/[escript]/trunk/paso/src/SolverFCT.c
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Annotation of /trunk/paso/src/SolverFCT.c

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Revision 1415 - (hide annotations)
Thu Feb 21 04:57:17 2008 UTC (11 years, 11 months ago) by ksteube
File MIME type: text/plain
File size: 5907 byte(s)
Recent fixes have remedied problems with running OpenMP/MPI mixed mode programming.

1 gross 1361 /* $Id:$ */
2    
3     /*******************************************************
4     *
5     * Copyright 2007 by University of Queensland
6     *
7     * http://esscc.uq.edu.au
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 gross 1362 /* Paso: FCTransportProblem */
17 gross 1361
18     /**************************************************************/
19    
20     /* Author: l.gross@uq.edu.au */
21    
22     /**************************************************************/
23    
24    
25     #include "Paso.h"
26     #include "SolverFCT.h"
27     #include "PasoUtil.h"
28    
29    
30 gross 1362 /**************************************************************/
31 gross 1361
32 gross 1362 /* free all memory used by */
33     void Paso_FCTransportProblem_free(Paso_FCTransportProblem* in) {
34     if (in!=NULL) {
35     in->reference_counter--;
36     if (in->reference_counter<=0) {
37 gross 1361
38 gross 1362 Paso_SystemMatrix_free(in->transport_matrix);
39 gross 1407 Paso_SystemMatrix_free(in->mass_matrix);
40     Paso_SystemMatrix_free(in->iteration_matrix);
41 gross 1362 Paso_MPIInfo_free(in->mpi_info);
42 gross 1364 MEMFREE(in->u);
43 gross 1407 MEMFREE(in->main_iptr);
44 gross 1362 MEMFREE(in->lumped_mass_matrix);
45 gross 1407 MEMFREE(in->main_diagonal_low_order_transport_matrix);
46 gross 1362 MEMFREE(in);
47     }
48     }
49     }
50 gross 1361
51 gross 1362 Paso_FCTransportProblem* Paso_FCTransportProblem_getReference(Paso_FCTransportProblem* in) {
52 gross 1361 if (in!=NULL) {
53 gross 1362 ++(in->reference_counter);
54 gross 1361 }
55 gross 1367 return in;
56 gross 1362 }
57    
58     Paso_SystemMatrix* Paso_FCTransportProblem_borrowTransportMatrix(Paso_FCTransportProblem* in) {
59     return in->transport_matrix;
60 gross 1361 }
61 gross 1407 Paso_SystemMatrix* Paso_FCTransportProblem_borrowMassMatrix(Paso_FCTransportProblem* in) {
62     return in->mass_matrix;
63 gross 1362 }
64 gross 1361
65 gross 1362 double* Paso_FCTransportProblem_borrowLumpedMassMatrix(Paso_FCTransportProblem* in) {
66     return in->lumped_mass_matrix;
67     }
68 gross 1361
69 gross 1362 dim_t Paso_FCTransportProblem_getTotalNumRows(Paso_FCTransportProblem* in) {
70     return Paso_SystemMatrix_getTotalNumRows(in->transport_matrix);
71     }
72 gross 1361
73 gross 1407 Paso_FCTransportProblem* Paso_FCTransportProblem_alloc(double theta, Paso_SystemMatrixPattern *pattern, int block_size
74 gross 1361
75 gross 1362
76     ) {
77     Paso_SystemMatrixType matrix_type=MATRIX_FORMAT_DEFAULT+MATRIX_FORMAT_BLK1; /* at the moment only block size 1 is supported */
78     Paso_FCTransportProblem* out=NULL;
79     dim_t n,i;
80     index_t iptr,iptr_main,k;
81    
82     if ((theta<0.) || (theta >1.)) {
83     Paso_setError(TYPE_ERROR,"Paso_FCTransportProblem_alloc: theta needs to be between 0. and. 1.");
84 gross 1361 return NULL;
85 gross 1362 }
86 gross 1361
87 gross 1362 out=MEMALLOC(1,Paso_FCTransportProblem);
