[Beowulf] many cores and ib

Gilad Shainer Shainer at mellanox.com
Mon May 5 16:56:55 EDT 2008


 

> -----Original Message-----
> From: Greg Lindahl [mailto:lindahl at pbm.com] 
> Sent: Monday, May 05, 2008 1:49 PM
> To: Gilad Shainer
> Cc: beowulf at beowulf.org
> Subject: Re: [Beowulf] many cores and ib
> 
> On Mon, May 05, 2008 at 01:42:49PM -0700, Gilad Shainer wrote:
> 
> > It is the same benchmark that QLogic were and are using for MPI 
> > message rate,
> 
> Like many benchmarks, you can game the benchmark, and you 
> gamed the benchmark. I guess you don't understand the 
> technical details well enough to get what's going on; we had 
> a longer discussion of this a while ago on this list.
> 
> I caught HP doing the same thing with lm_bench's lat_mem_rd 
> benchmark a while ago, and they immediately apologized and 
> stopped using it in their marketing literature. Which shows a 
> lot of class.
> 
> -- greg
> 


This goes nowhere. QLogic former benchmark for MPI message rate, is now
available also on OSU MPI, to provide the same comparison. I do not want
this conversation become a marketing bash. Especially that you are no
longer with QLogic, and your email provide a good reason for why.

Gilad. 

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