Author: Robert Hyatt
Date: 10:22:11 09/01/02
Go up one level in this thread
On September 01, 2002 at 09:14:05, Vincent Diepeveen wrote: >On August 31, 2002 at 23:52:42, Robert Hyatt wrote: > >As i said that's just a few prototype machines where they tried to >run 4 P4s and of course it's not stable. It _is_ running quite well. The guy was writing to the SMP kernel mailing list about a boot-up APIC issue. The machine seems to be quite impressive in that it is clearly at least 4x faster than my quad, not factoring in the hyper-threading that I have not yet tried to evaluate at all... > >>On August 31, 2002 at 20:59:37, Vincent Diepeveen wrote: >> >>>On August 31, 2002 at 06:17:24, Vincent Lejeune wrote: >>> >>>>On August 30, 2002 at 23:41:03, Robert Hyatt wrote: >>>> >>>>>On August 30, 2002 at 22:52:24, Brandon wrote: >>>>> >>>>>>There are no official quad 2.2 Ghz + machines out there. People advertise >>>>>>Dual/Quad Xeon 2.2 Ghz because of the hyperthreading.. but no machine with 4 >>>>>>actual cpus at 2.2 Ghz.... yet... >>>>>> >>>>>> - Brandon >>>>> >>>>>There is definitely _one_ out there. I personally saw the boot output from >>>>>linux and it reported 8 cpus at 2.2ghz each, which is what a 4-cpu machine >>>>>with hyper-threading looks like under linux. >>>>> >>>>>It might well be a prototype, because as you mention, I couldn't find any >>>>>official ads anywhere for such a box... >>>> >>>>after searching with altavista >>>>http://www.altavista.com/sites/search/web?pg=aq&avkw=tgz&aqmode=s&aqa=chipset+%22Quad+Xeon%22+pentium+4&aqp=&aqn=&aqb=&aqs=&kl=XX&dt=tmperiod&d2=3&d0=&d1=&rc=rgn&sgr=all&swd=&lh=&sc=on&nbq=10&stq=10 >>>> >>>>and searching on, the intel site , i can conclude that configuration is strange >>>>and unsupported officially by intel processor : >>>> >>>>http://www.intel.com/products/server/processors/server/xeon/index.htm?iid=search+XeonDP >>>>http://www.intel.com/products/server/processors/server/xeon_mp/index.htm?iid=search+XeonMP >>>> >>>>The faster pentium 4 how support 4 way (MP) run at 1.60 Ghz and "with 1 MB of >>>>Level 3 cache is priced at $3,692 in 1,000-unit quantities" >>> >>>this is very old and outdated propaganda. >> >>The quad 2.2 is not "propaganda"... >> >>Check this out: >> >>> *** All four CPUs show up identically; didn't want to use too much bandwidth. *** >>> [root@delta root]# cat /proc/cpuinfo >>> processor : 0 >>> vendor_id : GenuineIntel >>> cpu family : 15 >>> model : 2 >>> model name : Intel(R) XEON(TM) CPU 2.20GHz >>> stepping : 4 >>> cpu MHz : 2199.985 >>> cache size : 512 KB >>> fdiv_bug : no >>> hlt_bug : no >>> f00f_bug : no >>> coma_bug : no >>> fpu : yes >>> fpu_exception : yes >>> cpuid level : 2 >>> wp : yes >>> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm >>> bogomips : 4390.91 >> >>He sent me the raw boot output and it shows up as "eight" cpus because of >>the enabled hyper-threading. And it _definitely_ has 4 xeon cpus. I just >>can't find out where he got the thing. It might be at Intel for all I >>know, in a back room. >> >> >> >> >>> i can show you the >>>AMD press releases of a year or 5 ago announcing a 8 processor K7. >>>I am pretty sure they have tried to build a machine with 8 cpu k7s >>>in order to find out it didn't work and was hard to get to work too, >>>just like they have actually built quad and probably also 8 cpu P4s which >>>simply never ran stable. >>> >>>In short there is always a dude who tries it in order to find out it >>>doesn't work. >>> >>>Best regards, >>>Vincent
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