High energy & nuclear physics

Use case: Italian student – heart accident in Klagenfurt

(ALIAS-NATHCARE EU AS projects)

Data inside the grid # data at the side of the grid !

Basic idea

• Use of metadata/indexes. Pb: indexes are (sensitive) information

Alternative

• Encrypted indexes, use of views, proxies

Mediation

• No single view of the world  mechanisms for interoperability, ontologies

Negotiation: a key open issue

Motivation

• Motivation

• collaborative caching is proved to be efficient
• each institution wants to control the access to its data
• no standard exists in Grids for caching

• A possible approach

• on-demand caching
• a two-level cache: local caches and a global virtual cache
• use metadata to collaborate / index data