v1.0.0rc11

[1.0.0rc11] - 2026-09-17

Fixed

• The dissipation advisory warned on every run without artificial
  dissipation, whatever the mesh. On a rectilinear mesh the bare operator
  cannot hold an odd-even (sawtooth) mode, so the warning fired against the
  correct setting for both released cases. The verdict now comes from
  mesh_advisories(), which measures the mesh that the run uses and reports
  the number in every case: the released Savarino and Song meshes measure
  4.8e-15 and 2.1e-12 against a gate of 1e-8 and get a note, and a bent mesh
  without dissipation still gets the warning. A config that does not state
  its dissipation choice at all is reported by config_advisories() as
  DISS-UNDECLARED.
• The base-flow check compared the largest value in the field with 1, so
  every compressible flow with a shock or a hot wall looked mis-scaled. It
  reported density 1.39 and 1.51 and temperature 1.81 and 1.83 for the two
  released base flows, whose freestream is exactly 1. The check now looks
  for the freestream itself, the part of the field where density, velocity
  and temperature are all 1, and records the share of the field it covers
  (1.9 % and 3.7 %). A field scaled with the speed of sound has no such
  region and is still reported, now with the values of the largest uniform
  region so the actual convention is visible.
• The MUMPS ICNTL entries went into the PETSc option database at startup on
  every run. A run with no MUMPS stage left them unused and PETSc ended with
  "There are options you set that were not used". They now go in only when a
  stage can use MUMPS, and the two cuDSS example configs name the card for
  every stage instead of naming MUMPS for stages they never run.
• examples/savarino/savarino_mapwalk.py wrote the real host name into the
  machine column of every line record, which put a private host name in
  three shipped run records. It follows the package policy now: the label is
  unknown unless LINSTABPY_HOSTNAME is set.
• examples/savarino/verify_norm_convention.py ended with a traceback when
  the Zenodo base flow and modes were not in the tree, which is the state of
  a fresh clone because their licence does not allow redistribution. It
  prints the two fetch commands and stops, like run_compare_points.py.

Changed

• The test that pins the committed beta = 40 farm record checks its gains,
  which a rerun reproduces, instead of the sum of its wall times, which is a
  property of the machine on the day.

Known issues

• The STRUMPACK LU returns a wrong solve about one run in three on this
  build. Measured at the shift-invert probe of the Blasius temporal
  problem, sixteen fresh processes on byte-identical input (c9, one A6000,
  PETSc 3.24.2): eleven runs gave a relative residual of 6.3e-13 to 8.7e-12
  and five gave 1.9e-5, 2.9e-5, 3.0e-5, 6.7e-2 and 1.1e-1. Nothing in the
  input varies: the probe right-hand side is seeded and the mesh is fixed.
  The accuracy probe rejects every bad solve, which is what it exists for,
  and the eigenvalue and resolvent paths refine with FGMRES and check the
  residual afterwards, so a bad factorization cannot reach a published
  number. The cause is not established. Prefer MUMPS or cuDSS for
  production work on this build until it is.