Early (~1985, see below) lattice field theories used FFT for accelerating simulations. My understanding is that it does not parallel well, so nobody uses it anymore. Langevin simulations of lattice field theories G. G. Batrouni, G. R. Katz, A. S. Kronfeld, G. P. Lepage, B. Svetitsky, and K. G. Wilson Phys. Rev. D 32, 2736 – Published 15 November 1985 ABSTRACT We present a new analysis of Langevin simulation techniques for lattice field theories, including a general discussion of errors and algorithm speed. We introduce Fourier techniques that greatly accelerate simulations on large lattices. We also introduce a new technique for including quark vacuum-polarization corrections that admits any number of flavors, odd or even, without the need for nested Monte Carlo calculations. Our analysis is supported by a variety of numerical experiments. DOI:https://doi.org/10.1103/PhysRevD.32.2736

On Dec 20, 2019, at 4:57 PM, Habib, Salman <[email protected]> wrote:

Hi Everyone,

As a parting shot, is there any interest in parallel FFTs in applications of interest to CPS?

There's a bunch of activity in this space and I am interested in collecting all possible use cases.

Thanks!

Salman

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