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

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Revision 102 - (hide annotations)
Wed Dec 15 07:08:39 2004 UTC (15 years, 1 month ago) by jgs
Original Path: trunk/esys2/finley/src/finleyC/Assemble_gradient.c
File MIME type: text/plain
File size: 7362 byte(s)
*** empty log message ***

1 jgs 82 /* $Id$ */
2    
3     /**************************************************************/
4    
5     /* assemblage routines: calculate the gradient of nodal data at quadrature points */
6    
7     /**************************************************************/
8    
9     /* Copyrights by ACcESS Australia, 2003,2004 */
10     /* author: gross@access.edu.au */
11     /* Version: $Id$ */
12    
13     /**************************************************************/
14    
15     #include "escript/Data/DataC.h"
16     #include "Common.h"
17     #include "Finley.h"
18     #include "Assemble.h"
19     #include "NodeFile.h"
20     #include "ElementFile.h"
21     #include "Util.h"
22     #ifdef _OPENMP
23     #include <omp.h>
24     #endif
25     /*****************************************************************/
26    
27    
28     void Finley_Assemble_gradient(Finley_NodeFile* nodes, Finley_ElementFile* elements,
29     escriptDataC* grad_data,escriptDataC* data) {
30    
31     double *local_X=NULL, *local_data=NULL, *dVdv=NULL, *dvdV=NULL, *Vol=NULL, *d_datadv=NULL, *gradS=NULL,*data_array;
32     int numNodes,e,node_offset,*resort_nodes,i,q,type,NS_DOF,NN_DOF,dof_offset;
33     #define NODES 0
34     #define DOF 1
35     #define REDUCED_DOF 2
36     if (nodes==NULL || elements==NULL) return;
37     int NN=elements->ReferenceElement->Type->numNodes;
38     int NS=elements->ReferenceElement->Type->numShapes;
39     int id[NN];
40     int numDim=nodes->numDim;
41     int data_type=getFunctionSpaceType(data);
42     int numComps=getDataPointSize(data);
43     int numQuad=elements->ReferenceElement->numQuadNodes;
44     for (i=0;i<NN;i++) id[i]=i;
45    
46     /* set some parameter */
47    
48     if (data_type==FINLEY_NODES) {
49     type=NODES;
50     resort_nodes=id;
51     NN_DOF=elements->ReferenceElement->Type->numNodes;
52     NS_DOF=elements->ReferenceElement->Type->numShapes;
53     gradS=elements->ReferenceElement->dSdv;
54     numNodes=nodes->numNodes;
55     } else if (data_type==FINLEY_DEGREES_OF_FREEDOM) {
56     type=DOF;
57     resort_nodes=id;
58     NN_DOF=elements->ReferenceElement->Type->numNodes;
59     NS_DOF=elements->ReferenceElement->Type->numShapes;
60     gradS=elements->ReferenceElement->dSdv;
61     numNodes=nodes->numDegreesOfFreedom;
62     } else if (data_type==FINLEY_REDUCED_DEGREES_OF_FREEDOM) {
63     type=REDUCED_DOF;
64     resort_nodes=elements->ReferenceElement->Type->linearNodes;
65     NN_DOF=elements->LinearReferenceElement->Type->numNodes;
66     NS_DOF=elements->LinearReferenceElement->Type->numShapes;
67     gradS=elements->LinearReferenceElement->dSdv;
68     numNodes=nodes->reducedNumDegreesOfFreedom;
69     } else {
70     Finley_ErrorCode=TYPE_ERROR;
71     sprintf(Finley_ErrorMsg,"Cannot calculate gradient of data");
72     }
73     if (getFunctionSpaceType(grad_data)==FINLEY_CONTACT_ELEMENTS_2) {
74     node_offset=NN-NS;
75     dof_offset=NN_DOF-NS_DOF;
76     } else {
77     node_offset=0;
78     dof_offset=0;
79     }
80    
81     /* check the dimensions of interpolated_data and data */
82    
83     if (numDim!=elements->ReferenceElement->Type->numDim) {
84     Finley_ErrorCode=TYPE_ERROR;
85     sprintf(Finley_ErrorMsg,"Gradient: Spatial and element dimension must match.");
86     } else if (! numSamplesEqual(grad_data,numQuad,elements->numElements)) {
87     Finley_ErrorCode=TYPE_ERROR;
