Monthly issue metrics report

[julesghub]

Issue Metrics

Metric	Average	Median	90th percentile
Time to first response	14 days, 7:15:21	17 days, 1:24:54	19 days, 1:37:35
Time to first review	None	None	None
Time to close	9 days, 0:01:07	6 days, 18:01:42	18 days, 5:46:00
Time to answer	None	None	None

Metric	Count
Number of items that remain open	16
Number of items closed	68
Total number of items created	84

Title	URL	Assignee	Author	Time to first response	Time to first review	Time to close	Time to answer
multiplier_schur_pc: verify or remove — it is read, but no observable responds to it	underworldcode/underworld3#486	None	lmoresi	None	None	13 days, 3:32:13	None
A warning is not observability: 10 of 12 preconditioner fallbacks leave no readable state	underworldcode/underworld3#484	None	lmoresi	None	None	13 days, 9:12:56	None
Stokes and Stokes_Constrained disagree about which solver options are reachable, in opposite directions	underworldcode/underworld3#483	None	lmoresi	None	None	13 days, 9:13:19	None
Geometric multigrid is unreachable for every single-field solver, even when explicitly requested (the #276 lockout)	underworldcode/underworld3#478	None	lmoresi	None	None	13 days, 22:45:05	None
fieldsplit_velocity_ksp_rtol and fieldsplit_pressure_ksp_rtol are silently un-settable — solve() clobbers them every call	underworldcode/underworld3#477	None	lmoresi	None	None	3 days, 20:44:08	None
yield_continuation: the documented cold-start guarantee does not hold, and the step control is effectively one-shot	underworldcode/underworld3#473	None	lmoresi	None	None	None	None
shear_viscosity_min: the floor's rounding scale is tied to yield_mode (and the VEP path silently skips it)	underworldcode/underworld3#472	None	lmoresi	None	None	3 days, 22:22:33	None
Stale rotated free-slip datum guard tests in test_0641 (nonzero datum is now implemented, #458)	underworldcode/underworld3#470	None	lmoresi	None	None	1 day, 3:54:07	None
custom-P FMG smoother has drifted from the native FMG bundle (richardson vs gmres, and an accidental iteration count)	underworldcode/underworld3#468	None	lmoresi	None	None	1 day, 4:39:33	None
Rotated free-slip silently ignores a mesh-owned custom-FMG hierarchy (adapt children fall back to GAMG)	underworldcode/underworld3#467	None	lmoresi	None	None	1 day, 4:45:19	None
Block-constrained Stokes combined with rotated free-slip is silently unguarded	underworldcode/underworld3#464	None	lmoresi	None	None	19 days, 1:34:15	None
TransverseIsotropicVEPFlowModel.viscosity discards the yield-limited eta_1	underworldcode/underworld3#463	None	lmoresi	None	None	14 days, 9:56:01	None
CI: intermittent MPI/UCX init abort in the import smoke test (Azure runner, ud_verbs/mana_0)	underworldcode/underworld3#461	None	lmoresi	None	None	15 days, 13:56:35	None
2D boundary-flux recovery: degree-3 traces return silently WRONG flux (P3 edge DOFs collapse onto one coordinate key)	underworldcode/underworld3#459	None	lmoresi	None	None	15 days, 18:52:43	None
TransverseIsotropicFlowModel: consistent (Newton) tangent inconsistent with the residual when anisotropy is active	underworldcode/underworld3#457	None	lmoresi	None	None	5 days, 22:46:27	None
plasticity-solvers skill teaches the retired yield-homotopy doctrine — rewrite around Picard entry + grid sequencing, do not restore the API	underworldcode/underworld3#454	None	lmoresi	None	None	16 days, 0:02:41	None
Spiegelman notch benchmark example builds a 3600 x 900 km domain instead of 120 x 30 km	underworldcode/underworld3#451	None	lmoresi	None	None	6:41:08	None
3D nested P1 MG prolongation has O(1) wrong entries (nested_prolongation_from_dms), invisible to its own test	underworldcode/underworld3#449	None	lmoresi	None	None	None	None
Self-assigning a constitutive Parameter (read then write back) recurses to stack death	underworldcode/underworld3#447	None	lmoresi	None	None	20:17:04	None
