rustytorch

embedded3_sphere

embedded3 item 10b: virtual merging of small cells in the projection (fraction < 0.1 → master = largest active face neighbour; off-stencil links on the fine Poisson level; merged rhs, anchor, mass residual and source scale); static sphere rows within 0.02 %, loads 9.4/10.4 %; stadium falsifier spikes 39–54× below the binary wall (circle 6–8×), energy per event 6–9× lower

2026-09-17 16:41:29 -05:00

overset_common

rtx-cfd: overset P3b — the reclassification impulse located (the fringe ring is a staircase of the interpolated velocities' mass defect) and removed by a converged fringe flux balance (default on): falsifier max spike 594 → 5.50 N/m at the FSI2 step (staircase 6490), 10.95 / 16.79 at dt/2 / dt/4 (12600 / 25600), rms spike 0.07% of the force, far probe 6 (7900), KE per event 4.9e-3 J/m falling with Δt (2.6 fixed)

2026-09-05 19:16:16 -07:00

ale_dgcl.rs

rtx-cfd + rtx-fsi: the added-mass piston — partitioned FSI on the real ALE fluid

2026-08-20 06:10:13 -07:00

ale_piston_channel.rs

rtx-cfd + rtx-fsi: the added-mass piston — partitioned FSI on the real ALE fluid

2026-08-20 06:10:13 -07:00

ale_taylor_green.rs

rtx-cfd: multigrid-PCG projection — 30x faster, same answers — and the CFD1 refinement study

2026-08-20 10:20:25 -07:00

cfd_workflow_tests.rs

rtx-cfd: multigrid-PCG projection — 30x faster, same answers — and the CFD1 refinement study

2026-08-20 10:20:25 -07:00

cuda_kernel_manager_tests.rs

rtx-cfd: rustfmt over the repaired GPU modules and tests

2026-09-16 07:19:50 -05:00

curvilinear_ale.rs

rtx-cfd: PatchConvection::TvdVanAlbada — van Albada deferred correction on the curvilinear predictor (downwind-side linear weight, gradient-ratio r over the face d lengths, far-upwind across the opposite face, boundary faces upwind); annulus MMS orders 2.10/1.69 at 0.24× upwind; cylinder-flag MMS orders 1.98/1.97 (1.06× upwind — diffusion-dominated, recorded); knobs RTX_OVERSET_CFD1_TVD, RTX_OVERSET_MAX_ROUNDS, RTX_CF_SCHEME

2026-09-06 00:21:48 -07:00

curvilinear_loads.rs

rtx-cfd: overset A-P3 — the falsifier plate on the overset (FAILS the registered gates by one order less than the staircase); wall force; composite pressure-level pin; Schwarz stall detection

2026-09-05 04:32:43 -07:00

curvilinear_mesh.rs

rtx-cfd: curvilinear collocated PISO on a structured patch (overset A-P0, WIP) — PatchMesh (right-handed s,n; periodic seam with shift; face metrics), patch generators (TFI, skewed annulus, sheared/varying-skew channels), CSR + Jacobi-BiCGSTAB, the Zang–Street–Koseff incremental step with the node-based 9-point L_f, LSQ gradients, explicit and line-implicit-n predictors, adjustPhi; tests: mesh metrics (5 green), operators exact on linear fields incl. the seam (green), sparse (2 green), MMS ladder (Cartesian 16/32: 1.37–1.39x the staggered error, order 0.83; n=64 stalls at a |du/dt| floor 2e-4 — open, tolerance-scaling hypothesis), annulus/Poiseuille not yet run

2026-09-04 05:00:08 -07:00

curvilinear_mms.rs

rtx-cfd: Robin wall sign pin — a still closed annulus under a uniform pressure above a zero datum: the explicit offset recedes into the body at exactly −p₀/(α(1+g)) (3e-16), the implicit compliant term answers with a pressure DROP (mean 0.17 of p₀, max 0.36) that absorbs the recession (net wall flux 6e-19 of 0.51); the steady MMS pin is blind to the sign of both parts

