interconnect latency, dissected.

John Taylor johnt at quadrics.com
Thu Jul 3 06:39:21 EDT 2003


This result was achieved on a ServerWorks GC-LE within a HP Proliant DL380
G3.

 

> -----Original Message-----
> From: Joachim Worringen [mailto:joachim at ccrl-nece.de]
> Sent: 03 July 2003 09:22
> To: John Taylor; 'beowulf at beowulf.org'
> Subject: Re: interconnect latency, dissected.
> 
> 
> John Taylor:
> > For completeness here is the shmem_put performance on a new bridge.
> >
> >
> > prun -N2 sping -f put  -b 1000 0 8
> >   1:        4 bytes      1.60 uSec     2.50 MB/s
> >   1:        8 bytes      1.60 uSec     5.00 MB/s
> >   1:       16 bytes      1.58 uSec    10.11 MB/s
> 
> The latency decrease is impressive for this bridge - which 
> one is it? Can you 
> tell?
> 
>  Joachim
> 
> -- 
> Joachim Worringen - NEC C&C research lab St.Augustin
> fon +49-2241-9252.20 - fax .99 - http://www.ccrl-nece.de
> 
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