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Overview of LQCD Computing Project: Enhancing Computational Resources for Physics

The LQCD Computing Project focuses on deploying and operating advanced computational resources to tackle increasingly challenging science problems in lattice quantum chromodynamics (LQCD). By 2009, the project aims to achieve an aggregate computing capacity of approximately 18+ TFlops through annual installations and optimal platform selection. Operations are strategically distributed across three sites (BNL, FNAL, JLab) and involve multiple generations of machines. The project benefits from collaborations and funding from key initiatives like SciDAC, ensuring a robust computational ecosystem for particle physics research.

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Overview of LQCD Computing Project: Enhancing Computational Resources for Physics

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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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