PERF-2 P2: the red-black colour maps, the residual and the V-cycle's per-level maps on rayon threads (MultigridParameters::threads; RTX_THREADS in the harness; rtx_cfd::configure_threads) — each colour's values computed from the unchanged other colour into a scratch and written back, the L1 sum in the serial order: bit-identical to the serial red-black (pin: 4 right-hand sides at 4 threads); the coarsest level stays serial; no effect on the lexicographic regime

Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01YJPeT6WA2e7YvAnS875AHL
2026-09-15 23:59:29 -05:00
parent 364766a54a
commit 7f144e0005
7 changed files with 164 additions and 13 deletions
@@ -66,7 +66,7 @@ pub use piso::{PisoParameters, PisoResult, PisoSolver};
 pub use piso_gpu::PisoGpuSolver;
 pub use poisson::{
    MgPrecision, MgSmoother, MultigridParameters, PcgCache, PoissonProblem, PoissonSolution,
-    PoissonSolverKind, solve_multigrid_pcg, solve_multigrid_pcg_cached,
+    PoissonSolverKind, configure_threads, solve_multigrid_pcg, solve_multigrid_pcg_cached,
 };
 pub use polygon_sdf::PolygonSdf;
 pub use simple::{ConvectionScheme, SimpleParameters, SimpleResult, SimpleSolver};