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Technology Stocks : Silicon Graphics, Inc. (SGI)
SGI 91.87+1.8%Dec 5 9:30 AM EST
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To: THop who wrote (4963)6/10/1998 5:26:00 AM
From: Alexis Cousein   of 14451
 
First, a little comment -- TPC-D numbers reports should always be complete as per TPC rules, which means that you should also quote throughput numbers.

Secondly, TPC-D numbers, and certainly /$ numbers, do not scale linearly with the number of processors -- you wouldn't see many numbers with more than 1 CPU if they did. Instead of using the 4 CPU number you're using for extrapolating to 8 Pentiums, you could have used the large CPU numbers from e.g. Unisys with single servers that use a large number of Pentiums -- and it doesn't beat the SGI with 12 CPUs.

The purpose of this TPC-D submission is to show that:

-the TPC-D numbers reached are at the top of the heap -- the only submission that beats it is a *huge* NCR TeraData machine.
-the price/performance ratio is competitive.

And there are other sides to the story -- The Origin 2000 scalability story, that removes most of the snags you bump into when you trust other vendors' TPC-D numbers to size a system that is not exactly used to run TPC-D tests ;).

Scaling numbers of CPUs up while expecting the price to scale linearly is dangerous, too. Though the Origin 2000 can be expanded well beyond 8 CPUs without much impact on price linearity, the Sun UE450 chassis used in the TPC-D test can't grow -- replacing it with an UE3000 will have an impact on the figures.
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