Collaborative Research: Multigrid QCD at the Petascale

合作研究：千万亿级多重网格 QCD

• 批准号: 0749202
• 负责人: James Brannick
• 金额: $ 36.82万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-12-01 至 2012-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0749202&HistoricalAwards=false
• 关键词: Collaborative; Research; Multigrid; QCD; Petascale

Proposal Title: Collaborative Research: Multigrid QCD at the PetascaleInstitution: Trustees of Boston UniversityAbstract Date: 10/10/070749300Brower0749202Brannick0749317McCormickNumerical solutions to Quantum Chromodynamcs on a lattice are critical to highprecision experimental tests of the standard model and an ab-initio understanding ofnuclear matter. The core of these calculations involves inverting a Dirac matrix whichbecomes increasingly ill conditioned as the lattice is refined. Consequently whileTerascale computing hardware has exposed this new physics, it is incapable of fullyaccommodating it. On the other hand, if lattice QCD algorithms are reformulated toexploit and reveal the physics at this finer microsale, Petascale hardware does have thepotential for opening up a new era of physics discovery. This award brings together aclose collaboration of leading experts in applied mathematics and theoretical physics tomeet this challenge by the application of new multi-level algorithms for QCDsimulations. The central mission of the proposed Multigrid QuantumChromodynamics at the Petascale project (MGQCD) is: to develop new and significantlymore robust multigrid methods for enabling more complex and higher fidelity physics forlattice QCD calculations; to support their migration into Petascale simulations; and toengage the broader scientific community through collaborative research andeducational activities that highlight the multigrid methodology.NATIONAL SCIENCE FOUNDATIONProposal Abstract

提案标题：合作研究：千万亿级量子色动力学机构：波士顿大学受托人摘要日期：10/10/070749300Brower0749202Brannick0749317McCormick晶格上量子色动力学的数值解对于标准模型的高精度实验测试和对核物质的从头理解至关重要。这些计算的核心涉及狄拉克矩阵的逆，随着晶格的细化，狄拉克矩阵变得越来越病态。因此，尽管万亿级计算硬件暴露了这种新物理原理，但它无法完全适应它。另一方面，如果重新制定晶格 QCD 算法来利用和揭示这种更精细的微销售中的物理现象，那么 Petascale 硬件确实有潜力开辟物理发现的新时代。该奖项汇集了应用数学和理论物理领域领先专家的密切合作，通过应用新的 QCD 模拟多级算法来应对这一挑战。 Petascale 项目 (MGQCD) 拟议的多重网格量子色动力学的中心任务是：开发新的、更加鲁棒的多重网格方法，以实现更复杂和更高保真度的晶格 QCD 计算物理；支持他们迁移到千万亿级模拟；并通过强调多重网格方法的协作研究和教育活动吸引更广泛的科学界。国家科学基金会提案摘要