Collaborative Research: Multigrid QCD at the Petascale

合作研究：千万亿级多重网格 QCD

• 批准号: 0749300
• 负责人: Richard Brower
• 金额: $ 74.31万
• 依托单位: Trustees of Boston University
• 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 2014-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0749300&HistoricalAwards=false
• 关键词: Collaborative; Research; Multigrid; QCD; Petascale

0749300Brower0749202Brannick0749317McCormick Numerical solutions to Quantum Chromodynamcs on a lattice are critical to high precision experimental tests of the standard model and an ab-initio understanding of nuclear matter. The core of these calculations involves inverting a Dirac matrix which becomes increasingly ill conditioned as the lattice is refined. Consequently while Terascale computing hardware has exposed this new physics, it is incapable of fully accommodating it. On the other hand, if lattice QCD algorithms are reformulated to exploit and reveal the physics at this finer microsale, Petascale hardware does have the potential for opening up a new era of physics discovery. This award brings together a close collaboration of leading experts in applied mathematics and theoretical physics to meet this challenge by the application of new multi-level algorithms for QCD simulations. The central mission of the proposed Multigrid Quantum Chromodynamics at the Petascale project (MGQCD) is: to develop new and significantly more robust multigrid methods for enabling more complex and higher fidelity physics for lattice QCD calculations; to support their migration into Petascale simulations; and to engage the broader scientific community through collaborative research and educational activities that highlight the multigrid methodology.

0749300Brower0749202Brannick0749317McCormick 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从头开始理解核物质至关重要。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已经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，千万亿次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：开发新的且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；通过强调多重网格方法的合作研究和教育活动吸引更广泛的科学界参与。