1 2 #include <../src/mat/impls/aij/seq/aij.h> 3 #include <../src/mat/impls/baij/seq/baij.h> 4 #include <../src/mat/impls/sbaij/seq/sbaij.h> 5 6 EXTERN_C_BEGIN 7 #undef __FUNCT__ 8 #define __FUNCT__ "MatConvert_SeqSBAIJ_SeqAIJ" 9 PetscErrorCode MatConvert_SeqSBAIJ_SeqAIJ(Mat A, MatType newtype,MatReuse reuse,Mat *newmat) 10 { 11 Mat B; 12 Mat_SeqSBAIJ *a = (Mat_SeqSBAIJ*)A->data; 13 Mat_SeqAIJ *b; 14 PetscErrorCode ierr; 15 PetscInt *ai=a->i,*aj=a->j,m=A->rmap->N,n=A->cmap->n,i,j,k,*bi,*bj,*rowlengths,nz,*rowstart,itmp; 16 PetscInt bs=A->rmap->bs,bs2=bs*bs,mbs=A->rmap->N/bs,diagcnt=0; 17 MatScalar *av,*bv; 18 19 PetscFunctionBegin; 20 /* compute rowlengths of newmat */ 21 ierr = PetscMalloc2(m,PetscInt,&rowlengths,m+1,PetscInt,&rowstart);CHKERRQ(ierr); 22 23 for (i=0; i<mbs; i++) rowlengths[i*bs] = 0; 24 aj = a->j; 25 k = 0; 26 for (i=0; i<mbs; i++) { 27 nz = ai[i+1] - ai[i]; 28 if (nz) { 29 rowlengths[k] += nz; /* no. of upper triangular blocks */ 30 if (*aj == i) {aj++;diagcnt++;nz--;} /* skip diagonal */ 31 for (j=0; j<nz; j++) { /* no. of lower triangular blocks */ 32 rowlengths[(*aj)*bs]++; aj++; 33 } 34 } 35 rowlengths[k] *= bs; 36 for (j=1; j<bs; j++) { 37 rowlengths[k+j] = rowlengths[k]; 38 } 39 k += bs; 40 /* printf(" rowlengths[%d]: %d\n",i, rowlengths[i]); */ 41 } 42 43 ierr = MatCreate(((PetscObject)A)->comm,&B);CHKERRQ(ierr); 44 ierr = MatSetSizes(B,m,n,m,n);CHKERRQ(ierr); 45 ierr = MatSetType(B,MATSEQAIJ);CHKERRQ(ierr); 46 ierr = MatSeqAIJSetPreallocation(B,0,rowlengths);CHKERRQ(ierr); 47 ierr = MatSetOption(B,MAT_ROW_ORIENTED,PETSC_FALSE);CHKERRQ(ierr); 48 B->rmap->bs = A->rmap->bs; 49 50 b = (Mat_SeqAIJ*)(B->data); 51 bi = b->i; 52 bj = b->j; 53 bv = b->a; 54 55 /* set b->i */ 56 bi[0] = 0; rowstart[0] = 0; 57 for (i=0; i<mbs; i++) { 58 for (j=0; j<bs; j++) { 59 b->ilen[i*bs+j] = rowlengths[i*bs]; 60 rowstart[i*bs+j+1] = rowstart[i*bs+j] + rowlengths[i*bs]; 61 } 62 bi[i+1] = bi[i] + rowlengths[i*bs]/bs; 63 } 64 if (bi[mbs] != 2*a->nz - diagcnt) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_PLIB,"bi[mbs]: %D != 2*a->nz-diagcnt: %D\n",bi[mbs],2*a->nz - diagcnt); 65 66 /* set b->j and b->a */ 67 aj = a->j; av = a->a; 68 for (i=0; i<mbs; i++) { 69 nz = ai[i+1] - ai[i]; 70 /* diagonal block */ 71 if (nz && *aj == i) { 72 nz--; 73 for (j=0; j<bs; j++) { /* row i*bs+j */ 74 itmp = i*bs+j; 75 for (k=0; k<bs; k++) { /* col i*bs+k */ 76 *(bj + rowstart[itmp]) = (*aj)*bs+k; 77 *(bv + rowstart[itmp]) = *(av+k*bs+j); 78 rowstart[itmp]++; 79 } 80 } 81 aj++; av += bs2; 82 } 83 84 while (nz--) { 85 /* lower triangular blocks */ 86 for (j=0; j<bs; j++) { /* row (*aj)*bs+j */ 