Petascale Atmospheric General Circulation Models for CCSM Henry Tufo NCAR

The High-Order Method Modeling Environment (HOMME), developed by the Computational and Information Systems Laboratory at NCAR in collaboration with the Computational Science Center at the University of Colorado, is a vehicle to investigate using high-order element based methods to build conservative and accurate dynamical cores. Currently, HOMME employs the discontinuous Galerkin and spectral element methods on a cubed-sphere tiled with quadrilateral elements, is capable of solving the shallow water equations and the dry/moist primitive equations, and has been shown to scale to 32,768 processors of an IBM BlueGene/L system.

The ultimate goal for HOMME is to provide the atmospheric science community a framework upon which to build a new generation of atmospheric general circulation models for CCSM based on high-order numerical methods that efficiently scale to hundreds-of-thousands of processors, achieve scientifically useful integration rates, provide monotonic and mass conserving transport of multiple species, and can easily couple to community physics packages.