1 #ifndef lint 2 static char vcid[] = "$Id: gcreate.c,v 1.72 1996/03/19 21:27:41 bsmith Exp balay $"; 3 #endif 4 5 #include "sys.h" 6 #include "mat.h" /*I "mat.h" I*/ 7 8 /*@C 9 MatGetTypeFromOptions - Determines from the options database what matrix 10 format the user has specified. 11 12 Input Parameter: 13 . comm - the MPI communicator 14 . type - the type of matrix desired, for example MATSEQAIJ, MATMPIAIJ 15 . pre - optional string to prepend to the name 16 17 Output Parameters: 18 . set - flag indicating whether user set matrix type option. 19 20 Note: 21 This routine is automatically called within MatCreate(). 22 23 .keywords: matrix, get, format, from, options 24 25 .seealso: MatCreate() 26 @*/ 27 28 int MatGetTypeFromOptions(MPI_Comm comm,char *pre,MatType *type,int *set) 29 { 30 int size,flg1,flg2,flg3,flg4,flg5,flg8,flg9,flg10,flg12,flg13,ierr,flg11; 31 char p[64]; 32 33 PetscStrcpy(p,"-"); 34 if (pre) PetscStrcat(p,pre); 35 36 MPI_Comm_size(comm,&size); 37 ierr = OptionsHasName(PETSC_NULL,"-help",&flg1); CHKERRQ(ierr); 38 if (flg1) { 39 PetscPrintf(comm,"Matrix format options:\n"); 40 PetscPrintf(comm," %smat_aij, %smat_seqaij, %smat_mpiaij\n",p,p,p); 41 PetscPrintf(comm," %smat_dense, %smat_seqdense, %smat_mpidense\n",p,p,p); 42 PetscPrintf(comm," %smat_mpirowbs, %smat_bdiag, %smat_seqbdiag, %smat_mpibdiag\n",p,p,p,p); 43 } 44 ierr = OptionsHasName(pre,"-mat_seqdense",&flg1); CHKERRQ(ierr); 45 ierr = OptionsHasName(pre,"-mat_mpidense",&flg2); CHKERRQ(ierr); 46 ierr = OptionsHasName(pre,"-mat_seqbdiag",&flg3); CHKERRQ(ierr); 47 ierr = OptionsHasName(pre,"-mat_mpibdiag",&flg4); CHKERRQ(ierr); 48 ierr = OptionsHasName(pre,"-mat_mpirowbs",&flg5); CHKERRQ(ierr); 49 ierr = OptionsHasName(pre,"-mat_seqbaij",&flg11); CHKERRQ(ierr); 50 ierr = OptionsHasName(pre,"-mat_mpiaij",&flg8); CHKERRQ(ierr); 51 ierr = OptionsHasName(pre,"-mat_seqaij",&flg9); CHKERRQ(ierr); 52 ierr = OptionsHasName(pre,"-mat_aij",&flg10); CHKERRQ(ierr); 53 ierr = OptionsHasName(pre,"-mat_bdiag",&flg12); CHKERRQ(ierr); 54 ierr = OptionsHasName(pre,"-mat_dense",&flg13); CHKERRQ(ierr); 55 if (flg1) { 56 *type = MATSEQDENSE; 57 *set = 1; 58 } 59 else if (flg2) { 60 *type = MATMPIDENSE; 61 *set = 1; 62 } 63 else if (flg3) { 64 *type = MATSEQBDIAG; 65 *set = 1; 66 } 67 else if (flg4) { 68 *type = MATMPIBDIAG; 69 *set = 1; 70 } 71 else if (flg5) { 72 *type = MATMPIROWBS; 73 *set = 1; 74 } 75 else if (flg8) { 76 *type = MATMPIAIJ; 77 *set = 1; 78 } 79 else if (flg9){ 80 *type = MATSEQAIJ; 81 *set = 1; 82 } 83 else if (flg10){ 84 if (size == 1) *type = MATSEQAIJ; 85 else *type = MATMPIAIJ; 86 *set = 1; 87 } 88 else if (flg11){ 89 *type = MATSEQBAIJ; 90 *set = 1; 91 } 92 else if (flg12){ 93 if (size == 1) *type = MATSEQBDIAG; 94 else *type = MATMPIBDIAG; 95 *set = 1; 96 } 97 else if (flg13){ 98 if (size == 1) *type = MATSEQDENSE; 99 else *type = MATMPIDENSE; 100 *set = 1; 101 } 102 else { 103 if (size == 1) *type = MATSEQAIJ; 104 else *type = MATMPIAIJ; 105 *set = 0; 106 } 107 return 0; 108 } 109 110 /*@C 111 MatCreate - Creates a matrix, where the type is determined 112 from the options database. Generates a parallel MPI matrix if the 113 communicator has more than one processor. 