Applications & a Reality Check

Mark Hayes

Applications on the UK Grid

Ion diffusion through radiation damaged crystal structures (Mark Calleja, Mark Hayes, Cambridge)

• Monte Carlo simulation lots of independent runs• small input & output • more CPU -> higher temperatures, better stats• access to ~100 CPUs on the UK Grid• Condor-G client tool for farming out jobs

Applications on the UK Grid

GEODISE - Grid Enabled Optimisation & Design Search for Engineering(Simon Cox, Andy Keane, Hakki Eres, Southampton)

• Genetic algorithm to find the bestdesign for satellite truss beams

• Java plugins to MATLAB for remotejob submission to the Grid

• Used CPU at Belfast, Cambridge, RAL,London, Oxford & Southampton

Applications on the UK Grid

GENIE - Grid Enabled Integrated Earth system model(Steven Newhouse, Murtaza Gulamali - Imperial)

• Ocean-atmosphere modelling

• How does moisture transport from the atmosphere effect ocean circulation?

• ~1000 independent 4000year runs (3 days real time!) on ~200 CPUs

• Flocked condor pools at London & Southampton

Applications on the UK Grid

• Reality Grid - see earlier talk

• BLAST on the Grid - John Watt, NeSC

• Nimrod/G - Jonathan Giddy, Cardiff

• DL_POLY - Rob Allan, Daresbury

• R-Matrix - Terry Harmer, Belfast

• GITS integration test scipt - David Baker, Southampton

Reality Check

• Lots of work to get accounts set up at remote sites• Job monitoring and debugging is difficult• MDS information providers could be richer• MDS availability & poor performance• GT2 interface to job schedulers is very poor• GT2 version incompatibilities• Software licences (e.g. for DL_POLY)• Firewall port ranges (not just for Globus)

Work in progress

• Virtual Organization Management (VOM) portal will ease account requests & generation• Single set of user terms & conditions. This must actually reduce the amount of paperwork involved to be worthwhile!• XML database/web service alternative to MDS (+GT3?)• Trusted host database for firewall configuration• Accounting: web service tools for collection & query of usage info• Documentation: papers in preparation. Perhaps also a user’s & administrator’s guide?