I am not sure about drivers because those were installed by someone else during cluster setup. I see following information about infiniband card.
The card is DDR InfiniBand Mellanox ConnectX. 


On Wed, Nov 28, 2012 at 3:17 PM, John Hearns <hearnsj@googlemail.com> wrote:

Those diagnostics are from Openfabrics.
What type of infiniband card do you have?
What drivers are you using?


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