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RE: Oracle Sun T5120 support getting better in debian 6.0.5 ?

We've got one that we're not using... what would be involved in setting it up for use as a build/porter?

From: Bernd Zeimetz [bernd@bzed.de]
Sent: Tuesday, July 31, 2012 6:30 PM
To: T.J. Yang
Cc: Michel Schanen; debian-sparc@lists.debian.org
Subject: Re: Oracle Sun T5120 support getting better in debian 6.0.5 ?


On 07/13/2012 03:20 PM, T.J. Yang wrote:
> Hi, Michel
> Thanks for sharing your info on running Debian on Sun T5120.  I really
> appreciate this.
> I haven't made the switch yet. I will probably start with running the
> test using LDOM since I don't have a physical T5120 for testing.

the debian project also doesn't have a T5120 or similar machine - would be nice
to have as a buildd/porter box to ensure the sparc port keeps going on. Just in
case somebody has a spare one ;)



> tj
> On Fri, Jul 13, 2012 at 6:48 AM, Michel Schanen
> <michel.schanen@googlemail.com> wrote:
>> Hi,
>> we installed Debian SPARC 6.0.3 on 20 Sun T5120 Enterprise nodes
>> interconnected with infiniband cards and onboard network cards. The
>> infiniband cards are very buggy and only work over IP. Problem is that there
>> are no supported infiniband drivers for Linux/SPARC.
>> I recommend the Debian installation guide for SPARCs. We used the TFTP
>> method, which worked fairly well. We ran into the same trouble as you when
>> connecting a CDROM drive.
>> http://www.debian.org/releases/stable/sparc/ch04s03.html.en
>> Only trick was that the image had to be named after the IP of the
>> installation target, e.g. -> C0.A8.00.02
>> We received these cluster nodes at no costs and we use them essentially for
>> simulation codes/testing. As the tools are all SPARC and not SPARC64 we had
>> some problems using OpenMP. For instance the atomic statement was very slow.
>> After compiling gcc with arch=SPARC64 we had a considerable performance
>> boost using OpenMP. In the end, all our development tools are now recompiled
>> with arch=SPARC64.
>> Other than that, everything works flawlessly! NFS crashes after some weeks
>> of uptime. Therefore we do a weekly reboot.
>> You will be able to log in to the ILOM SPs over SSH and eventually to your
>> system console.
>> Oh and don't forget to recompile your kernel with 64 CPU support. Otherwise
>> you will be stuck with 32 or something.
>> Michel

 Bernd Zeimetz                            Debian GNU/Linux Developer
 http://bzed.de                                http://www.debian.org
 GPG Fingerprint: ECA1 E3F2 8E11 2432 D485  DD95 EB36 171A 6FF9 435F

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