On Tue, 2006-10-24 at 06:38 -0700, LJ Mace wrote:
> I've been asked this question and have looked around
> but can't seem to find an answer.
You can come up with a ratio yourself, but it will be meaningless. IBM
doesn't publish MIPS for its S390/zSeries processors, so you'll have to
go to a third party for their own inaccurate estimates. Having done
that, you can probably find a mention in some of the IBM R&D papers
about base cycle times for their newer processors. ("GHz" is not
something that IBM touts; it's an incidental data point in some of their
architectural descriptions.) Pick one of the several clocks present on
a modern processor, then divide it by the MIPS value that you got
elsewhere and you'll have your answer.
But what you'll also have is a dubious number, based on a misleading
third-party performance estimate for a workload you'll never see, and a
totally unrelated low-level hardware engineering detail. I cannot
personally think of a less useful calculation.
--
David Andrews
A. Duda and Sons, Inc.
[EMAIL PROTECTED]
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