Re: [OMPI users] Network performance over TCP

2017-07-12 Thread Adam Sylvester
I switched over to X1 instances in AWS which have 20 Gbps connectivity. Using iperf3, I'm seeing 11.1 Gbps between them with just one port. iperf3 supports a -P option which will connect using multiple ports... Setting this to use in the range of 5-20 ports (there's some variability from run to r

Re: [OMPI users] Network performance over TCP

2017-07-12 Thread Barrett, Brian via users
Adam - The btl_tcp_links flag does not currently work (for various reasons) in the 2.x and 3.x series. It’s on my todo list to fix, but I’m not sure it will get done before the 3.0.0 release. Part of the reason that it hasn’t been a priority is that most applications (outside of benchmarks) d