Peter D. Sharpe

PhysicsNeMo-Mesh stores a simulation case as a GPU-native mesh with named boundaries and prescribed condition values, moving preprocessing from dataset curation to load time at each training step. On one x86 machine with local NVMe, a whole-case load is 88 times faster than reading VTK files; on one GB200, mesh operations run 6.2 to 1068 times faster than threaded VTK, and overlapped with training, preprocessing costs 2.1% of throughput for a 6.0M-parameter Transolver. In a synthetic heat-conduction study where geometry and wall conditions both vary, per-boundary conditions cut error from the geometry-only floor to 0.038–0.066.

PhysicsNeMo-Mesh stores a simulation case as a GPU-native mesh with named boundaries and prescribed condition values, moving preprocessing from dataset curation to load time at each training step. On one x86 machine with local NVMe, a whole-case load is 88 times faster than reading VTK files; on one GB200, mesh operations run 6.2 to 1068 times faster than threaded VTK, and overlapped with training, preprocessing costs 2.1% of throughput for a 6.0M-parameter Transolver. In a synthetic heat-conduction study where geometry and wall conditions both vary, per-boundary conditions cut error from the geometry-only floor to 0.038–0.066.