/[escript]/branches/domexper/dudley/src/Mesh_resolveNodeIds.c
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trunk/esys2/finley/src/finleyC/Mesh_resolveNodeIds.c revision 102 by jgs, Wed Dec 15 07:08:39 2004 UTC trunk/finley/src/Mesh_resolveNodeIds.c revision 1739 by gross, Fri Aug 29 06:19:53 2008 UTC
# Line 1  Line 1 
 /**************************************************************/  
1    
2  /*   Finley: Mesh */  /* $Id$ */
3    
4  /*   at input the element nodes refers to the numbering defined the Id assigned to the nodes in the */  /*******************************************************
5  /*   NodeFile. At the output, the numbering of the element nodes is between 0 and numNodes */   *
6  /*   degreesOfFreedom are not neccessarily referening to a dense numbering */   *           Copyright 2003-2007 by ACceSS MNRF
7     *       Copyright 2007 by University of Queensland
8     *
9     *                http://esscc.uq.edu.au
10     *        Primary Business: Queensland, Australia
11     *  Licensed under the Open Software License version 3.0
12     *     http://www.opensource.org/licenses/osl-3.0.php
13     *
14     *******************************************************/
15    
16  /**************************************************************/  /**************************************************************/
17    
18  /*   Copyrights by ACcESS Australia 2003 */  /*   Finley: Mesh */
19  /*   Author: gross@access.edu.au */  
20  /*   Version: $Id$ */  /*   at input the element nodes refers to the numbering defined the global Id assigned to the nodes in the */
21    /*   NodeFile. It is also not ensured that all nodes refered by an element is actually available */
22    /*   on the process.  At the output, a local node labeling is used and all nodes are available */
23    /*   In particular the numbering of the element nodes is between 0 and in->NodeFile->numNodes */
24    /*   The function does not create a distribution of the degrees of freedom. */
25    
26  /**************************************************************/  /**************************************************************/
27    
 #include "Finley.h"  
28  #include "Mesh.h"  #include "Mesh.h"
29    #include "Util.h"
30    
31  /**************************************************************/  /**************************************************************/
32    
33  void  Finley_Mesh_resolveNodeIds(Finley_Mesh* in) {  void  Finley_Mesh_resolveNodeIds(Finley_Mesh* in) {
34    maybelong k,min_id,max_id,min_id2,max_id2,len,numDim,newNumNodes,n;  
35    maybelong *maskNodes=NULL,*maskElements=NULL,*index=NULL;    index_t min_id, max_id,  min_id2, max_id2, global_min_id, global_max_id,
36              *globalToNewLocalNodeLabels=NULL, *newLocalToGlobalNodeLabels=NULL;
37      dim_t len, n, newNumNodes, numDim;
38    Finley_NodeFile *newNodeFile=NULL;    Finley_NodeFile *newNodeFile=NULL;
39    Finley_ErrorCode=NO_ERROR;    #ifdef PASO_MPI
40      index_t id_range[2], global_id_range[2];
41      #endif
42    numDim=Finley_Mesh_getDim(in);    numDim=Finley_Mesh_getDim(in);
43        /*  find the minimum and maximum id used by elements: */
44    /*   find the minimum and maximum id used: */    min_id=INDEX_T_MAX;
45        max_id=-INDEX_T_MAX;
   min_id=MAYBELONG_MAX;  
   max_id=-MAYBELONG_MAX;  
   Finley_NodeFile_setIdRange(&min_id2,&max_id2,in->Nodes);  
   if (min_id2==MAYBELONG_MAX || max_id2==-MAYBELONG_MAX) {  
     Finley_ErrorCode=VALUE_ERROR;  
     sprintf(Finley_ErrorMsg,"Mesh has not been defined completely.");  
     goto clean;  
   }  
   
