1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] = "Tests copying and ordering uniprocessor row-based sparse matrices.\n\n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown #include <petscmat.h> 5c4762a1bSJed Brown 6*d71ae5a4SJacob Faibussowitsch int main(int argc, char **args) 7*d71ae5a4SJacob Faibussowitsch { 8c4762a1bSJed Brown Mat C, A; 9c4762a1bSJed Brown PetscInt i, j, m = 5, n = 5, Ii, J; 10c4762a1bSJed Brown PetscScalar v; 11c4762a1bSJed Brown IS perm, iperm; 12c4762a1bSJed Brown 13327415f7SBarry Smith PetscFunctionBeginUser; 149566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc, &args, (char *)0, help)); 159566063dSJacob Faibussowitsch PetscCall(MatCreateSeqAIJ(PETSC_COMM_SELF, m * n, m * n, 5, NULL, &C)); 16c4762a1bSJed Brown /* create the matrix for the five point stencil, YET AGAIN*/ 17c4762a1bSJed Brown for (i = 0; i < m; i++) { 18c4762a1bSJed Brown for (j = 0; j < n; j++) { 199371c9d4SSatish Balay v = -1.0; 209371c9d4SSatish Balay Ii = j + n * i; 219371c9d4SSatish Balay if (i > 0) { 229371c9d4SSatish Balay J = Ii - n; 239371c9d4SSatish Balay PetscCall(MatSetValues(C, 1, &Ii, 1, &J, &v, INSERT_VALUES)); 249371c9d4SSatish Balay } 259371c9d4SSatish Balay if (i < m - 1) { 269371c9d4SSatish Balay J = Ii + n; 279371c9d4SSatish Balay PetscCall(MatSetValues(C, 1, &Ii, 1, &J, &v, INSERT_VALUES)); 289371c9d4SSatish Balay } 299371c9d4SSatish Balay if (j > 0) { 309371c9d4SSatish Balay J = Ii - 1; 319371c9d4SSatish Balay PetscCall(MatSetValues(C, 1, &Ii, 1, &J, &v, INSERT_VALUES)); 329371c9d4SSatish Balay } 339371c9d4SSatish Balay if (j < n - 1) { 349371c9d4SSatish Balay J = Ii + 1; 359371c9d4SSatish Balay PetscCall(MatSetValues(C, 1, &Ii, 1, &J, &v, INSERT_VALUES)); 369371c9d4SSatish Balay } 379371c9d4SSatish Balay v = 4.0; 389371c9d4SSatish Balay PetscCall(MatSetValues(C, 1, &Ii, 1, &Ii, &v, INSERT_VALUES)); 39c4762a1bSJed Brown } 40c4762a1bSJed Brown } 419566063dSJacob Faibussowitsch PetscCall(MatAssemblyBegin(C, MAT_FINAL_ASSEMBLY)); 429566063dSJacob Faibussowitsch PetscCall(MatAssemblyEnd(C, MAT_FINAL_ASSEMBLY)); 43c4762a1bSJed Brown 449566063dSJacob Faibussowitsch PetscCall(MatConvert(C, MATSAME, MAT_INITIAL_MATRIX, &A)); 45c4762a1bSJed Brown 469566063dSJacob Faibussowitsch PetscCall(MatGetOrdering(A, MATORDERINGND, &perm, &iperm)); 479566063dSJacob Faibussowitsch PetscCall(ISView(perm, PETSC_VIEWER_STDOUT_SELF)); 489566063dSJacob Faibussowitsch PetscCall(ISView(iperm, PETSC_VIEWER_STDOUT_SELF)); 499566063dSJacob Faibussowitsch PetscCall(MatView(A, PETSC_VIEWER_STDOUT_SELF)); 50c4762a1bSJed Brown 519566063dSJacob Faibussowitsch PetscCall(ISDestroy(&perm)); 529566063dSJacob Faibussowitsch PetscCall(ISDestroy(&iperm)); 539566063dSJacob Faibussowitsch PetscCall(MatDestroy(&C)); 549566063dSJacob Faibussowitsch PetscCall(MatDestroy(&A)); 559566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 56b122ec5aSJacob Faibussowitsch return 0; 57c4762a1bSJed Brown } 58c4762a1bSJed Brown 59c4762a1bSJed Brown /*TEST 60c4762a1bSJed Brown 61c4762a1bSJed Brown test: 628cc725e6SPierre Jolivet filter: grep -v " MPI process" 63c4762a1bSJed Brown 64c4762a1bSJed Brown TEST*/ 65