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SciDAC Software Infrastructure for Lattice Gauge Theory

SciDAC Software Infrastructure for Lattice Gauge Theory. Richard C. Brower All Hands Meeting BNL March 26, 2004. http://www.lqcd.org/scidac. Participants in Software Project. (UK Peter Boyle & Balint Joo ). * Software Coordinating Committee. Optimised for P4 and QCDOC.

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SciDAC Software Infrastructure for Lattice Gauge Theory

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  1. SciDAC Software Infrastructurefor Lattice Gauge Theory Richard C. Brower All Hands Meeting BNL March 26, 2004 http://www.lqcd.org/scidac

  2. Participants in Software Project (UK Peter Boyle & Balint Joo ) * Software Coordinating Committee

  3. Optimised for P4 and QCDOC Optimised Dirac Operators, Inverters Level 3 QDP (QCD Data Parallel) Lattice Wide Operations, Data shifts Level 2 QLA (QCD Linear Algebra) Exists in C/C++ Level 1 QMP (QCD Message Passing) Exists in C/C++, implemented over MPI, QCDOC, M-VIA for gigE SciDAC Software Structure QIO Binary Data Files/XML Metadata

  4. Critical Tasks for Next Six Months • Nail down QMP Standard on QCDOC • Interface to Level 3 Inverters/Asqtad Force • Opt: MILC/QDP , Chroma/QDP++ , CPS • Uniform Queuing/Scripting/File Management

  5. Isomorphic to Yesterday’s Software Agenda Agenda: I. Code Benchmarks & Acceptance for QCDOC: MILC/Asqtad : Chroma/Wilson II. QMP Modifications and Extensions III. Runtime Environment (Subcommittee: Holmgren, Petrov, Watson) Uniform Scripts/Batch/File System IV. QCDML I/0 Routines: (DeTar) QCDML ILDG metadata (Edwards/Simone) ILDG middleware (DeTar Moderate)

  6. Two Questions • For a $5 Million Hardware Installation: 20% Faster Algorithms +$1 Million Hardware What fraction of Hardware Budget should be in Software and Algorithmics R&D? • Goal of “Lattice Field Theory” Project: All 4-d Quantum Field Theory and Matrix QM.y How SHOULD Name and Program reflect this agenda for Theoretical Physics? (y e.g. SM/SUSY/EFF FIELD THEORIES or MODELS/LargeN/STRINGS ...)

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