xref: /petsc/src/dm/tests/ex20.c (revision 732aec7a18f2199fb53bb9a2f3aef439a834ce31)

static char help[] = "Tests DMDACreate3d() memory usage\n\n";

#include <petscdmda.h>

int main(int argc, char **argv)
{
  DM       dm;
  Vec      X, Y;
  PetscInt dof = 10;

  PetscFunctionBeginUser;
  PetscCall(PetscInitialize(&argc, &argv, NULL, help));
  PetscCall(PetscOptionsGetInt(NULL, NULL, "-dof", &dof, NULL));
  PetscCall(DMDACreate3d(PETSC_COMM_WORLD, DM_BOUNDARY_NONE, DM_BOUNDARY_NONE, DM_BOUNDARY_NONE, DMDA_STENCIL_STAR, -128, -128, -128, PETSC_DECIDE, PETSC_DECIDE, PETSC_DECIDE, dof, 1, NULL, NULL, NULL, &dm));
  PetscCall(DMSetFromOptions(dm));
  PetscCall(DMSetUp(dm));
  PetscCall(PetscMemoryTrace("DMDACreate3d        "));

  PetscCall(DMCreateGlobalVector(dm, &X));
  PetscCall(PetscMemoryTrace("DMCreateGlobalVector"));
  PetscCall(DMCreateGlobalVector(dm, &Y));
  PetscCall(PetscMemoryTrace("DMCreateGlobalVector"));

  PetscCall(VecDestroy(&X));
  PetscCall(VecDestroy(&Y));
  PetscCall(DMDestroy(&dm));
  PetscCall(PetscFinalize());
  return 0;
}