On Friday 22 October 2010, Rudi Ahlers wrote: > Hi all, > > Does anyone have, or know of a comparison chart of the different > network adapters, i.e. 1GB / 10GB, Infiniband, etc. And if possible > with a few top brand NIC's and switches listed as well. Iperf(tcp) Good 1G eth: 945 Mbps Good 10G eth(w/o tcp tuning): 6-7 Gbps Same 10G with some tcp tuning): 9.4 Gbps Infiniband(MPI or raw verbs): SDR: 980 MB/s DDR: 1900 MB/s QDR: 3700 MB/s I don't have numbers for IPoIB (tcp on Infiniband) since we dont use that much. > I would like to see, for example, what the max throughput is of a 1GB > NIC (and this could probably differ from PCI to PCIE-x1 to PCIE-x4), > and 10GBE. Different switches would probably also have different > ratings, Most or all switches I've used the last few year can take wirespeed 1G eth on atleast a few ports concurrently. For 10G eth I don't know much more than that our procurve, cisco and bladenetworks equipment can do wire speed (atleast on a few ports concurrently). Infiniband swtiches are typically very good at delivering bandwidth (as long as you avoid congestion). > but could a layer 2 switch & layer3 switch deliver the same > performance for example? As previously stated by another poster, layer3 is only features, says nothing about performance (although features tend to cost you..). > Basically I need to know what upload / download speeds I should be > getting from the different networks, set aside other options like CPU > / RAM / disc IO / etc. All of my figures above assumes "good hardware". If you want to push 10G or more you'll need PCI-express gen2 and a modern CPU/memory. /Peter
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