Improved Acceleration of the GPU Fourier Domain Acceleration Search Algorithm
Improved Acceleration of the GPU Fourier Domain Acceleration Search Algorithm
复制标题
GPU傅里叶域加速搜索算法的改进加速
DOI:
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发表时间:
2017
期刊:
影响因子:
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通讯作者:
W. Armour
中科院分区:
文献类型:
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作者:
Karel Ad'amek;S. Dimoudi;M. Giles;W. Armour
We present an improvement of our implementation of the Correlation Technique for the Fourier Domain Acceleration Search (FDAS) algorithm on Graphics Processor Units (GPUs) (Dimoudi & Armour 2015; Dimoudi et al. 2017). Our new improved convolution code which uses our custom GPU FFT code is between 2.5 and 3.9 times faster the than our cuFFT-based implementation (on an NVIDIA P100) and allows for a wider range of filter sizes then our previous version. By using this new version of our convolution code in FDAS we have achieved 44% performance increase over our previous best implementation. It is also approximately 8 times faster than the existing PRESTO GPU implementation of FDAS (Luo 2013). This work is part of the AstroAccelerate project (Armour et al. 2002), a many-core accelerated time-domain signal processing library for radio astronomy.