OGSA-DAI Status Report
Neil P Chue Hong
20th May 2005
1
Summary
Software and Support
Applications and Collaborations
Dissemination and Training
Workplan and Roadmap
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OGSA-DAI Release 6
A release to consolidate multiple platforms
– Released on May 19th 2005
Features:
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New Client Toolkit which provides abstractions across flavours
Renaming (consistent naming across platform versions)
Ability to enforce control flow constraints (ordering activities)
Refactored Exception Framework
Service Configuration
Improvements to installers
Extend test framework to multi-platform tests
Updated documentation structure to reflect flavours
OGSA-DAI [OGSI-6.0 | WSI-1.0 | WSRF-1.0]
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OGSA-DAI Downloads R5
OGSA-DAI R5.0 downloads
790 downloads since Dec 04
Austria
1%
Others
20%
China
40%
France
3%
-Actual user downloads not search
engine crawlers
-Does not include downloads as
part of GT3.2 and GT4 releases
Total of 1212 registered users
Italy
2%
Japan
5%
Germany
3%
United States
11%
United Kingdom
15%
Significant interest from China
- two members of staff starting May 22nd
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R1.0 (Jan 03)
R1.5 (Feb 03)
R2.0 (Apr 03)
R2.5 (Jun 03)
R3.0 (Jul 03)
R3.1 (Feb 04)
R4.0 (May 04)
Total
109
110
255
294
792
686
1083
4119
at 17/5/2005
Queries
 67 queries received between 1/2/2005 and 30/04/2005.
– 22.3 queries/month (previous quarter was 18.3 queries/month)
– Time to resolution 3.3 days (was 8.3 days last quarter)
 Grid Support Centre effort finished on 30/9/2004
– now spending approximately 10.5 staff days effort a month within
developer team
Category
Queries
Release
Queries
Install / Configure
20
Pre R4.0
0
Usage
23
R4.x
14
Documentation
0
R5.x
17
Website
0
DQP2.0
9
DQP
10
WSRF/WSI preview
3
General
14
Not specified/applic
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7
OMII_2 Release
 50 downloads of OMII versions from website so far (pre
Release 6)
 OGSA-DAI WSI-1.0 will get a customised OMII bundle
– there have been some issues as OMII1_2 and OGSA-DAI R6 use
different versions of Axis
– this should be resolved in the OMII2_0 release
– the same feature set as the GT4 version
 Still want to use GRIMOIRES registry
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To explore its use for data resource & services
Registering service functionality
Registering data content
To avoid doing our own from scratch
Expecting to use WS-Addressing for R7 on
OMII_2_x
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GT4 WS-RF Release
Moving from contributed component to core
component in Globus Toolkit 4.0
– Released service only release with GT4.0
– Releasing full OGSA-DAI WSRF-1.0 package with GT4.0.1
Almost all features from OGSA-DAI OGSI r6.0
for GT4.0.1
– registry not being actively developed (awaiting alternatives)
– no factory, making concurrency more difficult (to be fixed in
R7)
– security: switch from MLS to TLS in GT4
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Applications and Collaborations
caBIG
– collaboration continues
– have also made contact with Peter Maccallum of UK
CancerGrid project
NGS
– working with Matt Ford to understand how to promote Data
Services on the NGS
– ConvertGrid the first project using OGSA-DAI on NGS
Exploring other opportunities
– EDINA, map services
– Reading eScience Centre, Met Office data
– Sybase, support for new databases
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Training and Dissemination
 Tutorials:
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GlobusWorld, Boston
GGF13, Seoul
UK Globus Week, NeSC
Forthcoming International Grid Summer School, Vico Equense
 Many presentations including:
– PRISM
– Introduction to the NGS
– PPARC eScience Postgraduate School
 Papers:
– “The design and implementation of Grid database services in OGSA-DAI “,
Concurrency and Computation: Practice and Experience, Volume 17, Issue 24 , Pages 357 – 376, Feb 2005.
– "Introduction to OGSA-DAI Services" Lecture Notes in Computer Science,
LNCS Vol. 3458, pp. 1-12, Springer, 2005.
– Two papers accepted from team at AHM
• Architecture and Status + Benchmarking
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More dissemination
 UG Meeting
– June 1st at NeSC
– Panel of five projects
– Participants from three continents
 UK Projects Meeting
– July 18th at IBM South Bank
– Give an introduction to OGSA-DAI, OMII and NGS
 First DIALOGUE workshop
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August 1st – 2nd at Columbus, Ohio
follow on meetings between projects
bringing together data integration projects
Second workshop November at NeSC
 AHM Workshop on Data Integration
– 7 papers accepted
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Release 7
 Features:
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Recommended registry with Client Toolkit support
Security (WS-RF, Authorisation interface)
Sessions and Transactions support
Seamless Multiplatform Client Toolkit
Integration of DQP
Data Service Concurrency
New OGSA-DAI Engine design
Provide DAIS Spec implementations
 Additionally, potential to prototype some of:
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DFDL
Extended support for Data Integration
Extended support for Files (e.g. Datacutter)
XQuery
OO Data Resources
 Expected release in September 2005
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Research Team
NESC:
– Detailed design, prototyping and evaluation of updated OGSADAI architecture, including functionality enhancements.
• Concurrency, sessions, Tx, monitoring, naming and data transport
– User support/outreach/training.
– Schema integration & XML technologies from Q4 05 onwards
– Performance evaluation
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Architecture v2
 A fresh look at the architecture of OGSA-DAI
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Performance analysis
Provision of additional features
Integration of security
Provision of better integrated tooling and developer support
Better integration with other data services
Extensions to provide
• monitoring
• dynamic management
• dynamic configuration
 Ongoing meetings to discuss
– Architecture Paper accepted for All Hands Meeting
– Leaving architecture in good stead for future work
– Stabilising developer interfaces (especially Activity API) BEFORE R7
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