0 Replies Latest reply on Jul 16, 2018 9:47 AM by dongzy

    Question about RC (read) and UD (send/recv) performance over CX3 and CX4 NIC

    dongzy

      I am using CX3 and CX4 NICs to measure the throughput of RDMA verbs (RC Read and UD Send/Recv).

       

      When I use the same test code to measure the peak throughput of small messages on CX3 and CX4.

      The performance of RDMA Read Verbs is lower than Send/Recv Verbs on CX3, while the comparison result is reversed on CX4.

       

      How about the performance trend of new generation of NICs like CX5 or CX6?