Design of FastQuery: How to Generalize Indexing and Querying System for Scientific Data

Wu, Jerry ; Wu, Kesheng

关键词: Indexing;    FastQuery;    HDF5;    NetCDF;   

DOI  :  10.2172/1051264
RP-ID  :  LBNL-5088E
PID  :  OSTI ID: 1051264

学科分类：数学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

Modern scientific datasets present numerous data management and analysis challenges. State-of-the-art index and query technologies such as FastBit are critical for facilitating interactive exploration of large datasets. These technologies rely on adding auxiliary information to existing datasets to accelerate query processing. To use these indices, we need to match the relational data model used by the indexing systems with the array data model used by most scientific data, and to provide an efficient input and output layer for reading and writing the indices. In this work, we present a flexible design that can be easily applied to most scientific data formats. We demonstrate this flexibility by applying it to two of the most commonly used scientific data formats, HDF5 and NetCDF. We present two case studies using simulation data from the particle accelerator and climate simulation communities. To demonstrate the effectiveness of the new design, we also present a detailed performance study using both synthetic and real scientific workloads.