SIMPLE Input Reference¶
Generated from the Fortran declarations; do not edit this page by hand.
simple.in requires &config and optionally contains &profiles.
&poincare belongs to the separate spectre_poincare.in input.
The readers are src/params.f90:read_config_namelist,
src/profiles.f90:read_profiles and app/spectre_poincare.f90:read_input.
Regenerate after configuring SIMPLE so that libneo sources are available:
make configure CONFIG=Fast
python tools/generate_input_reference.py
python tools/generate_input_reference.py --check
For a custom libneo checkout, pass --libneo-source PATH to the generator.
Type selectors, shapes and initial defaults retain their source expressions;
named constants are also resolved in JSON’s default_value and extent.
A scalar initializer for an array applies to every element. Character lengths
are shown with the type. Defaults precede runtime alias resolution and depend
on the libneo sources selected for generation. An empty documentation cell
means no adjacent declaration comment was found; see examples/simple_full.in
and DOC/config.md for additional usage, units and option interactions.
&config¶
Source: src/params.f90:240.
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Type |
Kind |
Shape |
Initial default |
Declaration documentation |
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Further configuration parameters |
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particle energy in eV; <= 0 selects 3.5 MeV/facE_al |
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Empty = unset, apply ‘wout.nc’ default at usage |
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<- spline order for R,Z,lambda over s |
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<- spline order for R,Z,lambda over theta and varphi |
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Chart for the full-orbit field+geometry: full orbit currently supports only orbit_coord = 1 (Boozer/chartmap), which shares the production GC field. |
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GPU execution is configured in the same namelist as the CPU run. Native CUDA with tuned DOPRI is the default production path. The legacy OpenACC path remains available only when selected explicitly. |
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<=AAA |
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<=AAA |
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Colliding with D-T reactor plasma. TODO: Make configurable |
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‘full’ (Coulomb operator) or ‘lorentz_nustar’ (monoenergetic pitch scattering) |
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Lorentz mode: nu* = R0*nu/(abs(iota)*v0), must be >= 0 |
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Lorentz mode: local major radius R0 in cm, must be > 0 |
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Lorentz mode: local rotational transform, must be nonzero |
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slope of Phi(s) = slope*s, added to the Boozer Hamiltonian H (normalized units) |
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DEPRECATED boolean switches (use axis_healing). Kept for back-compat and mapped to a mode with a deprecation warning; the next SIMPLE release will remove them and default axis_healing to ‘polyfit’. |
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deprecated; use s_axis_heal |
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Near-axis healing of the VMEC harmonics. Preferred selector: axis_healing = ‘legacy’ - old default: discard min(|m|,4) surfaces and extrapolate. ‘legacy_adaptive’ - old adaptive boundary from determine_nheal_for_axis. ‘powerlaw’ - rho**|m| continuation below s_axis_heal. ‘polyfit’ - rho**|m| * least-squares poly(s) below s_axis_heal. Recommended. The empty string means “unset”: deprecated logical switches below are mapped to a mode with a warning (see resolve_axis_healing_mode). |
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anchor flux for powerlaw/polyfit |
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polyfit polynomial degree in s |
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Initialize large so batch mode is not default |
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Sentinel: -1000 means user did not set it |
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SPECTRE interface treatment: only full orbit (3) is supported. |
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Full orbit near SPECTRE interfaces: entry distance in radial gyroradii and the relative tolerance of RK45 on the sharp per-volume field. 1.5 keeps the switch’s p_zeta invariant as at 3 (entry 1 breaks it) at about half the FO time (concept/spectre_loss_study/results/fo-residence). |
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Per-volume FO spline points: rho, theta, zeta per field period. |
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SPECTRE per-volume Meiss construction grid (n_r, n_th, n_phi). Each volume allocates rank-3 arrays plus batch splines of this size, so the total peak memory scales as Mvol*n_r*n_th*n_phi. spectre_ncon_phi = -1 means automatic: 32 for fields with toroidal harmonics and a minimal phi grid for axisymmetric fields (all n = 0), the dominant memory saver for tokamak cases. A positive value forces that phi count verbatim, bypassing the axisymmetric clamp. |
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Legacy progress/checkpoint interval, retained for input compatibility. Tracing performs no timed I/O; results and event totals are emitted after the OpenMP team joins. |
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Removed &config keys. They are still read so that old input files run; a value other than the historical default prints a warning. |
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&profiles¶
Source: src/profiles.f90:37.
Name |
Type |
Kind |
Shape |
Initial default |
Declaration documentation |
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&poincare¶
Source: app/spectre_poincare.f90:32.
Name |
Type |
Kind |
Shape |
Initial default |
Declaration documentation |
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