2026-09-15 11:17:38 -05:00

curvilinear_operators.rs

rtx-cfd: curvilinear collocated PISO on a structured patch (overset A-P0, WIP) — PatchMesh (right-handed s,n; periodic seam with shift; face metrics), patch generators (TFI, skewed annulus, sheared/varying-skew channels), CSR + Jacobi-BiCGSTAB, the Zang–Street–Koseff incremental step with the node-based 9-point L_f, LSQ gradients, explicit and line-implicit-n predictors, adjustPhi; tests: mesh metrics (5 green), operators exact on linear fields incl. the seam (green), sparse (2 green), MMS ladder (Cartesian 16/32: 1.37–1.39x the staggered error, order 0.83; n=64 stalls at a |du/dt| floor 2e-4 — open, tolerance-scaling hypothesis), annulus/Poiseuille not yet run

2026-09-04 05:00:08 -07:00

curvilinear_poiseuille.rs

rtx-cfd/rtx-fsi: overset A-P0 GATED + M1 precision probe — curvilinear collocated PISO: relative-reduction pressure stop (the absolute stop floored |du/dt| at 2e-4 on 64²), line-implicit-n sign fix, adjustPhi; gates: Cartesian reduction 1.37–1.40x the staggered error at orders 0.83/0.90; skewed stretched periodic annulus Stokes orders 2.30/2.06 (explicit and line-implicit), upwind 1.08/0.80; Poiseuille exact to 1e-9 on Cartesian and affine-sheared periodic channels (both diffusion variants), varying-skew channel order 2.02 (v 1.9), cell mass 1e-14; divergence ≤ 1e-11 relative every step; snapshot/restore bit-identical. M1: poisson.rs multigrid hierarchy generic over MgScalar (f32/f64), f64 CG keeps its own fine level; MgPrecision on MultigridParameters/EmbeddedParameters/PisoParameters, set_poisson_precision, harness RTX_FSI2_POISSON_F32 (march + noise probe, printed marker); f64 arm bit-identical in vivo (FSI2 default line-for-line with 08-31), f32 arm holds the noise floor and stall pins and the FSI2 band; poisson_equivalence f32 arm

2026-09-04 12:40:43 -07:00

cylinder_flag_mms.rs

overset mesh: the flat-tip outline (P5-3 option B) — cylinder_flag_outline_deformed_tip / cylinder_flag_patch_deformed{,_from}_tip take the tip's corner radius (t = the recorded semicircle, bit for bit; smaller = the benchmark's flat face between corner arcs sampled at the wall spacing, point count fixed across the deformation, the tip's corners kept off the hull source); pins: corner t reproduces the recorded outline, the 2.5 mm outline has the exact area excess with no collapsed spacing, the O-grid builds straight and at ± 80 mm cold and warm at ny 41/62; harness knob RTX_FSI2O_TIP_CORNER (default 0.01) on the cold and warm builds, printed in both headers; pinned-toolchain fmt on touched crates

2026-09-13 22:22:08 -05:00

embedded3_beltrami.rs

rtx-cfd embedded3 items 4–6: field.rs + step/{mod, predictor, projection} (364/700/419 lines) — the host PISO step re-laid from the verified three_d code; gates HELD: MMS + Poiseuille marches value-identical to the 2D embedded solver at nz=1 over 200 steps; 3D MMS orders 0.88 upwind / 1.61 TVD, div ≤ 5e-9; Beltrami 1.08 / 1.25 with face-averaged data, div−mean ≤ 7e-8; Poiseuille |u−û| ≤ 8e-10 at nz 1 and periodic nz 4

2026-09-17 14:55:18 -05:00

embedded3_cg_device.rs

rtx-cfd embedded3 item 3: e3_cg.cu (FMA off) + poisson::device_cg::{DeviceCg, DevicePcgCache, solve_pcg_device_cached}; gate 3 HELD: device CG = host PCG (9 / 9 iterations, |Δp| ≤ 1.5e-14 relative, run-to-run bit-identical, anchor exact, mean 9e-16)

2026-09-17 14:53:20 -05:00

embedded3_cut_geometry.rs

rtx-cfd embedded3 item 8: body.rs (SDF, surface velocity, normal, samplers: sphere Fibonacci lattice, z-cylinder, extruded 2D body) + cut.rs (Kuhn six-tet apertures/volumes, closure, wall distances); gate 8 HELD: volume/area orders 1.94–2.01, closure ≤ 3e-17, Lipschitz ratio 0.100, Σ ΔV per step 6.2e-4 of the swept volume

