Asynchronous communication in spectral-element and discontinuous Galerkin methods for atmospheric dynamics - A case study using the High-Order Methods Modeling Environment (HOMME-homme-dg-branch)

The scalability of computational applications on current and next-generation supercomputers is increasingly limited by the cost of inter-process communication. We implement non-blocking asynchronous communication in the High-Order Methods Modeling Environment for the time integration of the hydrostatic fluid equations using both the spectral-element and discontinuous Galerkin methods. This allows

Comparison of dynamical cores for NWP models : Comparison of COSMO and Dune

We present a range of numerical tests comparing the dynamical cores of the operationally used numerical weather prediction (NWP) model COSMO and the university code Dune, focusing on their efficiency and accuracy for solving benchmark test cases for NWP. The dynamical core of COSMO is based on a finite difference method whereas the Dune core is based on a Discontinuous Galerkin method. Both dynami

A fast parallel solver for the forward problem in electrical impedance tomography

Electrical impedance tomography (EIT) is a noninvasive imaging modality, where imperceptible currents are applied to the skin and the resulting surface voltages are measured. It has the potential to distinguish between ischaemic and haemorrhagic stroke with a portable and inexpensive device. The image reconstruction relies on an accurate forward model of the experimental setup. Because of the rela

The DUNE framework : Basic concepts and recent developments

This paper presents the basic concepts and the module structure of the Distributed and Unified Numerics Environment and reflects on recent developments and general changes that happened since the release of the first DUNE version in 2007 and the main papers describing that state Bastian etal. (2008a, 2008b). This discussion is accompanied with a description of various advanced features, such as co

Pretreatment of an alkaline wheat bran extract to increase flux during hemicellulose isolation by ultrafiltration

Reducing the energy requirement in microfiltration of milk with back-pulsing – From lab scale to pilot scale

The Distributed and Unified Numerics Environment, Version 2.4

The DUNE-ALUGrid Module.

Horizontally Explicit and Vertically Implicit (HEVI) Time Discretization Scheme for a Discontinuous Galerkin Nonhydrostatic Model

On discontinuous Galerkin approach for atmospheric flow in the mesoscale with and without moisture

Compact and stable Discontinuous Galerkin methods for convection-diffusion problems.

A Generic Stabilization Approach for Higher Order Discontinuous Galerkin Methods for Convection Dominated Problems

A Generic Interface for Parallel and Adaptive Scientific Computing: Abstraction Principles and the DUNE-FEM Module

A Generic Grid Interface for Parallel and Adaptive Scientific Computing. Part II: Implementation and Tests in DUNE

A Generic Grid Interface for Parallel and Adaptive Scientific Computing. Part I: Abstract Framework

A Bottom-up approach to Grid-Computing at a University: the Black-Forest-Grid Initiative

Local adaptive methods for convection dominated problems.

On Efficient Time Stepping using the Discontinuous Galerkin Method for Numerical Weather Prediction

A High-Order Multiscale Global Atmospheric Model

The DUNE-FEM-DG module