Hello sun managers,
Original query:
> Does anyone know how to differentiate the SPARC 10's.
>How does one tell a model 30 from a 40 ? I know how to tell
>if there is a SuperCache or not but ... I have some model 30,
>I switched the jumpers on the main board to tell it to use the
>clock that is on the cpu module instead of the one on the main
>board. HOP !!! It runs as fast as a 40. devinfo returns 40 Mhz.
>Problem is, is it safe ? OS: 4.1.3
Amit Bhatiani bhatiani@jpmorgan.com says:
> try module-info in PROM mode.
This will give you the speed at which your cpu is running.
However, devinfo will also give that information but with a lot more
info on all devices on the system. Further, a model 30 jumped to
use the clock on the cpu module will return 40 MHz like devinfo.
kevin@uniq.com.au (Kevin Sheehan {Consulting Poster Child}) says:
>Doesn't hostid+/usr/include/machine/cpu.h give you the right answer?
>Hostid returns the contents of the id prom, part of which is the one
>byte arch/cpu field.
I did not investigate this possibility because the hostid is
burned into a chip which is not on the cpu module. So if you change
the cpu module this can't reflect the new module because hostid does
not change.
Some people said that the cpu will likely "fry" itself at
that speed. The real question is: "Did Sun always had only one
chip and sold it in two diffenrent format (by only changing the
part number) or is there a real technical difference ???" This might
be only a marketing scheme. So far, no one was able to answer this.
For myself, I have "free upgraded" 3 SPARC 10s model 30
to 40 MHz and they have been running fine for the last two weeks.
The way to tell if your module was intend by Sun to run at
36 or 40 MHz is to look at the part number:
- model 30 = 501-2239
- model 40 = 501-2259 or 501-2353 or 501-2358
In any case, I've been asked to post the jumper settings to
"free upgrade" to a model 40 so here it goes:
If you have the old main board, it looks like that:
( Legend: O means no jumper )
( # means jumper on )
FRONT
+---------------------------------------------------+
| +---------------------+ |
| | SIMM | |
| | Slots | |
| | | |
| | | |
| +---------------------+ |
| |
| |
| |
| |
| |
| J1404 |
| O |
| # |
| # |
| J1401 |
| OO J1403 |
| ##O |
| |
| |
+---------------------------------------------------+
BACK
Basically, remove J1401 and move 1403 and 1404.
===================================================
If you have the more recent main board, it looks like that:
( Legend: O means no jumper )
( # means jumper on )
FRONT
+---------------------------------------------------+
| +---------------------+ |
| | SIMM | |
| | Slots | |
| | | |
| | | |
| +---------------------+ |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| J1401 |
| O## |
| |
| |
| |
+---------------------------------------------------+
BACK
Basically, just move J1401.
Thanks to:
Heas <heas@chpc.org>
Amit Bhatiani bhatiani@jpmorgan.com
tom@yac.llnl.gov
mharris@jpmorgan.com (Michael Harris - Portfolio Analysis)
kevin@uniq.com.au (Kevin Sheehan {Consulting Poster Child})
Craig.Warner@ceram.com (Craig Warner)
Nate Mann AP35-1008 x4774 <ndmann@tacl.dnet.ge.com>
tim@otis.hssc.scarolina.edu (Tim White)
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| Benoit Lefebvre Internet: Benoit.Lefebvre@eng.canadair.ca |
| System Administrator Phone : (514) 744-1511 ext: 6684 |
| Canadair Aerospace Group Fax : (514) 855-7301 |
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