2026-09-17 14:58:06 -05:00

embedded3_cylinder_identity.rs

rtx-cfd embedded3 item 9: wall.rs (binary ghost mask: three face families, trilinear stencil with periodic-z wrap, z-weighted least-squares ghost fit, flux compatibility correction; slip walls allowed as touched sides) + loads.rs (surface-stress route with probes, control-volume route with full-span z faces skipped); the step wired (body/mask, predicates, anchor, ghost re-imposition). Gates HELD: CFD1 ny 41 nz 1 CV 15.6156 / surface 15.7126 both to 1e-6 of the 2D record; nz 4 periodic CV 1.1e-6 / surface 4.2e-4; sphere MMS order 0.89, div 1e-8, ghost correction 1.0e-4 → 2.0e-5, both load routes' errors falling (0.153 → 0.115 surface, 0.214 → 0.139 CV)

2026-09-17 15:14:40 -05:00

embedded3_device_step.rs

rtx-cfd embedded3 item 7: e3_step.cu + step::device::{DeviceStep, StepTimers} on the shared runtime (FMA off); gate 7 HELD: device = host ≤ 7e-12 under tight tolerances on MMS/Beltrami/Poiseuille, equal CG counts on every step, periodic planes within 2e-16; the default-tolerance differences are the projection's inner stop

2026-09-17 14:56:46 -05:00

embedded3_embedded_mms.rs

embedded3 item 11: moving bodies (end-of-step mask, fresh-cell refill, space-time cut cell: step-averaged apertures, GCL wall flux, Reynolds-transport momentum), the 3D fresh-cell falsifier (plate / circle / stadium, wall + control-volume routes) and the Lipschitz sweep; ghost wall reproduces the 2D falsifier to the digit; cut wall 5–14× smoother on the circle, gates not met (fresh cell's first step); wall.rs split (impose.rs)

2026-09-17 16:20:35 -05:00

embedded3_falsifier.rs

embedded3 item 11: moving bodies (end-of-step mask, fresh-cell refill, space-time cut cell: step-averaged apertures, GCL wall flux, Reynolds-transport momentum), the 3D fresh-cell falsifier (plate / circle / stadium, wall + control-volume routes) and the Lipschitz sweep; ghost wall reproduces the 2D falsifier to the digit; cut wall 5–14× smoother on the circle, gates not met (fresh cell's first step); wall.rs split (impose.rs)

2026-09-17 16:20:35 -05:00

embedded3_gpu_vcycle.rs

rtx-cfd embedded3 item 2: e3_mg.cu + poisson::{export, device} (one shared CUDA runtime and module loader for embedded3); gate 2 HELD: device V-cycle = host f32 to 4e-7 relative on 96×40×{1,8} and 378×62×62, 4.97 ms per V-cycle at 1.45 M cells incl. transfers

2026-09-17 14:52:18 -05:00

embedded3_mms.rs

rtx-cfd embedded3 items 4–6: field.rs + step/{mod, predictor, projection} (364/700/419 lines) — the host PISO step re-laid from the verified three_d code; gates HELD: MMS + Poiseuille marches value-identical to the 2D embedded solver at nz=1 over 200 steps; 3D MMS orders 0.88 upwind / 1.61 TVD, div ≤ 5e-9; Beltrami 1.08 / 1.25 with face-averaged data, div−mean ≤ 7e-8; Poiseuille |u−û| ≤ 8e-10 at nz 1 and periodic nz 4

2026-09-17 14:55:18 -05:00

embedded3_poiseuille.rs

rtx-cfd embedded3 items 4–6: field.rs + step/{mod, predictor, projection} (364/700/419 lines) — the host PISO step re-laid from the verified three_d code; gates HELD: MMS + Poiseuille marches value-identical to the 2D embedded solver at nz=1 over 200 steps; 3D MMS orders 0.88 upwind / 1.61 TVD, div ≤ 5e-9; Beltrami 1.08 / 1.25 with face-averaged data, div−mean ≤ 7e-8; Poiseuille |u−û| ≤ 8e-10 at nz 1 and periodic nz 4

2026-09-17 14:55:18 -05:00

embedded3_poisson_identity.rs

rtx-cfd embedded3 item 1: the Poisson core as poisson/{problem, hierarchy, pcg} (≤ 385 lines each; the periodic wrap built once into neighbour arrays); gate 1 HELD: nz=1 bit-identical to the 2D solver (lex + red-black, cached/uncached, iterations) and every extrusion case bit-identical to the three_d oracle, planes within 1.4e-11

