MRI: Acquisition of a 40-core Linux cluster for oceanographic research at Earth & Space Research

MRI：采购 40 核 Linux 集群用于地球海洋学研究

• 批准号: 0722644
• 负责人: Laurence Padman
• 金额: $ 16.44万
• 依托单位: Earth and Space Research
• 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: 2007-08-15 至 2009-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0722644&HistoricalAwards=false
• 关键词: MRI; Acquisition; 40; core; Linux

Funds are provided to purchase a Multi-Processor, Linux-based Cluster ("MPC") to improve ESR's (Earth and Space Research) capacity to carry out highly processor-intensive computations for a variety of oceanographic research applications. ESR scientists presently conduct their research using networked, single-processor PCs. These facilities have fallen well behind the demands of their research interests. Access to the MPC would significantly enhance existing programs, and would open up research areas that are presently inaccessible to ESR. The proposed MPC is a 40-core (20 dual-core AMD Opteron processors) system arranged in 4 processors per node. The system scale is set by both budget and infrastructure (power and air conditioning) requirements. The MPC would be owned and operated by ESR and would be available to ESR scientists and, as load levels permit, to project collaborators at other institutions. The proposed system would significantly enhance the contribution of ESR scientists to studies of topical interest including: . tidal influence on ocean mixing and sea-ice properties in polar seas, and ice/ocean interactions at the base of Antarctic ice shelves; . analysis of the quasi-global and high-resolution distribution of upper ocean currents and mixing on daily timescales, and short-range forecast of the surface currents; and . the role of anticyclonic eddies in modifying convective ventilation. The MPC would assist in these studies by allowing expanded model runs to better represent processes that require extremely long run times on their existing single-CPU computers. Computationally demanding tasks include: modeling internal tides and density outflows in regions of steep topography (where fine grid spacing is essential); coupling tides to seasonal and longer changes in wind-forced and thermohaline flows (requiring longer integration times); explicitly representing sea ice in ocean and coupled ice-shelf/ocean models (a factor of 2-3 increase in CPU needs relative to ocean-only models); and increasing the sophistication of turbulence closure models for both high latitude and quasi-global upper-ocean studies.

提供了资金来购买基于Linux的多处理器集群（“ MPC”），以提高ESR（地球和空间研究）的能力，以对各种海洋学研究应用进行高度处理器密集型计算。 ESR科学家目前使用网络的单处理器PC进行研究。这些设施远远落后于其研究兴趣的需求。进入MPC将大大增强现有计划，并将开放目前无法访问ESR的研究领域。提出的MPC是一个40核（20个双核AMD Opteron处理器）系统，该系统在每个节点4个处理器中排列。系统规模均由预算和基础设施（电力和空调）要求确定。 MPC将由ESR拥有和运营，并将向ESR科学家使用，并在负载水平允许的情况下向其他机构进行项目合作者。拟议的系统将显着增强ESR科学家对局部关注研究的贡献：潮汐对极地海洋中的海洋混合和海冰特性的影响，南极冰架底部的冰/海洋相互作用； 。分析上洋流的准全球和高分辨率分布，并在每日时间尺度上混合，以及对表面电流的短期预测；和 。反流行涡流在修饰对流通风中的作用。 MPC将通过允许扩展的模型运行来更好地表示需要在其现有的单CPU计算机上运行时间极长的过程来帮助这些研究。计算苛刻的任务包括：对陡峭地形区域的内部潮汐和密度流出进行建模（其中必不可少的网格间距是必不可少的）；耦合潮汐与季节性和较长的风氨基和热氨基流动变化（需要更长的整合时间）；明确代表海洋中的海冰和耦合的冰架/海洋模型（相对于仅海洋模型，CPU需求增加了2-3倍）；并增加了高纬度和准全囊的湍流闭​​合模型的复杂性。