Chris, Two things.
1. What is a NUMA machine. How does being NUMA affect performance or MIPS values. 2. I still think that MIPS is a good measure of performance, if used within the same line of computers. If you compare the z/890, or z/990 models, MIPS gives a good relative value of what to expect. If you compare them to a 9672, it probably isn't as relevant. The fact the IBM, when announcing new hardware, usually prints MIPS in their charts says that it is still a valid number. I'm not saying it is best, or that there isn't problems with MIPS, but the MIPS numbers still make more sense to me than any other indicators. Eric Bielefeld P&H Mining Equipment On Fri, 3 Jun 2005 10:27:02 -0500, Craddock, Chris <[EMAIL PROTECTED]> wrote: > >There are plenty of "MIPS" charts floating around the ozone >both free and fee based. Cheryl Watson charges for access to >her newsletter and the fruits of her research. That fee is >chump change, so I don't begrudge Cheryl in the slightest. If >she can recover a buck, more power to her. Phil gives his away >and that's fair enough too. > >I am more bothered (as Ed Jaffe was) by the question of why >anyone pays attention to "MIPS" numbers any more. There was >quite a fuss a couple of SHARE's ago with "underperforming" >z990s. > >Maybe they were and maybe they weren't but the real problem >is that todays machines are wildly different beasts than the >good old System/370 Model 158 that has been the reference >standard for "1 MIP" - AND - the software, the applications >and workloads are also wildly different. > >We're comparing apples and fish. Who cares what the units are? > >BTW> do y'all realize the 990 is really a NUMA machine? It >makes a huge difference between accessing resources in the >same book and another book. Expecting it to be otherwise is >not entirely rational. Hence, some things can run like greased >cheese while other things might struggle relative to your >expectations. Those differences are only going to become more >acute as the technology evolves. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
