论文标题
大量天空图的加速球形谐波变换
Accelerating spherical harmonic transforms for a large number of sky maps
论文作者
论文摘要
球形谐波变换是分析球形数据集的强大工具，例如宇宙微波背景数据。在这项工作中，我们提出了一个新的方案，用于支持CPU和GPU计算的球形谐波变换，该方案在大量的天空图上特别有效。通过将我们的实施与标准Libsharp-HealPix程序进行比较，我们演示了CPU实施的2-10次速度，并在采用最先进的GPU时最多30倍。该新方案的软件包可通过开源GitHub存储库获得。
The spherical harmonic transform is a powerful tool in the analysis of spherical data sets, such as the cosmic microwave background data. In this work, we present a new scheme for the spherical harmonic transforms that supports both CPU and GPU computations, which is specially efficient on a large number of sky maps. By comparing our implementation with the standard Libsharp-HEALPix program, we demonstrate 2-10 times speedup for the CPU implementation, and up to 30 times speedup when a state-of-the-art GPU is employed. This new scheme's software package is available via an open source GitHub repository.
