take a look atI_MPI_OFA_NUM_ADAPTERS andI_MPI_OFA_NUM_PORTS also.

--
Dmitry Sivkov

[Adalberto_Fazzio]

Hi Dmitry, thank you for your quick response!

Your advice will be very helpful, I'll take a look at those options in the manual to be sure of what I'm doing :)

Thank you again!