OAC Core: SHF: SMALL: ICURE -- In-situ Analytics with Compressed or Summary Representations for Extreme-Scale Architectures

用于高性能计算（HPC）的系统已经提供了快速增长的计算能力。然而，这种增长也导致了存储器和数据移动带宽相对较低的系统。 这使得分析来自科学模拟的数据非常具有挑战性。 作为回应，一种被称为现场分析的范式出现了。 这个项目通过使用可以被称为同态压缩的东西来进一步改进这个范例。 同态压缩的思想是以一种可以直接对压缩数据执行查询的方式压缩数据（而不需要解压缩）。 该项目正在开发这样的压缩方法，开发在图形处理单元（GPU）上有效执行这种压缩的技术，使用这种压缩表示进行查询处理的技术，最后是一个简化现场分析实现开发的整体系统。 总的来说，该项目将使模拟数据的分析在即将推出的HPC系统上更加有效。 该项目将寻求通过来自代表性不足群体的本科生和研究生直接参与项目开发小组来扩大对计算的参与。 用于高性能计算（HPC）的系统已经提供了快速增长的计算能力。然而，这种增长也导致了存储器和数据移动带宽相对较低的系统。 这使得分析来自科学模拟的数据非常具有挑战性。 作为回应，一种被称为现场分析的范式出现了。 这个项目通过使用可以被称为同态压缩的东西来进一步改进这个范例。 同态压缩的思想是以一种可以直接对压缩数据执行查询的方式压缩数据（而不需要解压缩）。 由此产生的框架ICURE可以促进加速器本身的原位分析，降低分析的总体内存需求，降低总数据移动成本，甚至降低执行分析的时间成本。 实现ICURE的目标涉及许多开放的挑战。首先是摘要结构的选择和构建。这个项目试验了两种不同的摘要或简明表示：位图索引和集成值索引。第二个问题是使用摘要和压缩表示的分析方法，重点是将这些表示用于各种分析任务：计算聚合，相关性，基于值的连接，时间步长选择和有趣的子区域分析。 第三个问题是自动化布局和质量。考虑到提供最低的 为了消除模拟和分析之间的干扰，该项目自动决定在HPC系统节点内放置特定分析操作和数据。类似地，执行由分析的期望精度和开销驱动的采样水平的自动选择。该项目将寻求通过来自代表性不足的群体的本科生和研究生直接参与项目开发团队来扩大对计算的参与。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

Systems for High Performance Computing (HPC) have been providing rapidly increasing computing power. However, this growth has also led to systems where the memory and data movement bandwidth is relatively lower. This makes analyzing the data from scientific simulations very challenging. A paradigm called in-situ analytics has emerged in response. This project is further improving this paradigm, by using what can be referred to as homomorphic compressions. The idea of homomorphic compression is to compress the data in a way that queries can be directly executed on the compressed data (without need for decompression). This project is developing such compression methods, developing techniques to perform such compression efficiently on Graphic Processing Units (GPUs), techniques for query processing using such compressed representations, and finally, an overall system that will simplify development of in-situ analytics implementations. Overall, this project will be making analysis of data from simulations more effective on the upcoming systems for HPC. This project will seek to broaden participation in computing through direct participation in the project development teams by undergraduate and graduate students from under-represented groups. Systems for High Performance Computing (HPC) have been providing rapidly increasing computing power. However, this growth has also led to systems where the memory and data movement bandwidth is relatively lower. This makes analyzing the data from scientific simulations very challenging. A paradigm called in-situ analytics has emerged in response. This project is further improving this paradigm, by using what can be referred to as homomorphic compressions. The idea of homomorphic compression is to compress the data in a way that queries can be directly executed on the compressed data (without need for decompression). The resulting framework, ICURE, can facilitate in situ analytics on accelerators themselves, reduce overall memory requirements for the analytics, reduce total data movements costs, and even reduce the time cost of performing the analytics. Achieving the goals of ICURE involves many open challenges. The first is the choice of summarization structure and its constructions. This project experiments with two different summary or concise representations: bitmap indices and an integrated value index. The second issue is analyses methods using summary and compressed representations, where the focus is on the use of these representations for a variety of analyses tasks: computing aggregations, correlations, value-based joins, time-step selection, and interesting subregions analysis. The third issue is automating placement and quality. Driven by the consideration of providing the lowest interference between the simulation and analytics, this project automates decisions on placement of specific analytics operations and data within the node of HPC system. Similarly, automatic selection of sampling level driven by desired accuracy and overheads of the analyses is performed. This project will seek to broaden participation in computing through direct participation in the project development teams by undergraduate and graduate students from under-represented groups.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.