Hi All, I have a general question about Open MPI used with a benchmark (IMB). I have a RoCE NIC and this device requires 16 queue pairs to achieve full bandwidth (~97GbE) in our performance testing app. Is anyone aware if that many queue pairs being required will be a problem for running Open MPI + IMB with maximum bandwidth used. I don't recall seeing any way to set the amount of queue pairs Open MPI will use to complete a job, which makes me think this question may show my lack of understanding of Open MPI. If more information is required to answer this question please let me know what data is relevant.
Thank you, Brendan Myers
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