Work

A piecewise-hierarchical particle count method suitable for the implementation of the unified gas-kinetic wave–particle method on graphics processing unit devices

Year: 2024

Type: article

Abstract: The particle counting part in the unified gas-kinetic wave–particle method on graphics processing unit (GPU) devices is computationally intensive. This paper introduces a piecewise-hierarchical (P-H) particle counting strategy tailored for the Single Instruction Multiple Threads architecture, which leverages GPU memory hierarchy to reduce access conflicts. The strategy was evaluated based on throughput, roofline performance, and computation time metrics. Compared to the global counting strategy, the P-H approach achieved a 3.37× speedup for the particle counting kernel, and the overall program experienced a performance boost of more than 30%.

Source: Physics of Fluids

DOI: 10.1063/5.0227425

Authors: Hang Yu, Wenjia Xie, Weijie Ren, Zhengyu Tian

Institution: National University of Defense Technology

Language: English

Topic: Parallel Computing and Optimization Techniques

Subfield: Hardware and Architecture

Field: Computer Science

Domain: Physical Sciences

Open Access status: hybrid

Funders: National Natural Science Foundation of China, Natural Science Foundation of Hunan Province

Awards: G1677069260, G2725217413, G8723681148