1c4762a1bSJed Brown static char help[] = "Test MatCreateRedundantMatrix for rectangular matrix.\n\ 2c4762a1bSJed Brown Contributed by Jose E. Roman, July 2017\n\n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown #include <petscmat.h> 5c4762a1bSJed Brown int main(int argc,char **args) 6c4762a1bSJed Brown { 7c4762a1bSJed Brown Mat A,B; 8c4762a1bSJed Brown PetscInt m=3,n=4,i,nsubcomm; 9c4762a1bSJed Brown PetscMPIInt size,rank; 10c4762a1bSJed Brown 11*327415f7SBarry Smith PetscFunctionBeginUser; 129566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc,&args,(char*)0,help)); 139566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD, &size)); 149566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank)); 15c4762a1bSJed Brown 16c4762a1bSJed Brown nsubcomm = size; 179566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL,NULL,"-nsubcomm",&nsubcomm,NULL)); 18c4762a1bSJed Brown 199566063dSJacob Faibussowitsch PetscCall(MatCreate(PETSC_COMM_WORLD, &A)); 209566063dSJacob Faibussowitsch PetscCall(MatSetSizes(A, m, n, PETSC_DETERMINE, PETSC_DETERMINE)); 219566063dSJacob Faibussowitsch PetscCall(MatSetType(A, MATAIJ)); 229566063dSJacob Faibussowitsch PetscCall(MatSetFromOptions(A)); 239566063dSJacob Faibussowitsch PetscCall(MatSetUp(A)); 24c4762a1bSJed Brown 25dd400576SPatrick Sanan if (rank == 0) { 26c4762a1bSJed Brown for (i=0;i<size*PetscMin(m,n);i++) { 279566063dSJacob Faibussowitsch PetscCall(MatSetValue(A, i, i, 1.0, INSERT_VALUES)); 28c4762a1bSJed Brown } 29c4762a1bSJed Brown } 309566063dSJacob Faibussowitsch PetscCall(MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY)); 319566063dSJacob Faibussowitsch PetscCall(MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY)); 329566063dSJacob Faibussowitsch PetscCall(MatView(A,PETSC_VIEWER_STDOUT_WORLD)); 33c4762a1bSJed Brown 349566063dSJacob Faibussowitsch PetscCall(MatCreateRedundantMatrix(A, nsubcomm, MPI_COMM_NULL, MAT_INITIAL_MATRIX, &B)); 35c4762a1bSJed Brown if (nsubcomm==size) { /* B is a sequential matrix */ 36dd400576SPatrick Sanan if (rank == 0) { 379566063dSJacob Faibussowitsch PetscCall(MatView(B,PETSC_VIEWER_STDOUT_SELF)); 38c4762a1bSJed Brown } 39c4762a1bSJed Brown } else { 40c4762a1bSJed Brown MPI_Comm comm; 419566063dSJacob Faibussowitsch PetscCall(PetscObjectGetComm((PetscObject)B,&comm)); 429566063dSJacob Faibussowitsch PetscCall(MatView(B,PETSC_VIEWER_STDOUT_(comm))); 43c4762a1bSJed Brown } 44c4762a1bSJed Brown 459566063dSJacob Faibussowitsch PetscCall(MatDestroy(&A)); 469566063dSJacob Faibussowitsch PetscCall(MatDestroy(&B)); 479566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 48b122ec5aSJacob Faibussowitsch return 0; 49c4762a1bSJed Brown } 50c4762a1bSJed Brown 51c4762a1bSJed Brown /*TEST 52c4762a1bSJed Brown 53c4762a1bSJed Brown test: 54c4762a1bSJed Brown 55c4762a1bSJed Brown test: 56c4762a1bSJed Brown suffix: 2 57c4762a1bSJed Brown nsize: 3 58c4762a1bSJed Brown 59c4762a1bSJed Brown test: 60c4762a1bSJed Brown suffix: baij 61c4762a1bSJed Brown args: -mat_type baij 62c4762a1bSJed Brown 63c4762a1bSJed Brown test: 64c4762a1bSJed Brown suffix: baij_2 65c4762a1bSJed Brown nsize: 3 66c4762a1bSJed Brown args: -mat_type baij 67c4762a1bSJed Brown 68c4762a1bSJed Brown test: 69c4762a1bSJed Brown suffix: dense 70c4762a1bSJed Brown args: -mat_type dense 71c4762a1bSJed Brown 72c4762a1bSJed Brown test: 73c4762a1bSJed Brown suffix: dense_2 74c4762a1bSJed Brown nsize: 3 75c4762a1bSJed Brown args: -mat_type dense 76c4762a1bSJed Brown 77c4762a1bSJed Brown TEST*/ 78