[Beowulf] 10Gb/s iperf test point (TCP) available ?

Scott Atchley atchley at myri.com
Fri Oct 15 07:01:50 EDT 2010


On Oct 14, 2010, at 10:37 PM, Christopher Samuel wrote:

> Apologies if this is off topic, but I'm trying to check
> what speeds the login nodes to our cluster and BlueGene
> can talk at and the only 10Gb/s iperf server I've been
> given access to so far (run by AARNET) showed me just
> under 1Gb/s.

Have you tried netperf? I have read that iperf calls gettimeofday() before and after each read/write which might mean you are measuring the BG syscall time more than network throughput time.

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

-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.



More information about the Beowulf mailing list