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Paper: Spherical Harmonic Transforms with S2HAT (Scalable Spherical Harmonic Transform) Library
Volume: 461, Astronomical Data Analysis Software and Systems XXI
Page: 61
Authors: Fabbian, G.; Szydlarski, M.; Stompor, R.; Grigori, L.; Falcou, J.
Abstract: We present the Scalable Spherical Harmonic Transform library (S2HAT) – a portable, massively parallel, scalable library for calculating scalar and spin-weighted spherical harmonic transforms on different computer architectures, including distributed-memory, hybrid multi-/many- core platforms, as well as clusters of many GPUs and CPUs. Here we comment on the two latter cases. The numerical complexity of the library transforms is O(npix1/2max2). The S2HAT library is publicly available.
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