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Details of Grant 

EPSRC Reference: GR/M74931/01
Title: COLLECTING DISTRIBUTED GARBAGE USING THE DMOS FAMILY OF ALGORITHMS
Principal Investigator: Morrison, Professor R
Other Investigators:
Balasubramaniam, Dr D Kirby, Dr G
Researcher Co-Investigators:
Project Partners:
Department: Computer Science
Organisation: University of St Andrews
Scheme: Standard Research (Pre-FEC)
Starts: 01 October 1999 Ends: 30 June 2003 Value (£): 207,015
EPSRC Research Topic Classifications:
Networks & Distributed Systems
EPSRC Industrial Sector Classifications:
Communications No relevance to Underpinning Sectors
Related Grants:
Panel History:  
Summary on Grant Application Form
The DMOS algorithm provides a unique combination of desirable properties for a distributed collector that avoids global tracing; specifically, DMOS is safe, complete, non-disruptive, incremental, local, independent, decentralised, and asynchronous. It thus has the prerequisites for scalability of incrementality, locality, decentralisation, and asynchrony.The DMOS algorithm decomposes into three components: A distributed termination algorithm that detect absence. A local collector that maintains cars and trains, using the DMOS reassociation rules in conjunction with the above distributed termination algorithm. A second distributed termination algorithm that detects empty train.Our aim is to understand, implement, and measure a family of DMOS implementations that vary in the two distributed termination algorithms and the local collector. Such variations may be targeted towards intrinsic properties such as faulty tolerance, persistence, efficiency and object migration. This will allow different implementations of DMOS to be tailored to a specific environment such as a high-performance multi-computer or a loosely coupled set of distributed sites.
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Organisation Website: http://www.st-and.ac.uk