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LQCD Computing Project Overview

This overview provides a high-level scope of the LQCD Computing Project, including deployment of new resources and operations. It discusses the project's context, mapping of topics to the schedule, and highlights the key parameters and trends in technology procurement strategy. The overview also touches on the funding sources and projects that affect the LQCD Computing Project, such as LQCD SciDAC, base contributions, QCDOC at BNL, FNAL cluster upgrade, and ILDG.

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LQCD Computing Project Overview

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  1. LQCD Computing Project Overview Chip Watson LQCD Computing Review Boston, May 24-25, 2005

  2. Outline • High Level Scope of the Project • Context (related work) • Mapping of topics to today’s schedule

  3. Project Scope High Level View: • Deployment of new resources • Operations of resources

  4. Project Scope (1) • Deployment • Annual installation of increasing computing capacity, matching the needs of increasingly challenging science problems • Aggregate capacity after 4 years of this project: ~18+ TFlops (double precision, sustained, average of key algorithms) • Each year, we will select the best platform for the planned physics • Clusters are almost certain to be optimal in 2006 • Clusters are most likely to be optimal throughout the next 4 years, but we will track alternatives

  5. Project Scope (2) • Operations • Operate at three sites: BNL, FNAL, JLab • Operate as a metafacility • Operate multiple generations of new machines (an aggregate of ~12 TFlops new in this investment) • Operate the existing dedicated USQCD machines (~6 TFlops) as part of this metafacility

  6. LQCD Capacity Growth $/MF $M

  7. Budget Breakdown

  8. Project Context The following projects and funding sources significantly effect the current project: • LQCD SciDAC(HEP, NP, ASCR for computer science) • Base contributions(HEP, NP) • QCDOC at BNL(HEP, NP, ASCR funding) • FNAL cluster upgrade(HEP) • ILDG – International Lattice Data Grid

  9. Project Context (1) • LQCD SciDAC Project National Computational Infrastructure for Lattice Gauge Theory Scope: • Computing R&D (hardware platforms & software) • API standardization, software implementation • Performance optimization involving both physicists and computer scientists (2x gain on DWF algorithm!) • Prototype clusters: platform evaluations & software testbeds Impact of SciDAC on this project: • Lowers risk by reducing platform (node & network) uncertainty • Increases platform independence, code (& user) portability

  10. Project Context (2) • Ongoing base HEP and NP programs at the 3 labs • leveraged staffing and hardware (contributions) • leveraged computing infrastructure (networking, tertiary storage, security, account management, ...) • BNL QCDOC supercomputer, 4.2 TFlops (FY04-5) (will initially constitute >50% of total US LQCD capacity) • FNAL cluster upgrade (FY05) (second largest USQCD resource) • International Lattice Data Grid (ILDG) (significantly leveraged computational capacity; a data exchange)

  11. Review Schedule Overview • Project • Computational requirements • Technology: key parameters, trends, procurement strategy • FY06 procurement details • Operations • Context • QCDOC • SciDAC cluster prototypes • SciDAC software • ILDG • Management, Cost & Schedule

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