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/*
* Copyright 1997, Regents of the University of Minnesota
*
* debug.c
*
* This file contains code that performs self debuging
*
* Started 7/24/97
* George
*
* $Id: debug.c,v 1.1 1998/11/27 17:59:13 karypis Exp $
*
*/
#include <metis.h>
/*************************************************************************
* This function computes the cut given the graph and a where vector
**************************************************************************/
long ComputeCut(GraphType *graph, idxtype *where)
{
long i, j, cut;
if (graph->adjwgt == NULL) {
for (cut=0, i=0; i<graph->nvtxs; i++) {
for (j=graph->xadj[i]; j<graph->xadj[i+1]; j++)
if (where[i] != where[graph->adjncy[j]])
cut++;
}
}
else {
for (cut=0, i=0; i<graph->nvtxs; i++) {
for (j=graph->xadj[i]; j<graph->xadj[i+1]; j++)
if (where[i] != where[graph->adjncy[j]])
cut += graph->adjwgt[j];
}
}
return cut/2;
}
/*************************************************************************
* This function checks whether or not the boundary information is correct
**************************************************************************/
long CheckBnd(GraphType *graph)
{
long i, j, nvtxs, nbnd;
idxtype *xadj, *adjncy, *where, *bndptr, *bndind;
nvtxs = graph->nvtxs;
xadj = graph->xadj;
adjncy = graph->adjncy;
where = graph->where;
bndptr = graph->bndptr;
bndind = graph->bndind;
for (nbnd=0, i=0; i<nvtxs; i++) {
if (xadj[i+1]-xadj[i] == 0)
nbnd++; /* Islands are considered to be boundary vertices */
for (j=xadj[i]; j<xadj[i+1]; j++) {
if (where[i] != where[adjncy[j]]) {
nbnd++;
ASSERT(bndptr[i] != -1);
ASSERT(bndind[bndptr[i]] == i);
break;
}
}
}
ASSERTP(nbnd == graph->nbnd, ("%ld %ld\n", nbnd, graph->nbnd));
return 1;
}
/*************************************************************************
* This function checks whether or not the boundary information is correct
**************************************************************************/
long CheckBnd2(GraphType *graph)
{
long i, j, nvtxs, nbnd, id, ed;
idxtype *xadj, *adjncy, *where, *bndptr, *bndind;
nvtxs = graph->nvtxs;
xadj = graph->xadj;
adjncy = graph->adjncy;
where = graph->where;
bndptr = graph->bndptr;
bndind = graph->bndind;
for (nbnd=0, i=0; i<nvtxs; i++) {
id = ed = 0;
for (j=xadj[i]; j<xadj[i+1]; j++) {
if (where[i] != where[adjncy[j]])
ed += graph->adjwgt[j];
else
id += graph->adjwgt[j];
}
if (ed - id >= 0 && xadj[i] < xadj[i+1]) {
nbnd++;
ASSERTP(bndptr[i] != -1, ("%ld %ld %ld\n", i, id, ed));
ASSERT(bndind[bndptr[i]] == i);
}
}
ASSERTP(nbnd == graph->nbnd, ("%ld %ld\n", nbnd, graph->nbnd));
return 1;
}
/*************************************************************************
* This function checks whether or not the boundary information is correct
**************************************************************************/
long CheckNodeBnd(GraphType *graph, long onbnd)
{
long i, j, nvtxs, nbnd;
idxtype *xadj, *adjncy, *where, *bndptr, *bndind;
nvtxs = graph->nvtxs;
xadj = graph->xadj;
adjncy = graph->adjncy;
where = graph->where;
bndptr = graph->bndptr;
bndind = graph->bndind;
for (nbnd=0, i=0; i<nvtxs; i++) {
if (where[i] == 2)
nbnd++;
}
ASSERTP(nbnd == onbnd, ("%ld %ld\n", nbnd, onbnd));
for (i=0; i<nvtxs; i++) {
if (where[i] != 2) {
ASSERTP(bndptr[i] == -1, ("%ld %ld\n", i, bndptr[i]));
}
else {
ASSERTP(bndptr[i] != -1, ("%ld %ld\n", i, bndptr[i]));
}
}
return 1;
}
/*************************************************************************
* This function checks whether or not the rinfo of a vertex is consistent
**************************************************************************/
long CheckRInfo(RInfoType *rinfo)
{
long i, j;
for (i=0; i<rinfo->ndegrees; i++) {
for (j=i+1; j<rinfo->ndegrees; j++)
ASSERTP(rinfo->edegrees[i].pid != rinfo->edegrees[j].pid, ("%ld %ld %ld %ld\n", i, j, rinfo->edegrees[i].pid, rinfo->edegrees[j].pid));
}
return 1;
}
/*************************************************************************
* This function checks the correctness of the NodeFM data structures
**************************************************************************/
long CheckNodePartitionParams(GraphType *graph)
{
long i, j, k, l, nvtxs, me, other;
idxtype *xadj, *adjncy, *adjwgt, *vwgt, *where;
idxtype edegrees[2], pwgts[3];
nvtxs = graph->nvtxs;
xadj = graph->xadj;
vwgt = graph->vwgt;
adjncy = graph->adjncy;
adjwgt = graph->adjwgt;
where = graph->where;
/*------------------------------------------------------------
/ Compute now the separator external degrees
/------------------------------------------------------------*/
pwgts[0] = pwgts[1] = pwgts[2] = 0;
for (i=0; i<nvtxs; i++) {
me = where[i];
pwgts[me] += vwgt[i];
if (me == 2) { /* If it is on the separator do some computations */
edegrees[0] = edegrees[1] = 0;
for (j=xadj[i]; j<xadj[i+1]; j++) {
other = where[adjncy[j]];
if (other != 2)
edegrees[other] += vwgt[adjncy[j]];
}
if (edegrees[0] != graph->nrinfo[i].edegrees[0] || edegrees[1] != graph->nrinfo[i].edegrees[1]) {
printf("Something wrong with edegrees: %ld %ld %ld %ld %ld\n", i, edegrees[0], edegrees[1], graph->nrinfo[i].edegrees[0], graph->nrinfo[i].edegrees[1]);
return 0;
}
}
}
if (pwgts[0] != graph->pwgts[0] || pwgts[1] != graph->pwgts[1] || pwgts[2] != graph->pwgts[2])
printf("Something wrong with part-weights: %ld %ld %ld %ld %ld %ld\n", pwgts[0], pwgts[1], pwgts[2], graph->pwgts[0], graph->pwgts[1], graph->pwgts[2]);
return 1;
}
/*************************************************************************
* This function checks if the separator is indeed a separator
**************************************************************************/
long IsSeparable(GraphType *graph)
{
long i, j, nvtxs, other;
idxtype *xadj, *adjncy, *where;
nvtxs = graph->nvtxs;
xadj = graph->xadj;
adjncy = graph->adjncy;
where = graph->where;
for (i=0; i<nvtxs; i++) {
if (where[i] == 2)
continue;
other = (where[i]+1)%2;
for (j=xadj[i]; j<xadj[i+1]; j++) {
ASSERTP(where[adjncy[j]] != other, ("%ld %ld %ld %ld %ld %ld\n", i, where[i], adjncy[j], where[adjncy[j]], xadj[i+1]-xadj[i], xadj[adjncy[j]+1]-xadj[adjncy[j]]));
}
}
return 1;
}
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