stage_target.hpp File Reference

#include <cstddef>
#include <limits>
#include <optional>
#include <stdexcept>
#include <type_traits>
#include <utility>
#include <vector>
#include "peclet/core/common/types.hpp"
#include "peclet/core/decomp/block_decomposer.hpp"

Go to the source code of this file.

Classes
struct	peclet::core::decomp::StageTarget< Dim >
	Where a level goes: the result of chooseStageTarget / repartitionTarget. More...
struct	peclet::core::decomp::SiblingMergeChoice< Dim >
	A sibling merge the search chose: the tree depth it truncates at, the merged decomposition, and its maps (agglomerated(depth, &groupOf, &ownerOf)). More...

Namespaces
namespace	peclet
namespace	peclet::core
namespace	peclet::core::decomp

Enumerations
enum class	peclet::core::decomp::StageKind { peclet::core::decomp::InPlace , peclet::core::decomp::SiblingMerge , peclet::core::decomp::Repartition , peclet::core::decomp::Replicated }
	How a multigrid level moves when it can no longer coarsen in place (see chooseStageTarget and the file comment for the movement each kind implies). More...

Functions
template<int Dim>
Index	peclet::core::decomp::minBlockExtent (const BlockDecomposer< Dim > &d)
	Smallest block extent over every block and axis — replicated, like the decomposition.
template<int Dim>
Index	peclet::core::decomp::largestBlockCells (const BlockDecomposer< Dim > &d)
	Cell count of the largest block — replicated, like the decomposition.
template<int Dim, class Liftable >
std::optional< SiblingMergeChoice< Dim > >	peclet::core::decomp::shallowestLiftableMerge (const BlockDecomposer< Dim > &cur, Liftable &&liftable, int minExtent)
	The sibling-merge SEARCH on its own, with no trigger: the shallowest merge — fewest merges, i.e.
template<int Dim, class Liftable >
std::optional< StageTarget< Dim > >	peclet::core::decomp::repartitionTarget (const BlockDecomposer< Dim > &cur, const std::type_identity_t< IVec< Dim > > &levelGrid, Liftable &&liftable, int minExtent, Index maxBlockCells)
	The Repartition candidate (design §11.2): a fresh proportional, unweighted, unaligned ORB of the level grid on the first np_L parent ranks, or std::nullopt when none lifts.
template<int Dim, class Liftable >
StageTarget< Dim >	peclet::core::decomp::chooseStageTarget (const BlockDecomposer< Dim > &cur, const std::type_identity_t< IVec< Dim > > &levelGrid, Liftable &&liftable, int minExtent, Index maxBlockCells=0)
	Choose the stage target of a level whose current decomposition is cur over the level grid levelGrid (which must equal cur.globalSize()).