   max_id=MAX(max_id,max_id2);  
   min_id=MIN(min_id,min_id2);  
46    Finley_ElementFile_setNodeRange(&min_id2,&max_id2,in->Elements);    Finley_ElementFile_setNodeRange(&min_id2,&max_id2,in->Elements);
47    max_id=MAX(max_id,max_id2);    max_id=MAX(max_id,max_id2);
48    min_id=MIN(min_id,min_id2);    min_id=MIN(min_id,min_id2);
# Line 51  void  Finley_Mesh_resolveNodeIds(Finley_ Line 55  void  Finley_Mesh_resolveNodeIds(Finley_
55    Finley_ElementFile_setNodeRange(&min_id2,&max_id2,in->Points);    Finley_ElementFile_setNodeRange(&min_id2,&max_id2,in->Points);
56    max_id=MAX(max_id,max_id2);    max_id=MAX(max_id,max_id2);
57    min_id=MIN(min_id,min_id2);    min_id=MIN(min_id,min_id2);
58      #ifdef PASO_MPI
59         id_range[0]=-min_id;
60         id_range[1]=max_id;
61         MPI_Allreduce( id_range, global_id_range, 2, MPI_INT, MPI_MAX, in->MPIInfo->comm );
62         global_min_id=-global_id_range[0];
63         global_max_id=global_id_range[1];
64      #else
65         global_min_id=min_id;
66         global_max_id=max_id;
67      #endif
68    #ifdef Finley_TRACE    #ifdef Finley_TRACE
69    printf("Node id range is %d:%d\n",min_id,max_id);    printf("Node id range used by elements is %d:%d\n",global_min_id,global_max_id);
70    #endif    #endif
71        if (min_id>max_id) {
72    /*  allocate a new node file used to gather existing node file: */       max_id=-1;
73           min_id=0;
   len=max_id-min_id+1;  
   newNodeFile=Finley_NodeFile_alloc(numDim);  
   if (Finley_ErrorCode!=NO_ERROR) goto clean;  
   
   maskNodes=TMPMEMALLOC(len,maybelong);  
   if (Finley_checkPtr(maskNodes)) goto clean;  
   
   maskElements=TMPMEMALLOC(len,maybelong);  
   if (Finley_checkPtr(maskElements)) goto clean;  
   
   index=TMPMEMALLOC(in->Nodes->numNodes,maybelong);  
   if (Finley_checkPtr(maskElements)) goto clean;  
   
   Finley_NodeFile_allocTable(newNodeFile,len);  
   if (Finley_ErrorCode!=NO_ERROR) goto clean;  
   
