1*c4762a1bSJed Brown static char help[] = "Test MatTransposeMatMult() \n\n"; 2*c4762a1bSJed Brown 3*c4762a1bSJed Brown /* Example: 4*c4762a1bSJed Brown mpiexec -n 8 ./ex209 -f <inputfile> (e.g., inputfile=ceres_solver_iteration_001_A.petsc) 5*c4762a1bSJed Brown */ 6*c4762a1bSJed Brown 7*c4762a1bSJed Brown #include <petscmat.h> 8*c4762a1bSJed Brown 9*c4762a1bSJed Brown int main(int argc,char **args) 10*c4762a1bSJed Brown { 11*c4762a1bSJed Brown Mat A,C,AtA,B; 12*c4762a1bSJed Brown PetscViewer fd; 13*c4762a1bSJed Brown char file[PETSC_MAX_PATH_LEN]; 14*c4762a1bSJed Brown PetscErrorCode ierr; 15*c4762a1bSJed Brown PetscReal fill = 4.0; 16*c4762a1bSJed Brown PetscMPIInt rank,size; 17*c4762a1bSJed Brown PetscBool equal; 18*c4762a1bSJed Brown PetscInt i,m,n,rstart,rend; 19*c4762a1bSJed Brown PetscScalar one=1.0; 20*c4762a1bSJed Brown 21*c4762a1bSJed Brown ierr = PetscInitialize(&argc,&args,(char*)0,help);if (ierr) return ierr; 22*c4762a1bSJed Brown ierr = MPI_Comm_rank(PETSC_COMM_WORLD,&rank);CHKERRQ(ierr); 23*c4762a1bSJed Brown ierr = MPI_Comm_size(PETSC_COMM_WORLD,&size);CHKERRQ(ierr); 24*c4762a1bSJed Brown ierr = PetscOptionsGetString(NULL,NULL,"-f",file,PETSC_MAX_PATH_LEN,NULL);CHKERRQ(ierr); 25*c4762a1bSJed Brown 26*c4762a1bSJed Brown /* Load matrix A */ 27*c4762a1bSJed Brown ierr = PetscViewerBinaryOpen(PETSC_COMM_WORLD,file,FILE_MODE_READ,&fd);CHKERRQ(ierr); 28*c4762a1bSJed Brown ierr = MatCreate(PETSC_COMM_WORLD,&A);CHKERRQ(ierr); 29*c4762a1bSJed Brown ierr = MatSetType(A,MATAIJ);CHKERRQ(ierr); 30*c4762a1bSJed Brown ierr = MatLoad(A,fd);CHKERRQ(ierr); 31*c4762a1bSJed Brown ierr = PetscViewerDestroy(&fd);CHKERRQ(ierr); 32*c4762a1bSJed Brown 33*c4762a1bSJed Brown /* Create identity matrix B */ 34*c4762a1bSJed Brown ierr = MatGetLocalSize(A,&m,&n);CHKERRQ(ierr); 35*c4762a1bSJed Brown ierr = MatCreate(PETSC_COMM_WORLD,&B);CHKERRQ(ierr); 36*c4762a1bSJed Brown ierr = MatSetSizes(B,m,m,PETSC_DECIDE,PETSC_DECIDE);CHKERRQ(ierr); 37*c4762a1bSJed Brown ierr = MatSetType(B,MATAIJ);CHKERRQ(ierr); 38*c4762a1bSJed Brown ierr = MatSetFromOptions(B);CHKERRQ(ierr); 39*c4762a1bSJed Brown ierr = MatSetUp(B);CHKERRQ(ierr); 40*c4762a1bSJed Brown 41*c4762a1bSJed Brown ierr = MatGetOwnershipRange(B,&rstart,&rend);CHKERRQ(ierr); 42*c4762a1bSJed Brown for (i=rstart; i<rend; i++) { 43*c4762a1bSJed Brown ierr = MatSetValues(B,1,&i,1,&i,&one,INSERT_VALUES);CHKERRQ(ierr); 44*c4762a1bSJed Brown } 45*c4762a1bSJed Brown ierr = MatAssemblyBegin(B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 46*c4762a1bSJed Brown ierr = MatAssemblyEnd(B,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 47*c4762a1bSJed Brown 48*c4762a1bSJed Brown /* Compute AtA = A^T*B*A, B = identity matrix */ 49*c4762a1bSJed Brown ierr = MatPtAP(B,A,MAT_INITIAL_MATRIX,fill,&AtA);CHKERRQ(ierr); 50*c4762a1bSJed Brown ierr = MatPtAP(B,A,MAT_REUSE_MATRIX,fill,&AtA);CHKERRQ(ierr); 51*c4762a1bSJed Brown if (!rank) printf("C = A^T*B*A is done...\n"); 52*c4762a1bSJed Brown ierr = MatDestroy(&B);CHKERRQ(ierr); 53*c4762a1bSJed Brown 54*c4762a1bSJed Brown /* Compute C = A^T*A */ 55*c4762a1bSJed Brown ierr = MatTransposeMatMult(A,A,MAT_INITIAL_MATRIX,fill,&C);CHKERRQ(ierr); 56*c4762a1bSJed Brown if (!rank) printf("C = A^T*A is done...\n"); 57*c4762a1bSJed Brown ierr = MatTransposeMatMult(A,A,MAT_REUSE_MATRIX,fill,&C);CHKERRQ(ierr); 58*c4762a1bSJed Brown if (!rank) printf("REUSE C = A^T*A is done...\n"); 59*c4762a1bSJed Brown 60*c4762a1bSJed Brown /* Compare C and AtA */ 61*c4762a1bSJed Brown ierr = MatMultEqual(C,AtA,20,&equal);CHKERRQ(ierr); 62*c4762a1bSJed Brown if (!equal) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE,"A^T*A != At*A"); 63*c4762a1bSJed Brown ierr = MatDestroy(&AtA);CHKERRQ(ierr); 64*c4762a1bSJed Brown 65*c4762a1bSJed Brown ierr = MatDestroy(&C);CHKERRQ(ierr); 66*c4762a1bSJed Brown ierr = MatDestroy(&A);CHKERRQ(ierr); 67*c4762a1bSJed Brown ierr = PetscFinalize(); 68*c4762a1bSJed Brown return ierr; 69*c4762a1bSJed Brown } 70*c4762a1bSJed Brown 71*c4762a1bSJed Brown 72*c4762a1bSJed Brown /*TEST 73*c4762a1bSJed Brown 74*c4762a1bSJed Brown test: 75*c4762a1bSJed Brown requires: datafilespath !complex double !define(PETSC_USE_64BIT_INDICES) 76*c4762a1bSJed Brown args: -f ${DATAFILESPATH}/matrices/arco1 77*c4762a1bSJed Brown 78*c4762a1bSJed Brown test: 79*c4762a1bSJed Brown suffix: 2 80*c4762a1bSJed Brown nsize: 4 81*c4762a1bSJed Brown requires: datafilespath !complex double !define(PETSC_USE_64BIT_INDICES) 82*c4762a1bSJed Brown args: -f ${DATAFILESPATH}/matrices/arco1 -matptap_via nonscalable 83*c4762a1bSJed Brown 84*c4762a1bSJed Brown TEST*/ 85