Author: Robert Hyatt
Date: 11:53:57 09/08/03
Go up one level in this thread
On September 08, 2003 at 14:30:41, Vincent Diepeveen wrote: >On September 07, 2003 at 14:37:17, Joost Buijs wrote: > >diep is getting tested on the 248 right now by Johan de Gelas. both amd64 and >quad opteron. > >www.aceshardware.com > >regrettably only they want to test 32 bits mode... ...but well diep is NUMA. I >have shipped a NUMA version of diep to them that can go up to 4 cpu's. So that's >interesting to see how it does. Johan is very good in testing. also he does not >cheat. > >some other sites that tested diep in the past cheated. when the production >version of those machines was released and i tested with same executable, it >appeared that intel had cheated by 5% in speed. > >Also the speedup from SMT they had with diep was higher than when some others >who had purchased dual Xeons, could not get to. > >www.aceshardware.com doesn't do that. Johan is a very objective testers. > >His main intention is to figure out how much the added branch prediction table >will do for DIEP. > >P3 has 512 entries BTB (branch target buffer) >K7 has 2048 entries BPT (branch prediction table) >opteron/amd64 has 16384. > >Intel runs behind for complex software. That is irrelevant (the size). The Intel BTB is _far_ better than that on any of the other processors you mentioned. I'll let you do the research to find out why the new Intel branch prediction is better. Hint: It detects patterns and predicts based on the pattern of past taken/not-taken cases. It's clever. If bigger were always better, 2M of direct-mapped cache would be better than 512K of 16-way set associative. It isn't. Quality still counts... > >Best regards, >Vincent > > >>On September 07, 2003 at 11:43:26, Michael P. Nance Sr. wrote: >> >>>On September 07, 2003 at 11:31:30, Gian-Carlo Pascutto wrote: >>> >>>>On September 07, 2003 at 10:54:47, Michael P. Nance Sr. wrote: >>>> >>>>>If I may,how can I get that version of WS 2003 (64 bit) so I can run Deep Sjeng >>>>>on My dual (246) Operton also? I'm at a Crossroads now, on what OS to use with >>>>>My Operton. I want to be able to go 64 bit.I wouldn't be able to accomplish >that with Windows XP Pro. Please fill in the gaps for Me.>>>>Mike >>>> >>>>You cannot get it. According to other posters here, there's a beta, but >>>>I don't think it is available to members of the general public. >>>> >>>>The only way to run 64 bit programs on the Opteron right now is to >>>>use Linux. >>>> >>>>-- >>>>GCP >>> >>>When might a commerical version of WS 2003(64 bit) be available to be purchased >>>by Us Peons? I don't suppose that there is some kind of a restriction on using >>>Linus with My Opteron or is that a dead Horse also? If so,what would be the cost >>>compairson comparired to WS 2003,would It work?>>>>Mike >> >>It will take a few months before a 64 bit AMD version of windows will hit the >>streets. There seems to be a beta version of windows XP for AMD-64 to. >>GamePC already did a preview. >>http://www.gamepc.com/labs/view_content.asp?id=amd64xp&page=1 >>Probably it is worth while to wait somewhat longer, AMD will release the 2200 >>MHz. 248 Opteron very soon according to the inquirer. >>http://www.theinquirer.net/?article=11371 >>This will be a real beast!
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.