Grid Research in Ireland

Brian Coghlan, Trinity College Dublin

John Morrison, University College Cork

Andy Shearer, NUI Galway

Michael Manzke, Trinity College Dublin

PDPTA 27-JUN-2001

PDPTA 27-JUN-2001 Grid-Ireland; Page 2

Grid Research in EuropeGrid Research in Europe

Now merged with:Now merged with:

The major European Grid projectThe major European Grid projectled by CERNled by CERN

Grid for Industrial Use of European NetworksGrid for Industrial Use of European NetworksLarge numerical applicationsLarge numerical applications

PDPTA 27-JUN-2001 Grid-Ireland; Page 3

Grid-Ireland Grid-Ireland [www.grid-ireland.org][www.grid-ireland.org]

Pilot OCT-1999 : Dublin-----CorkPilot OCT-1999 : Dublin-----Cork

Funding approved APR-2000 :Funding approved APR-2000 :TCD / UCC / NUIGTCD / UCC / NUIG

Formally started 1-OCT-2000Formally started 1-OCT-2000

Funded to establish Irish gridFunded to establish Irish grid

And to start fundamental research:And to start fundamental research:system modelssystem modelsexecution modelsexecution modelsalgorithmsalgorithms

Informally associated withInformally associated with:

Dublin

Galway

Cork

PDPTA 27-JUN-2001 Grid-Ireland; Page 4

Understanding

• the grid is a very dynamic system

• its behaviour is poorly understood

• effective control requires knowledge

• need:monitoringanalysismodelsprediction

• focus of Trinity College Dublin

PDPTA 27-JUN-2001 Grid-Ireland; Page 5

Evolution

Grid programming execution models are control-driven

Interconnection Network

network interface

DSM Cache

DSM Directory

CPU

network interface

DSM Cache

DSM Directory

CPU

network interface

DSM Cache

DSM Directory

CPU

DSM Shared Address Space

Cluster1

Cluster2

ClusterN

• shared memory• inefficient && convenient

• evolution: hybrid memory

• grid SHM for weak data flows• grid MPI for strong data flows

• focus of Trinity College Dublin

• message passing:• efficient && inconvenient

PDPTA 27-JUN-2001 Grid-Ireland; Page 6

Revolution

Condensed Graphs Implementation Spectrum

FPGAs

Workstation

Linux Kernel

WebCom

Grid

Cyclone

PVM

Move away from control-driven modelsS

c c

s

c

s

• Condensed Graphs on grids• superset of dataflow & demand-driven models

• easy transformation from other models

• focus of University College Cork

PDPTA 27-JUN-2001 Grid-Ireland; Page 7

Algorithms

• explore via medical imaging

• two applications:

Present algorithms are unsuited to Grid

• adaptive mesh simulation

• focus of NUI Galway

• Monte-Carlo for radiotherapy

PDPTA 27-JUN-2001 Grid-Ireland; Page 8

Grid-Ireland

June 2001:• 3 institutions• 4 research themes

By December 2001:• 9 institutions• 15 research themes

computer sciencemedical imagingastrophysicsmeteorologygeophysics….

PDPTA 27-JUN-2001 Grid-Ireland; Page 9

The Future

Collaborative applicationsComputing portalsInter-domain ultra-large compute enginesInter-domain data fusionInter-domain data disseminationInter-domain process control….