1c4762a1bSJed Brown static char help[] = "Tests MAIJ matrix for large DOF\n\n"; 2c4762a1bSJed Brown 3c4762a1bSJed Brown #include <petscdm.h> 4c4762a1bSJed Brown #include <petscdmda.h> 5c4762a1bSJed Brown 6c4762a1bSJed Brown int main(int argc,char *argv[]) 7c4762a1bSJed Brown { 8c4762a1bSJed Brown Mat M; 9c4762a1bSJed Brown Vec x,y; 10c4762a1bSJed Brown DM da,daf; 11c4762a1bSJed Brown 12*9566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc,&argv,0,help)); 13*9566063dSJacob Faibussowitsch PetscCall(DMDACreate2d(PETSC_COMM_WORLD, DM_BOUNDARY_NONE, DM_BOUNDARY_NONE,DMDA_STENCIL_STAR,4,5,PETSC_DECIDE,PETSC_DECIDE,41,1,0,0,&da)); 14*9566063dSJacob Faibussowitsch PetscCall(DMSetFromOptions(da)); 15*9566063dSJacob Faibussowitsch PetscCall(DMSetUp(da)); 16*9566063dSJacob Faibussowitsch PetscCall(DMRefine(da,PETSC_COMM_WORLD,&daf)); 17*9566063dSJacob Faibussowitsch PetscCall(DMCreateInterpolation(da,daf,&M,NULL)); 18*9566063dSJacob Faibussowitsch PetscCall(DMCreateGlobalVector(da,&x)); 19*9566063dSJacob Faibussowitsch PetscCall(DMCreateGlobalVector(daf,&y)); 20c4762a1bSJed Brown 21*9566063dSJacob Faibussowitsch PetscCall(MatMult(M,x,y)); 22*9566063dSJacob Faibussowitsch PetscCall(MatMultTranspose(M,y,x)); 23*9566063dSJacob Faibussowitsch PetscCall(DMDestroy(&da)); 24*9566063dSJacob Faibussowitsch PetscCall(DMDestroy(&daf)); 25*9566063dSJacob Faibussowitsch PetscCall(VecDestroy(&x)); 26*9566063dSJacob Faibussowitsch PetscCall(VecDestroy(&y)); 27*9566063dSJacob Faibussowitsch PetscCall(MatDestroy(&M)); 28*9566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 29b122ec5aSJacob Faibussowitsch return 0; 30c4762a1bSJed Brown } 31c4762a1bSJed Brown 32c4762a1bSJed Brown /*TEST 33c4762a1bSJed Brown 34c4762a1bSJed Brown test: 35c4762a1bSJed Brown nsize: 2 36c4762a1bSJed Brown 37c4762a1bSJed Brown TEST*/ 38