rtx-cfd CUDA Poisson kernels: solve ∇²φ = f as documented (the updates subtracted the source with the wrong sign); the Jacobi test's stop is absolute on a source of size 2π²

2026-09-16 07:34:28 -05:00
parent 52fd40f8f2
commit eba2f61ddf
2 changed files with 5 additions and 5 deletions
@@ -213,7 +213,7 @@ mod cuda_tests {
        // Jacobi needs O(n²) sweeps on this grid and its residual floor in f32 sits
        // above 1e-6; the accuracy check below is the pin, the stop is loose.
        let max_iterations = 20_000;
-        let tolerance = 1e-4;
+        let tolerance = 1e-2; // absolute, on a source of size 2π²
        let iterations = poisson_kernel.solve_2d(
            &mut d_phi,
            &d_source,