1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] = "Tests application ordering.\n\n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown #include <petscsys.h> 5c4762a1bSJed Brown #include <petscao.h> 6c4762a1bSJed Brown #include <petscviewer.h> 7c4762a1bSJed Brown 8c4762a1bSJed Brown int main(int argc,char **argv) 9c4762a1bSJed Brown { 10c4762a1bSJed Brown PetscMPIInt rank,size; 11c4762a1bSJed Brown PetscInt n,*ispetsc,*isapp,start,N,i; 12c4762a1bSJed Brown AO ao; 13c4762a1bSJed Brown 14*9566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc,&argv,(char*)0,help)); 15*9566063dSJacob Faibussowitsch PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL)); 16*9566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD,&rank));n = rank + 2; 17*9566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD,&size)); 18c4762a1bSJed Brown 19c4762a1bSJed Brown /* create the orderings */ 20*9566063dSJacob Faibussowitsch PetscCall(PetscMalloc2(n,&ispetsc,n,&isapp)); 21c4762a1bSJed Brown 22*9566063dSJacob Faibussowitsch PetscCallMPI(MPI_Scan(&n,&start,1,MPIU_INT,MPI_SUM,PETSC_COMM_WORLD)); 23*9566063dSJacob Faibussowitsch PetscCallMPI(MPI_Allreduce(&n,&N,1,MPIU_INT,MPI_SUM,PETSC_COMM_WORLD)); 24c4762a1bSJed Brown start -= n; 25c4762a1bSJed Brown 26c4762a1bSJed Brown for (i=0; i<n; i++) { 27c4762a1bSJed Brown ispetsc[i] = start + i; 28c4762a1bSJed Brown isapp[i] = N - start - i - 1; 29c4762a1bSJed Brown } 30c4762a1bSJed Brown 31c4762a1bSJed Brown /* create the application ordering */ 32*9566063dSJacob Faibussowitsch PetscCall(AOCreateBasic(PETSC_COMM_WORLD,n,isapp,ispetsc,&ao)); 33*9566063dSJacob Faibussowitsch PetscCall(AOView(ao,PETSC_VIEWER_STDOUT_WORLD)); 34c4762a1bSJed Brown 35c4762a1bSJed Brown /* check the mapping */ 36*9566063dSJacob Faibussowitsch PetscCall(AOPetscToApplication(ao,n,ispetsc)); 37c4762a1bSJed Brown for (i=0; i<n; i++) { 38c4762a1bSJed Brown if (ispetsc[i] != isapp[i]) { 39*9566063dSJacob Faibussowitsch PetscCall(PetscPrintf(PETSC_COMM_WORLD,"[%d] Problem with mapping %" PetscInt_FMT " to %" PetscInt_FMT "\n",rank,i,ispetsc[i])); 40c4762a1bSJed Brown } 41c4762a1bSJed Brown } 42*9566063dSJacob Faibussowitsch PetscCall(PetscFree2(ispetsc,isapp)); 43c4762a1bSJed Brown 44*9566063dSJacob Faibussowitsch PetscCall(AODestroy(&ao)); 45*9566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 46b122ec5aSJacob Faibussowitsch return 0; 47c4762a1bSJed Brown } 48c4762a1bSJed Brown 49c4762a1bSJed Brown /*TEST 50c4762a1bSJed Brown 51c4762a1bSJed Brown test: 52c4762a1bSJed Brown 53c4762a1bSJed Brown test: 54c4762a1bSJed Brown suffix: 2 55c4762a1bSJed Brown nsize: 2 56c4762a1bSJed Brown 57c4762a1bSJed Brown test: 58c4762a1bSJed Brown suffix: 3 59c4762a1bSJed Brown nsize: 3 60c4762a1bSJed Brown 61c4762a1bSJed Brown TEST*/ 62