Advice on Cluster Hardware.
Alcino Dall Igna Junior
alcino at lncc.br
Wed Feb 6 07:34:52 EST 2002
Problably a silly sugestion, but you are using a proper
cable to connect the HD?
On Wed, 6 Feb 2002, Nirmal Bissonauth wrote:
> Hi All,
> I have 6 Tyan Thunder K7 motherboards (Dual 1.2 GHz Athlon MP) in my
> cluster. I am using Redhat7.2, kernel 2.4.9-13smp. The problem I get is
> with the E-IDE driver. It does not correctly initialise the AMD7411 IDE
> controller and thus it can't go any faster than UDMA33 with the IDE hard
> drives. You may have the same problem with the Tyan Tiger MP.
> Here are the kernel messages during boot up. I can use the override
> parameters idebus=66, but I can't confirm that it actually makes it go any
> faster. The hard drive is capable of UDMA 100 by the way.
> Uniform Multi-Platform E-IDE driver Revision: 6.31
> ide: Assuming 33MHz PCI bus speed for PIO modes; override with idebus=xx
> AMD7411: IDE controller on PCI bus 00 dev 39
> AMD7411: chipset revision 1
> AMD7411: not 100% native mode: will probe irqs later
> AMD7411: disabling single-word DMA support (revision < C4)
> ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:pio
> ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:pio, hdd:pio
> hda: IC35L040AVER07-0, ATA DISK drive
> ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> hda: 80418240 sectors (41174 MB) w/1916KiB Cache, CHS=79780/16/63,
> Nirmal Bissonauth
> On Tue, 5 Feb 2002, Alberto Ramos wrote:
> > Here in a university of Madrid, we are designing a Beowulf for paralel
> > computing in QCD. We will begin with a small cluster to see the performance
> > and later try with other comunications, like mirynet.
> > The Hardware will be 4 nodes each consisting of:
> > - 2xAMD MP 1800+ CPU
> > - 1x512MB RAM DDR
> > - 1xTyan tiger MP
> > - 2x3-COM 905B NIC
> > - 20GB HD
> > The master node has 1GB of RAM DDR, and one aditional HD to use as /home.
> > The conection will be trought a HP Procurve Switch 408 with 8 ports to use
> > Chanel Bonding.
> > Now the questions:
> > - Any known problems with the hardware?
> > - Are the NIC and the Switch good choices?
> > - Will the Intel FORTRAN 90 Compiler work with this hardware.
> > Thank you very much for your time.
> > Alberto.
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