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Re: Need help with lockups on tyan s2460 motherboard in SMP mode

Just a thought
Can you run a small simpe app(like a recursion sum in octave or
something in  that direction) to check if it is only under heavy load
that the system hangs? Even trying to compile one kernel with a nice
value of -17/-18 and check if this also crashes. Hope you solve your

On Tue, 2003-04-22 at 15:40, James D Strandboge wrote:
> I have googled a lot on this issue, but if there is somewhere else I can
> look, please tell me.
> I have a dual AMD 1600+ (MP processors) system with tyan s2460
> motherboard that freezes with no error messages in syslog.  I have read
> (among a lot of other things):
> http://ouray.cudenver.edu/~etumenba/smp-howto/SMP-HOWTO.html
> and what I have done so far is:
> replaced power supply with Enermax 550
> BIOS upgrade to 1.05
> kernels used are 2.4.18 from debian, 2.4.20 and 2.4.21-pre6 
> compiled in acpi (acpi-200303028-2.4.21-pre6)
> compiled out acpi
> compiled with and without Athlon support
> Currently using 2.4.21-pre6 for i386
> booted with combinations of the following:
> noapic
> noacpi
> acpi=off
> nopentium
> tried the following bios settings in various combinations:
> MultiProcessor specification 1.1 and 1.4
> Use PCI Interrupt Entries in MP as yes and no
> enabled/disabled acpi
> enabled/disabled power management
> The only way I have found to reliably crash the system is to compile two
> kernels simultaneously while in smp mode.  If I boot with 'nosmp' the
> system seems ok (still running and compiling after 9 hours).
> Because the system runs ok with one processor, it leads me to think it
> may be kernel code, and not heat or memory related.  Though I guess it
> could be the motherboard still.  Is this a correct assessment?  I'd be
> happy to send any additional information.
> Any and all suggestions are welcome.
> Thanks,
> Jamie Strandboge
> -- 
> Email:        jstrand1@rochester.rr.com
> GPG/PGP ID:   26384A3A
> Fingerprint:  D9FF DF4A 2D46 A353 A289  E8F5 AA75 DCBE 2638 4A3A

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