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 -- Dresden University of Technology Center for Information Services and High Performance Computing (ZIH) D-01062 Dresden Germany e-mail: andy.geo...@zih.tu-dresden.de WWW: http://www.tu-dresden.de/zih
