1*c4762a1bSJed Brown static char help[] = "Tests MAIJ matrix for large DOF\n\n"; 2*c4762a1bSJed Brown 3*c4762a1bSJed Brown #include <petscdm.h> 4*c4762a1bSJed Brown #include <petscdmda.h> 5*c4762a1bSJed Brown 6*c4762a1bSJed Brown int main(int argc,char *argv[]) 7*c4762a1bSJed Brown { 8*c4762a1bSJed Brown Mat M; 9*c4762a1bSJed Brown Vec x,y; 10*c4762a1bSJed Brown PetscErrorCode ierr; 11*c4762a1bSJed Brown DM da,daf; 12*c4762a1bSJed Brown 13*c4762a1bSJed Brown ierr = PetscInitialize(&argc,&argv,0,help);if (ierr) return ierr; 14*c4762a1bSJed Brown ierr = DMDACreate2d(PETSC_COMM_WORLD, DM_BOUNDARY_NONE, DM_BOUNDARY_NONE,DMDA_STENCIL_STAR,4,5,PETSC_DECIDE,PETSC_DECIDE,41,1,0,0,&da);CHKERRQ(ierr); 15*c4762a1bSJed Brown ierr = DMSetFromOptions(da);CHKERRQ(ierr); 16*c4762a1bSJed Brown ierr = DMSetUp(da);CHKERRQ(ierr); 17*c4762a1bSJed Brown ierr = DMRefine(da,PETSC_COMM_WORLD,&daf);CHKERRQ(ierr); 18*c4762a1bSJed Brown ierr = DMCreateInterpolation(da,daf,&M,NULL);CHKERRQ(ierr); 19*c4762a1bSJed Brown ierr = DMCreateGlobalVector(da,&x);CHKERRQ(ierr); 20*c4762a1bSJed Brown ierr = DMCreateGlobalVector(daf,&y);CHKERRQ(ierr); 21*c4762a1bSJed Brown 22*c4762a1bSJed Brown ierr = MatMult(M,x,y);CHKERRQ(ierr); 23*c4762a1bSJed Brown ierr = MatMultTranspose(M,y,x);CHKERRQ(ierr); 24*c4762a1bSJed Brown ierr = DMDestroy(&da);CHKERRQ(ierr); 25*c4762a1bSJed Brown ierr = DMDestroy(&daf);CHKERRQ(ierr); 26*c4762a1bSJed Brown ierr = VecDestroy(&x);CHKERRQ(ierr); 27*c4762a1bSJed Brown ierr = VecDestroy(&y);CHKERRQ(ierr); 28*c4762a1bSJed Brown ierr = MatDestroy(&M);CHKERRQ(ierr); 29*c4762a1bSJed Brown ierr = PetscFinalize(); 30*c4762a1bSJed Brown return ierr; 31*c4762a1bSJed Brown } 32*c4762a1bSJed Brown 33*c4762a1bSJed Brown 34*c4762a1bSJed Brown /*TEST 35*c4762a1bSJed Brown 36*c4762a1bSJed Brown test: 37*c4762a1bSJed Brown nsize: 2 38*c4762a1bSJed Brown 39*c4762a1bSJed Brown TEST*/ 40