1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] = "Tests sequential and parallel MatMatMult() and MatAXPY(...,SUBSET_NONZERO_PATTERN) \n\ 3c4762a1bSJed Brown Input arguments are:\n\ 4c4762a1bSJed Brown -f <input_file> : file to load\n\n"; 5c4762a1bSJed Brown /* e.g., mpiexec -n 3 ./ex113 -f <file> */ 6c4762a1bSJed Brown 7c4762a1bSJed Brown #include <petscmat.h> 8c4762a1bSJed Brown 9c4762a1bSJed Brown int main(int argc,char **args) 10c4762a1bSJed Brown { 11c4762a1bSJed Brown Mat A,A1,A2,Mtmp,dstMat; 12c4762a1bSJed Brown PetscViewer viewer; 13c4762a1bSJed Brown PetscErrorCode ierr; 14c4762a1bSJed Brown PetscReal fill=4.0; 15c4762a1bSJed Brown char file[128]; 16c4762a1bSJed Brown PetscBool flg; 17c4762a1bSJed Brown 18c4762a1bSJed Brown ierr = PetscInitialize(&argc,&args,(char*)0,help);if (ierr) return ierr; 19c4762a1bSJed Brown /* Load the matrix A */ 20589a23caSBarry Smith ierr = PetscOptionsGetString(NULL,NULL,"-f",file,sizeof(file),&flg);CHKERRQ(ierr); 21*2c71b3e2SJacob Faibussowitsch PetscCheckFalse(!flg,PETSC_COMM_WORLD,PETSC_ERR_USER,"Must indicate a file name for matrix A with the -f option."); 22c4762a1bSJed Brown 23c4762a1bSJed Brown ierr = PetscViewerBinaryOpen(PETSC_COMM_WORLD,file,FILE_MODE_READ,&viewer);CHKERRQ(ierr); 24c4762a1bSJed Brown ierr = MatCreate(PETSC_COMM_WORLD,&A);CHKERRQ(ierr); 25c4762a1bSJed Brown ierr = MatLoad(A,viewer);CHKERRQ(ierr); 26c4762a1bSJed Brown ierr = PetscViewerDestroy(&viewer);CHKERRQ(ierr); 27c4762a1bSJed Brown 28c4762a1bSJed Brown ierr = MatDuplicate(A,MAT_COPY_VALUES,&A1);CHKERRQ(ierr); 29c4762a1bSJed Brown ierr = MatDuplicate(A,MAT_COPY_VALUES,&A2);CHKERRQ(ierr); 30c4762a1bSJed Brown 31c4762a1bSJed Brown /* dstMat = A*A1*A2 */ 32c4762a1bSJed Brown ierr = MatMatMult(A1,A2,MAT_INITIAL_MATRIX,fill,&Mtmp);CHKERRQ(ierr); 33c4762a1bSJed Brown ierr = MatMatMult(A,Mtmp,MAT_INITIAL_MATRIX,fill,&dstMat);CHKERRQ(ierr); 34c4762a1bSJed Brown ierr = MatDestroy(&Mtmp);CHKERRQ(ierr); 35c4762a1bSJed Brown 36c4762a1bSJed Brown /* dstMat += A1*A2 */ 37c4762a1bSJed Brown ierr = MatMatMult(A1,A2,MAT_INITIAL_MATRIX,fill,&Mtmp);CHKERRQ(ierr); 38c4762a1bSJed Brown ierr = MatAXPY(dstMat,1.0,Mtmp,SUBSET_NONZERO_PATTERN);CHKERRQ(ierr); 39c4762a1bSJed Brown ierr = MatDestroy(&Mtmp);CHKERRQ(ierr); 40c4762a1bSJed Brown 41c4762a1bSJed Brown /* dstMat += A*A1 */ 42c4762a1bSJed Brown ierr = MatMatMult(A,A1,MAT_INITIAL_MATRIX,fill,&Mtmp);CHKERRQ(ierr); 43c4762a1bSJed Brown ierr = MatAXPY(dstMat, 1.0, Mtmp,SUBSET_NONZERO_PATTERN);CHKERRQ(ierr); 44c4762a1bSJed Brown ierr = MatDestroy(&Mtmp);CHKERRQ(ierr); 45c4762a1bSJed Brown 46c4762a1bSJed Brown /* dstMat += A */ 47c4762a1bSJed Brown ierr = MatAXPY(dstMat, 1.0, A,SUBSET_NONZERO_PATTERN);CHKERRQ(ierr); 48c4762a1bSJed Brown 49c4762a1bSJed Brown ierr = MatDestroy(&A);CHKERRQ(ierr); 50c4762a1bSJed Brown ierr = MatDestroy(&A1);CHKERRQ(ierr); 51c4762a1bSJed Brown ierr = MatDestroy(&A2);CHKERRQ(ierr); 52c4762a1bSJed Brown ierr = MatDestroy(&dstMat);CHKERRQ(ierr); 53c4762a1bSJed Brown ierr = PetscFinalize(); 54c4762a1bSJed Brown return ierr; 55c4762a1bSJed Brown } 56c4762a1bSJed Brown 57