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 PetscFunctionBeginUser; 18 PetscCall(PetscInitialize(&argc,&argv,(char*)0,help)); 19 PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD,&rank)); 20 PetscCall(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL)); 21 PetscCall(PetscOptionsGetBool(NULL,0,"-values_view",&values_view,NULL)); 22 23 PetscCall(PetscRandomCreate(PETSC_COMM_SELF,&rand)); 24 PetscCall(PetscRandomSetFromOptions(rand)); 25 26 PetscCall(PetscMalloc1(n,&values)); 27 for (i=0; i<n; i++) { 28 PetscCall(PetscRandomGetValueReal(rand,&value)); 29 values[i] = (PetscInt)(n*value + 2.0); 30 } 31 PetscCall(PetscSortInt(n,values)); 32 33 PetscCall(PetscLogEventRegister("Sort",0,&event)); 34 PetscCall(PetscLogEventBegin(event,0,0,0,0)); 35 36 for (i=0; i<n; i++) { 37 PetscCall(PetscRandomGetValueReal(rand,&value)); 38 values[i] = (PetscInt)(n*value + 2.0); 39 } 40 PetscCall(PetscSortInt(n,values)); 41 PetscCall(PetscLogEventEnd(event,0,0,0,0)); 42 43 for (i=1; i<n; i++) { 44 PetscCheck(values[i] >= values[i-1],PETSC_COMM_SELF,PETSC_ERR_PLIB,"Values not sorted"); 45 if (values_view && rank == 0) PetscCall(PetscPrintf(PETSC_COMM_SELF,"%" PetscInt_FMT " %" PetscInt_FMT "\n",i,values[i])); 46 } 47 PetscCall(PetscFree(values)); 48 PetscCall(PetscRandomDestroy(&rand)); 49 50 PetscCall(PetscFinalize()); 51 return 0; 52 } 53 54 /*TEST 55 56 test: 57 args: -values_view 58 59 TEST*/ 60