[Beowulf] ethernet performance testing

Benson Muite benson.muite at ut.ee
Fri Mar 17 08:26:48 PDT 2017

This was nice (support has ended, but still runs):


Comparisons with other things would be interesting.


On 03/17/2017 04:33 PM, Lux, Jim (337C) wrote:
> This is a bit of a blast from the past question.. Back when Beowulfs 
> were the “new hot thing”, we all used Ethernet as the interconnect
> There was a bunch of traffic on the list about measuring Ethernet 
> performance using various utilities, and all the ways to optimize the 
> performance (zero copy Ethernet drivers and the like, some interfaces 
> just being slow, etc.).
> What’s the current strategy and tools for looking at the Ethernet 
> stack and identify?  I have a colleague who is working with a software 
> radio peripheral (USRP) that streams samples out, and he’s getting 
> better performance with USB3 than with GigE - it may be that this is 
> just the way it works USB is dedicated master/client, while GigE is 
> peer to peer.   So I suggested he do some back to back testing using a 
> pair of PCs to know what the limit is.
> And he turned it around and asked “so what tools can I use?”
> iperf?
> netcat?
> I’ll dig through the archives too..
> James Lux, P.E.
> Task Manager, DHFR Space Testbed
> Jet Propulsion Laboratory
> 4800 Oak Grove Drive, MS 161-213
> Pasadena CA 91109
> +1(818)354-2075
> +1(818)395-2714 (cell)
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Hajussüsteemide Teadur
Arvutiteaduse Instituut
Tartu Ülikool
J. Liivi 2, 50409
Research Fellow of Distributed Systems
Institute of Computer Science
University of Tartu
J.Liivi 2, 50409
Tartu, Estonia

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