1*c4762a1bSJed Brown 2*c4762a1bSJed Brown static char help[] = "Test MatCreate() with MAT_STRUCTURE_ONLY .\n\n"; 3*c4762a1bSJed Brown 4*c4762a1bSJed Brown #include <petscmat.h> 5*c4762a1bSJed Brown 6*c4762a1bSJed Brown int main(int argc,char **argv) 7*c4762a1bSJed Brown { 8*c4762a1bSJed Brown Mat mat; 9*c4762a1bSJed Brown PetscInt m = 7,n,i,j,rstart,rend; 10*c4762a1bSJed Brown PetscErrorCode ierr; 11*c4762a1bSJed Brown PetscMPIInt size; 12*c4762a1bSJed Brown PetscScalar v; 13*c4762a1bSJed Brown PetscBool struct_only=PETSC_TRUE; 14*c4762a1bSJed Brown 15*c4762a1bSJed Brown ierr = PetscInitialize(&argc,&argv,(char*)0,help);if (ierr) return ierr; 16*c4762a1bSJed Brown ierr = MPI_Comm_size(PETSC_COMM_WORLD,&size);CHKERRQ(ierr); 17*c4762a1bSJed Brown if (size != 1) SETERRQ(PETSC_COMM_WORLD,PETSC_ERR_SUP,"This is a uniprocessor example only!"); 18*c4762a1bSJed Brown 19*c4762a1bSJed Brown ierr = PetscViewerPushFormat(PETSC_VIEWER_STDOUT_WORLD,PETSC_VIEWER_ASCII_COMMON);CHKERRQ(ierr); 20*c4762a1bSJed Brown ierr = PetscOptionsGetInt(NULL,NULL,"-m",&m,NULL);CHKERRQ(ierr); 21*c4762a1bSJed Brown ierr = PetscOptionsGetBool(NULL,NULL,"-struct_only",&struct_only,NULL);CHKERRQ(ierr); 22*c4762a1bSJed Brown n = m; 23*c4762a1bSJed Brown 24*c4762a1bSJed Brown /* ------- Assemble matrix, test MatValid() --------- */ 25*c4762a1bSJed Brown ierr = MatCreate(PETSC_COMM_WORLD,&mat);CHKERRQ(ierr); 26*c4762a1bSJed Brown ierr = MatSetSizes(mat,PETSC_DECIDE,PETSC_DECIDE,m,n);CHKERRQ(ierr); 27*c4762a1bSJed Brown ierr = MatSetFromOptions(mat);CHKERRQ(ierr); 28*c4762a1bSJed Brown if (struct_only) { 29*c4762a1bSJed Brown ierr = MatSetOption(mat,MAT_STRUCTURE_ONLY,PETSC_TRUE);CHKERRQ(ierr); 30*c4762a1bSJed Brown } 31*c4762a1bSJed Brown ierr = MatSetUp(mat);CHKERRQ(ierr); 32*c4762a1bSJed Brown ierr = MatGetOwnershipRange(mat,&rstart,&rend);CHKERRQ(ierr); 33*c4762a1bSJed Brown for (i=rstart; i<rend; i++) { 34*c4762a1bSJed Brown for (j=0; j<n; j++) { 35*c4762a1bSJed Brown v = 10.0*i+j; 36*c4762a1bSJed Brown ierr = MatSetValues(mat,1,&i,1,&j,&v,INSERT_VALUES);CHKERRQ(ierr); 37*c4762a1bSJed Brown } 38*c4762a1bSJed Brown } 39*c4762a1bSJed Brown ierr = MatAssemblyBegin(mat,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 40*c4762a1bSJed Brown ierr = MatAssemblyEnd(mat,MAT_FINAL_ASSEMBLY);CHKERRQ(ierr); 41*c4762a1bSJed Brown ierr = MatView(mat,PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr); 42*c4762a1bSJed Brown 43*c4762a1bSJed Brown /* Free data structures */ 44*c4762a1bSJed Brown ierr = MatDestroy(&mat);CHKERRQ(ierr); 45*c4762a1bSJed Brown ierr = PetscFinalize(); 46*c4762a1bSJed Brown return ierr; 47*c4762a1bSJed Brown } 48*c4762a1bSJed Brown 49*c4762a1bSJed Brown /*TEST 50*c4762a1bSJed Brown 51*c4762a1bSJed Brown test: 52*c4762a1bSJed Brown output_file: output/ex107.out 53*c4762a1bSJed Brown 54*c4762a1bSJed Brown test: 55*c4762a1bSJed Brown suffix: 2 56*c4762a1bSJed Brown args: -mat_type baij -mat_block_size 2 -m 10 57*c4762a1bSJed Brown 58*c4762a1bSJed Brown TEST*/ 59