Work

Analysis and optimization of gyrokinetic toroidal simulations on homogenous and heterogenous platforms

Year: 2013

Type: article

Abstract: The Gyrokinetic Toroidal Code (GTC) uses the particle-in-cell method to efficiently simulate plasma microturbulence. This work presents novel analysis and optimization techniques to enhance the performance of GTC on large-scale machines. We introduce cell access analysis to better manage locality vs. synchronization tradeoffs on CPU and GPU-based architectures. Our optimized hybrid parallel implementation of GTC uses MPI, OpenMP, and NVIDIA CUDA, achieves up to a 2× speedup over the reference Fortran version on multiple parallel systems, and scales efficiently to tens of thousands of cores.

Source: The International Journal of High Performance Computing Applications

DOI: 10.1177/1094342013492446

Authors: Khaled Z Ibrahim, Kamesh Madduri, Samuel Williams, Bei Wang, Stephane Ethier, Leonid Oliker

Institutions: Lawrence Berkeley National Laboratory, Pennsylvania State University, Princeton University, Princeton Plasma Physics Laboratory

Language: English

Topic: Parallel Computing and Optimization Techniques

Subfield: Hardware and Architecture

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2147394477

FWCI: 5.599

Cites: 28

Cited by: 17

Related to: 10