grid-level 'wulf?

[Gerry Creager N5JXS]

Has anyone started playing 'Beowulf on a grand scale' with some of the 
grid computing initiatives?  If so, how? Are you:
Linking existing clusters?
aggregating geographically challenged nodes into a grid-based cluster?
Something else?
What networking protocols for dispersed systems across carrier-based 
network clouds?

Thanks, gerry
--
Gerry Creager -- gerry at cs.tamu.edu
Network Engineering
Academy for Advanced Telecommunications and Learning Technologies		
Texas A&M University	979.458.4020  (Phone) -- 979.847.8578  (Fax)