Rotated-BC analytic-normal guard false-positive when a second mesh exists at reaction read-out (multi-mesh unwrap identity)	underworldcode/underworld3#445	None	lmoresi	None	None	17 days, 13:15:45	None
interpolation_matrix(nnn=1, order=1) silently returns a nearest-neighbour operator where the value path raises	underworldcode/underworld3#443	None	lmoresi	None	None	16:55:55	None
Swarm proxy MeshVariable does not inherit the swarm variable's units	underworldcode/underworld3#439	None	lmoresi	None	None	18:58:18	None
Free surface with nonlinear / anisotropic rheology: strong material-boundary constraint is linear-only (penalty fallback leaks)	underworldcode/underworld3#438	None	lmoresi	None	None	1 day, 20:18:00	None
uw.function.evaluate returns wrong values for P1 fields at points exactly on cell edges (3D)	underworldcode/underworld3#432	None	lmoresi	None	None	17 days, 21:22:35	None
CBF sigma_nn recovery on deformed/faceted boundaries: ~2.4% amplitude deficit (chord-vs-arc boundary mass suspected)	underworldcode/underworld3#431	None	lmoresi	None	None	17 days, 21:07:35	None
custom_mg.rbf_prolongation: no conditioning path on an indefinite saddle solve, and its only test asserts convergence rather than accuracy	underworldcode/underworld3#429	None	lmoresi	None	None	None	None
Dead parameters and dead code in the RBF interpolation path (and a test silently discarding its nnn)	underworldcode/underworld3#428	None	lmoresi	None	None	1 day, 0:50:14	None
rbf_interpolator_local: inverse-distance weights use SQUARED distances, so the documented p semantics are wrong (effective exponent is 2p)	underworldcode/underworld3#427	None	lmoresi	None	None	1 day, 0:50:27	None
Swarm proxy refresh is broken whenever reference quantities are set (dimensional coords into a non-dimensional kd-tree)	underworldcode/underworld3#426	None	lmoresi	None	None	5:24:16	None
Use the nested hierarchy for MG transfers on adapt children (topological prolongation)	underworldcode/underworld3#425	None	lmoresi	None	None	None	None
3D: shape relaxation can break the custom-P FMG build (zero-column transfer) — silent GAMG fallback	underworldcode/underworld3#424	None	lmoresi	None	None	18:04:48	None
Old-frame SL reach-back amplifies exponentially on per-step-moving meshes (free-surface T blow-up; affects movers/adapt identically)	underworldcode/underworld3#423	None	lmoresi	None	None	None	None
3D shape relaxation improves quality but not accuracy — does an anisotropic metric recover the 2D gain?	underworldcode/underworld3#422	None	lmoresi	None	None	None	None
FreeSurface: prescribed surface datum loses ~7% net flux in parallel (surface-array <-> field round trip)	underworldcode/underworld3#421	None	lmoresi	None	None	1 day, 5:37:18	None
Monthly issue metrics report	#765	julesghub	julesghub	None	None	None	None
MMPDE mover silently does nothing on graded meshes (partition-dependent area floor)	underworldcode/underworld3#419	None	lmoresi	None	None	1 day, 18:10:05	None
Repeated rotated free-slip Stokes solves rebuild solver state and grow RSS until OOM	underworldcode/underworld3#417	None	gthyagi	19 days, 1:44:51	None	19 days, 1:44:52	None
sympy.Max/Min(UWexpression, plain number) crashes at construction: AttributeError '_prec'	underworldcode/underworld3#415	None	lmoresi	None	None	4 days, 2:49:19	None
Curved-boundary P2 VERTEX flux/traction values converge only slowly — document and steer consumers to midpoint/fitted quantities	underworldcode/underworld3#414	None	lmoresi	None	None	4 days, 2:55:31	None
boundary_flux: 2D P1 traces crash with a bare KeyError in the lumped line-mass assembly	underworldcode/underworld3#413	None	lmoresi	None	None	4 days, 2:55:25	None
compute_volume_residual_fields / boundary sibling still strip Dirichlet values (the #407 fix was applied to one of three duplicated variants)	underworldcode/underworld3#411	None	lmoresi	None	None	4 days, 4:18:52	None
