/[escript]/trunk/finley/src/ElementFile_createColoring.c
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Contents of /trunk/finley/src/ElementFile_createColoring.c

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Revision 1811 - (show annotations)
Thu Sep 25 23:11:13 2008 UTC (11 years, 2 months ago) by ksteube
File MIME type: text/plain
File size: 3817 byte(s)
Copyright updated in all files

1
2 /*******************************************************
3 *
4 * Copyright (c) 2003-2008 by University of Queensland
5 * Earth Systems Science Computational Center (ESSCC)
6 * http://www.uq.edu.au/esscc
7 *
8 * Primary Business: Queensland, Australia
9 * Licensed under the Open Software License version 3.0
10 * http://www.opensource.org/licenses/osl-3.0.php
11 *
12 *******************************************************/
13
14
15 /**************************************************************/
16 /* */
17 /* Finley: ElementFile */
18 /* */
19 /* This routine tries to reduce the number of colors used to color elements in the Finley_ElementFile in */
20 /* */
21 /**************************************************************/
22
23 #include "ElementFile.h"
24 #include "Util.h"
25
26 /**************************************************************/
27
28 void Finley_ElementFile_createColoring(Finley_ElementFile* in,dim_t numNodes, index_t* degreeOfFreedom) {
29 dim_t e,i,numUncoloredElements,n,len,NN;
30 index_t *maskDOF,min_id,max_id;
31 bool_t independent;
32
33 if (in==NULL) return;
34 if (in->numElements<1) return;
35 NN=in->numNodes;
36
37 min_id=Finley_Util_getMinInt(1,numNodes,degreeOfFreedom);
38 max_id=Finley_Util_getMaxInt(1,numNodes,degreeOfFreedom);
39 len=max_id-min_id+1;
40 maskDOF=TMPMEMALLOC(len,index_t);
41 if (! Finley_checkPtr(maskDOF) ) {
42 #pragma omp parallel for private(e) schedule(static)
43 for (e=0;e<in->numElements;e++) in->Color[e]=-1;
44 numUncoloredElements=in->numElements;
45 in->minColor=0;
46 in->maxColor=in->minColor-1;
47 while (numUncoloredElements>0) {
48 /* initialize the mask marking nodes used by a color */
49 #pragma omp parallel for private(n) schedule(static)
50 for (n=0;n<len;n++) maskDOF[n]=-1;
51 numUncoloredElements=0;
52 /* OMP ?*/
53 for (e=0;e<in->numElements;e++) {
54 if (in->Color[e]<0) {
55 /* find out if element e is independend from the elements already colored: */
56 independent=TRUE;
57 for (i=0;i<NN;i++) {
58 #ifdef BOUNDS_CHECK
59 if (in->Nodes[INDEX2(i,e,NN)] < 0 || in->Nodes[INDEX2(i,e,NN)] >= numNodes) { printf("BOUNDS_CHECK %s %d i=%d e=%d NN=%d min_id=%d in->Nodes[INDEX2...]=%d\n", __FILE__, __LINE__, i, e, NN, min_id, in->Nodes[INDEX2(i,e,NN)]); exit(1); }
60 if ((degreeOfFreedom[in->Nodes[INDEX2(i,e,NN)]]-min_id) >= len || (degreeOfFreedom[in->Nodes[INDEX2(i,e,NN)]]-min_id) < 0) { printf("BOUNDS_CHECK %s %d i=%d e=%d NN=%d min_id=%d dof=%d\n", __FILE__, __LINE__, i, e, NN, min_id, degreeOfFreedom[in->Nodes[INDEX2(i,e,NN)]]-min_id); exit(1); }
61 #endif
62 if (maskDOF[degreeOfFreedom[in->Nodes[INDEX2(i,e,NN)]]-min_id]>0) {
63 independent=FALSE;
64 break;
65 }
66 }
67 /* if e is independend a new color is assigned and the nodes are marked as being used */
68 if (independent) {
69 for (i=0;i<NN;i++) maskDOF[degreeOfFreedom[in->Nodes[INDEX2(i,e,NN)]]-min_id]=1;
70 in->Color[e]=in->maxColor+1;
71 } else {
72 numUncoloredElements++;
73 }
74 }
75
76 }
77 in->maxColor++;
78 } /* end of while loop */
79 }
80 /* all done : */
81 TMPMEMFREE(maskDOF);
82 }

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