大型Java数组及其应用程序

2015 International Conference on High Performance Computing & Simulation (HPCS) Pub Date : 2015-07-20 DOI:10.1109/HPCSim.2015.7237077

Piotr Wendykier, B. Borucki, K. Nowinski

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引用次数: 1

摘要

当前Java虚拟机的所有实现都允许创建长度小于231个元素的一维数组。此外，由于Java缺乏真正的多维数组，大多数数值库使用一维数组来存储多维数据。在当前的限制下，不可能存储大小大于12903的卷。另一方面，来自科学模拟或医疗扫描仪的数据不断增长，超过这个限制并不罕见。这项工作解决了一维Java数组的最大大小问题。JLargeArrays是一个一维数组的Java库，最多可以存储263个元素。与本地Java数组和Fastutil库的性能比较表明，JLargeArrays是最快的解决方案。还讨论了在Java集合以及数值和可视化框架中的可能应用。

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Large Java arrays and their applications

All current implementations of Java Virtual Machines allow the creation of one-dimensional arrays of length smaller than 231 elements. In addition, since Java lacks true multidimensional arrays, most of numerical libraries use one-dimensional arrays to store multidimensional data. With the current limitation, it is not possible to store volumes of size larger than 12903. On the other hand, the data from scientific simulations or medical scanners continuously grow in size and it is not uncommon to go beyond that limit. This work addresses the problem of maximal size of one-dimensional Java arrays. JLargeArrays is a Java library of one-dimensional arrays that can store up to 263 elements. Performance comparison with native Java arrays and Fastutil library shows that JLargeArrays is the fastest solution overall. Possible applications in Java collections as well as numerical and visualization frameworks are also discussed.

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来源期刊

2015 International Conference on High Performance Computing & Simulation (HPCS)

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