-----Original Message-----
From: AHM2003 - CyberChair [mailto:anna@nesc.ac.uk] 
Sent: 06 June 2003 18:49
To: a.djaoui@rl.ac.uk
Cc: r.perrott@qub.ac.uk; anna@nesc.ac.uk
Subject: AHM2003 Abstract Submission Form Feedback

Dear Abdeslem, 

You have submitted the following data for the AHM2003 Conference:

-=-=-=-=-= Beginning of submission data (step 1)=-=-=-=-=-


Contact Person: 
	Name: Abdeslem Djaoui
	Address:
		CLRC
		Rutherford Appleton Laboratory
		Chilton
		Didcot
		OX11 oQX
	Phone: 01235 445481
	Fax: 01235 446733
	Email: a.djaoui@rl.ac.uk

Title: Evolution of R-GMA  into the OGSA framework

Author 1:
	Name: Abdeslem Djaoui
	Affiliation: CLRC/RAL

Author is PC Member: No

Main Fields:
	1. Middleware


Abstract:
The Relational Grid Monitoring Architecture (R-GMA) is a system for
information and monitoring in a Grid environment. It exposes multiple
information producers as a virtual distributed RDBMS. It also allows complex
queries to be formulated, including joins, by exploiting the power of the
SQL
query language.  

The current implementation uses servlet technology for managing instances of

producers and consumers. Communication requests and responses are handled in
a
non-standard way. Even partial inter-working with other systems such as the
Monitoring and Discovery Service (MDS) of the Globus toolkit is complicated
due to their use of different data models and different protocols.
  
The Open Grid Services Architecture (OGSA) has opened up new opportunities
for
seamlessly integrating different information and monitoring systems with
different capabilities in a grid environment. Now that OGSA is maturing with
version 1.0 of the specification nearing its final release, we feel the time
is right to start moving towards standard mechanisms to permit us to achieve
the same functionality as the servlet based implementation does.  Using OGSA
factories for creating instances instead of servlets has the added advantage
of much easier lifetime management,  identity tracking and state management.
Compliance with OGSA will make inter-working with other OGSA-compliant
systems
simple, as a result of a shared message format and communication protocol.  

R-GMA will provide input for the Grid Monitoring Architecture (GMA)
standardisation effort being planned by the Global Grid Forum (GGF). Future
standards on GMA interfaces will allow R-GMA to interoperate with all other
GMA-based systems in the Grid. R-GMA will also use GGF-standards based
products where appropriate - such as the use of OGSA-DAI for data storage
and
query, and security services for authentication and authorisation.

The details of how an existing R-GMA component is re-engineered to make it
OGSA-compliant and backward compatible will be given. 

Keywords: R-GMA Information Monitoring OGSA GMA Relational


Remarks:
Authors
-------


Andrew Cooke
Werner Nutt
    Heriot-Watt, Edinburgh, UK


James Magowan
Paul Taylor
    IBM UK Ltd.


Jason Leake
    Objective Engineering Ltd.


Rob Byrom
Laurence Field
Steve Hicks
Manish Soni
Antony Wilson
    PPARC, UK


Roney Cordenonsi
    Queen Mary, University of London, UK


Linda Cornwall
Abdeslem Djaoui
Steve Fisher
    Rutherford Appleton Laboratory, UK


Norbert Podhorszki
    SZTAKI, Hungary


Brian Coghlan
Stuart Kenny
David OCallaghan
John Ryan
    Trinity College Dublin, Ireland



-=-=-=-=-=-= End of abstract submission data =-=-=-=-=-=-


IMPORTANT: To submit your paper you should revisit the
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step 2 and at the appropriate places fill in the following:

Login: a.djaoui@rl.ac.uk
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If you have questions about this message, please contact Anna Kenway
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