An implementation of parallel 3-D FFT using short vector SIMP instructions on clusters of PCs

Abstract

In this paper, we propose an implementation of a parallel three-dimensional fast Fourier transform (FFT) using short vector SIMD instructions on clusters of PCs. We vectorized FFT kernels using Intel's Streaming SIMD Extensions 2 (SSE2) instructions. We show that a combination of the vectorization and block three-dimensional FFT algorithm improves performance effectively. Performance results of three-dimensional FFTs on a dual Xeon 2.8 GHz PC SMP cluster are reported. We successfully achieved performance of over 5 GFLOPS on a 16-node dual Xeon 2.8 GHz PC SMP cluster. © Springer-Verlag Berlin Heidelberg 2006.