1 2 static char help[] = "Tests timing PetscSortInt().\n\n"; 3 4 #include <petscsys.h> 5 6 int main(int argc,char **argv) 7 { 8 PetscInt i,n = 1000,*values; 9 #if defined(PETSC_USE_LOG) 10 PetscLogEvent event; 11 #endif 12 PetscRandom rand; 13 PetscReal value; 14 PetscBool values_view=PETSC_FALSE; 15 PetscMPIInt rank; 16 17 PetscCall(PetscInitialize(&argc,&argv,(char*)0,help)); 18 PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD,&rank)); 19 PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL)); 20 PetscCall(PetscOptionsGetBool(NULL,0,"-values_view",&values_view,NULL)); 21 22 PetscCall(PetscRandomCreate(PETSC_COMM_SELF,&rand)); 23 PetscCall(PetscRandomSetFromOptions(rand)); 24 25 PetscCall(PetscMalloc1(n,&values)); 26 for (i=0; i<n; i++) { 27 PetscCall(PetscRandomGetValueReal(rand,&value)); 28 values[i] = (PetscInt)(n*value + 2.0); 29 } 30 PetscCall(PetscSortInt(n,values)); 31 32 PetscCall(PetscLogEventRegister("Sort",0,&event)); 33 PetscCall(PetscLogEventBegin(event,0,0,0,0)); 34 35 for (i=0; i<n; i++) { 36 PetscCall(PetscRandomGetValueReal(rand,&value)); 37 values[i] = (PetscInt)(n*value + 2.0); 38 } 39 PetscCall(PetscSortInt(n,values)); 40 PetscCall(PetscLogEventEnd(event,0,0,0,0)); 41 42 for (i=1; i<n; i++) { 43 PetscCheck(values[i] >= values[i-1],PETSC_COMM_SELF,PETSC_ERR_PLIB,"Values not sorted"); 44 if (values_view && rank == 0) PetscCall(PetscPrintf(PETSC_COMM_SELF,"%" PetscInt_FMT " %" PetscInt_FMT "\n",i,values[i])); 45 } 46 PetscCall(PetscFree(values)); 47 PetscCall(PetscRandomDestroy(&rand)); 48 49 PetscCall(PetscFinalize()); 50 return 0; 51 } 52 53 /*TEST 54 55 test: 56 args: -values_view 57 58 TEST*/ 59