PERF-2 P1.1: the multigrid-PCG's prepared operator (hierarchy, f64 fine level, active cells, components) cached on the embedded solver and reused while the operator is bit-identical (an exact key over the coefficient bit patterns, the mask and the hierarchy parameters); solve_multigrid_pcg_cached gives the uncached solve's answer bit for bit (pin poisson_cache_exact.rs: five right-hand sides on one operator, a one-coefficient miss, both precisions); the CG driver split into Prepared::build + run_pcg

Co-Authored-By: Claude Fable 5.1 <[email protected]> Claude-Session: https://claude.ai/code/session_01YJPeT6WA2e7YvAnS875AHL
2026-09-15 23:30:53 -05:00
parent 01830e5c8d
commit 79c18def32
5 changed files with 294 additions and 15 deletions
@@ -65,7 +65,8 @@ pub use piso::{PisoParameters, PisoResult, PisoSolver};
 #[cfg(feature = "cuda")]
 pub use piso_gpu::PisoGpuSolver;
 pub use poisson::{
-    MgPrecision, MultigridParameters, PoissonProblem, PoissonSolution, PoissonSolverKind,
+    MgPrecision, MultigridParameters, PcgCache, PoissonProblem, PoissonSolution, PoissonSolverKind,
+    solve_multigrid_pcg, solve_multigrid_pcg_cached,
 };
 pub use polygon_sdf::PolygonSdf;
 pub use simple::{ConvectionScheme, SimpleParameters, SimpleResult, SimpleSolver};