High energy & nuclear physics

Internet computing on a pool of sites

• Internet computing on a pool of sites

• Meta computing with loosely coupled codes

• Grid computing with poor communication facilities

• Ex: Condor (invented in the 80’s)

A site is both client and server: servent

• A site is both client and server: servent

• Dynamic servent discovery by « contamination »

• 2 approaches:

• centralized management: Napster, Kazaa, eDonkey…
• distributed management: Gnutella, KAD, Freenet, Bittorrent…

• Applications: file sharing, video delivery, collaborative computing

“Coordinated resource sharing and problem solving in dynamic, multi-institutional virtual organisations” (I. Foster)

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