Author: Terry McCracken
Date: 21:53:46 07/07/02
Go up one level in this thread
On July 07, 2002 at 21:54:10, Robert Hyatt wrote: >On July 07, 2002 at 10:47:32, Terry McCracken wrote: > >>On July 07, 2002 at 03:14:41, Slater Wold wrote: >> >>>On July 07, 2002 at 03:08:32, Terry McCracken wrote: >>> >>>>On July 07, 2002 at 02:49:49, Slater Wold wrote: >>>> >>>>>On July 07, 2002 at 02:46:08, Terry McCracken wrote: >>>>> >>>>>>On July 07, 2002 at 02:13:33, Slater Wold wrote: >>>>>> >>>>>>>How many nps does Diep get on 60 CPUs? >>>>>>> >>>>>>>I imagine it's not exactly "fine tuned", seeing as how testing time was short. >>>>>>>Any thoughts about this? >>>>>>> >>>>>>>Grats on the first round win! >>>>>>> >>>>>>> >>>>>>>Slate >>>>>> >>>>>>Hi Slate. I thought Diep was running on a supercomputer capable of 1 Teraflop, >>>>>>running on 1024 processors? >>>>>> >>>>>>http://www.chessbase.com/events/events.asp?pid=141 >>>>>> >>>>>>http://www.sara.nl/hpc.www/teras/description/ >>>>>> >>>>>>Terry >>>>> >>>>>They only allowed him to use 60 CPUs. Time on this machine is $30 an hour per >>>>>processor. >>>>> >>>>>For 60 CPUs it would be $1800 an hour. >>>>> >>>>>For 1024 CPUs it would be $30,720 an hour. >>>>> >>>>>I took this all from Chessbase's website. Sorry, I don't have the link handy. >>>> >>>>Ah...I see, thanks! It would kick serious ass on 1024 cpus!:o) >>>> >>>>Terry >>> >>>Oh, and you think it won't on 60 CPUs?! >> >>I didn't say that. Of course it would be strong. Let's say it would have been >>interesting if he had use of all that processing power. >> >>Terry > > >The problem is that almost _everyone_ is making gross assumptions about how >easy it is to use 1024 processors. Or even 64. Take it from someone that >has been doing this for _years_. It is not easy. Throw in NUMA and it >becomes even harder... > >This is what used to really gripe me about comments made about Cray Blitz. > >"oh, you just had hardware faster than everybody else's..." > >Which was true, of course. But _using_ that hardware took years of effort to >get things reasonably optimized... Sorry Robert! It wasn't meant to sound like this....sigh... Terry
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