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 PetscErrorCode ierr; 15 PetscBool values_view=PETSC_FALSE; 16 PetscMPIInt rank; 17 18 ierr = PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr; 19 CHKERRMPI(MPI_Comm_rank(PETSC_COMM_WORLD,&rank)); 20 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-n",&n,NULL)); 21 CHKERRQ(PetscOptionsGetBool(NULL,0,"-values_view",&values_view,NULL)); 22 23 CHKERRQ(PetscRandomCreate(PETSC_COMM_SELF,&rand)); 24 CHKERRQ(PetscRandomSetFromOptions(rand)); 25 26 CHKERRQ(PetscMalloc1(n,&values)); 27 for (i=0; i<n; i++) { 28 CHKERRQ(PetscRandomGetValueReal(rand,&value)); 29 values[i] = (PetscInt)(n*value + 2.0); 30 } 31 CHKERRQ(PetscSortInt(n,values)); 32 33 CHKERRQ(PetscLogEventRegister("Sort",0,&event)); 34 CHKERRQ(PetscLogEventBegin(event,0,0,0,0)); 35 36 for (i=0; i<n; i++) { 37 CHKERRQ(PetscRandomGetValueReal(rand,&value)); 38 values[i] = (PetscInt)(n*value + 2.0); 39 } 40 CHKERRQ(PetscSortInt(n,values)); 41 CHKERRQ(PetscLogEventEnd(event,0,0,0,0)); 42 43 for (i=1; i<n; i++) { 44 PetscCheckFalse(values[i] < values[i-1],PETSC_COMM_SELF,PETSC_ERR_PLIB,"Values not sorted"); 45 if (values_view && rank == 0) CHKERRQ(PetscPrintf(PETSC_COMM_SELF,"%" PetscInt_FMT " %" PetscInt_FMT "\n",i,values[i])); 46 } 47 CHKERRQ(PetscFree(values)); 48 CHKERRQ(PetscRandomDestroy(&rand)); 49 50 ierr = PetscFinalize(); 51 return ierr; 52 } 53 54 /*TEST 55 56 test: 57 args: -values_view 58 59 TEST*/ 60