Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!uflorida!gatech!hubcap!mark
From: mark@hubcap.UUCP (Mark Smotherman)
Newsgroups: comp.arch
Subject: Re: Definition of Fault Tolerant Architectures
Summary: short definitions
Keywords: fault tolerant
Message-ID: <2656@hubcap.UUCP>
Date: 15 Aug 88 18:04:58 GMT
References: <433@otc.oz>
Organization: Clemson University, Clemson, SC
Lines: 23

In article <433@otc.oz>, ronb@otc.oz (Ron Barrett) writes:
> I'm looking for CONCISE definitions of the following Fault Tolerant 
> architectures.
>     1) tightly coupled.

		shared memory, lockstep operation from one clock
		(e.g. FTMP, STAR)

      1A) closely coupled

		shared memory, separate clocks
		(e.g. SIFT, C.mmp)

>   & 2) loosely coupled.

		separate memories, separate clocks
		(e.g. AIPS, ESS)

(Can't find the reference for these distinctions, probably Avizienis or
Siewiorek)
-- 
Mark Smotherman, Comp. Sci. Dept., Clemson University, Clemson, SC 29634
INTERNET: mark@hubcap.clemson.edu    UUCP: gatech!hubcap!mark