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
Dresden University of Technology
Center for Information Services
and High Performance Computing (ZIH)