gtsam::MultifrontalParameters Struct Reference

Detailed Description

Parameters for gtsam::MultifrontalSolver.

These parameters are intentionally defined in a standalone header so they can be referenced from nonlinear optimizer parameter types without pulling in the full multifrontal solver headers.

Note

LM-style damping behavior is controlled by NonlinearMultifrontalSolver and its damping parameters; MultifrontalParameters only controls structure, traversal, and reporting.

Public Attributes
size_t	leafMergeDimCap = 256
	Algebraic leaf-merge dimension cap (0 disables).
size_t	leafAggregationProblemSize = 2048
	Total problem-size cap for sibling leaves processed by one task.
LeafMode	leafMode = LeafMode::Bounded
size_t	mergeDimCap = 32
	Merge threshold (0 disables).
QRMode	qrMode = QRMode::Allow
	QR mode for leaf cliques.
double	qrAspectRatio = 2.0
	Aspect ratio for QR mode=Allow.
size_t	compactCholeskySeparatorDimThreshold = 256
	Minimum separator dimension for non-star C-free Cholesky leaves.
std::ostream *	reportStream = nullptr
	Optional structure reporting.
int	eliminationParallelThreshold = 10
	Post-order task threshold.
int	solutionParallelThreshold = 4096
	Pre-order task threshold.
size_t	numThreads = 0
	Worker count (0 uses 0.75 * hw threads).

Public Types
enum class	QRMode { Off , Allow , Force }
enum class	LeafMode { Bounded , SameSeparator }

Member Data Documentation

qrMode

QRMode gtsam::MultifrontalParameters::qrMode = QRMode::Allow

QR mode for leaf cliques.

Allow defers a sole direct batch factor to the fused Cholesky path; Force still selects QR for every eligible leaf.

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The documentation for this struct was generated from the following file:

• /tmp/gtsam-4.3.0-doxygen.rsXPUS/source/gtsam/linear/MultifrontalParameters.h