1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] = "Tests MatCreateMPIAIJWithArrays() abd MatUpdateMPIAIJWithArrays()\n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown #include <petscmat.h> 5c4762a1bSJed Brown 6c4762a1bSJed Brown /* 7c4762a1bSJed Brown * This is an extremely simple example to test MatUpdateMPIAIJWithArrays() 8c4762a1bSJed Brown * 9c4762a1bSJed Brown * A = 10c4762a1bSJed Brown 11c4762a1bSJed Brown 1 2 0 3 0 0 12c4762a1bSJed Brown 0 4 5 0 0 6 13c4762a1bSJed Brown 7 0 8 0 9 0 14c4762a1bSJed Brown 0 10 11 12 0 13 15c4762a1bSJed Brown 0 14 15 0 0 16 16c4762a1bSJed Brown 17 0 0 0 0 18 17c4762a1bSJed Brown * 18c4762a1bSJed Brown * */ 19c4762a1bSJed Brown 20*d71ae5a4SJacob Faibussowitsch int main(int argc, char **argv) 21*d71ae5a4SJacob Faibussowitsch { 22c4762a1bSJed Brown Mat A; 239371c9d4SSatish Balay PetscInt i[3][3] = { 249371c9d4SSatish Balay {0, 3, 6}, 259371c9d4SSatish Balay {0, 3, 7}, 269371c9d4SSatish Balay {0, 3, 5} 279371c9d4SSatish Balay }; 289371c9d4SSatish Balay PetscInt j[3][7] = { 299371c9d4SSatish Balay {0, 1, 3, 1, 2, 5, -1}, 309371c9d4SSatish Balay {0, 2, 4, 1, 2, 3, 5 }, 319371c9d4SSatish Balay {1, 2, 5, 0, 5, -1, -1} 329371c9d4SSatish Balay }; 339371c9d4SSatish Balay PetscScalar a[3][7] = { 349371c9d4SSatish Balay {1, 2, 3, 4, 5, 6, -1}, 359371c9d4SSatish Balay {7, 8, 9, 10, 11, 12, 13}, 369371c9d4SSatish Balay {14, 15, 16, 17, 18, -1, -1} 379371c9d4SSatish Balay }; 389371c9d4SSatish Balay PetscScalar anew[3][7] = { 399371c9d4SSatish Balay {10, 20, 30, 40, 50, 60, -1 }, 409371c9d4SSatish Balay {70, 80, 90, 100, 110, 120, 130}, 419371c9d4SSatish Balay {140, 150, 160, 170, 180, -1, -1 } 429371c9d4SSatish Balay }; 43c4762a1bSJed Brown MPI_Comm comm; 44c4762a1bSJed Brown PetscMPIInt rank, size; 45c4762a1bSJed Brown 46327415f7SBarry Smith PetscFunctionBeginUser; 479566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc, &argv, NULL, help)); 48c4762a1bSJed Brown comm = PETSC_COMM_WORLD; 499566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_rank(comm, &rank)); 509566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_size(comm, &size)); 51be096a46SBarry Smith PetscCheck(size == 3, comm, PETSC_ERR_WRONG_MPI_SIZE, "You have to use three MPI processes to run this example "); 529566063dSJacob Faibussowitsch PetscCall(MatCreateMPIAIJWithArrays(comm, 2, 2, PETSC_DETERMINE, PETSC_DETERMINE, i[rank], j[rank], a[rank], &A)); 539566063dSJacob Faibussowitsch PetscCall(MatView(A, NULL)); 549566063dSJacob Faibussowitsch PetscCall(MatUpdateMPIAIJWithArrays(A, 2, 2, PETSC_DETERMINE, PETSC_DETERMINE, i[rank], j[rank], anew[rank])); 559566063dSJacob Faibussowitsch PetscCall(MatView(A, NULL)); 569566063dSJacob Faibussowitsch PetscCall(MatUpdateMPIAIJWithArrays(A, 2, 2, PETSC_DETERMINE, PETSC_DETERMINE, i[rank], j[rank], a[rank])); 579566063dSJacob Faibussowitsch PetscCall(MatView(A, NULL)); 586a3d2595SBarry Smith PetscCall(MatUpdateMPIAIJWithArray(A, anew[rank])); 596a3d2595SBarry Smith PetscCall(MatView(A, NULL)); 609566063dSJacob Faibussowitsch PetscCall(MatDestroy(&A)); 619566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 62b122ec5aSJacob Faibussowitsch return 0; 63c4762a1bSJed Brown } 64c4762a1bSJed Brown 65c4762a1bSJed Brown /*TEST 66c4762a1bSJed Brown test: 67c4762a1bSJed Brown nsize: 3 68c4762a1bSJed Brown 69c4762a1bSJed Brown TEST*/ 70