the science of simulation falsification algorithms phenomenology machines better theories computer architectures non-perturbative QFT experimental tests

tba 2 degenerate flavours quenched QCDOC T3E T3D i860 DAP Moore’s Law 1 Mflops 1 Gflops 1 Tflops 1 Pflops UKQCD UKQCD, the first UK Grand Challenge commercial computers optimised codes  competitive edge effort focused on exploitation commercial computers optimised codes  competitive edge effort focused on exploitation

has it been a success? yes …excellent value for money –machines, codes and data have been fully exploited but we had to concentrate on one action and one parameter range –zero temperature O(a)-improved Wilson quarks and we were dependent on purchasing machines off the shelf –first the UK parallel computing industry disappeared –now the HPC market is shrinking world wide yes …excellent value for money –machines, codes and data have been fully exploited but we had to concentrate on one action and one parameter range –zero temperature O(a)-improved Wilson quarks and we were dependent on purchasing machines off the shelf –first the UK parallel computing industry disappeared –now the HPC market is shrinking world wide

UKQCD international partnerships DOE+PPARC+RIKEN: QCDOC –low power ASIC using IBM embedded processor technology to scale to 10 4 nodes DOE SciDAC –standard APIs for portability made a prerequisite for large machine funding –linked to UKQCD via QCDOC open source policy PPARC GridPP –QCD data grid conforming to emerging EDG + OGSA standards –linked to SciDAC via QCDOC DOE+PPARC+RIKEN: QCDOC –low power ASIC using IBM embedded processor technology to scale to 10 4 nodes DOE SciDAC –standard APIs for portability made a prerequisite for large machine funding –linked to UKQCD via QCDOC open source policy PPARC GridPP –QCD data grid conforming to emerging EDG + OGSA standards –linked to SciDAC via QCDOC

the UK QCDgrid “QCDOC” OGSA metadata catalogue Tier 0 TestBed 1 Tier 1 Tier 2  US DOE SciDAC physics search LFN physics history software LFN data LFN data Edinburgh Swansea Liverpool Glasgow

the next step there is a robust software strategy –open source codes will provide choice the grid will provide tools for data integration –OGSA standard will allow interoperability but who will build and operate machines? –we are dependent on a few individuals and face rapidly changing market forces there is a robust software strategy –open source codes will provide choice the grid will provide tools for data integration –OGSA standard will allow interoperability but who will build and operate machines? –we are dependent on a few individuals and face rapidly changing market forces to encourage machine builders and make codes + data available to all to encourage machine builders and make codes + data available to all the challenge

International Particle Simulation Organisation Purpose –to generate and manage field theory configurations Funding –annual subscriptions based on community size and value of total data held –subscriptions paid with data and/or money –data value decreases according to Moore’s law Council –decides actions and parameters –manages the grid –buys data, providing funding for machines Users –from member states may access all data Purpose –to generate and manage field theory configurations Funding –annual subscriptions based on community size and value of total data held –subscriptions paid with data and/or money –data value decreases according to Moore’s law Council –decides actions and parameters –manages the grid –buys data, providing funding for machines Users –from member states may access all data