Scaling of a Fast Fourier Transform and a Pseudo-spectral Fluid Solver up to 196608 cores

Anando G. Chatterjee, Mahendra K. Verma, Abhishek Kumar +3

In this paper we present scaling results of a FFT library, FFTK, and a pseudospectral code, Tarang, on grid resolutions up to $8192^3$ grid using 65536 cores of Blue Gene/P and 196…