38 …PetscInt           gp        = 2;                   /* grid point along sliceaxis to pick the slic…  in main()  local
64 …"-gp", "index along sliceaxis at which 2D slice is extracted", "ex22.c", gp, &gp, NULL, 0, PETSC_I…  in main()
69 …PetscCheck(gp <= Mx, PETSC_COMM_WORLD, PETSC_ERR_USER_INPUT, "grid point along sliceaxis is larger…  in main()
71 …PetscCheck(gp <= My, PETSC_COMM_WORLD, PETSC_ERR_USER_INPUT, "grid point along sliceaxis is larger…  in main()
73 …PetscCheck(gp <= Mz, PETSC_COMM_WORLD, PETSC_ERR_USER_INPUT, "grid point along sliceaxis is larger…  in main()
105     lower.i = gp;  in main()
108     upper.i = gp;  in main()
113     lower.j = gp;  in main()
116     upper.j = gp;  in main()
121     lower.k = gp;  in main()
124     upper.k = gp;  in main()
151     PetscCall(DMDAGetProcessorSubset(da3D, DM_X, gp, &subset_mpi_comm));  in main()
157     PetscCall(DMDAGetProcessorSubset(da3D, DM_Y, gp, &subset_mpi_comm));  in main()
163     PetscCall(DMDAGetProcessorSubset(da3D, DM_Z, gp, &subset_mpi_comm));  in main()