1c4762a1bSJed Brown static char help[] = "Tests application ordering.\n\n"; 2c4762a1bSJed Brown 3c4762a1bSJed Brown #include <petscsys.h> 4c4762a1bSJed Brown #include <petscao.h> 5c4762a1bSJed Brown #include <petscviewer.h> 6c4762a1bSJed Brown 7d71ae5a4SJacob Faibussowitsch int main(int argc, char **argv) 8d71ae5a4SJacob Faibussowitsch { 9c4762a1bSJed Brown PetscMPIInt rank, size; 10c4762a1bSJed Brown PetscInt n, *ispetsc, *isapp, start, N, i; 11c4762a1bSJed Brown AO ao; 12c4762a1bSJed Brown 13327415f7SBarry Smith PetscFunctionBeginUser; 14*c8025a54SPierre Jolivet PetscCall(PetscInitialize(&argc, &argv, NULL, help)); 159566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL, NULL, "-n", &n, NULL)); 169371c9d4SSatish Balay PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank)); 179371c9d4SSatish Balay n = rank + 2; 189566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD, &size)); 19c4762a1bSJed Brown 20c4762a1bSJed Brown /* create the orderings */ 219566063dSJacob Faibussowitsch PetscCall(PetscMalloc2(n, &ispetsc, n, &isapp)); 22c4762a1bSJed Brown 239566063dSJacob Faibussowitsch PetscCallMPI(MPI_Scan(&n, &start, 1, MPIU_INT, MPI_SUM, PETSC_COMM_WORLD)); 24462c564dSBarry Smith PetscCallMPI(MPIU_Allreduce(&n, &N, 1, MPIU_INT, MPI_SUM, PETSC_COMM_WORLD)); 25c4762a1bSJed Brown start -= n; 26c4762a1bSJed Brown 27c4762a1bSJed Brown for (i = 0; i < n; i++) { 28c4762a1bSJed Brown ispetsc[i] = start + i; 29c4762a1bSJed Brown isapp[i] = N - start - i - 1; 30c4762a1bSJed Brown } 31c4762a1bSJed Brown 32c4762a1bSJed Brown /* create the application ordering */ 339566063dSJacob Faibussowitsch PetscCall(AOCreateBasic(PETSC_COMM_WORLD, n, isapp, ispetsc, &ao)); 349566063dSJacob Faibussowitsch PetscCall(AOView(ao, PETSC_VIEWER_STDOUT_WORLD)); 35c4762a1bSJed Brown 36c4762a1bSJed Brown /* check the mapping */ 379566063dSJacob Faibussowitsch PetscCall(AOPetscToApplication(ao, n, ispetsc)); 38c4762a1bSJed Brown for (i = 0; i < n; i++) { 3948a46eb9SPierre Jolivet if (ispetsc[i] != isapp[i]) PetscCall(PetscPrintf(PETSC_COMM_WORLD, "[%d] Problem with mapping %" PetscInt_FMT " to %" PetscInt_FMT "\n", rank, i, ispetsc[i])); 40c4762a1bSJed Brown } 419566063dSJacob Faibussowitsch PetscCall(PetscFree2(ispetsc, isapp)); 42c4762a1bSJed Brown 439566063dSJacob Faibussowitsch PetscCall(AODestroy(&ao)); 449566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 45b122ec5aSJacob Faibussowitsch return 0; 46c4762a1bSJed Brown } 47c4762a1bSJed Brown 48c4762a1bSJed Brown /*TEST 49c4762a1bSJed Brown 50c4762a1bSJed Brown test: 51c4762a1bSJed Brown 52c4762a1bSJed Brown test: 53c4762a1bSJed Brown suffix: 2 54c4762a1bSJed Brown nsize: 2 55c4762a1bSJed Brown 56c4762a1bSJed Brown test: 57c4762a1bSJed Brown suffix: 3 58c4762a1bSJed Brown nsize: 3 59c4762a1bSJed Brown 60c4762a1bSJed Brown TEST*/ 61