88     sprintf(Finley_ErrorMsg,"illegal number of samples in gradient Data object");
89     } else if (! numSamplesEqual(data,1,numNodes)) {
90     Finley_ErrorCode=TYPE_ERROR;
91     sprintf(Finley_ErrorMsg,"illegal number of samples of input Data object");
92     } else if (numDim*numComps!=getDataPointSize(grad_data)) {
93     Finley_ErrorCode=TYPE_ERROR;
94     sprintf(Finley_ErrorMsg,"illegal number of components in gradient data object.");
95     } else if (!isExpanded(grad_data)) {
96     Finley_ErrorCode=TYPE_ERROR;
97     sprintf(Finley_ErrorMsg,"expanded Data object is expected for output data.");
98     }
99    
100     /* now we can start */
101    
102     if (Finley_ErrorCode==NO_ERROR) {
103     #pragma omp parallel private(local_X,local_data,dvdV,dVdv,Vol,d_datadv)
104     {
105     local_X=local_data=dVdv=dvdV=Vol=d_datadv=NULL;
106     /* allocation of work arrays */
107 jgs 102 local_X=THREAD_MEMALLOC(NS*numDim,double);
108     local_data=THREAD_MEMALLOC(NS*numComps,double);
109     dVdv=THREAD_MEMALLOC(numQuad*numDim*numDim,double);
110     dvdV=THREAD_MEMALLOC(numQuad*numDim*numDim,double);
111     Vol=THREAD_MEMALLOC(numQuad,double);
112     d_datadv=THREAD_MEMALLOC(numQuad*numComps*numDim,double);
113 jgs 82 if (!(Finley_checkPtr(local_X) || Finley_checkPtr(dVdv) || Finley_checkPtr(dvdV) || Finley_checkPtr(Vol) || Finley_checkPtr(d_datadv) || Finley_checkPtr(local_data) )) {
114     /* open the element loop */
115     #pragma omp for private(e,i,q,data_array) schedule(static)
116     for(e=0;e<elements->numElements;e++) {
117     /* gather local coordinates of nodes into local_X: */
118     Finley_Util_Gather_double(NS,&(elements->Nodes[INDEX2(node_offset,e,NN)]),numDim,nodes->Coordinates,local_X);
119     /* calculate dVdv(i,j,q)=local_X(i,n)*DSDv(n,j,q) */
120     Finley_Util_SmallMatMult(numDim,numDim*numQuad,dVdv,NS,local_X,elements->ReferenceElement->dSdv);
121     /* dvdV=invert(dVdv) */
122     Finley_Util_InvertSmallMat(numQuad,numDim,dVdv,dvdV,Vol);
123     /* gather local data into local_data(numComps,NS_DOF): */
124     switch (type) {
125     case NODES:
126     for (q=0;q<NS_DOF;q++) {
127     i=elements->Nodes[INDEX2(resort_nodes[dof_offset+q],e,NN)];
128     data_array=getSampleData(data,i);
129     Finley_copyDouble(numComps,data_array,local_data+q*numComps);
130     }
131     break;
132     case DOF:
133     for (q=0;q<NS_DOF;q++) {
134     i=elements->Nodes[INDEX2(resort_nodes[dof_offset+q],e,NN)];
135     data_array=getSampleData(data,nodes->degreeOfFreedom[i]);
136     Finley_copyDouble(numComps,data_array,local_data+q*numComps);
137    
138     }
139     break;
140     case REDUCED_DOF:
141     for (q=0;q<NS_DOF;q++) {
142     i=elements->Nodes[INDEX2(resort_nodes[dof_offset+q],e,NN)];
143     data_array=getSampleData(data,nodes->reducedDegreeOfFreedom[i]);
144     Finley_copyDouble(numComps,data_array,local_data+q*numComps);
145     }
146     break;
147     }
148     /* calculate d_datadv(l,i,q)=local_data(l,n)*DSDv(n,i,q) */
149     Finley_Util_SmallMatMult(numComps,numDim*numQuad,d_datadv,NS_DOF,local_data,gradS);
150     /* calculate grad_data(l,i)=d_datadv(l,i,q)*dvdV(i,k,q) */
151     Finley_Util_SmallMatSetMult(numQuad,numComps,numDim,getSampleData(grad_data,e),numDim,d_datadv,dvdV);
152     } /* for */
153     }
154     THREAD_MEMFREE(local_X);
155     THREAD_MEMFREE(dVdv);
156     THREAD_MEMFREE(dvdV);
157     THREAD_MEMFREE(Vol);
158     THREAD_MEMFREE(local_data);
159     THREAD_MEMFREE(d_datadv);
160     }
161     }
162     #undef NODES
163     #undef DOF
164     #undef REDUCED_DOF
165     }
166     /*
167     * $Log$
168 jgs 102 * Revision 1.4 2004/12/15 07:08:32 jgs
169 jgs 97 * *** empty log message ***
170 jgs 82 *
171 jgs 97 *
172 jgs 82 *
173     */

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