Upload
irina
View
27
Download
2
Tags:
Embed Size (px)
DESCRIPTION
How to avoid coming unstuck Steve Fisher / RAL. www.eu-egee.org. EGEE is a project funded by the European Union under contract IST-2003-508833. Computing Element. Retain!. Retain. Get rid of it. This is separate – good (I would prefer “status”). Why separate Info, Policy and ACPB. - PowerPoint PPT Presentation
Citation preview
EGEE is a project funded by the European Union under contract IST-2003-508833
How to avoid coming unstuck
Steve Fisher / RAL
www.eu-egee.org
Some thoughts on GLUE, 16 November 2004 - 2
Computing Element
This is separate – good (I would prefer “status”)
Why separate
Info, Policy and ACPB
Get rid of it RetainRetain!
Some thoughts on GLUE, 16 November 2004 - 3
Site and Service
Why is ServiceStatus not separate
Some thoughts on GLUE, 16 November 2004 - 4
Host etc
This complexity does not help us at all – it is not for batch farms.
If this remains in schema our info providers should not touch it.
Some thoughts on GLUE, 16 November 2004 - 5
A few more details
• The document must define all attributes precisely e.g. Authorization Rule
• Too many optional arguments How to interpret null? Best avoided – otherwise meaning of null must be defined
• Is the assumption that a CE is bound to a single VO good?
• I am concerned to avoid models which are not easily mapped to relational model. Should probably also ensure easy mapping to hierarchical model.
• We want something simple It is hard to get where we want without starting again Tweaking won’t work
Some thoughts on GLUE, 16 November 2004 - 6
SuperGLUE
Site
Service
ServiceStatus
CE
CEStatus
SE
SEStatus
*
Can we make it as simple as this?
In relational model all except site linked by endpoint URL