   #pragma omp parallel for private(n) schedule(static)  
   for (n=0;n<in->Nodes->numNodes;n++) index[n]=-1;  
   #pragma omp parallel for private(n) schedule(static)  
   for (n=0;n<len;n++) {  
          maskNodes[n]=-1;  
          maskElements[n]=-1;  
74    }    }
   /*  mark the nodes referred by elements in maskElements: */  
75        
76    Finley_Mesh_markNodes(maskElements,min_id,in,FALSE);    /* allocate mappings for new local node labeling to global node labeling (newLocalToGlobalNodeLabels)
77         and global node labeling to the new local node labeling (globalToNewLocalNodeLabels[i-min_id] is the
78    /*  mark defined nodes */       new local id of global node i) */
79      len=max_id-min_id+1;
80    #pragma omp parallel for private(k) schedule(static)    globalToNewLocalNodeLabels=TMPMEMALLOC(len,index_t); /* local mask for used nodes */
81    for (k=0;k<in->Nodes->numNodes;k++) maskNodes[in->Nodes->Id[k]-min_id]=1;    newLocalToGlobalNodeLabels=TMPMEMALLOC(len,index_t);
82      if (! ( (Finley_checkPtr(globalToNewLocalNodeLabels) && Finley_checkPtr(newLocalToGlobalNodeLabels) ) ) ) {
83    /*  check if all referenced nodes are actually defined: */  
84           #pragma omp parallel
85    #pragma omp parallel for private(k) schedule(static)         {
86    for (k=0;k<len;k++) {             #pragma omp for private(n) schedule(static)
87       /* if a node is refered by an element is there a node defined ?*/             for (n=0;n<len;n++) newLocalToGlobalNodeLabels[n]=-1;
88       if (maskElements[k]>=0 && maskNodes[k]<0) {             #pragma omp for private(n) schedule(static)
89         Finley_ErrorCode=VALUE_ERROR;             for (n=0;n<len;n++) globalToNewLocalNodeLabels[n]=-1;
90         sprintf(Finley_ErrorMsg,"Node id %d is referenced by element but is not defined.",k+min_id);         }
91       }  
92           /*  mark the nodes referred by elements in globalToNewLocalNodeLabels which is currently used as a mask: */
93    
94           Finley_Mesh_markNodes(globalToNewLocalNodeLabels,min_id,in,FALSE);
95    
96           /* create a local labeling newLocalToGlobalNodeLabels of the local nodes by packing the mask globalToNewLocalNodeLabels*/
97    
98           newNumNodes=Finley_Util_packMask(len,globalToNewLocalNodeLabels,newLocalToGlobalNodeLabels);
99    
100           /* invert the new labeling and shift the index newLocalToGlobalNodeLabels to global node ids */
101           #pragma omp parallel for private(n) schedule(static)
102           for (n=0;n<newNumNodes;n++) {
103    #ifdef BOUNDS_CHECK
104           if (n >= len || n < 0) { printf("BOUNDS_CHECK %s %d n=%d\n", __FILE__, __LINE__, n); exit(1); }
105           if (newLocalToGlobalNodeLabels[n] >= len || newLocalToGlobalNodeLabels[n] < 0) { printf("BOUNDS_CHECK %s %d n=%d\n", __FILE__, __LINE__, n); exit(1); }
106    #endif
107                  globalToNewLocalNodeLabels[newLocalToGlobalNodeLabels[n]]=n;
108                  newLocalToGlobalNodeLabels[n]+=min_id;
109            }
110            /* create a new table */
111            newNodeFile=Finley_NodeFile_alloc(numDim,in->MPIInfo);
112            if (Finley_noError()) {
113               Finley_NodeFile_allocTable(newNodeFile,newNumNodes);
114            }
115            if (Finley_noError())
116                Finley_NodeFile_gather_global(newLocalToGlobalNodeLabels,in->Nodes, newNodeFile);
117            if (Finley_noError()) {
118               Finley_NodeFile_free(in->Nodes);
119               in->Nodes=newNodeFile;
120               /*  relable nodes of the elements: */
121               Finley_Mesh_relableElementNodes(globalToNewLocalNodeLabels,min_id,in);
122            }
123    }    }
124      TMPMEMFREE(globalToNewLocalNodeLabels);
125    if (Finley_ErrorCode==NO_ERROR) {    TMPMEMFREE(newLocalToGlobalNodeLabels);
126        if (! Finley_noError()) {
127        /*  scatter the nodefile in->nodes into newNodeFile using index; */         Finley_NodeFile_free(newNodeFile);
       #pragma omp parallel for private(k) schedule(static)  
       for (k=0;k<in->Nodes->numNodes;k++) index[k]=in->Nodes->Id[k]-min_id;  
       Finley_NodeFile_scatter(index,in->Nodes,newNodeFile);  
     
       /*  relable used nodes: */  
       /* index maps the new node labeling onto the old one */  
       newNumNodes=Finley_Util_packMask(len,maskElements,index);  
       #pragma omp parallel for private(k) schedule(static)  
       for (k=0;k<newNumNodes;k++) maskElements[index[k]]=k;  
   
       /*  create a new table of nodes: */  
       Finley_NodeFile_deallocTable(in->Nodes);  
       Finley_NodeFile_allocTable(in->Nodes,newNumNodes);  
       if (Finley_ErrorCode!=NO_ERROR) goto clean;  
   
       /* gather the new nodefile into in->Nodes */  
       Finley_NodeFile_gather(index,newNodeFile,in->Nodes);  
   
       /*  relable nodes of the elements: */  
       Finley_Mesh_relableElementNodes(maskElements,min_id,in);  
   
128    }    }
   
   /*  clean-up: */  
     
   clean: TMPMEMFREE(maskNodes);  
          TMPMEMFREE(maskElements);  
          TMPMEMFREE(index);  
          Finley_NodeFile_deallocTable(newNodeFile);  
          Finley_NodeFile_dealloc(newNodeFile);  
129  }  }
   
 /*  
 * $Log$  
 * Revision 1.4  2004/12/15 07:08:33  jgs  
 * *** empty log message ***  
 *  
 *  
 *  
 */  
   

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