87 itmp = (*aj)*bs+j; 88 for (k=0; k<bs; k++) { /* col i*bs+k */ 89 *(bj + rowstart[itmp]) = i*bs+k; 90 *(bv + rowstart[itmp]) = *(av+j*bs+k); 91 rowstart[itmp]++; 92 } 93 } 94 /* upper triangular blocks */ 95 for (j=0; j<bs; j++) { /* row i*bs+j */ 96 itmp = i*bs+j; 97 for (k=0; k<bs; k++) { /* col (*aj)*bs+k */ 98 *(bj + rowstart[itmp]) = (*aj)*bs+k; 99 *(bv + rowstart[itmp]) = *(av+k*bs+j); 100 rowstart[itmp]++; 101 } 102 } 103 aj++; av += bs2; 104 } 105 } 106 ierr = PetscFree2(rowlengths,rowstart);CHKERRQ(ierr); 107 ierr = MatAssemblyBegin(B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 108 ierr = MatAssemblyEnd(B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 109 110 if (reuse == MAT_REUSE_MATRIX) { 111 ierr = MatHeaderReplace(A,B);CHKERRQ(ierr); 112 } else { 113 *newmat = B; 114 } 115 PetscFunctionReturn(0); 116 } 117 EXTERN_C_END 118 119 EXTERN_C_BEGIN 120 #undef __FUNCT__ 121 #define __FUNCT__ "MatConvert_SeqAIJ_SeqSBAIJ" 122 PetscErrorCode MatConvert_SeqAIJ_SeqSBAIJ(Mat A,MatType newtype,MatReuse reuse,Mat *newmat) 123 { 124 Mat B; 125 Mat_SeqAIJ *a = (Mat_SeqAIJ*)A->data; 126 Mat_SeqSBAIJ *b; 127 PetscErrorCode ierr; 128 PetscInt *ai=a->i,*aj,m=A->rmap->N,n=A->cmap->N,i,j,*bi,*bj,*rowlengths; 129 MatScalar *av,*bv; 130 131 PetscFunctionBegin; 132 if (!A->symmetric) SETERRQ(((PetscObject)A)->comm,PETSC_ERR_USER,"Matrix must be symmetric. Call MatSetOption(mat,MAT_SYMMETRIC,PETSC_TRUE)"); 133 if (n != m) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"Matrix must be square"); 134 135 ierr = PetscMalloc(m*sizeof(PetscInt),&rowlengths);CHKERRQ(ierr); 136 for (i=0; i<m; i++) { 137 rowlengths[i] = ai[i+1] - a->diag[i]; 138 } 139 ierr = MatCreate(((PetscObject)A)->comm,&B);CHKERRQ(ierr); 140 ierr = MatSetSizes(B,m,n,m,n);CHKERRQ(ierr); 141 ierr = MatSetType(B,MATSEQSBAIJ);CHKERRQ(ierr); 142 ierr = MatSeqSBAIJSetPreallocation_SeqSBAIJ(B,1,0,rowlengths);CHKERRQ(ierr); 143 144 ierr = MatSetOption(B,MAT_ROW_ORIENTED,PETSC_TRUE);CHKERRQ(ierr); 145 146 b = (Mat_SeqSBAIJ*)(B->data); 147 bi = b->i; 148 bj = b->j; 149 bv = b->a; 150 151 bi[0] = 0; 152 for (i=0; i<m; i++) { 153 aj = a->j + a->diag[i]; 154 av = a->a + a->diag[i]; 155 for (j=0; j<rowlengths[i]; j++) { 156 *bj = *aj; bj++; aj++; 157 *bv = *av; bv++; av++; 158 } 159 bi[i+1] = bi[i] + rowlengths[i]; 160 b->ilen[i] = rowlengths[i]; 161 } 162 163 ierr = PetscFree(rowlengths);CHKERRQ(ierr); 164 ierr = MatAssemblyBegin(B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 165 ierr = MatAssemblyEnd(B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 166 167 if (reuse == MAT_REUSE_MATRIX) { 168 ierr = MatHeaderReplace(A,B);CHKERRQ(ierr); 169 } else { 170 *newmat = B; 171 } 172 PetscFunctionReturn(0); 173 } 174 EXTERN_C_END 175 176 EXTERN_C_BEGIN 177 #undef __FUNCT__ 178 #define __FUNCT__ "MatConvert_SeqSBAIJ_SeqBAIJ" 179 PetscErrorCode MatConvert_SeqSBAIJ_SeqBAIJ(Mat A, MatType newtype,MatReuse reuse,Mat *newmat) 180 { 181 Mat B; 182 Mat_SeqSBAIJ *a = (Mat_SeqSBAIJ*)A->data; 183 Mat_SeqBAIJ *b; 184 PetscErrorCode ierr; 185 PetscInt *ai=a->i,*aj=a->j,m=A->rmap->N,n=A->cmap->n,i,k,*bi,*bj,*browlengths,nz,*browstart,itmp; 186 PetscInt bs=A->rmap->bs,bs2=bs*bs,mbs=m/bs,col,row; 187 MatScalar *av,*bv; 188 189 PetscFunctionBegin; 190 /* compute browlengths of newmat */ 191 ierr = PetscMalloc2(mbs,PetscInt,&browlengths,mbs,PetscInt,&browstart);CHKERRQ(ierr); 192 for (i=0; i<mbs; i++) browlengths[i] = 0; 193 aj = a->j; 194 for (i=0; i<mbs; i++) { 195 nz = ai[i+1] - ai[i]; 196 aj++; /* skip diagonal */ 197 for (k=1; k<nz; k++) { /* no. of lower triangular blocks */ 198 browlengths[*aj]++; aj++; 199 } 200 browlengths[i] += nz; /* no. of upper triangular blocks */ 201 } 202 203 ierr = MatCreate(((PetscObject)A)->comm,&B);CHKERRQ(ierr); 204 ierr = MatSetSizes(B,m,n,m,n);CHKERRQ(ierr); 205 ierr = MatSetType(B,MATSEQBAIJ);CHKERRQ(ierr); 206 ierr = MatSeqBAIJSetPreallocation(B,bs,0,browlengths);CHKERRQ(ierr); 207 ierr = MatSetOption(B,MAT_ROW_ORIENTED,PETSC_TRUE);CHKERRQ(ierr); 208 209 b = (Mat_SeqBAIJ*)(B->data); 210 bi = b->i; 211 bj = b->j; 212 bv = b->a; 213 214 /* set b->i */ 215 bi[0] = 0; 216 for (i=0; i<mbs; i++) { 217 b->ilen[i] = browlengths[i]; 218 bi[i+1] = bi[i] + browlengths[i]; 219 browstart[i] = bi[i]; 220 } 221 if (bi[mbs] != 2*a->nz - mbs) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_PLIB,"bi[mbs]: %D != 2*a->nz - mbs: %D\n",bi[mbs],2*a->nz - mbs); 222 223 /* set b->j and b->a */ 224 aj = a->j; av = a->a; 225 for (i=0; i<mbs; i++) { 226 /* diagonal block */ 227 *(bj + browstart[i]) = *aj; aj++; 228 itmp = bs2*browstart[i]; 229 for (k=0; k<bs2; k++) { 230 *(bv + itmp + k) = *av; av++; 231 } 232 browstart[i]++; 233 234 nz = ai[i+1] - ai[i] -1; 235 while (nz--) { 236 /* lower triangular blocks - transpose blocks of A */ 237 *(bj + browstart[*aj]) = i; /* block col index */ 238 itmp = bs2*browstart[*aj]; /* row index */ 239 for (col=0; col<bs; col++) { 240 k = col; 241 for (row=0; row<bs; row++) { 242 bv[itmp + col*bs+row] = av[k]; k+=bs; 243 } 244 } 245 browstart[*aj]++; 246 247 /* upper triangular blocks */ 248 *(bj + browstart[i]) = *aj; aj++; 249 itmp = bs2*browstart[i]; 250 for (k=0; k<bs2; k++) { 251 bv[itmp + k] = av[k]; 252 } 253 av += bs2; 254 browstart[i]++; 255 } 256 } 257 