Advice on Cluster Hardware.

[Mark Hahn]

> Tyan Tiger MP has this same issue.  On a dual-boot machine with RH7.2
> and Win2K I cannot get Hdparm to sustain above 24MB/sec but in WIN2K the
> drive can sustain 46MB/sec.  Same ide error upon linux initialization.
> Very frustrating.

have you tried the obvious fix, that is, to run a modern kernel
(2.4.17 or even the current pre-18)?


> 
> Regards,
> 
> Phil Matz
> 
> -----Original Message-----
> From: beowulf-admin at beowulf.org [mailto:beowulf-admin at beowulf.org] On
> Behalf Of Nirmal Bissonauth
> Sent: Wednesday, February 06, 2002 2:25 AM
> To: Alberto Ramos
> Cc: Lista de correo sobre Beowulf
> Subject: Re: Advice on Cluster Hardware.
> 
> 
> 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,
> UDMA(33)
> 
> 
> Regards  
> 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.
> >   
> > _______________________________________________
> > Beowulf mailing list, Beowulf at beowulf.org
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> > http://www.beowulf.org/mailman/listinfo/beowulf
> > 
> 
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-- 
operator may differ from spokesperson.	            hahn at coffee.mcmaster.ca
                                              http://java.mcmaster.ca/~hahn