Docstoc

PDPTA-1283PD

Document Sample
PDPTA-1283PD Powered By Docstoc
					                        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
Grid Research in Europe



                                                                     Now merged with:




                               The major European Grid project
                                        led by CERN




Large numerical applications      Grid for Industrial Use of European Networks
PDPTA 27-JUN-2001                  Grid-Ireland; Page 2
Grid-Ireland                                                [www.grid-ireland.org]

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

                                                    Funding approved APR-2000 :
                                                          TCD / UCC / NUIG
                Galway
                           Dublin
                                                    Formally started 1-OCT-2000

                                                    Funded to establish Irish grid
                    Cork
                                                   And to start fundamental research:
Informally associated with:                           system models
                                                      execution models
                                                      algorithms

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

                    • the grid is a very dynamic system
                    • its behaviour is poorly understood
                    • effective control requires knowledge
                    • need:
                       monitoring
                       analysis
                       models
                       prediction
                    • focus of Trinity College Dublin

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

    Grid programming execution models are control-driven
                    • message passing:
                             • efficient && inconvenient
                    • shared memory                                                          Intercon nection
                                                                                                 Ne twork



                             • inefficient && convenient
                                                               Clu ster           Clu ster                      Clu ster
                                                                      1                  2                              N

                                                                     ne twork           ne twork                       ne twork



                    • evolution: hybrid memory
                                                                    interface          interface                      interface

                                                                       DSM                DSM                           DSM
                                                                      Cache              Cache                         Cache



                          • grid SHM for weak data flows              DSM
                                                                    Dir ector y
                                                                                         DSM
                                                                                       Dir ector y
                                                                                                                       DSM
                                                                                                                     Dir ector y




                          • grid MPI for strong data flows
                                                                          CPU                CPU                        CPU




                    • focus of Trinity College Dublin                             DSM Sh ared Addr ess Space




PDPTA 27-JUN-2001                       Grid-Ireland; Page 5
Revolution
                           Move away from control-driven models
          S              c    • Condensed Graphs on grids
                                 • superset of dataflow & demand-driven models
 s                  s
                                    • easy transformation from other models
              c         c        • focus of University College Cork
                                                                       Cyclone
                                                    PVM
                            Workstation                                          WebCom

                        Condensed Graphs Implementation Spectrum

                                                                                      Grid
       FPGAs                              Linux Kernel
PDPTA 27-JUN-2001                               Grid-Ireland; Page 6
Algorithms
 Present algorithms are unsuited to Grid
  • explore via medical imaging
  • two applications:
      • Monte-Carlo for radiotherapy




      • adaptive mesh simulation
  • focus of NUI Galway

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

                    June 2001:
                       • 3 institutions
                       • 4 research themes

                    By December 2001:
                       • 9 institutions
                       • 15 research themes
                             computer science
                             medical imaging
                             astrophysics
                             meteorology
                             geophysics
                             ….


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


                    Collaborative applications
                    Computing portals
                    Inter-domain ultra-large compute engines
                    Inter-domain data fusion
                    Inter-domain data dissemination
                    Inter-domain process control
                    ….




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

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:6
posted:12/2/2012
language:English
pages:9