Presentation
Performance Analysis and Optimizations of ERO2.0 Fusion Code
DescriptionIn this paper, we present the thorough performance analysis of a highly parallel Monte Carlo code for modeling global erosion and redeposition in fusion devices, ERO2.0. The study shows that the main bottleneck preventing the code from efficiently using the resources is the load imbalance at different levels. Load imbalance is inherent to the problem being solved, particle transport, and deposition. Based on the findings of the analysis, we also describe the optimizations implemented on the code to improve its performance on HPC clusters. The proposed optimizations use MPI and OpenMP features, making them portable across architectures and achieving a 3.34x speedup.
TimeMonday, June 317:00 - 17:30 CEST
LocationHG E 1.1
SessionAP1C - ACM Papers Session 1C
Session Chair
Event Type
Paper
Physics
