/[escript]/trunk/finley/src/Mesh_resolveNodeIds.c
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Annotation of /trunk/finley/src/Mesh_resolveNodeIds.c

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Revision 1811 - (hide annotations)
Thu Sep 25 23:11:13 2008 UTC (11 years, 4 months ago) by ksteube
File MIME type: text/plain
File size: 5329 byte(s)
Copyright updated in all files

1 jgs 150
2 ksteube 1312 /*******************************************************
3 ksteube 1811 *
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 ksteube 1312
14 ksteube 1811
15 jgs 82 /**************************************************************/
16    
17     /* Finley: Mesh */
18    
19 ksteube 1312 /* at input the element nodes refers to the numbering defined the global Id assigned to the nodes in the */
20     /* NodeFile. It is also not ensured that all nodes refered by an element is actually available */
21     /* on the process. At the output, a local node labeling is used and all nodes are available */
22     /* In particular the numbering of the element nodes is between 0 and in->NodeFile->numNodes */
23     /* The function does not create a distribution of the degrees of freedom. */
24 jgs 82
25     /**************************************************************/
26    
27     #include "Mesh.h"
28 jgs 123 #include "Util.h"
29 jgs 82
30     /**************************************************************/
31    
32     void Finley_Mesh_resolveNodeIds(Finley_Mesh* in) {
33 ksteube 1312
34     index_t min_id, max_id, min_id2, max_id2, global_min_id, global_max_id,
35     *globalToNewLocalNodeLabels=NULL, *newLocalToGlobalNodeLabels=NULL;
36     dim_t len, n, newNumNodes, numDim;
37 jgs 82 Finley_NodeFile *newNodeFile=NULL;
38 ksteube 1312 #ifdef PASO_MPI
39     index_t id_range[2], global_id_range[2];
40     #endif
41 jgs 82 numDim=Finley_Mesh_getDim(in);
42 ksteube 1312 /* find the minimum and maximum id used by elements: */
43 jgs 123 min_id=INDEX_T_MAX;
44     max_id=-INDEX_T_MAX;
45 jgs 82 Finley_ElementFile_setNodeRange(&min_id2,&max_id2,in->Elements);
46     max_id=MAX(max_id,max_id2);
47     min_id=MIN(min_id,min_id2);
48     Finley_ElementFile_setNodeRange(&min_id2,&max_id2,in->FaceElements);
49     max_id=MAX(max_id,max_id2);
50     min_id=MIN(min_id,min_id2);
51     Finley_ElementFile_setNodeRange(&min_id2,&max_id2,in->ContactElements);
52     max_id=MAX(max_id,max_id2);
53     min_id=MIN(min_id,min_id2);
54     Finley_ElementFile_setNodeRange(&min_id2,&max_id2,in->Points);
55     max_id=MAX(max_id,max_id2);
56     min_id=MIN(min_id,min_id2);
57 ksteube 1312 #ifdef PASO_MPI
58     id_range[0]=-min_id;
59     id_range[1]=max_id;
60     MPI_Allreduce( id_range, global_id_range, 2, MPI_INT, MPI_MAX, in->MPIInfo->comm );
61     global_min_id=-global_id_range[0];
62     global_max_id=global_id_range[1];
63     #else
64     global_min_id=min_id;
65     global_max_id=max_id;
66     #endif
67 jgs 82 #ifdef Finley_TRACE
68 ksteube 1312 printf("Node id range used by elements is %d:%d\n",global_min_id,global_max_id);
69 jgs 82 #endif
70 gross 1739 if (min_id>max_id) {
71     max_id=-1;
72     min_id=0;
73     }
74 jgs 82
75 ksteube 1312 /* allocate mappings for new local node labeling to global node labeling (newLocalToGlobalNodeLabels)
76     and global node labeling to the new local node labeling (globalToNewLocalNodeLabels[i-min_id] is the
77     new local id of global node i) */
78 gross 1765 len=(max_id>min_id) ? max_id-min_id+1 : 0 ;
79 ksteube 1312 globalToNewLocalNodeLabels=TMPMEMALLOC(len,index_t); /* local mask for used nodes */
80     newLocalToGlobalNodeLabels=TMPMEMALLOC(len,index_t);
81     if (! ( (Finley_checkPtr(globalToNewLocalNodeLabels) && Finley_checkPtr(newLocalToGlobalNodeLabels) ) ) ) {
82 jgs 82
83 ksteube 1312 #pragma omp parallel
84     {
85     #pragma omp for private(n) schedule(static)
86     for (n=0;n<len;n++) newLocalToGlobalNodeLabels[n]=-1;
87     #pragma omp for private(n) schedule(static)
88     for (n=0;n<len;n++) globalToNewLocalNodeLabels[n]=-1;
89     }
90 jgs 82
91 ksteube 1312 /* mark the nodes referred by elements in globalToNewLocalNodeLabels which is currently used as a mask: */
92     Finley_Mesh_markNodes(globalToNewLocalNodeLabels,min_id,in,FALSE);
93 jgs 82
94 ksteube 1312 /* create a local labeling newLocalToGlobalNodeLabels of the local nodes by packing the mask globalToNewLocalNodeLabels*/
95 jgs 82
96 ksteube 1312 newNumNodes=Finley_Util_packMask(len,globalToNewLocalNodeLabels,newLocalToGlobalNodeLabels);
97 bcumming 730
98 ksteube 1312 /* invert the new labeling and shift the index newLocalToGlobalNodeLabels to global node ids */
99     #pragma omp parallel for private(n) schedule(static)
100     for (n=0;n<newNumNodes;n++) {
101 gross 1765 #ifdef BOUNDS_CHECK
102     if (n >= len || n < 0) { printf("BOUNDS_CHECK %s %d n=%d\n", __FILE__, __LINE__, n); exit(1); }
103     if (newLocalToGlobalNodeLabels[n] >= len || newLocalToGlobalNodeLabels[n] < 0) { printf("BOUNDS_CHECK %s %d n=%d\n", __FILE__, __LINE__, n); exit(1); }
104     #endif
105 ksteube 1312 globalToNewLocalNodeLabels[newLocalToGlobalNodeLabels[n]]=n;
106     newLocalToGlobalNodeLabels[n]+=min_id;
107     }
108     /* create a new table */
109     newNodeFile=Finley_NodeFile_alloc(numDim,in->MPIInfo);
110     if (Finley_noError()) {
111     Finley_NodeFile_allocTable(newNodeFile,newNumNodes);
112     }
113 gross 1765 if (Finley_noError()) {
114 ksteube 1312 Finley_NodeFile_gather_global(newLocalToGlobalNodeLabels,in->Nodes, newNodeFile);
115 gross 1765 }
116 ksteube 1312 if (Finley_noError()) {
117     Finley_NodeFile_free(in->Nodes);
118     in->Nodes=newNodeFile;
119     /* relable nodes of the elements: */
120     Finley_Mesh_relableElementNodes(globalToNewLocalNodeLabels,min_id,in);
121     }
122 jgs 82 }
123 ksteube 1312 TMPMEMFREE(globalToNewLocalNodeLabels);
124     TMPMEMFREE(newLocalToGlobalNodeLabels);
125     if (! Finley_noError()) {
126     Finley_NodeFile_free(newNodeFile);
127     }
128 jgs 82 }

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