SUMMARY: Dual SuperSPARC upgrade question

From: Nick Murray (nick@computing-science.aberdeen.ac.uk)
Date: Fri May 21 1993 - 13:05:32 CDT


The original question :

> Hi,
> We've currently got a dual-processor 4/670 MP, with 128 Mb memory,
> running 4.1.2 which we're looking at upgrading.
>
> The most likely option is to install 2 SM41 SPARC Modules with SuperCache.
>
> The problem is that the machine really needs the upgrade now (it is struggling
> under a load of 20+ PC's and 20+ X terminals) but we have students running
> applications that won't run under Solaris 2. These students will be finishing
> in September, so we can't upgrade to Solaris 2 until then.
>
> I know the official Sun line is that you need Solaris 2.2 for this setup, but
> is anyone using SunOS 4.1.3 on a similar dual processor configuration?

 Almost half the respondants said they were using two SM41 modules under
SunOS 4.1.3 and were happy with the set-up. Some stated that their machines
seemed more reliable than when using the ROSS modules.

Most of the other respondants suggested sticking with one SM41 module now
(which would still give a very significant performance increase) and add the
second one when we can upgrade to Solaris 2.

Hal Stern suggested upgrading to the 50Mhz module (135 MIPS). However there is a
question of delivery time for these modules in the UK, and we have to have the
upgrade in place by July.

Thanks to:
==========
aluxpo!nlf (Nelson Fernandez)
leg@gov.inel (Lance Eric Greenwade)
Dan Lorenzini <dal@com.gcm>
Christian Lawrence <cal@com.bellcore.soac>
dan@com.bellcore (Daniel Strick)
canuck@edu.rice.masc38 (Mike Pearlman)
lscpdx!nate@COM.Sun.West.nosun (Nate Nicholson)
Ron Phelan <rjp@au.edu.deakin>
John DiMarco <jdd@edu.toronto.db>
lscpdx!jayl@COM.Sun.West.nosun (Jay Lessert)
stern@COM.Sun.East.sunne (Hal Stern - NE Area Systems Engineer)
Birger.Wathne@no.sdata.vest (Birger A. Wathne)
Anthony.Worrall@uk.ac.reading (Anthony Worrall)
matt@com.xerox.wbst845e (Matt Goheen)
David Comay <dsc@GOV.CSS.seismo>



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