Multi GPU Runtime Benchmarks for the H12 2D Urban Flood Model

This repository contains benchmark logs for a GPU-accelerated H12 2-D urban flood model. The model supports CPU-only and GPU-enabled execution, selectable via a compile-time option. Benchmarks were conducted at two study areas:• Portland, USA (9.0 km²) with high-resolution experiments at 1 m, 2 m and 4 m.• Downstream Han River basin, Republic of Korea (2,386 km²) with large-domain experiments at 10 m and 20 m.Each dataset records a one-hour simulation under rainfall forcing. Logs are organised by basin, spatial resolution and run configuration.