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Path: utzoo!mnetor!uunet!mcvax!enea!ttds!rajaei
From: rajaei@ttds.UUCP (Hassan Rajaei)
Newsgroups: comp.arch,comp.dcom.lans
Subject: Re: Time synchronization in a Distributed Environment
Message-ID: <1155@ttds.UUCP>
Date: 4 Mar 88 16:58:58 GMT
References: <druhi.2710> <1571@ogcvax.UUCP>
Reply-To: rajaei@ttds.UUCP (Hassan Rajaei)
Organization: The Royal Inst. of Techn., Stockholm
Lines: 34

In article <1571@ogcvax.UUCP> pase@ogcvax.UUCP (Douglas M. Pase) writes:
>In article <druhi.2710> aws@druhi.ATT.COM (SteereA) writes:
>>Hi,
>>  I am looking for articles, references, implementations,
>>etc. for solving the problem of keeping N machines within
>>a specified time of one another.  I appreciate any and all
>>pointers.
>>
>
>This article may be of some use to you
>
>%A Leslie Lamport
>%T Time, Clocks, and the Ordering of Events in a Distributed System
>%J Communications of the ACM
>%V 21
>%N 7
>%P 558-565
>%D July 1978
>%K lam78

The Virtual Time theory and its implementaion Time Warp mechanism may
help as well. There is a good article on the subject:

Virtual Time, David Jefferson, ACM Trans. on Prog. Lang. & Syst.,
Vol. 7, No3, July 1985 pp 404-425

There is a Time Warp Operating System (TWOS) on Caltech Mark III Hypercube
which implements the TW mechanism. You may find the article in :
ACM Operating System Review, vol. 21, No. 5, pp 77-93, "Distributed Simulation
and the Time Warp Operating System", D. Jefferson et al.


Hassan Rajaei
rajaei@ttds.tds.kth.se