Andy Georgi wrote:
Hello again ;),

after getting acceptable latency on our Chelsio S320E-CXA adapters we now want to check if we can also tune the bandwidth. On TCP level (measured via iperf) we get 1.15 GB/s, on MPI level (measured via MPI-Ping-Pong) just 930 MB/s. We already set btl_tcp_sndbuf and btl_tcp_rcvbuf to get these value. Are there any other parameters which should be in-/decreased to get a higher bandwidth?

If someone has already experiences in it, any help is welcome!

Thanks and best regards

Andy

Are you using Chelsio's TOE drivers?  Or just a driver from the distro?

Steve.

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