Tag
halo-exchange
- Jun 22, 2026 Halo Exchange and the Surface-to-Volume Tax on Domain Decomposition How ghost layers turn a stencil update into communication, why block decompositions beat slabs at scale, and where the ratio stops paying. scientific computing
- Jan 18, 2025 Tiled Stencils and Shared Memory Halos How an overlapping tile plus a barrier turns repeated global reads into repeated shared-memory reads, how halo overhead scales with tile size, and what register blocking adds. gpu computing