ierr = PetscFree2(browlengths,browstart);CHKERRQ(ierr); 258 ierr = MatAssemblyBegin(B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 259 ierr = MatAssemblyEnd(B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 260 261 if (reuse == MAT_REUSE_MATRIX) { 262 ierr = MatHeaderReplace(A,B);CHKERRQ(ierr); 263 } else { 264 *newmat = B; 265 } 266 PetscFunctionReturn(0); 267 } 268 EXTERN_C_END 269 270 EXTERN_C_BEGIN 271 #undef __FUNCT__ 272 #define __FUNCT__ "MatConvert_SeqBAIJ_SeqSBAIJ" 273 PetscErrorCode MatConvert_SeqBAIJ_SeqSBAIJ(Mat A, MatType newtype,MatReuse reuse,Mat *newmat) 274 { 275 Mat B; 276 Mat_SeqBAIJ *a = (Mat_SeqBAIJ*)A->data; 277 Mat_SeqSBAIJ *b; 278 PetscErrorCode ierr; 279 PetscInt *ai=a->i,*aj,m=A->rmap->N,n=A->cmap->n,i,j,k,*bi,*bj,*browlengths; 280 PetscInt bs=A->rmap->bs,bs2=bs*bs,mbs=m/bs,dd; 281 MatScalar *av,*bv; 282 PetscBool flg; 283 284 PetscFunctionBegin; 285 if (!A->symmetric) SETERRQ(((PetscObject)A)->comm,PETSC_ERR_USER,"Matrix must be symmetric. Call MatSetOption(mat,MAT_SYMMETRIC,PETSC_TRUE)"); 286 if (n != m) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"Matrix must be square"); 287 ierr = MatMissingDiagonal_SeqBAIJ(A,&flg,&dd);CHKERRQ(ierr); /* check for missing diagonals, then mark diag */ 288 if (flg) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE,"Matrix is missing diagonal %D",dd); 289 290 ierr = PetscMalloc(mbs*sizeof(PetscInt),&browlengths);CHKERRQ(ierr); 291 for (i=0; i<mbs; i++) { 292 browlengths[i] = ai[i+1] - a->diag[i]; 293 } 294 295 ierr = MatCreate(((PetscObject)A)->comm,&B);CHKERRQ(ierr); 296 ierr = MatSetSizes(B,m,n,m,n);CHKERRQ(ierr); 297 ierr = MatSetType(B,MATSEQSBAIJ);CHKERRQ(ierr); 298 ierr = MatSeqSBAIJSetPreallocation_SeqSBAIJ(B,bs,0,browlengths);CHKERRQ(ierr); 299 ierr = MatSetOption(B,MAT_ROW_ORIENTED,PETSC_TRUE);CHKERRQ(ierr); 300 301 b = (Mat_SeqSBAIJ*)(B->data); 302 bi = b->i; 303 bj = b->j; 304 bv = b->a; 305 306 bi[0] = 0; 307 for (i=0; i<mbs; i++) { 308 aj = a->j + a->diag[i]; 309 av = a->a + (a->diag[i])*bs2; 310 for (j=0; j<browlengths[i]; j++) { 311 *bj = *aj; bj++; aj++; 312 for (k=0; k<bs2; k++) { 313 *bv = *av; bv++; av++; 314 } 315 } 316 bi[i+1] = bi[i] + browlengths[i]; 317 b->ilen[i] = browlengths[i]; 318 } 319 ierr = PetscFree(browlengths);CHKERRQ(ierr); 320 ierr = MatAssemblyBegin(B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 321 ierr = MatAssemblyEnd(B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 322 323 if (reuse == MAT_REUSE_MATRIX) { 324 ierr = MatHeaderReplace(A,B);CHKERRQ(ierr); 325 } else { 326 *newmat = B; 327 } 328 PetscFunctionReturn(0); 329 } 330 EXTERN_C_END 331