SMP

SMP

[Guillaume Laurhs]

Hello 2 All,

I recently bought a Daystar nPower card to bless an old 9500/132 (it's
now a bi-180). I successfully compiled on it an smp kernel.org 2.2.16
kernel on it, and it works flawlessly... but with only one cpu...

pm9500:~# cat /proc/version
Linux version 2.2.16 (root@pm9500) (gcc version 2.95.2 20000313 (Debian
GNU/Linux)) #2 SMP Mon Jun 12 16:59:05 CEST 2000

pm9500:~# cat /proc/cpuinfo
processor       : 0
cpu             : 604e
clock           : 180MHz
revision        : 2.2
bogomips        : 358.81

total bogomips  : 358.81
zero pages      : total 0 (0Kb) current: 0 (0Kb) hits: 0/145 (0%)
machine         : Power Macintosh
motherboard     : AAPL,9500 MacRISC
L2 cache        : 512K unified
memory          : 64MB

I know that smp in an unsupported feature, but would somebody help
me/provide me links or people to activate it ??

Thanks,

GoM

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Re: SMP

[Charles E Leiserson Jr]

You can get a working SMP kernel at ftp://borg.mit.edu/pub/linux/linuxppc/kerne
ls/multiprocessor/ with all of its support files.  It's a bit old (2.2.12),
but it works.


					- Ricky


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Re: SMP

[Andrew Weiss]

Weren't those cards the only working example of assymetric
multi-processing?.  Would an SMP kernel actually drive them properly?

Andrew
----------------------------------------------------------------------------
--
Big Endian Girls make the RISCen world go round
----- Original Message -----
From: "Charles E Leiserson Jr" <locutus@MIT.EDU>
To: <guillaume.laures@noos.fr>
Cc: <linuxppc-dev@lists.linuxppc.org>; <locutus@MIT.EDU>
Sent: Monday, June 12, 2000 2:12 PM
Subject: Re: SMP


>
> You can get a working SMP kernel at
ftp://borg.mit.edu/pub/linux/linuxppc/kerne
> ls/multiprocessor/ with all of its support files.  It's a bit old
(2.2.12),
> but it works.
>
>
> - Ricky
>
>
>


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Re: SMP

[Karl-Heinz Krempels]

Hi *,

yeah it works on a UMAX S900, but without USB.

Charlie.

Karl-Heinz Krempels, Vereinsstrasse 13-15, 52062 Aachen, +49-241-4093691
Aachen University of Technology , charlie@pool.informatik.rwth-aachen.de
- In a world without walls and fences,
  what should we do with windows and gates?

On Mon, 12 Jun 2000, Andrew Weiss wrote:

>
> Weren't those cards the only working example of assymetric
> multi-processing?.  Would an SMP kernel actually drive them properly?
>
> Andrew
> ----------------------------------------------------------------------------
> --
> Big Endian Girls make the RISCen world go round
> ----- Original Message -----
> From: "Charles E Leiserson Jr" <locutus@MIT.EDU>
> To: <guillaume.laures@noos.fr>
> Cc: <linuxppc-dev@lists.linuxppc.org>; <locutus@MIT.EDU>
> Sent: Monday, June 12, 2000 2:12 PM
> Subject: Re: SMP
>
>
> >
> > You can get a working SMP kernel at
> ftp://borg.mit.edu/pub/linux/linuxppc/kerne
> > ls/multiprocessor/ with all of its support files.  It's a bit old
> (2.2.12),
> > but it works.
> >
> >
> > - Ricky
> >
> >
> >
>
>
>
>


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Re: SMP

[Guillaume Laurhs]

Charles E Leiserson Jr a *crit :

> You can get a working SMP kernel at ftp://borg.mit.edu/pub/linux/linuxppc/kerne
> ls/multiprocessor/ with all of its support files.  It's a bit old (2.2.12),
> but it works.

Unfortunately, it doesn't work. BootX 1.2.2 shows up only one penguin, and I get
the same /proc/cpuinfo.
I realized that I have this oddity in dmesg :

Entering SMP Mode...
Processor 1 is stuck.

On 2.2.16 it's the same (dmesg from the begining) :

device tree used 31392 bytes
Total memory = 64MB; using 256kB for hash table (at c0240000)
Linux version 2.2.16 (root@pm9500) (gcc version 2.95.2 20000313 (Debian
GNU/Linux)) #2 SMP Mon Jun 12 16:59:05 CEST 2000
PCI bus 0 controlled by bandit at f2000000
Cache coherency enabled for bandit/PSX at f2000000
PCI bus 1 controlled by bandit at f4000000
Cache coherency enabled for bandit/PSX at f4000000
System has 32 possible interrupts
via_calibrate_decr: decrementer_count = 112500 (675003 ticks)
Console: colour dummy device 80x25
Calibrating delay loop... 358.81 BogoMIPS
Memory: 62364k available (1228k kernel code, 1848k data, 96k init) [c0000000,c40
00000]
Dentry hash table entries: 8192 (order 4, 64k)
Buffer cache hash table entries: 65536 (order 6, 256k)
Page cache hash table entries: 16384 (order 4, 64k)
POSIX conformance testing by UNIFIX
Entering SMP Mode...
Processor 1 is stuck.            <--------------------
PCI: Probing PCI hardware...

It sounds like the second processor cannot be correctly started...

I tried with an older bootX (1.1.3) it's the same. For now, I can't quik, I think
Darwin messes up quik (it's installed on a partition before linux).

The cards work well under MacOS, distributed.net client makes a full use of both
processors (which brings the 9500 a bit higher than a G3@333, but still 3,5 times
lower than a G4@450..., always accordingto dnet's client)


Any though about this ? Any way to debug ??

Thanks,

GoM


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Re: SMP

[Charles E Leiserson Jr]

> Unfortunately, it doesn't work. BootX 1.2.2 shows up only one penguin, and I get
> the same /proc/cpuinfo.
> I realized that I have this oddity in dmesg :
>
> Entering SMP Mode...
> Processor 1 is stuck.

Ah, this problem.  I had it too with my nPower400.  I got rid of it by shutting down completely, and starting up again (into Linux).  I haven't had that problem since, at least with my kernel...


					- Ricky


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