Fast Fourier Transform using compiler auto-vectorization

Examensarbete för masterexamen

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Type: Examensarbete för masterexamen
Title: Fast Fourier Transform using compiler auto-vectorization
Authors: Göc, Dundar
Abstract: The purpose of this thesis is to develop a fast Fourier transformation algorithm written in C with the use of GCC (GNU Compiler Collection) auto-vectorization in the multiplicative group of integers modulo n, where n is a word sized odd integer. The specific Fourier transform algorithm employed is the cache-friendly version of the Truncated Fourier Transform. The algorithm was implemented by modifying an existing library for modular arithmetic written in C called zn poly. The majority of the thesis work consisted of changing the code in a way to make integration into FLINT possible. FLINT is a versatile library, written in C, aimed at fast arithmetic of different kinds. The results show that auto-vectorization is possible with a potential speedup factor of 3. The performance increase is however entirely dependent on the task at hand and the nature of the computation being made.
Issue Date: 2019
Publisher: Chalmers tekniska högskola / Institutionen för matematiska vetenskaper
Collection:Examensarbeten för masterexamen // Master Theses

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