114 115 Input Parameters: 116 . m - number of global rows 117 . n - number of global columns 118 . comm - MPI communicator 119 120 Output Parameter: 121 . V - location to stash resulting matrix 122 123 Options Database Keywords: 124 $ -mat_seqaij : AIJ type, uses MatCreateSeqAIJ 125 $ -mat_mpiaij : AIJ type, uses MatCreateMPIAIJ 126 $ -mat_aij : AIJ type, (Seq or MPI depending on comm) 127 $ -mat_seqbdiag : block diagonal type, uses 128 $ MatCreateSeqBDiag() 129 $ -mat_mpibdiag : block diagonal type, uses 130 $ MatCreateMPIBDiag() 131 $ -mat_bdiag : block diagonal type, 132 $ (Seq or MPI depending on comm) 133 $ -mat_mpirowbs : rowbs type, uses MatCreateMPIRowbs() 134 $ -mat_dense : dense type, (Seq or MPI depending on comm) 135 $ -mat_seqdense : dense type, uses MatCreateSeqDense() 136 $ -mat_mpidense : dense type, uses MatCreateMPIDense() 137 138 Notes: 139 The default matrix type is AIJ, using MatCreateSeqAIJ() and 140 MatCreateMPIAIJ(). 141 142 .keywords: matrix, create, initial 143 144 .seealso: MatCreateSeqAIJ((), MatCreateMPIAIJ(), 145 MatCreateSeqBDiag(),MatCreateMPIBDiag(), 146 MatCreateSeqDense(), MatCreateMPIDense(), 147 MatCreateMPIRowbs(), MatConvert() 148 MatGetTypeFromOptions() 149 @*/ 150 int MatCreate(MPI_Comm comm,int m,int n,Mat *V) 151 { 152 MatType type; 153 int set,ierr,bs=1,flg; 154 155 ierr = MatGetTypeFromOptions(comm,0,&type,&set); CHKERRQ(ierr); 156 if (type == MATSEQDENSE) 157 return MatCreateSeqDense(comm,m,n,PETSC_NULL,V); 158 if (type == MATMPIBDIAG) 159 return MatCreateMPIBDiag(comm,PETSC_DECIDE,m,n,PETSC_DEFAULT,PETSC_DEFAULT, 160 PETSC_NULL,PETSC_NULL,V); 161 if (type == MATSEQBDIAG) 162 return MatCreateSeqBDiag(comm,m,n,PETSC_DEFAULT,PETSC_DEFAULT,PETSC_NULL, 163 PETSC_NULL,V); 164 if (type == MATMPIROWBS) 165 return MatCreateMPIRowbs(comm,PETSC_DECIDE,m,PETSC_DEFAULT,PETSC_NULL,PETSC_NULL,V); 166 if (type == MATMPIDENSE) 167 return MatCreateMPIDense(comm,PETSC_DECIDE,PETSC_DECIDE,m,n,PETSC_NULL,V); 168 if (type == MATMPIAIJ) 169 return MatCreateMPIAIJ(comm,PETSC_DECIDE,PETSC_DECIDE,m,n,PETSC_DEFAULT, 170 PETSC_NULL,PETSC_DEFAULT,PETSC_NULL,V); 171 if (type == MATSEQBAIJ){ 172 ierr = OptionsGetInt(PETSC_NULL,"-mat_block_size",&bs,&flg);CHKERRQ(ierr); 173 return MatCreateSeqBAIJ(comm,bs,m,n,PETSC_DEFAULT,PETSC_NULL,V); 174 } 175 return MatCreateSeqAIJ(comm,m,n,PETSC_DEFAULT,PETSC_NULL,V); 176 } 177 178 #include "matimpl.h" 179 /*@C 180 MatGetType - Gets the matrix type and name (as a string) from the matrix. 181 182 Input Parameter: 183 . mat - the matrix 184 185 Output Parameter: 186 . type - the matrix type (or use PETSC_NULL) 187 . name - name of matrix type (or use PETSC_NULL) 188 189 .keywords: matrix, get, type, name 190 @*/ 191 int MatGetType(Mat mat,MatType *type,char **name) 192 { 193 int itype = (int)mat->type; 194 char *matname[10]; 195 196 if (type) *type = (MatType) mat->type; 197 if (name) { 198 /* Note: Be sure that this list corresponds to the enum in mat.h */ 199 matname[0] = "MATSEQDENSE"; 200 matname[1] = "MATSEQAIJ"; 201 matname[2] = "MATMPIAIJ"; 202 matname[3] = "MATSHELL"; 203 matname[4] = "MATMPIROWBS"; 204 matname[5] = "MATSEQBDIAG"; 205 matname[6] = "MATMPIBDIAG"; 206 matname[7] = "MATMPIDENSE"; 207 if (itype < 0 || itype > 7) *name = "Unknown matrix type"; 208 else *name = matname[itype]; 209 } 210 return 0; 211 } 212 213 214 215