Keywords: TechAssessWG
Hi folks,
Here's how I estimated the flops needed for Jacek's CPU requirement
estimate for supporting DB searching. This was based on lore gleaned from
a Google search on the subject. I understand that the theoretical/peak
flops of a cpu is usually 2 times the nominal clock rate, so...
Psus = 2 * Scpu * Nproc * Rsus
where Psus = the sustained performance in flops
Scpu = the speed of the CPU used (1.8 GHz)
Nproc = the number of processors needed (5329)
Rsus = reality factor Psus/Ppeak; which I picked as 65% from an
unscientific sampling of PC clusters.
As I mentioned, I'm no expert on this, so your corrections are welcome.
cheers,
Ray
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