15 citations · 49 across the 6 of their papers we have counts for
6 papers
A scalable high-order multigrid-FFT Poisson solver for unbounded domains on adaptive multiresolution grids
Gilles Poncelet, Jonathan Lambrechts, Thomas Gillis +1
Multigrid solvers are among the most efficient methods for solving the Poisson equation, which is ubiquitous in computational physics. For example, in the context of incompressible…
Quantifying the Performance Benefits of Partitioned Communication in MPI
Thomas Gillis, Ken Raffenetti, Hui Zhou +2
Partitioned communication was introduced in MPI 4.0 as a user-friendly interface to support pipelined communication patterns, particularly common in the context of MPI+threads. It…
FLUPS -- a flexible and performant massively parallel Fourier transform library
Pierre Balty, Philippe Chatelain, Thomas Gillis
Massively parallel Fourier transforms are widely used in computational sciences, and specifically in computational fluid dynamics which involves unbounded Poisson problems. In prac…
MURPHY -- A scalable multiresolution framework for scientific computing on 3D block-structured collocated grids
Thomas Gillis, Wim M. van Rees
We present the derivation, implementation, and analysis of a multiresolution adaptive grid framework for numerical simulations on octree-based 3D block-structured collocated grids…
An immersed interface method for the 2D vorticity-velocity Navier-Stokes equations with multiple bodies
James Gabbard, Thomas Gillis, Philippe Chatelain +1
We present an immersed interface method for the vorticity-velocity form of the 2D Navier Stokes equations that directly addresses challenges posed by multiply connected domains, no…
FLUPS: a Fourier-based Library of Unbounded Poisson Solvers
Denis-Gabriel Caprace, Thomas Gillis, Philippe Chatelain
A Fourier-based Library of Unbounded Poisson Solvers (FLUPS) for 2D and 3D homogeneous distributed grids is presented. It is designed to handle every possible combination of period…