http://www.grid-support.ac.uk
http://www.ngs.ac.uk
OGSA-DAI Current Version
Guy Warner
NeSC Training Team
http://www.nesc.ac.uk/
http://www.pparc.ac.uk/
http://www.eu-egee.org/
Acknowledgement
• These slides were part of a presentation by Neil
Chue Hong at the e-Science All Hands Meeting,
Nottingham September 2005.
Induction to Grid Computing and the National Grid Service
Timeline
2003
2004
2005
OGSA-DAI
WSRF 1.0
OGSI
Release 6
Release 1
Release 1 interim
Release 3.1
Release 2
Release 2 interim
Release 3
Release 4
Release 5

OGSA-DAI
WS-I 1.0/
OGSA-DAI
WS-I 1.1 (OMII)
Our stakeholders
• OMII
– Current version of OGSA-DAI WS-I 1.0 distribution runs on OMII
– Release 1.1 due out soon
– Issues when security is introduced
• Globus
– WSRF 0.9.6 distribution bundled with GT4.0
– WSRF 1.0 distribution bundled with GT4.0.1
• Projects
– Number of projects have used/use/will use OGSA-DAI
AstroGrid
Biogrid
BioSimGrid
Bridges
caGrid
DataMiningGrid
eDiamond
FirstDig
GEDDM
GeneGrid
GEON
GridMiner
INWA
IU RGRBench
LEAD
MCS
myGrid
N2Grid
ODD-Genes
OGSA-WebDB
SIMDAT
GOLD
Out with the old…
Client
Client
Client Toolkit API
SOAP
DAISGR
GDS
GDSF
Relational
GDS
GDSF
XML
GDS
Server
GDSF
Files
Data
… in with the new!
Client
Generic Client Toolkit API
WSRF
Client
WS-I
SOAP
Data Service Data Service
WS-I
WSRF
Server
DAI Core
DSR
Relational
DSR
XML
DSR
Files
Data
Changes in moving to WSRF/WS-I
• Registry component (DAISGR) no longer supported
– Hope to leverage of third party registration services
– GRIMOIRES (http://www.omii.ac.uk/mp/mp_grimoires.htm)
– Others …
• GDS/GDSF roles combined
– Use data services
– Currently static services but
– Reconfigurable services
• Improvements to the GDS
–
–
–
–
Data resource abstraction decoupled from the service
Renaming (consistent naming across platform versions)
Ability to enforce control flow constraints (ordering activities)
Refactored exception framework
• Temporary set-backs (we promise we’ll fix them)
– No security model
– No concurrency
– Previously used GDSs for concurrency
– Support now moving to the engine
Further information
• The OGSA-DAI Project Site:
– http://www.ogsadai.org.uk
• The DAIS-WG site:
– http://forge.gridforum.org/projects/dais-wg/
• OGSA-DAI Users Mailing list
– users@ogsadai.org.uk
– General discussion on grid DAI matters
• Formal support for OGSA-DAI releases
– http://www.ogsadai.org.uk/support
– support@ogsadai.org.uk
• OGSA-DAI training courses