parmetis.c File Reference

#include "metislib.h"

Include dependency graph for parmetis.c:

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Functions
void	FM_2WayNodeRefine1SidedP (ctrl_t *ctrl, graph_t *graph, idx_t *hmarker, real_t ubfactor, idx_t npasses)
void	FM_2WayNodeRefine2SidedP (ctrl_t *ctrl, graph_t *graph, idx_t *hmarker, real_t ubfactor, idx_t npasses)
int	METIS_ComputeVertexSeparator (idx_t *nvtxs, idx_t *xadj, idx_t *adjncy, idx_t *vwgt, idx_t *options, idx_t *r_sepsize, idx_t *part)
int	METIS_NodeNDP (idx_t nvtxs, idx_t *xadj, idx_t *adjncy, idx_t *vwgt, idx_t npes, idx_t *options, idx_t *perm, idx_t *iperm, idx_t *sizes)
int	METIS_NodeRefine (idx_t nvtxs, idx_t *xadj, idx_t *vwgt, idx_t *adjncy, idx_t *where, idx_t *hmarker, real_t ubfactor)
void	MlevelNestedDissectionP (ctrl_t *ctrl, graph_t *graph, idx_t *order, idx_t lastvtx, idx_t npes, idx_t cpos, idx_t *sizes)

Function Documentation

FM_2WayNodeRefine1SidedP()

void FM_2WayNodeRefine1SidedP	(	ctrl_t *	ctrl,
		graph_t *	graph,
		idx_t *	hmarker,
		real_t	ubfactor,
		idx_t	npasses
	)

This function performs a node-based 1-sided FM refinement that moves only nodes whose hmarker[] == -1. It is used by Parmetis.

Definition at line 237 of file parmetis.c.

FM_2WayNodeRefine2SidedP()

void FM_2WayNodeRefine2SidedP	(	ctrl_t *	ctrl,
		graph_t *	graph,
		idx_t *	hmarker,
		real_t	ubfactor,
		idx_t	npasses
	)

This function performs a node-based (two-sided) FM refinement that moves only nodes whose hmarker[] == -1. It is used by Parmetis.

Definition at line 467 of file parmetis.c.

METIS_ComputeVertexSeparator()

int METIS_ComputeVertexSeparator	(	idx_t *	nvtxs,
		idx_t *	xadj,
		idx_t *	adjncy,
		idx_t *	vwgt,
		idx_t *	options,
		idx_t *	r_sepsize,
		idx_t *	part
	)

This function bisects a graph by computing a vertex separator

Definition at line 161 of file parmetis.c.

METIS_NodeNDP()

int METIS_NodeNDP	(	idx_t	nvtxs,
		idx_t *	xadj,
		idx_t *	adjncy,
		idx_t *	vwgt,
		idx_t	npes,
		idx_t *	options,
		idx_t *	perm,
		idx_t *	iperm,
		idx_t *	sizes
	)

This function is the entry point for the node ND code for ParMETIS. The difference between this routine and the standard METIS_NodeND are the following

• It performs at least log2(npes) levels of nested dissection.
• It stores the size of the log2(npes) top-level separators in the sizes array.

Definition at line 28 of file parmetis.c.

METIS_NodeRefine()

int METIS_NodeRefine	(	idx_t	nvtxs,
		idx_t *	xadj,
		idx_t *	vwgt,
		idx_t *	adjncy,
		idx_t *	where,
		idx_t *	hmarker,
		real_t	ubfactor
	)

This function is the entry point of a node-based separator refinement of the nodes with an hmarker[] of 0.

Definition at line 199 of file parmetis.c.

MlevelNestedDissectionP()

void MlevelNestedDissectionP	(	ctrl_t *	ctrl,
		graph_t *	graph,
		idx_t *	order,
		idx_t	lastvtx,
		idx_t	npes,
		idx_t	cpos,
		idx_t *	sizes
	)

This function is similar to MlevelNestedDissection with the difference that it also records separator sizes for the top log2(npes) levels

Definition at line 105 of file parmetis.c.