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Lupin_the_3rd
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PostPosted: Thu Jan 05, 2006 11:59 pm    Post subject: SS20 support? Reply with quote

I'm a SPARC newbie. What's the state of Gentoo on an SS20? Mine is a quad 125Mhz CPU model (2x dual Ross 125's) with 448MB RAM, CDROM, and a couple of SCSI/Ethernet combo cards installed.

It currently has no OS loaded and I'm wondering whether to load Solaris 9 or go with Linux....
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starrbuck
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PostPosted: Sat Jan 07, 2006 5:05 am    Post subject: Reply with quote

I'm running the experimental sparc32 build on an SS20 with no issues.
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tunkaflux
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PostPosted: Sat Jan 07, 2006 12:52 pm    Post subject: Reply with quote

If those are HyperSparc's, well, it's a no go. If it's anything else (MicroSparc, SuperSparc, ...), it'll work.
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Lupin_the_3rd
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PostPosted: Sat Jan 14, 2006 5:56 am    Post subject: Reply with quote

tunkaflux wrote:
If those are HyperSparc's, well, it's a no go. If it's anything else (MicroSparc, SuperSparc, ...), it'll work.


It's a quad cpu box with two dual-125 modules from Ross. These are hypersparc's, no? I guess it's a no go for me.
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32bit PCI: Generic Firewire 400 card
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Weeve
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PostPosted: Sun Jan 15, 2006 4:35 am    Post subject: Reply with quote

Hypersparcs do work, however SMP is highly buggy. I run a dual 125 box with a non-SMP kernel and it works as fine as 2.4 or 2.6 does for sparc32.
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verruckt
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PostPosted: Tue Feb 07, 2006 2:20 am    Post subject: Reply with quote

Is 32bit smp dead as far as Gentoo goes??? 8O
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Weeve
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PostPosted: Tue Feb 07, 2006 5:25 pm    Post subject: Reply with quote

The SMP issues are really a kernel issue, not a particular Linux distribution issue. As such, our "support" for SMP is dictated by that.
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starrbuck
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PostPosted: Fri Mar 24, 2006 6:37 pm    Post subject: Reply with quote

I'm running 2.4 SMP on a dual-CPU SS20 with no issues.
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tunkaflux
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PostPosted: Fri Mar 24, 2006 8:18 pm    Post subject: Reply with quote

Quote:
Hypersparcs do work, however SMP is highly buggy. I run a dual 125 box with a non-SMP kernel and it works as fine as 2.4 or 2.6 does for sparc32.


Weeve, anything special you had to do for 2.6 to work stable?

Quote:
I'm running 2.4 SMP on a dual-CPU SS20 with no issues.


I'm guessing they are not HyperSPARC CPU's :)
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starrbuck
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PostPosted: Fri Mar 24, 2006 9:03 pm    Post subject: Reply with quote

Correct, looks like they are SuperSparc IIs...

Code:
$ cat /proc/cpuinfo
cpu             : Texas Instruments, Inc. - SuperSparc-(II)
fpu             : SuperSparc on-chip FPU
promlib         : Version 3 Revision 2
prom            : 2.15
type            : sun4m
ncpus probed    : 2
ncpus active    : 2
Cpu0Bogo        : 59.80
Cpu1Bogo        : 59.80
MMU type        : TI Viking/MXCC
contexts        : 65536
nocache total   : 3145728
nocache used    : 620032
CPU0            : online
CPU1            : online

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nl0pvm
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PostPosted: Sat Mar 25, 2006 2:34 pm    Post subject: Reply with quote

At least I'm running _ThA ReAl_ (old fashioned) hypersparcs with a 2.4.x SMP kernel :)

Code:
bruce / # cat /proc/cpuinfo
cpu             : Texas Instruments, Inc. - MicroSparc
fpu             : SuperSparc on-chip FPU
promlib         : Version 3 Revision 2
prom            : 2.22
type            : sun4m
ncpus probed    : 2
ncpus active    : 2
Cpu0Bogo        : 40.14
Cpu1Bogo        : 40.24
MMU type        : TI Viking/MXCC
contexts        : 65536
nocache total   : 5242880
nocache used    : 469760
CPU0            : online
CPU1            : online

bruce / # uname -a
Linux bruce 2.4.30 #3 SMP Wed Jun 1 11:20:05 CEST 2005 sparc sun4m Texas Instruments, Inc. - MicroSparc GNU/Linux

bruce / # cat /proc/openprom/model
'SUNW,S20,501-2365'

bruce / # cat /proc/openprom/banner-name
'SPARCstation 20 MP (2 X 390Z55)'

bruce / # cat /proc/openprom/name
'SUNW,SPARCstation-20L'


It only has one issue... when copying between its two SCSI disks 2 or more very large files (300MB+) at the same time.... it just "stops" only a power-reset helps...... but its seems like this is the SCSI driver, card, cable, termination, disks - chain that is having issues... As running at very high loads doesn't hurt little bruce ;)

But getting it this far was quite a hell as i'd to try different 2.4.x kernels until this one was able to start both processors.. instead of starting one and crashing while starting the second... or panic-ing while booting etc....

And i agree with weeve on this:
Quote:
Hypersparcs do work, however SMP is highly buggy. I run a dual 125 box with a non-SMP kernel and it works as fine as 2.4 or 2.6 does for sparc32.

As my two e250's can run (2.6.x) at high loads as well but a lot of disk activity kills them (happened only 3 times for each box in its complete gentoo life of little over 1 year)
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SUN E250 2 x UltrasparcII@400Mhz 512MB RAM 6 x 9GB Kernel 2.6.8 (SMP)
SUN E250 UltrasparcII@400Mhz 512MB RAM 2 x 9GB Kernel 2.6.11
SUN E250 UltrasparcII@400Mhz 1024MB RAM 2 x 9GB
SPARCstation 10 MP 2 x 390Z55@40Mhz 512MB RAM Kernel 2.4.30 4GB & 9GB
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Weeve
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PostPosted: Thu Mar 30, 2006 12:32 am    Post subject: Reply with quote

tunkaflux wrote:
Quote:
Hypersparcs do work, however SMP is highly buggy. I run a dual 125 box with a non-SMP kernel and it works as fine as 2.4 or 2.6 does for sparc32.


Weeve, anything special you had to do for 2.6 to work stable?


Only real trick was getting the kernel small enough. If you use the new 2006.0 profiles with gcc-3.4.x, that should be a little easier as the compiled code is typically smaller in size than with gcc-3.3.x

tunkaflux wrote:
Quote:
I'm running 2.4 SMP on a dual-CPU SS20 with no issues.


I'm guessing they are not HyperSPARC CPU's :)


I've got two different SS20s, one with dual HyperSPARCs (ROSS 125 MHz) and dual SuperSPARCs (75MHz).
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