88     if (Paso_checkPtr(out)) return NULL;
89 gross 1361
90 gross 1407
91 gross 1362 out->theta=theta;
92 gross 1407 out->dt_max=LARGE_POSITIVE_FLOAT;
93 gross 1363 out->valid_matrices=FALSE;
94 gross 1362 out->transport_matrix=Paso_SystemMatrix_alloc(matrix_type,pattern,block_size,block_size);
95     Paso_SystemMatrix_allocBuffer(out->transport_matrix);
96 gross 1407 out->mass_matrix=Paso_SystemMatrix_alloc(matrix_type,pattern,block_size,block_size);
97     out->iteration_matrix=NULL;
98    
99 gross 1362 out->mpi_info=Paso_MPIInfo_getReference(pattern->mpi_info);
100 gross 1407 out->u=NULL;
101     out->u_min=0.;
102 gross 1362 out->main_iptr=NULL;
103     out->lumped_mass_matrix=NULL;
104 gross 1407 out->main_diagonal_low_order_transport_matrix=NULL;
105 gross 1361
106 gross 1362 if (Paso_noError()) {
107     n=Paso_SystemMatrix_getTotalNumRows(out->transport_matrix);
108    
109 gross 1407 out->u=MEMALLOC(n,double);
110 gross 1362 out->main_iptr=MEMALLOC(n,index_t);
111     out->lumped_mass_matrix=MEMALLOC(n,double);
112 gross 1407 out->main_diagonal_low_order_transport_matrix=MEMALLOC(n,double);
113 gross 1362
114 gross 1407 if ( ! (Paso_checkPtr(out->u) || Paso_checkPtr(out->main_iptr) ||
115     Paso_checkPtr(out->lumped_mass_matrix) || Paso_checkPtr(out->main_diagonal_low_order_transport_matrix)) ) {
116 gross 1362
117 gross 1367 #pragma omp parallel for schedule(static) private(i)
118     for (i = 0; i < n; ++i) {
119     out->lumped_mass_matrix[i]=0.;
120 gross 1407 out->main_diagonal_low_order_transport_matrix[i]=0.;
121 gross 1367 out->u[i]=0.;
122     }
123 gross 1362 /* identify the main diagonals */
124     #pragma omp parallel for schedule(static) private(i,iptr,iptr_main,k)
125     for (i = 0; i < n; ++i) {
126     iptr_main=pattern->mainPattern->ptr[0]-1;
127     for (iptr=pattern->mainPattern->ptr[i];iptr<pattern->mainPattern->ptr[i+1]; iptr++) {
128     if (pattern->mainPattern->index[iptr]==i) {
129     iptr_main=iptr;
130     break;
131     }
132     }
133     out->main_iptr[i]=iptr_main;
134     if (iptr_main==pattern->mainPattern->ptr[0]-1)
135     Paso_setError(VALUE_ERROR, "Paso_FCTransportProblem_alloc: no main diagonal");
136     }
137    
138     }
139    
140 gross 1361 }
141     if (Paso_noError()) {
142     return out;
143     } else {
144 gross 1362 Paso_FCTransportProblem_free(out);
145 gross 1361 return NULL;
146     }
147     }
148 gross 1364
149     void Paso_FCTransportProblem_checkinSolution(Paso_FCTransportProblem* in, double* u) {
150     dim_t i, n;
151 gross 1407 double local_u_min,u_min;
152 gross 1364
153     n=Paso_FCTransportProblem_getTotalNumRows(in);
154 gross 1407 u_min=LARGE_POSITIVE_FLOAT;
155     #pragma omp parallel private(local_u_min)
156     {
157     local_u_min=0.;
158     #pragma omp for schedule(static) private(i)
159 gross 1410 for (i=0;i<n;++i) local_u_min=MIN(local_u_min,u[i]);
160 gross 1407 #pragma omp critical
161     {
162     u_min=MIN(u_min,local_u_min);
163     }
164 gross 1364 }
165 gross 1407 #ifdef PASO_MPI
166     local_u_min=u_min;
167 ksteube 1415 MPI_Allreduce(&local_u_min,&u_min, 1, MPI_DOUBLE, MPI_MIN, in->mpi_info->comm);
168 gross 1407 #endif
169     in->u_min=u_min;
170 gross 1410 #pragma omp parallel for schedule(static) private(i)
171     for (i=0;i<n;++i) {
172     in->u[i]=u[i]-u_min;
173     }
174 gross 1364 }

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