Single source of truth for the native AMR refinement ratio. More...

#include <stdexcept>
#include <string>

Include dependency graph for refinement_ratio.hpp:

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Namespaces
namespace	pops

Functions
void	pops::require_supported_ref_ratio (int ratio)
	Validates a requested AMR refinement ratio at the hierarchy boundary.

Variables
constexpr int	pops::kAmrRefRatio = 2
	The native AMR refinement ratio between two consecutive levels.

Detailed Description

Single source of truth for the native AMR refinement ratio.

Layer: include/pops/amr. Role: the in-house (non-SAMRAI) AMR hierarchy refines and coarsens by a FIXED integer ratio between consecutive levels. That ratio is 2, and several coarse/fine paths (aux/density injection, reflux, Berger-Oliger subcycling, the condensed-Schur composite FAC) are written for ratio 2. Rather than scatter the literal 2 across those files, the ratio lives here as one named constant, and require_supported_ref_ratio rejects any other value at the hierarchy boundary. A future non-2 ratio therefore has a single entry point instead of a literal hunt: bump kAmrRefRatio, then the static_asserts guarding the ratio-2-structural kernels (e.g. the 2x2 average-down unroll in numerics/time/amr_reflux.hpp) fail loudly at exactly the sites that need generalizing.

Scope note: this is the AMR INTER-LEVEL ratio. The geometric-multigrid V-cycle coarsens its OWN domain by 2 internally; that is the linear solver's coarsening factor, a separate concern, and is deliberately NOT governed by this constant.

include/pops/amr/hierarchy/refinement_ratio.hpp File Reference¶

Namespaces

Functions

Variables

Detailed Description