Time-dependent Dirichlet BCs are broken in solve(): essential values inserted at PETSC_MIN_REAL, mesh.t kernels see -1.8e308	underworldcode/underworld3#410	None	lmoresi	None	None	None	None
boundary_flux 3D assembly gathers the full global boundary onto every rank (memory scaling)	underworldcode/underworld3#408	None	lmoresi	None	None	None	None
CBF boundary_flux: _assemble_volume_reaction is wrong on inhomogeneous Dirichlet boundaries (2D and 3D)	underworldcode/underworld3#407	None	lmoresi	None	None	2:50:52	None
Empty-rank support, layer 2: evaluate/points_in_domain, radii/centroid reductions, gather_data NaN-stripping	underworldcode/underworld3#405	None	lmoresi	None	None	21 days, 1:30:57	None
Finish rotated free-slip prescribed-normal datum: wire FreeSurface consistent solve, pyx API, parallel, nonlinear	underworldcode/underworld3#403	None	lmoresi	None	None	5 days, 17:16:16	None
FreeSurface: composition transport is level-set-only; can't drive temperature convection without private access	underworldcode/underworld3#402	None	lmoresi	None	None	None	None
_tensor_stats crashes for genuine (d,d) tensor variables: flat component index used on the structured array axis	underworldcode/underworld3#400	None	lmoresi	None	None	20:44:46	None
Mesh construction crashes on empty ranks: navigation kd-tree build passes a 1-D empty array (StructuredQuadBox(elementRes=(2,2)) at np4)	underworldcode/underworld3#399	None	lmoresi	None	None	21:04:53	None
mesh.write() crashes for a mesh loaded directly from a .msh file (CoordinateSystemType is None)	underworldcode/underworld3#397	None	lmoresi	None	None	5:56:56	None
Point-location fallback ladder: NaN sentinel + RBF rung for deformed quad/hex meshes	underworldcode/underworld3#392	None	lmoresi	None	None	4:19:37	None
test_1052 VEP stability tests fail under PETSc 3.25 (variable-dt pure-VE blow-up), pass in level_1 gate	underworldcode/underworld3#390	None	lmoresi	None	None	16:46:21	None
3D NVB refinement count diverges across PETSc patch versions from an identical base mesh (5198 vs 4816)	underworldcode/underworld3#387	None	lmoresi	None	None	22 days, 18:06:54	None
swarm.points physical-coordinate scaling mislabels units (meter magnitudes labelled with mesh.units)	underworldcode/underworld3#386	None	lmoresi	None	None	1 day, 23:48:23	None
Rank-asymmetric temporary variable names in _vector_stats/_tensor_stats (temp_mag{id(self)})	underworldcode/underworld3#384	None	lmoresi	None	None	1 day, 8:13:56	None
Callback-array parallel safety: remaining exposures after #376 (swarm.points callback, delayed-callback replay, central guard)	underworldcode/underworld3#379	None	lmoresi	None	None	7:16:00	None
Canonical PETSc-sync callback fires on fancy-indexed array copies — serial warning, parallel hang/crash	underworldcode/underworld3#376	None	lmoresi	None	None	1 day, 2:17:40	None
np4: test_parallel_custom_fmg_stokes_constrained rel-L2 0.00562 vs 0.005 tolerance (np2 passes)	underworldcode/underworld3#370	None	lmoresi	None	None	8 days, 0:12:35	None
SNES_Scalar default u_Field is created with num_components=mesh.dim (scalar should be 1?)	underworldcode/underworld3#367	None	lmoresi	None	None	8 days, 0:43:05	None
Land bugfix/custom-mg-parallel (stranded session WIP): custom-MG parallel support, 52 commits pushed, no PR	underworldcode/underworld3#365	None	lmoresi	None	None	1 day, 4:26:45	None
Moving mesh (mesh.deform / free surface / r-adapt) crashes at np>1: _build_kd_tree_index nav_coords[points - pStart] out of bounds	underworldcode/underworld3#360	None	lmoresi	None	None	7 days, 13:16:57	None
fix(container): Command-Line Container build fails — PETSc 3.21/3.22 API mismatch	underworldcode/underworld3#355	None	jcgraciosa	15 days, 1:29:09	None	15 days, 1:29:10	None
smooth_mesh_interior(strategy=...) raises TypeError with spring/MA/OT movers (unconditional resolution_ratio injection)	underworldcode/underworld3#353	None	lmoresi	None	None	9 days, 9:15:22	None
