DUAL CPU board vs 2 Single CPU boards: bang for buck?
math at velocet.ca
Thu Mar 7 08:00:00 PST 2002
On Thu, Mar 07, 2002 at 07:24:08AM -0500, Jim Fraser's all...
> I don't desire to start a flame but it seems to me that for computational
> intensive and memory intensive work that 2 singles are better and in most
> cases cheaper then a dual setup. The dual SMP systems out there now have to
> fight for bandwidth along the same bus. The AMD chips while fast appear to
> be starved for data when *big* memory jobs are running. Further I don't see
> the cost benefits, if you actually dig into the "bang-for-buck" duals never
> seem to win.
d.dppc on gromacs 3.0 calculation on a dual tyan 2460 board:
1 cpu 63 ps/day
dual cpu 179 ps/day
now, if only we could get 8 way athlons!
> The only significant benefit I see from dual is less hardware and higher
> computing density, that may be reason enough to go with duals esp. if your
> application does not require a lot of memory fetches.
> Jim Fraser
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Ken Chase, math at velocet.ca * Velocet Communications Inc. * Toronto, CANADA
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