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Allocate reconstructed qflux input#148

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krystophny wants to merge 22 commits into
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fix/reconstruction-qflux-read
Open

Allocate reconstructed qflux input#148
krystophny wants to merge 22 commits into
mainfrom
fix/reconstruction-qflux-read

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Summary

  • allocate the fixed 3 by 3 qflux record before propagator input
  • add a fresh-object serialization round-trip regression
  • preserve the existing text format and field order

Closes #145. Stacked after #147 and remains unmerged with the programme stack.

The qflux normalization, moment ordering, propagator joins, reconstruction algebra, file format, memory layout, and ABI are unchanged.

Verification

Test fails on main

$ fo build && fo test propagator_io_test
propagator_io_test                         FAIL       0.00s
Summary: 0 passed, 1 failed, 0 skipped

Program received signal SIGSEGV
NEO-2-QL/propagator.f90:2334

Test passes after fix

$ fo build && fo test propagator_io_test
propagator_io_test                         PASS       0.07s
Summary: 1 passed, 0 failed, 0 skipped

$ FO_CMAKE_ARGS='-DCMAKE_Fortran_FLAGS=' fo
Static: OK (341 modules, 341 changed, 341 affected)
Build: OK
Tests: OK
Lint: OK
All stages passed (1.8s)

isw_qflux_NA=1 with in_file_pert='none' assembles an identically zero
non-axisymmetric source. That zero vector is the Arnoldi seed, so its
normalization divides by zero (0/0 -> NaN) and zhseqr then fails to
converge at every step, spinning without qflux output. Reject the
configuration in check() with a clear message instead.
Add an optional right-hand side to the non-axisymmetric solve: the
drive of a single-helicity perturbation given by a radial corrugation
field (delta B^s/B_0^phi)_mn and an electrostatic potential harmonic
Phi_mn. The vpar corrugation piece enters the A1/A2 force channels
with velocity weights a3m and x^2 (sigma-odd), the ExB piece with
weights x^-1 and a1m (sigma-even); the two new velocity moments are
computed in compute_sources. Input via new &ntv_input variables
(isw_hel_drive, m_theta_hel, hel_brad_re/im, hel_phim_re/im), default
off. Band profiles, moments and dimensional prefactors follow a
CAS-checked derivation (see issue #118).

Off by default: golden-record QL summary.h5 is reproduced to 1e-15
against a main build.
Review findings on the drive commit: fold the x^(3k-4) weight into a
single power so the x=0 quadrature node stays finite; skip the moment
quadrature on the precomputed-matrix-element path and reject
isw_hel_drive at run time when the moments are unavailable; reject the
unvalidated relativistic branch, reconstruction mode and unset species
data; deallocate asource_hel in collop_unload.
The zero-source guard added upstream rejects isw_qflux_NA=1 with
in_file_pert='none'. With the misalignment drive, that configuration is
valid: the drive supplies the non-axisymmetric source. Relax the guard
so it fires only when the drive is off or all its amplitudes are zero.
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[ql-17] Allocate serialized qflux during propagator reads

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