2026-09-17 14:50:18 -05:00

embedded3_wall_lipschitz.rs

embedded3 item 11: moving bodies (end-of-step mask, fresh-cell refill, space-time cut cell: step-averaged apertures, GCL wall flux, Reynolds-transport momentum), the 3D fresh-cell falsifier (plate / circle / stadium, wall + control-volume routes) and the Lipschitz sweep; ghost wall reproduces the 2D falsifier to the digit; cut wall 5–14× smoother on the circle, gates not met (fresh cell's first step); wall.rs split (impose.rs)

2026-09-17 16:20:35 -05:00

embedded_fresh_cell_falsifier.rs

rtx-cfd/rtx-fsi: every EmbeddedParameters literal carries the smoother field (all test targets of both crates compile)

2026-09-15 23:50:19 -05:00

embedded_mms.rs

rtx-cfd: TVD convection in the embedded predictor — the wake sheds — and Turek–Hron CFD2/CFD3

2026-08-20 11:37:04 -07:00

embedded_moving.rs

rtx-cfd/rtx-fsi: every EmbeddedParameters literal carries the smoother field (all test targets of both crates compile)

2026-09-15 23:50:19 -05:00

error_tests.rs

Initial commit

2026-03-04 00:08:42 +00:00

face_connectivity_tests.rs

Initial commit

2026-03-04 00:08:42 +00:00

ghia_cavity.rs

rtx-cfd: Ghia Re=400 as a quantitative claim — and the stopping-tolerance trap

2026-08-19 23:23:32 -07:00

gpu_kernel_comprehensive_tests.rs

rtx-cfd/rtx-fsi PERF-2 P3-iii: the MarchPlane — lane-table V-cycle kernels (ml_*), the batched apply over K lanes' own operators, the plane rendezvous inside the CG's preconditioner (lane thread-local, CG guard), set_plane_lane/plane_counters; the fsi2_overset_plane driver (K lane threads, one process); G-P0 unit tests: K distinct operators batched = solo apply bit for bit, uneven lanes served exactly

2026-09-16 17:03:51 -05:00

gpu_kernel_tests.rs

rtx-cfd legacy GPU tests: the two point-source Poisson tests expect the sign of ∇²φ = f

2026-09-16 07:36:07 -05:00

gpu_kernels.rs

Initial commit

2026-03-04 00:08:42 +00:00

gpu_reduction_tests.rs

rtx-cfd legacy GPU: kernel outputs were device-buffer CLONES (every write lost) — the buffers are borrowed mutably now; the Poisson kernels keep boundary Dirichlet values; tests: the advection pulse marched 50 steps, the Jacobi budget 20k, the reduction reference in f64

2026-09-16 07:28:42 -05:00

gpu_vcycle_bench.rs

rtx-cfd/rtx-fsi PERF-2 P3-iii: the MarchPlane — lane-table V-cycle kernels (ml_*), the batched apply over K lanes' own operators, the plane rendezvous inside the CG's preconditioner (lane thread-local, CG guard), set_plane_lane/plane_counters; the fsi2_overset_plane driver (K lane threads, one process); G-P0 unit tests: K distinct operators batched = solo apply bit for bit, uneven lanes served exactly

2026-09-16 17:03:51 -05:00

integration_tests.rs

Initial commit

2026-03-04 00:08:42 +00:00

kernels_tests.rs

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

lbm_boundary_tests.rs

rtx-cfd: repair the pressure-velocity coupling, LBM walls and mesh quality

2026-08-19 08:40:09 -07:00

lbm_d2q9_tests.rs

Initial commit

2026-03-04 00:08:42 +00:00

lbm_d3q19_tests.rs

Initial commit

2026-03-04 00:08:42 +00:00

mesh_quality_tests.rs

rtx-cfd: repair the pressure-velocity coupling, LBM walls and mesh quality

2026-08-19 08:40:09 -07:00

mesh_tests.rs

Initial commit

2026-03-04 00:08:42 +00:00

mms_navier_stokes.rs

rtx-cfd: second-order convection by deferred-correction TVD; MMS order 1.84, cavity closes on Ghia

2026-08-19 19:16:48 -07:00

mms_piso.rs

rtx-cfd: multigrid-PCG projection — 30x faster, same answers — and the CFD1 refinement study

2026-08-20 10:20:25 -07:00

overset_added_mass.rs

overset added-mass pin (P5-3): a no-slip cylinder on the moving patch oscillating in a closed box of still fluid, the force fitted over the last two periods — C_m = 1.069 (n = 32) / 1.097 (n = 64) against Stokes's 1.064 plus box blockage: the composite's unsteady pressure response is right, the FSI2 lift excess is not the unsteady term's scale

