Omar SobhandClaude Opus 5.5 860f5bb37f R8-g: sparse supernodal LDLt for the Newton tangent (default off) ...

rtx_fea::solvers::SparseLdlt: nested-dissection ordering, etree,
fundamental supernodes, multifrontal numeric factorisation (blocked
LDLt, matrixmultiply gemm, rayon over subtrees, bit-deterministic at
any thread count), symbolic analysis reused while the pattern holds.

NonlinearDynamicStepper: TangentSolver::{BandedLu (default, unchanged
float for float), SparseLdlt { reuse }} via with_tangent_solver or
RTX_FEA_TANGENT=sparse[:K]; fixed-pattern CSR assembled from parallel
element evaluations (forces summed in the banded path's order);
optional modified Newton (factor reuse). The per-element kernel is
factored out of assemble() unchanged.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

2026-09-25 22:28:53 -05:00

..

comprehensive_tdd_tests.rs

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

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

cuda_interface_tdd.rs

Initial commit

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

dynamic_closed_form.rs

solvers: near-wall momentum, Newmark dynamics, QM6, and MMS across elements

2026-08-19 15:39:20 -07:00

ecsw_mor.rs

rtx-fea: mor gains total-Lagrangian operators and a held-out ECSW residual

2026-08-29 15:01:09 -05:00

eigenvalue_closed_form.rs

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

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

element_matrices_physical.rs

rtx-fea: make the analysis stack produce physics, validated against closed form

2026-08-19 08:10:57 -07:00

element_type_methods_tdd.rs

Initial commit

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

fictitious_mass.rs

P6-b: the fictitious added mass for the partitioned loop — rtx-fea NonlinearDynamicStepper::set_added_lumped_mass (a lumped per-DOF mass in the Newmark inertial residual and effective tangent, never the consistent mass or the rest state; zero = the plain stepper bit for bit) with its pin (compensated step reproduces the plain step to 2.5e-9, uncompensated moves it 11 %); the FSI2 overset harness carries RTX_FSI2O_FICT_MASS=α (α × ρ_f π (c/2)² spread over the wetted nodes) and adds the compensating load M_f ü_k of the previous subiterate to every structure solve (predictor and passes), printed in the header

2026-09-15 08:30:55 -05:00

flag3d_structure.rs

R8-b: pin the free-lateral-face path (CSM1 strip, span 0.02)

2026-09-25 18:26:01 -05:00

hexahedron_finite_element_tdd.rs

rtx-fea: repair the element library; the crate is now green with no quarantine

2026-08-19 08:21:58 -07:00

implementation_tests.rs

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

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

incompatible_modes.rs

solvers: near-wall momentum, Newmark dynamics, QM6, and MMS across elements

2026-08-19 15:39:20 -07:00

integration_tests.rs

rtx-fea: repair the element library; the crate is now green with no quarantine

2026-08-19 08:21:58 -07:00

kernel_tdd_tests.rs

Initial commit

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

missing_methods_tdd.rs

Initial commit

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

mms_elastostatics.rs

solvers: near-wall momentum, Newmark dynamics, QM6, and MMS across elements

2026-08-19 15:39:20 -07:00

modal_closed_form.rs

rtx-fea: QM6 as an opt-in bending path; cantilever pinned to Euler-Bernoulli directly

2026-08-19 19:47:25 -07:00

newton_rescue.rs

rtx-fea: banded LU replaces the dense factorization on the Newton tangent — the march's cost center, fixed

2026-08-29 23:20:50 -05:00

nonlinear_newmark_csm3.rs

rtx-fea + rtx-cfd: the single-step seams FSI2 stands on

2026-08-20 20:00:49 -07:00

nonlinear_static.rs

rtx-fea: wire NonlinearStaticAnalysis — Newton on the consistent tangent, MMS-verified at second order

2026-08-19 19:44:08 -07:00

pyramid_finite_element_tdd.rs

rtx-fea: repair the element library; the crate is now green with no quarantine

2026-08-19 08:21:58 -07:00

quadrature_reference_measure.rs

solvers: near-wall momentum, Newmark dynamics, QM6, and MMS across elements

2026-08-19 15:39:20 -07:00

quadrilateral9_finite_element_tdd.rs

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

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

reduced_newmark.rs

rtx-fea: reduced Newmark (mor::dynamic) + the phase-4a offline replay — the ≥10x gate is REFUTED by measurement at the validated resolution

2026-08-30 07:07:49 -05:00

shape_function_invariants.rs

rtx-fea: repair the element library; the crate is now green with no quarantine

2026-08-19 08:21:58 -07:00

sparse_matrix_methods_tdd.rs

Initial commit

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

sparse_matrix_operations_tdd.rs

Initial commit

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

sparse_tangent_bench.rs

R8-g: sparse supernodal LDLt for the Newton tangent (default off)

2026-09-25 22:28:53 -05:00

sparse_tangent.rs

R8-g: sparse supernodal LDLt for the Newton tangent (default off)

2026-09-25 22:28:53 -05:00

standalone_test.rs

rtx-fea: repair the element library; the crate is now green with no quarantine

2026-08-19 08:21:58 -07:00

total_lagrangian_svk.rs

rtx-cfd + rtx-fea: embedded-boundary PISO and total-Lagrangian SVK — the first two Turek–Hron rungs

2026-08-20 08:51:32 -07:00

triangle3_finite_element_tdd.rs

Initial commit

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