Chipsets and memory speed...

[Morton, Scott]

Anyone know the difference in bandwidth/stream performance between a PC with
a Duron vs an Athlon cpu?  Is there much/any difference?

I looked at the stream benchmark pages, but didn't find any benchmarks using
the Duron.

By the way, (to whom it may concern) I also attempted to use the search
engine at www.supercomputer.org (to find any benchmarks which may have been
discussed on this list), but it appears to be in operable.

Scott Morton

-----Original Message-----
From: Mark Hahn [mailto:hahn at coffee.psychology.mcmaster.ca]
Sent: Monday, December 11, 2000 10:54 AM
To: Beowulf
Subject: RE: Chipsets and memory speed...


> ALL current Intel motherboards have a single shared bus for all CPU access
> to main memory. PCI DMA to main memory may or may not collide with CPU to

according to the specs, at least, boards based on the profusion chipset
(aka corollary) have *two* shared buses - it's essentially two 4-way
nodes (cpus on FSB100 with dram) with a cache-coherent bridge.  it should 
be able to sustain the traditional ~400 MB/s on each side.  hellishly
expensive, though, and nowhere near competitive with ultra-cheap
uniprocessor
duron nodes that push upwards of 600 MB/s.

regards, mark hahn.


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