[mvapich-discuss] mvapich: using IPoIB or direct IB?

[Michael Zebrowski]

Does anyone know a good way to determine whether mvapich is utilizing
IPoIB or direct IB during its run? I have validated that the IB packet
counters increase significantly (using OFED's perfquery) on nodes that
are referenced during the mpi run (and do not increase when they are not
referenced), but I wanted to confirm that this is an accurate approach
in determining this.

 

Also, what exactly does the 'tdevice' executable report?

 

- Michael

 


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