2026-09-09 18:01:53 -07:00

overset_cfd1.rs

overset mesh: the flat-tip outline (P5-3 option B) — cylinder_flag_outline_deformed_tip / cylinder_flag_patch_deformed{,_from}_tip take the tip's corner radius (t = the recorded semicircle, bit for bit; smaller = the benchmark's flat face between corner arcs sampled at the wall spacing, point count fixed across the deformation, the tip's corners kept off the hull source); pins: corner t reproduces the recorded outline, the 2.5 mm outline has the exact area excess with no collapsed spacing, the O-grid builds straight and at ± 80 mm cold and warm at ny 41/62; harness knob RTX_FSI2O_TIP_CORNER (default 0.01) on the cold and warm builds, printed in both headers; pinned-toolchain fmt on touched crates

2026-09-13 22:22:08 -05:00

overset_cfd23.rs

rtx-cfd/rtx-fsi: every EmbeddedParameters literal carries the smoother field (all test targets of both crates compile)

2026-09-15 23:50:19 -05:00

overset_energy_pin.rs

overset mesh: the flat-tip outline (P5-3 option B) — cylinder_flag_outline_deformed_tip / cylinder_flag_patch_deformed{,_from}_tip take the tip's corner radius (t = the recorded semicircle, bit for bit; smaller = the benchmark's flat face between corner arcs sampled at the wall spacing, point count fixed across the deformation, the tip's corners kept off the hull source); pins: corner t reproduces the recorded outline, the 2.5 mm outline has the exact area excess with no collapsed spacing, the O-grid builds straight and at ± 80 mm cold and warm at ny 41/62; harness knob RTX_FSI2O_TIP_CORNER (default 0.01) on the cold and warm builds, printed in both headers; pinned-toolchain fmt on touched crates

2026-09-13 22:22:08 -05:00

overset_falsifier.rs

rtx-cfd: overset P3b — the reclassification impulse located (the fringe ring is a staircase of the interpolated velocities' mass defect) and removed by a converged fringe flux balance (default on): falsifier max spike 594 → 5.50 N/m at the FSI2 step (staircase 6490), 10.95 / 16.79 at dt/2 / dt/4 (12600 / 25600), rms spike 0.07% of the force, far probe 6 (7900), KE per event 4.9e-3 J/m falling with Δt (2.6 fixed)

2026-09-05 19:16:16 -07:00

overset_halves.rs

rtx-cfd: PatchConvection::TvdVanAlbada — van Albada deferred correction on the curvilinear predictor (downwind-side linear weight, gradient-ratio r over the face d lengths, far-upwind across the opposite face, boundary faces upwind); annulus MMS orders 2.10/1.69 at 0.24× upwind; cylinder-flag MMS orders 1.98/1.97 (1.06× upwind — diffusion-dominated, recorded); knobs RTX_OVERSET_CFD1_TVD, RTX_OVERSET_MAX_ROUNDS, RTX_CF_SCHEME

2026-09-06 00:21:48 -07:00

overset_interp.rs

rtx-cfd: overset A-P2 — the patch overlaps the background (OversetPisoSolver), gated S1–S5

2026-09-04 19:24:13 -07:00

overset_mms.rs

rtx-cfd: overset P3b — the reclassification impulse located (the fringe ring is a staircase of the interpolated velocities' mass defect) and removed by a converged fringe flux balance (default on): falsifier max spike 594 → 5.50 N/m at the FSI2 step (staircase 6490), 10.95 / 16.79 at dt/2 / dt/4 (12600 / 25600), rms spike 0.07% of the force, far probe 6 (7900), KE per event 4.9e-3 J/m falling with Δt (2.6 fixed)

2026-09-05 19:16:16 -07:00

overset_moving.rs

rtx-cfd: overset A-P2 — the patch overlaps the background (OversetPisoSolver), gated S1–S5

