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Date:      Thu, 30 Mar 2000 15:09:12 +0200 (CEST)
From:      "O. Hartmann" <ohartman@ipamzlx.physik.uni-mainz.de>
To:        freebsd-smp@freebsd.org
Subject:   SMP problems with ALR Q-SMP
Message-ID:  <Pine.BSF.4.10.10003301458020.14969-100000@ipamzlx.physik.uni-mainz.de>

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Dear Sirs.
I posted weeks ago about problems with a Siemens Nixdorf PCE-5Smp
system. Well, we had problems to discover CPU configuration data
needed for building a functioning SMP kernel and we got only HOSED
entries.

After a little search I found out that this system is originally an
older ALR Revolution Q-SMP server. I got a new BIOS image and after
applying this, I got "good" results with "mptable". I applyed the suggested
entries for a custom SMP kernel, NCPU=3, NBUS=2 (EISA/PCI), NAPIC=1,NINTR=24.
We have had some little problems with a "shot" EISA configuration and 
IRQ assignments. After obviously solving this, we compiled a new SMP kernel
with the suggested options, but after rebooting and starting this kernel,
the system crashes. Last message is some kind of this:

AP#1 PHY#1 connot start (or similar). I do not have the whole message
in mind. But it seems that the kernel can not start the next slave CPU.
Single CPU kernel runs well!

The machine is equipted with the following hardware: ALRa341 base board
plus additional I/O and controller board (containing some kind of base glue 
logic and BIOS), SLOT backplane,memory card and three 100 MHz Pentium CPUs.

So, reading the hardware manual says, that each CPU board comes with its
own APIC. But as I understand this, it is only necessary to use one APIC
to get the system running. I never tried NAPIC=3 because I should increase
NINTR=XX upd to another value higher than 24, shouldn't I? Has anyone
any suggestions? Is someone out here who has already configured an running
an ALR Revolution Q-SMP under FreeBSD 4.0-STABLE? Ir would be nice if we can
obtain some hints an tips ...

Kind regards and thanks in advance,

Gruss O. Hartmann
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