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/* Copyright 2004,2007 ENSEIRB, INRIA & CNRS
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** This file is part of the Scotch software package for static mapping,
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** graph partitioning and sparse matrix ordering.
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** This software is governed by the CeCILL-C license under French law
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** and abiding by the rules of distribution of free software. You can
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** use, modify and/or redistribute the software under the terms of the
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** CeCILL-C license as circulated by CEA, CNRS and INRIA at the following
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** URL: "http://www.cecill.info".
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** As a counterpart to the access to the source code and rights to copy,
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** modify and redistribute granted by the license, users are provided
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** only with a limited warranty and the software's author, the holder of
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** the economic rights, and the successive licensors have only limited
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** In this respect, the user's attention is drawn to the risks associated
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** with loading, using, modifying and/or developing or reproducing the
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** software by the user in light of its specific status of free software,
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** that may mean that it is complicated to manipulate, and that also
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** therefore means that it is reserved for developers and experienced
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** professionals having in-depth computer knowledge. Users are therefore
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** encouraged to load and test the software's suitability as regards
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** their requirements in conditions enabling the security of their
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** systems and/or data to be ensured and, more generally, to use and
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** operate it in the same conditions as regards security.
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** The fact that you are presently reading this means that you have had
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** knowledge of the CeCILL-C license and that you accept its terms.
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/************************************************************/
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/** NAME : vmesh_separate_fm.h **/
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/** AUTHOR : Francois PELLEGRINI **/
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/** FUNCTION : These lines are the data declarations **/
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/** for the improved Fiduccia-Mattheyses **/
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/** mesh element separation routine. **/
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/** DATES : # Version 4.0 : from : 26 feb 2003 **/
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/** to 06 may 2004 **/
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/************************************************************/
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/*+ Gain table subbits. +*/
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#define VMESHSEPAFMGAINBITS 4
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/*+ Prime number for hashing vertex numbers. +*/
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#define VMESHSEPAFMHASHPRIME 11 /*+ Prime number for hashing +*/
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/*+ Gain table vertex status. +*/
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#define VMESHSEPAFMSTATEFREE ((GainLink *) 0) /*+ Element is free or separator-chained +*/
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#define VMESHSEPAFMSTATEUSED ((GainLink *) 1) /*+ Element already swapped +*/
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#define VMESHSEPAFMSTATELINK ((GainLink *) 2) /*+ Currently in gain table if higher +*/
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** The type and structure definitions.
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/*+ This structure holds the method parameters. +*/
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typedef struct VmeshSeparateFmParam_ {
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INT movenbr; /*+ Maximum number of uneffective moves that can be done +*/
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INT passnbr; /*+ Number of passes to be performed (-1 : infinite) +*/
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double deltrat; /*+ Maximum weight imbalance ratio +*/
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} VmeshSeparateFmParam;
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/*+ The hash element structure. The goal
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of both hash arrays is to record partition
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data that supercedes the one contained in
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the calling Vmesh structure, until the newly
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computed partition is written back to the
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typedef struct VmeshSeparateFmElement_ {
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GainLink gainlink; /*+ Gain link if moved to other part; FIRST +*/
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Gnum velmnum; /*+ Number of vertex in hash table +*/
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int vertpart; /*+ Vertex part +*/
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Gnum ncmpcut2; /*+ Number of neighbor nodes in separator +*/
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Gnum ncmpgain2; /*+ Separator gain if moved to given part +*/
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Gnum ncmpgaindlt; /*+ Node load imbalance if element swapped +*/
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Gnum mswpnum; /*+ Number of move sweep when data recorded +*/
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} VmeshSeparateFmElement;
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/*+ The hash node structure. +*/
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typedef struct VmeshSeparateFmNode_ {
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Gnum vnodnum; /*+ Number of vertex in hash table +*/
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Gnum vnloval; /*+ Vertex load +*/
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int vertpart; /*+ Vertex part +*/
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Gnum ecmpsize0; /*+ Number of element neighbors in part 0 +*/
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Gnum mswpnum; /*+ Number of move sweep when data recorded +*/
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} VmeshSeparateFmNode;
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/*+ The move recording structure. +*/
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typedef struct VmeshSeparateFmSave_ {
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Gnum hertnum; /*+ Hash index of vertex, (helmnum) or (-1 - hnodnum) +*/
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union { /*+ Stored data to recover +*/
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struct { /*+ Recovery data for element +*/
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int vertpart; /*+ Vertex part +*/
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Gnum ncmpcut2; /*+ Number of neighbor nodes in separator +*/
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Gnum ncmpgain2; /*+ Separator gain if moved to given part +*/
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Gnum ncmpgaindlt; /*+ Node load imbalance if element swapped +*/
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struct { /*+ Recovery data for node +*/
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int vertpart; /*+ Vertex part +*/
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Gnum ecmpsize0; /*+ Number of element neighbors in part 0 +*/
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} VmeshSeparateFmSave;
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** The function prototypes.
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#ifndef VMESH_SEPARATE_FM
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int vmeshSeparateFm (Vmesh * restrict const, const VmeshSeparateFmParam * restrict const);
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static VmeshSeparateFmElement * vmeshSeparateFmTablGet (GainTabl * const, const Gnum, const Gnum);
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static int vmeshSeparateFmResize (GainTabl * restrict const, VmeshSeparateFmElement * restrict * const, VmeshSeparateFmNode * restrict * const, VmeshSeparateFmSave * restrict * const, const Gnum, VmeshSeparateFmElement **, VmeshSeparateFmElement **, const Gnum);
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#ifdef SCOTCH_DEBUG_VMESH3
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static int vmeshSeparateFmCheck (const Vmesh * const, const VmeshSeparateFmElement * restrict, const VmeshSeparateFmNode * restrict, const Gnum, const Gnum, const Gnum);
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#endif /* SCOTCH_DEBUG_VMESH3 */
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src/libscotch/vmesh_separate_fm.h