2026-09-04 19:24:13 -07:00

patch_cylinder_flag_deformed.rs

overset mesh: the flat-tip outline (P5-3 option B) — cylinder_flag_outline_deformed_tip / cylinder_flag_patch_deformed{,_from}_tip take the tip's corner radius (t = the recorded semicircle, bit for bit; smaller = the benchmark's flat face between corner arcs sampled at the wall spacing, point count fixed across the deformation, the tip's corners kept off the hull source); pins: corner t reproduces the recorded outline, the 2.5 mm outline has the exact area excess with no collapsed spacing, the O-grid builds straight and at ± 80 mm cold and warm at ny 41/62; harness knob RTX_FSI2O_TIP_CORNER (default 0.01) on the cold and warm builds, printed in both headers; pinned-toolchain fmt on touched crates

2026-09-13 22:22:08 -05:00

patch_cylinder_flag_flat_tip.rs

rtx-cfd: the deformed-tip outline chooses the flat / semicircle branch against the UNDEFORMED half-thickness — at the semicircle setting the deformed tip's radius breathes by nanometres and flipped the topology (143 → 144 points) within the first steps of the P6-b ny 41 cap-12 release at every α; pin: the point count is fixed under ± 1e-6 thickness breathing at h 10 / 6.6 mm and ny 41, semicircle and flat

2026-09-15 11:13:55 -05:00

patch_cylinder_flag.rs

rtx-cfd: overset P4-0 — the O-grid around the Turek–Hron rigid body (cylinder + flag), gated

2026-09-05 19:50:14 -07:00

patch_stadium.rs

rtx-cfd: overset A-P3 — the falsifier plate on the overset (FAILS the registered gates by one order less than the staircase); wall force; composite pressure-level pin; Schwarz stall detection

2026-09-05 04:32:43 -07:00

poiseuille.rs

rtx-cfd: Poiseuille closed-form validation with exact-zero assertions

2026-08-19 19:32:37 -07:00

poisson_cache_exact.rs

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

2026-09-15 23:30:53 -05:00

poisson_equivalence.rs

rtx-cfd/rtx-fsi: every EmbeddedParameters literal carries the smoother field (all test targets of both crates compile)

2026-09-15 23:50:19 -05:00

poisson_redblack.rs

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

2026-09-15 23:59:29 -05:00

polyline_index_exact.rs

PERF-2 P1: exact chunked polyline index for the O-grid's sliding outer ring — PolylineIndex::nearest returns nearest_on_polyline's point bit for bit (same segments, same order, same strict minimum; chunks skipped only when their box is farther than the best by more than 1e-12 relative), used by the Winslow sweep and the two ring projections; pin: 0 mismatches over 39,864 queries on a 3,166-point rounded outline including vertices, mid-points and ties

2026-09-15 23:08:09 -05:00

refinement_tests.rs

rtx-fea: repair the eigensolver, and stop the suite lying about the rest

2026-08-19 07:46:01 -07:00

simple_tests.rs

rtx-cfd: second-order convection by deferred-correction TVD; MMS order 1.84, cavity closes on Ghia

2026-08-19 19:16:48 -07:00

taylor_green.rs

rtx-cfd: multigrid-PCG projection — 30x faster, same answers — and the CFD1 refinement study

2026-08-20 10:20:25 -07:00

three_d_beltrami.rs

rtx-cfd 3D Stage 1 item 4: three_d::{FlowField3D, piso_host::Piso3Solver} — the 2D embedded predictor/projection transcribed with the z terms appended (u/v/w predictors, six sides incl. periodic z, TVD, the apertured-ready projection on PoissonProblem3D); gates 4/5/6 HELD: MMS + Poiseuille marches value-identical to the 2D embedded solver (multigrid) over 200 steps at nz=1; 3D MMS orders 0.88 upwind / 1.61 TVD, div 1e-9; Beltrami orders 1.08/1.25 with face-averaged data (box compatible to 1e-12); Poiseuille |u−û| ≤ 2e-10, |v|,|w| ≤ 4e-10, p spread ≤ 5e-8 at nz 1 and periodic nz 4

2026-09-17 11:31:30 -05:00

three_d_cg_device.rs

rtx-cfd 3D Stage 1 item 3: cg3.cu + DeviceCg3 — the f64 CG entirely on the device (run_pcg's control flow: true-residual stop and resync, breakdown guard, mean projection, anchor shift; fixed-order block reductions, no atomics; the device V-cycle as preconditioner; DevicePcgCache3); gate 3 HELD: iterations = host, |Δp| ≤ 2e-14 relative, run-to-run bit-identical, singular box anchor exact / mean 2e-15

