Re: [Beowulf] Re: amd 3 and 6 core processors

2009-08-20 Thread Jonathan Aquilina
rbw that is actually true 4th quater of this year intel is release its first 8 core with hyperthreading processor to the xenon market. amd currently already has their 6 core out. i understand the reasoning you made about recycling them David, which saves the company money as a whole on manufacturin

Re: [Beowulf] moving of Linux HDD to other node: udev problem at boot

2009-08-20 Thread Mikhail Kuzminsky
In message from Greg Lindahl (Thu, 20 Aug 2009 11:23:25 -0700): On Thu, Aug 20, 2009 at 08:06:07PM +0200, Reuti wrote: AFAIK, initrd (as the kernel itself) is "universal" for EM64T/x86-64, The problem is not the type of CPU, but the chipset (i.e. the necessary kernel module) with which the

Re: [Beowulf] Re: amd 3 and 6 core processors

2009-08-20 Thread richard . walsh
>- Original Message - >From: "David Mathog" >To: beowulf@beowulf.org >Sent: Thursday, August 20, 2009 2:33:38 PM GMT -06:00 US/Canada Central >Subject: [Beowulf] Re: amd 3 and 6 core processors > >Jonathan Aquilina wrote: > >> a friend of mine told me that the amd tri cores we

[Beowulf] Re: moving of Linux HDD to other node: udev problem at boot

2009-08-20 Thread Mikhail Kuzminsky
In message from "David Mathog" (Thu, 20 Aug 2009 11:29:17 -0700): "Mikhail Kuzminsky" wrote: I moved Western Digital SATA HDD w/SuSE 10.3 installed (on dual Barcelona server) to dual Nehalem server (master HDD on Nehalem server) with Supermicro X8DTi mobo. Which means any number of drivers

Re: [Beowulf] amd 3 and 6 core processors

2009-08-20 Thread Bruno Coutinho
Yes. Amd tri-cores were quad cores with a defective core, so they disable the defective core And amd isn't alone. Nvidia Geforce GTX 260s were GTX 280s with disabled stream processors. 2009/8/20 Jonathan Aquilina > a friend of mine told me that the amd tri cores were quads with one core > disba

[Beowulf] Re: amd 3 and 6 core processors

2009-08-20 Thread David Mathog
Jonathan Aquilina wrote: > a friend of mine told me that the amd tri cores were quads with one core > disabled? Probably. It will often be the case that the disabled core is defective, maybe not fully dead, but it did not pass all of its tests. It is common practice to recycle multicore CPUs w

Re: [Beowulf] amd 3 and 6 core processors

2009-08-20 Thread Jonathan Aquilina
a friend of mine told me that the amd tri cores were quads with one core disbaled? On Thu, Aug 20, 2009 at 8:26 PM, Greg Lindahl wrote: > On Thu, Aug 20, 2009 at 06:10:43PM +0200, Jonathan Aquilina wrote: > > > someone brought this up in another post and instead of hyjacking that > post i > > st

[Beowulf] Re:moving of Linux HDD to other node: udev problem at boot

2009-08-20 Thread David Mathog
"Mikhail Kuzminsky" wrote: > I moved Western Digital SATA HDD w/SuSE 10.3 installed (on dual > Barcelona server) to dual Nehalem server (master HDD on Nehalem > server) with Supermicro X8DTi mobo. Which means any number of drivers will have to change. The boot could only succeed if all of the

Re: [Beowulf] amd 3 and 6 core processors

2009-08-20 Thread Greg Lindahl
On Thu, Aug 20, 2009 at 06:10:43PM +0200, Jonathan Aquilina wrote: > someone brought this up in another post and instead of hyjacking that post i > started a new one. what are the advantages of having processors that defy > the normal development and progressions of cores. > > 2 4 8 etc like inte

Re: [Beowulf] moving of Linux HDD to other node: udev problem at boot

2009-08-20 Thread Greg Lindahl
On Thu, Aug 20, 2009 at 08:06:07PM +0200, Reuti wrote: >> AFAIK, initrd (as the kernel itself) is "universal" for EM64T/x86-64, > > The problem is not the type of CPU, but the chipset (i.e. the necessary > kernel module) with which the HDD is accessed. There are 2 aspects to this: 1: /etc/modpr

Re: [Beowulf] moving of Linux HDD to other node: udev problem at boot

2009-08-20 Thread Reuti
Am 20.08.2009 um 19:33 schrieb Mikhail Kuzminsky: In message from Reuti (Thu, 20 Aug 2009 19:02:49 +0200): Am 20.08.2009 um 16:29 schrieb Mikhail Kuzminsky: In message from Reuti (Wed, 19 Aug 2009 21:07:19 +0200): Maybe the disk id is different form the one recored in /etc/ fstab. Wh

Re: [Beowulf] moving of Linux HDD to other node: udev problem at boot

2009-08-20 Thread Reuti
Am 20.08.2009 um 16:29 schrieb Mikhail Kuzminsky: In message from Reuti (Wed, 19 Aug 2009 21:07:19 +0200): Maybe the disk id is different form the one recored in /etc/fstab. What about using plain /dev/sda1 or alike, or mounting by volume label? At the moment of problem /etc/fstab, as

[Beowulf] amd 3 and 6 core processors

2009-08-20 Thread Jonathan Aquilina
someone brought this up in another post and instead of hyjacking that post i started a new one. what are the advantages of having processors that defy the normal development and progressions of cores. 2 4 8 etc like intel follows but amd seems to have done 2 3 4 6 ? what advantage will these kind

[Beowulf] Anybody going with AMD Istanbul 6-core CPU's?

2009-08-20 Thread Steve Cousins
I haven't seen anybody here talking about the 6-core AMD CPU's yet. Is anybody trying these out? Anybody have real-world comparisons (say WRF) of scalability of a 12-core system vs. a 16 thread Nehalem system? Thanks, Steve ___ Beowulf mailing lis

Re: [Beowulf] moving of Linux HDD to other node: udev problem at boot

2009-08-20 Thread Mikhail Kuzminsky
In message from Reuti (Wed, 19 Aug 2009 21:07:19 +0200): Maybe the disk id is different form the one recored in /etc/fstab. What about using plain /dev/sda1 or alike, or mounting by volume label? At the moment of problem /etc/fstab, as I understand, isn't used. And /dev/sda* files are not