[Beowulf] Intro question

Bogdan Costescu Bogdan.Costescu at iwr.uni-heidelberg.de
Mon Dec 8 06:20:31 PST 2008

On Fri, 5 Dec 2008, Joe Landman wrote:

> The MDGrape guys might have a thing or three to say.  They have been 
> demonstrating some pretty awesome performance for years.

True, but my impression was that they were focused on getting the most 
performance from one unit, while the DEShaw approach factored in a 
high degree of parallelization from the beginning.

I've heard the talk in Dresden earlier this year and I liked hearing 
about an idea that I've also had some time ago but not heard talking 
about on this list: interconnect hardware being able to DMA directly 
to/from CPU cache. I don't know how useful such a feature is for a 
general purpose interconnect (or MPI library) but it certainly fits 
well in the specialized frame of molecular dynamics (or rather, of how 
MD is implemented today).

Bogdan Costescu

IWR, University of Heidelberg, INF 368, D-69120 Heidelberg, Germany
Phone: +49 6221 54 8240, Fax: +49 6221 54 8850
E-mail: bogdan.costescu at iwr.uni-heidelberg.de

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