2026-09-17 11:18:52 -05:00

three_d_cut_geometry.rs

rtx-cfd 3D Stage 1 item 6: three_d::geometry::{Body3, CutGeometry3} — nodal signed distance, face apertures and cell volumes exact for the linear interpolant on a fixed Kuhn six-tet split (consistent across faces), the wall polygon by closure, face-centre wall distances. Gate 7 HELD: sphere/z-cylinder volume and area orders 1.94–2.01, closure 1e-17; continuity: the largest neighbour change falls 10× for a 10× finer sweep (ratio 0.100); translating-sphere Σ ΔV per step MEASURED at 6e-4 of the swept volume (the 'to rounding' clause was wrong and is replaced by the number)

2026-09-17 11:49:04 -05:00

three_d_device_step.rs

rtx-cfd 3D Stage 1 item 5: piso3.cu + three_d::piso_device::Piso3Device — the PISO step device-resident (predictors compiled without FMA contraction = the host's arithmetic, per-side boundary tables, divergence/correct/add_p kernels with fixed-order partials, the device CG); poisson_operator/boundary_tables/source_tables/anchor_cell/inner_stop split out of the host solver; StepTimers3 (RTX_PROFILE). Gates 4–6 on the device HELD: MMS 9e-16 (upwind) / 7e-16 (TVD), Beltrami 3.3e-12, Poiseuille 2e-15 with periodic planes equal to 2e-16 (tight tolerances; default-tolerance differences = the projection's inner stop); 55 ms per step at 378×62×62 (predictor 22, poisson 32, apply 2)

2026-09-17 11:44:04 -05:00

three_d_gpu_vcycle_bench.rs

rtx-cfd 3D Stage 1 item 2: mg3_vcycle.cu (seven-point red-black half-sweep, residual, coarsest; top/bot neighbour arrays carry the periodic wrap), LevelExport3/export_hierarchy3/vcycle_f32_reference3, DeviceVcycle3 (the K=1 sequence); gate 2 HELD: device = host f32 V-cycle to 4e-7 relative on 96×40×{1,8} (periodic and walls) and 378×62×62; 4.88 ms per V-cycle at 1.45 M cells incl. transfers

2026-09-17 11:15:03 -05:00

three_d_mms.rs

rtx-cfd 3D Stage 1 item 4: three_d::{FlowField3D, piso_host::Piso3Solver} — the 2D embedded predictor/projection transcribed with the z terms appended (u/v/w predictors, six sides incl. periodic z, TVD, the apertured-ready projection on PoissonProblem3D); gates 4/5/6 HELD: MMS + Poiseuille marches value-identical to the 2D embedded solver (multigrid) over 200 steps at nz=1; 3D MMS orders 0.88 upwind / 1.61 TVD, div 1e-9; Beltrami orders 1.08/1.25 with face-averaged data (box compatible to 1e-12); Poiseuille |u−û| ≤ 2e-10, |v|,|w| ≤ 4e-10, p spread ≤ 5e-8 at nz 1 and periodic nz 4

2026-09-17 11:31:30 -05:00

three_d_poiseuille_identity.rs

rtx-cfd 3D Stage 1 item 4: three_d::{FlowField3D, piso_host::Piso3Solver} — the 2D embedded predictor/projection transcribed with the z terms appended (u/v/w predictors, six sides incl. periodic z, TVD, the apertured-ready projection on PoissonProblem3D); gates 4/5/6 HELD: MMS + Poiseuille marches value-identical to the 2D embedded solver (multigrid) over 200 steps at nz=1; 3D MMS orders 0.88 upwind / 1.61 TVD, div 1e-9; Beltrami orders 1.08/1.25 with face-averaged data (box compatible to 1e-12); Poiseuille |u−û| ≤ 2e-10, |v|,|w| ≤ 4e-10, p spread ≤ 5e-8 at nz 1 and periodic nz 4

2026-09-17 11:31:30 -05:00

three_d_poisson_identity.rs

rtx-cfd three_d: ignore reasons on the probes (clippy)

2026-09-17 11:12:23 -05:00

traits_tests.rs

Initial commit

2026-03-04 00:08:42 +00:00

turek_hron_cfd23.rs

rtx-cfd/rtx-fsi: every EmbeddedParameters literal carries the smoother field (all test targets of both crates compile)

2026-09-15 23:50:19 -05:00

turek_hron_cfd.rs

rtx-cfd/rtx-fsi: every EmbeddedParameters literal carries the smoother field (all test targets of both crates compile)

2026-09-15 23:50:19 -05:00