_spd_sanitise: all-NaN eigenvalues on a rank propagate NaN instead of the SPD fallback (mmpde live path)	underworldcode/underworld3#352	None	lmoresi	None	None	8 days, 12:04:07	None
mesh_metric_mismatch: rank-local A_target/A_mean sums make the returned δ moments partition-dependent	underworldcode/underworld3#351	None	lmoresi	None	None	16 days, 19:10:04	None
rotated_bc opt-in LU path: pressure-datum pin is partition-dependent at np>1	underworldcode/underworld3#348	None	lmoresi	None	None	None	None
Latent MPI deadlock: spring smoother returns early on rank-local n_free==0 before collectives	underworldcode/underworld3#346	None	lmoresi	None	None	9 days, 11:57:45	None
ptest_004_nodal_swarm_advection fails: DuDt._nswarm_psi is None (stale script after ddt refactors)	underworldcode/underworld3#340	None	lmoresi	None	None	16 days, 11:40:47	None
add_rotated_freeslip_bc(0.0, boundary) raises NotImplementedError: float-zero conds rejected by structural sympy comparison	underworldcode/underworld3#336	None	lmoresi	None	None	16 days, 9:01:07	None
SwarmVariable.read_timestep: reconsider rank-0-routed read vs keep-local (restore-strategy unification)	underworldcode/underworld3#333	None	lmoresi	None	None	None	None
test_0765_internal_boundary_integral_mpi calls raw Mesh._deform_mesh() — rejected by the coordinate-mutation guard (fails np2/np4 on development)	underworldcode/underworld3#331	None	lmoresi	None	None	17 days, 8:34:07	None
Swarm.save: non-zero ranks return while rank 0 still appends metadata — immediate reopen hits HDF5 file locking (BlockingIOError)	underworldcode/underworld3#330	None	lmoresi	None	None	17 days, 14:21:18	None
uw.non_dimensionalise(pint.Quantity) crashes: invalid dimensionality= kwarg in units.py protocol 5	underworldcode/underworld3#328	None	lmoresi	None	None	17 days, 12:39:20	None
Internal-facet normal orientation is rank-dependent at partition seams (vector surface integrals wrong at np>1)	underworldcode/underworld3#327	None	lmoresi	4 days, 0:26:46	None	17 days, 12:51:52	None
add_particles_with_global_coordinates duplicates particles at np>1 (each rank adds the full array)	underworldcode/underworld3#324	None	lmoresi	None	None	17 days, 8:42:48	None
Compare free-slip methods on Kramer annulus and spherical benchmarks	underworldcode/underworld3#320	lmoresi	gthyagi	None	None	None	None
boundary_flux + rotated_bc: same empty-IS latent segfault as #291 in 5 more places	underworldcode/underworld3#319	None	lmoresi	None	None	17 days, 13:25:31	None
Level-1 fast tests: memprobe failures appear order-dependent	underworldcode/underworld3#316	None	gthyagi	19 days, 1:20:38	None	19 days, 1:20:39	None
petsc_interpolate: the DMLocatePoints call count is rank-local (cache key + unreduced location capability) — hangs at np>=4	underworldcode/underworld3#314	None	lmoresi	None	None	40 days, 19:19:32	None
./uw build should verify numpy ↔ petsc4py ↔ Cython-extension ABI consistency (and rebuild on mismatch)	underworldcode/underworld3#308	None	lmoresi	None	None	None	None
custom_mg prolongation builders should use the coarse DMPlex + native point location, not scipy Delaunay over the DOF cloud	underworldcode/underworld3#307	None	lmoresi	None	None	None	None
Validate custom hierarchical-FMG / SBR suite under numpy 2 (needs custom petsc4py 3.25 rebuilt vs numpy 2)	underworldcode/underworld3#303	None	lmoresi	None	None	1:35:42	None
JIT: a manifested constants[] UWexpression can be baked into the C source (not live-rampable)	underworldcode/underworld3#302	None	lmoresi	None	None	21 days, 13:59:00	None
Snapshot restore: split geometry vs topology mesh version (deform should not invalidate)	underworldcode/underworld3#296	None	lmoresi	None	None	None	None

This report was generated with the Issue Metrics Action
Search query used to find these items: repo:underworldcode/underworld2 repo:underworldcode/underworld3 is:issue created:2026-07-01..2026-07-31 -reason:"not planned"