On Sat, Dec 12, 2009 at 10:40 AM, Patrick Geoffray <patr...@myri.com> wrote:



>
> It is most likely due to the switch. Try back-to-back to measure without it.
> I don't know what hardware you are using, but you can get close to 10us
> latency over TCP with a standard 10GE NIC and interrupt coalescing disabled.
> With a NIC supporting OS-bypass (RDMA only make sense for bandwidth), you
> should get at least half that, ideally below 3us.

What was your tool to measure this latency? Just curious.

-- 
Rahul
_______________________________________________
Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing
To change your subscription (digest mode or unsubscribe) visit 
http://www.beowulf.org/mailman/listinfo/beowulf

Reply via email to