1 static char help[] = "Test MatMatMult() for AIJ and Dense matrices.\n\n"; 2 3 #include <petscmat.h> 4 5 int main(int argc,char **argv) 6 { 7 Mat A,B,C; 8 PetscInt M=10,N=5; 9 PetscErrorCode ierr; 10 PetscRandom r; 11 PetscBool equal=PETSC_FALSE; 12 PetscReal fill = 1.0; 13 PetscInt nza,am,an; 14 15 ierr = PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr; 16 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-M",&M,NULL)); 17 CHKERRQ(PetscOptionsGetInt(NULL,NULL,"-N",&N,NULL)); 18 CHKERRQ(PetscOptionsGetReal(NULL,NULL,"-fill",&fill,NULL)); 19 20 CHKERRQ(PetscRandomCreate(PETSC_COMM_WORLD,&r)); 21 CHKERRQ(PetscRandomSetFromOptions(r)); 22 23 /* create a aij matrix A */ 24 CHKERRQ(MatCreate(PETSC_COMM_WORLD,&A)); 25 CHKERRQ(MatSetSizes(A,PETSC_DECIDE,PETSC_DECIDE,N,M)); 26 CHKERRQ(MatSetType(A,MATAIJ)); 27 nza = (PetscInt)(.3*M); /* num of nozeros in each row of A */ 28 CHKERRQ(MatSeqAIJSetPreallocation(A,nza,NULL)); 29 CHKERRQ(MatMPIAIJSetPreallocation(A,nza,NULL,nza,NULL)); 30 CHKERRQ(MatSetRandom(A,r)); 31 32 /* create a dense matrix B */ 33 CHKERRQ(MatGetLocalSize(A,&am,&an)); 34 CHKERRQ(MatCreate(PETSC_COMM_WORLD,&B)); 35 CHKERRQ(MatSetSizes(B,PETSC_DECIDE,am,N,PETSC_DECIDE)); 36 CHKERRQ(MatSetType(B,MATDENSE)); 37 CHKERRQ(MatSeqDenseSetPreallocation(B,NULL)); 38 CHKERRQ(MatMPIDenseSetPreallocation(B,NULL)); 39 CHKERRQ(MatSetRandom(B,r)); 40 CHKERRQ(PetscRandomDestroy(&r)); 41 CHKERRQ(MatAssemblyBegin(B,MAT_FINAL_ASSEMBLY)); 42 CHKERRQ(MatAssemblyEnd(B,MAT_FINAL_ASSEMBLY)); 43 44 /* Test MatMatMult() */ 45 CHKERRQ(MatMatMult(B,A,MAT_INITIAL_MATRIX,fill,&C)); 46 CHKERRQ(MatMatMult(B,A,MAT_REUSE_MATRIX,fill,&C)); 47 CHKERRQ(MatMatMultEqual(B,A,C,10,&equal)); 48 PetscCheckFalse(!equal,PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE,"C != B*A"); 49 50 CHKERRQ(MatDestroy(&C)); 51 CHKERRQ(MatDestroy(&B)); 52 CHKERRQ(MatDestroy(&A)); 53 ierr = PetscFinalize(); 54 return ierr; 55 } 56 57 /*TEST 58 59 test: 60 output_file: output/ex122.out 61 62 TEST*/ 63