HORIZON: Accelerated General Relativistic Magnetohydrodynamics
arXiv:1102.5202
Abstract
We present Horizon, a new graphics processing unit (GPU)-accelerated code to solve the equations of general relativistic magnetohydrodynamics in a given spacetime. We evaluate the code in several test cases, including magnetized Riemann problems and rapidly rotating neutron stars, and measure the performance benefits of the GPU acceleration in comparison to our CPU-based code Thor. We find substantial performance gains in comparison to a quad-core CPU both in single- and double-precision accuracy, and discuss these findings in the context of future numerical modeling efforts.
18 pages, 10 figures
References in corpus (7)
- GRMHD in axisymmetric dynamical spacetimes: the X-ECHO code
- Stability of general-relativistic accretion disks
- Astrophysical Supercomputing with GPUs: Critical Decisions for Early Adopters
- RAISHIN: A High-Resolution Three-Dimensional General Relativistic Magnetohydrodynamics Code
- Magnetohydrodynamics on Heterogeneous architectures: a performance comparison
- An Exploration of OpenCL for a Numerical Relativity Application
- Efficient magnetohydrodynamic simulations on graphics processing units with CUDA