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cplat
2008 Dec 12
0
RE: [ofa-general] Infiniband performance
...find them in email), they were a fair bit better than Gen3.
With IPOIB, you want connected mode and a large 32Kb+ MTU for max bandwidth, 1Gbyte/sec or more should be possible with Gen 4.
Here are some of my original test results on my Opteron System with Gen3 cards:
#qperf 192.168.10.160 tcp_bw tcp_lat
tcp_bw:
bw = 866 MB/sec
tcp_lat:
latency = 30.8 us
# qperf 192.168.10.160 rc_bi_bw
rc_bi_bw:
bw = 1.71 GB/sec
The second result is bi directional, Gen4 on PCI-E V2 should get quite a lot better.
Rob
-----Original Message-----
From: Jan Ruffing [mailto:ruffing@motama.com...