[SunHELP] How to tell if Sombra CPU's are installed?

[DAUBIGNE Sebastien - BOR ( SDaubigne@bordeaux-bersol.sema.slb.com )]

The only significant changes in system configuration of our E6500 were the
following lines, added by Sun in /etc/system after replacing the old CPUs
with Sombra CPUs :

*START OF MIRRORED SET STATEMENTS
set ecache_calls_a_sec=1
set ecache_scan_rate=1
set ecache_is_mirrored=1
*END OF MIRRORED SET STATEMENTS

But, yes it does not prove that Sombra CPUs are in the box :-)

Also note that the last value is not recognized by Solaris 2.6 kernel, as
the following message is displayed at boot time :

"sorry, variable 'ecache_is_mirrored' is not defined in the 'kernel'".

Even the CPU version displayed during POST did not change :

"CPU mid 1 Version=00170011.a0000507"

---
Sebastien DAUBIGNE
sebastien.daubigne at sema.fr <mailto:sebastien.daubigne at sema.fr>  - (+33)
(0)5.57.26.56.36
Sema Global Services - AFM/DW/Pessac

	-----Message d'origine-----
	De:	Dale Ghent [SMTP:daleg at elemental.org]
	Date:	vendredi 8 mars 2002 05:46
	@:	sunhelp at sunhelp.org
	Objet:	Re: [SunHELP] How to tell if Sombra CPU's are installed?

	On Thu, 7 Mar 2002 echase at postoffice.providence.edu wrote:

	| I'm far from an expert on Sun hardware, but what the heck is a
Sombra CPU
	| versus a "regular" CPU?

	Sombra CPUs are the UltraSPARC-II CPUs Sun produced for the x500
series of
	servers to combat the infamous e-cache parity errors that plague us2
CPUs
	that run above 400Mhz with certain e-cache SRAM chips.

	These CPUs have mirrored e-cache, and are actually supplied on a
whole
	x500 CPU/Memory board... that's how you get it from Sun... no
	removing/adding them to existing CPU/Mem boards.

	There's no way I'm aware of to identify them on a system from the OS
	(short of pulling out the board itself and looking at it.) It does
require
	OBP version of at least 3.2.28, so that's the only almost-uncertain
thing
	you could go on.

	/dale
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