Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!amdahl!mat
From: mat@amdahl.uts.amdahl.com (Mike Taylor)
Newsgroups: comp.arch
Subject: Re: SPARC and multiprocessing
Message-ID: <30313@amdahl.uts.amdahl.com>
Date: 29 Apr 88 21:49:55 GMT
References: <1521@pt.cs.cmu.edu> <28200135@urbsdc> <4921@bloom-beacon.MIT.EDU> <1671@alliant.Alliant.COM>
Organization: Amdahl Corporation, Sunnyvale CA
Lines: 16

In article <1671@alliant.Alliant.COM>, jeff@Alliant.COM (Jeff Collins) writes:
> 
> 	Here's an interesting question for the SPARC guru's of the world:
> 
> 	Given that the SPARC must use a virtual cache to get optimal
> 	performance, how does one build a multiprocessor with a SPARC?
> 
> 	As far as I know, no one has solved the virtual cache coherency
> 	problem yet...
> 

Amdahl machines starting with the 580 series in 1982 have used a coherent
virtual cache.
-- 
Mike Taylor                        ...!{ihnp4,hplabs,amdcad,sun}!amdahl!mat

[ This may not reflect my opinion, let alone anyone else's.  ]