1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] = "Tests C=A^T*B via MatTranspose() and MatMatMult(). \n\ 3c4762a1bSJed Brown Contributed by Alexander Grayver, Jan. 2012 \n\n"; 4c4762a1bSJed Brown /* Example: 5c4762a1bSJed Brown mpiexec -n <np> ./ex165 -fA A.dat -fB B.dat -view_C 6c4762a1bSJed Brown */ 7c4762a1bSJed Brown 8c4762a1bSJed Brown #include <petscmat.h> 9c4762a1bSJed Brown int main(int argc,char **args) 10c4762a1bSJed Brown { 11c4762a1bSJed Brown Mat A,AT,B,C; 12c4762a1bSJed Brown PetscViewer viewer; 13c4762a1bSJed Brown PetscBool flg; 14c4762a1bSJed Brown char file[PETSC_MAX_PATH_LEN]; 15c4762a1bSJed Brown 16*b122ec5aSJacob Faibussowitsch CHKERRQ(PetscInitialize(&argc,&args,(char*)0,help)); 175f80ce2aSJacob Faibussowitsch CHKERRQ(PetscOptionsGetString(NULL,NULL,"-fA",file,sizeof(file),&flg)); 1828b400f6SJacob Faibussowitsch PetscCheck(flg,PETSC_COMM_WORLD,PETSC_ERR_USER,"Input fileA not specified"); 195f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerBinaryOpen(PETSC_COMM_WORLD,file,FILE_MODE_READ,&viewer)); 205f80ce2aSJacob Faibussowitsch CHKERRQ(MatCreate(PETSC_COMM_WORLD,&A)); 215f80ce2aSJacob Faibussowitsch CHKERRQ(MatSetType(A,MATAIJ)); 225f80ce2aSJacob Faibussowitsch CHKERRQ(MatLoad(A,viewer)); 235f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerDestroy(&viewer)); 24c4762a1bSJed Brown 255f80ce2aSJacob Faibussowitsch CHKERRQ(PetscOptionsGetString(NULL,NULL,"-fB",file,sizeof(file),&flg)); 2628b400f6SJacob Faibussowitsch PetscCheck(flg,PETSC_COMM_WORLD,PETSC_ERR_USER,"Input fileB not specified"); 275f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerBinaryOpen(PETSC_COMM_WORLD,file,FILE_MODE_READ,&viewer)); 285f80ce2aSJacob Faibussowitsch CHKERRQ(MatCreate(PETSC_COMM_WORLD,&B)); 295f80ce2aSJacob Faibussowitsch CHKERRQ(MatSetType(B,MATDENSE)); 305f80ce2aSJacob Faibussowitsch CHKERRQ(MatLoad(B,viewer)); 315f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerDestroy(&viewer)); 32c4762a1bSJed Brown 335f80ce2aSJacob Faibussowitsch CHKERRQ(MatTranspose(A,MAT_INITIAL_MATRIX,&AT)); 345f80ce2aSJacob Faibussowitsch CHKERRQ(MatMatMult(AT,B,MAT_INITIAL_MATRIX,PETSC_DEFAULT,&C)); 35c4762a1bSJed Brown 365f80ce2aSJacob Faibussowitsch CHKERRQ(PetscOptionsHasName(NULL,NULL,"-view_C",&flg)); 37c4762a1bSJed Brown if (flg) { 385f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerBinaryOpen(PETSC_COMM_WORLD,"C.dat",FILE_MODE_WRITE,&viewer)); 395f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerPushFormat(viewer,PETSC_VIEWER_NATIVE)); 405f80ce2aSJacob Faibussowitsch CHKERRQ(MatView(C,viewer)); 415f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerPopFormat(viewer)); 425f80ce2aSJacob Faibussowitsch CHKERRQ(PetscViewerDestroy(&viewer)); 43c4762a1bSJed Brown } 445f80ce2aSJacob Faibussowitsch CHKERRQ(MatDestroy(&A)); 455f80ce2aSJacob Faibussowitsch CHKERRQ(MatDestroy(&B)); 465f80ce2aSJacob Faibussowitsch CHKERRQ(MatDestroy(&AT)); 475f80ce2aSJacob Faibussowitsch CHKERRQ(MatDestroy(&C)); 48*b122ec5aSJacob Faibussowitsch CHKERRQ(PetscFinalize()); 49*b122ec5aSJacob Faibussowitsch return 0; 50c4762a1bSJed Brown } 51