Upgrade instructions

From #7517 (Define BBH directory structure):

BBH simulations now follow a directory structure defined by eccentricity-control:

Ecc0/
  ID/
  Lev1/
    0000_Inspiral/
    ...
    0013_Ringdown/

From #7550 (Make step choosers work on split variables):

In CCE the ErrorControl(SwshVars) and ErrorControl(CoordVars) step choosers have been merged into a plain ErrorControl step chooser that acts on all the variables. It is no longer possible to specify separate tolerances for the two sets of variables.

From #7539 (Upgrade container to Ubuntu 26.04, raise compiler requirements):

Now required: GCC 11+, Clang 17+, CMake 3.22+, Python 3.10+.

From #7555 (Cce: give the initial data its own Du(Dr(J)) interpolator):

In input files that use CauchySecondOrder, now specify

CauchySecondOrder:
  # ... other options
  # The worldtube Du(Dr(J)) that the second-order match uses is built with
  # this interpolator rather than with `H5Interpolator` below: the initial
  # data wants a low order here (2 to 4), while the evolution wants a high
  # one for the values it interpolates every step.
  DuDrJInterpolator:
    BarycentricRationalSpanInterpolator:
      MinOrder: 2
      MaxOrder: 2

From #7482 (Generalize amr::Limits policy to specify resolution bounds independently for different topologies):

Within the input file options for

Amr: Policies: Limits:

replace the option

    NumGridPoints: Auto

with the options

    NumPolynomialModes: Auto
    FourierM: Auto
    SphericalHarmonicL: Auto

If you specified bounds for NumGridPoints, use those bounds for NumPolynomialModes decreasing each bound by 1

From #7569 (Cce: Cauchy matching fixed point solver for J2):

In CauchySecondOrder input blocks, rename AngularCoordTolerance → J0Tolerance, MaxIterations → J0MaxIterations, and MaxAngularSolveError → MaxCauchyJ0.
Remove RequireConvergence and MaxScriSecondDerivative.
Add J2Tolerance (suggested 1e-14) and J2MaxIterations (suggested 10).

Merged pull-requests (76)

CLI & Python bindings (1):

Update PlotPowerMonitors for spherical harmonics to work with SW (#7554)

General changes (68):

Define BBH directory structure (#7517)
Move spherical harmonic power monitors helper functions to header (#7527)
Generalize Ccz4WrappedGr to handle solutions with negative lapse (#7536)
Try out clangd-tidy (#7537)
Set locale variables for file tests (#7516)
Fix Tabulated3D minimum enthalpy (#7511)
Add infra for computing time derivatives of boundary evolved fields (#7524)
HalfFourier Partial Derivatives (#7529)
Remove unnamed namespaces from headers (#7542)
Add frame parameter to sw_vars_list (#7523)
Fix handling git worktrees (#7540)
Add FilledSphere filtering to ScalarWave system (#7510)
Unset LC_ALL in file tests (#7545)
Add DirichletAnalytic BC to the LDG system SecondOrderScalarWave (#7541)
Add boundary variables initialization action (#7546)
Make step choosers work on split variables (#7550)
Add spherical harmonic power monitors to ScalarWave (#7528)
Add self start unit tests for boundary evolution fields (#7535)
Upgrade container to Ubuntu 26.04, raise compiler requirements (#7539)
Add dense_output_uses_fsal() and improve non-FSAL RK time steppers (#7562)
Simplify some expressions in Averager (#7563)
Update subcell check for context with non-hypercube bases (#7548)
Add outer radius and radial distribution options for CBCO inner and outer spheres (#7551)
Fix excessive resource use for Test_NeighborsOfChild (#7556)
Cce: give the initial data its own Du(Dr(J)) interpolator (#7555)
Add boundary evolved variables to SecondOrderScalarWave (#7553)
Correct the nonlinear shear coefficient in raw scri Psi0 (#7560)
Correct inverse-shear normalization in the CCE boundary-H transform (#7559)
Add HalfS1 topology (#7547)
Generalize amr::Limits policy to specify resolution bounds independently for different topologies (#7482)
Add the cylindrical domain as an option to the BBH pipeline (#7483)
Allow reading temperature from initial data (#7568)
Allow using boundary evolved fields in boundary conditions (#7549)
Eccentricity control: remove dependence on SpEC (#7526)
Add subcell-weighted element distribution (#7552)
Add dense output unit test for boundary evolved variables (#7570)
Fix docs of Random and ByBlock step choosers (#7573)
Allow boundary variables in NonconservativeSystem and SetVariables (#7571)
Cce: Cauchy matching fixed point solver for J2 (#7569)
Add DirichletCharacteristics boundary condition to SecondOrderScalarWave (#7572)
Rename container /work to /sxscollaboration (#7581)
Container HPC slurm support (#7585)
Fix PPAO spacetime ghost zone size and unlock alpha_7/alpha_9 (#7578)
Add 10th-order FD stencil to PartialDerivatives (#7582)
Add HalfFourier filtering (#7575)
Point CI yamls to /sxscollaboration instead of /work (#7587)
Break circular include in Tensor.hpp (#7574)
Allow cartoon domain creators to not use BC (#7590)
Cce fixed point potential solve (#7583)
Add WithNoise initial data wrapper (#7404)
Disable clangd-tidy unused-includes check (#7598)
Avoid unused cores that could be used (#7592)
Update UniformCylindricalSide map for BNS configurations (#7400)
Fix some AMR issues with new topologies (#7593)
Interpolate to elements in a defined order (#7599)
Fix protocols failing to actually check things (#7603)
Fix MortarNextTemporalId when the control system limits the step size (#7597)
Add Cartoon + Half Fourier domain (#7576)
Fix dropped Sphere target points on element boundaries (#7594)
Observe norm options (#7606)
Fix Hypercube filtering through nonowning Variables (#7602)
Clarify upgrade instructions description (#7612)
Replace TimeSteppingPolicy with LtsMode (#7614)
Discard data sooner for RK non-FSAL time steppers (#7608)
Silence some clang-tidy warnings (#7607)
Fix FixedHashMap error message (#7604)
Read subsets of volume data tensor components (#7580)
Add ModalSpacetimeInterpolator (#7584)

Bugfixes (5):

Make domain test helper reorient coords like OrientationMapHelpers (#7525)
Elide control system inactive map FoT check for nonmonotonic timesteppers (#7579)
Fix FoT readiness deadlock in LimitTimeStep (#7589)
Fix nondeterminism in AH finds (#7567)
Fix volume-data dependencies for common horizon finding (#7605)

Continuous integration & deployment (2):

Update auto-fetched dependencies, test on CI, upgrade macOS runner on CI (#6915)
Fix compiling auto-fetched dependencies with PIC (#6958)

Contributors (13): @nilsvu, @michaeldmurphy1, @hen-w, @kidder, @wthrowe, @EmilyWang0130, @macedo22, @gda98re, @GitHimanshuc, @ncorsobh, @nilsdeppe, @nikwit, @agourakis82