Cheap PCs from Wal-Mart
hahn at physics.mcmaster.ca
Mon Jun 2 14:42:32 EDT 2003
> re. the points on floating point performance, these are valid.
> But I think we should note the new Nehemiah boards which are just out.
> Well worth looking at I think - I intend to get one soon, and I'll report
> back if/when I do.
hmm. for rhetorical purposes, let's compare the numbers from this article
to two high-end unis:
dhry whet mmi mmf memi memf
e800 1048 285 963 1588 194 208
e10k 1300 351 1193 1968 233 245
e10k-n 1591 366 2255 2285 664 389
p4 6809 9327 22170 13896 5050 5041
ath 3319 8855 13011 12217 2912 3080
I think it's pretty clear that you need to expect much lower
performance from even the 'high-end' VIA chips. if your code
more resembles dhrystone (mostly integer, cache friendly),
then you can mostly expect to scale with clock speed, and the
VIA chips might be attractive on a speed/(heat*cost) basis.
for general clusters, where memory bandwidth and FP performance
and integrated gigabit are big advantages, VIA doesn't compete.
data is from the article above and
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