11e25c274SJed Brown #if !defined(_PETSCDMTYPES_H) 21e25c274SJed Brown #define _PETSCDMTYPES_H 31e25c274SJed Brown 41e25c274SJed Brown /*S 51e25c274SJed Brown DM - Abstract PETSc object that manages an abstract grid object and its interactions with the algebraic solvers 61e25c274SJed Brown 71e25c274SJed Brown Level: intermediate 81e25c274SJed Brown 91e25c274SJed Brown Concepts: grids, grid refinement 101e25c274SJed Brown 111e25c274SJed Brown Notes: The DMDACreate() based object and the DMCompositeCreate() based object are examples of DMs 121e25c274SJed Brown 131e25c274SJed Brown .seealso: DMCompositeCreate(), DMDACreate(), DMSetType(), DMType 141e25c274SJed Brown S*/ 151e25c274SJed Brown typedef struct _p_DM* DM; 161e25c274SJed Brown 17*bff4a2f0SMatthew G. Knepley /*E 18*bff4a2f0SMatthew G. Knepley DMBoundaryType - Describes the choice for fill of ghost cells on physical domain boundaries. 19*bff4a2f0SMatthew G. Knepley 20*bff4a2f0SMatthew G. Knepley Level: beginner 21*bff4a2f0SMatthew G. Knepley 22*bff4a2f0SMatthew G. Knepley A boundary may be of type DM_BOUNDARY_NONE (no ghost nodes), DM_BOUNDARY_GHOST (ghost vertices/cells 23*bff4a2f0SMatthew G. Knepley exist but aren't filled, you can put values into them and then apply a stencil that uses those ghost locations), 24*bff4a2f0SMatthew G. Knepley DM_BOUNDARY_MIRROR (not yet implemented for 3d), DM_BOUNDARY_PERIODIC (ghost vertices/cells filled by the opposite 25*bff4a2f0SMatthew G. Knepley edge of the domain), or DM_BOUNDARY_TWIST (like periodic, only glued backwards like a Mobius strip). 26*bff4a2f0SMatthew G. Knepley 27*bff4a2f0SMatthew G. Knepley Note: This is information for the boundary of the __PHYSICAL__ domain. It has nothing to do with boundaries between 28*bff4a2f0SMatthew G. Knepley processes, that width is always determined by the stencil width, see DMDASetStencilWidth(). 29*bff4a2f0SMatthew G. Knepley 30*bff4a2f0SMatthew G. Knepley .seealso: DMDASetBoundaryType(), DMDACreate1d(), DMDACreate2d(), DMDACreate3d(), DMDACreate() 31*bff4a2f0SMatthew G. Knepley E*/ 32*bff4a2f0SMatthew G. Knepley typedef enum {DM_BOUNDARY_NONE, DM_BOUNDARY_GHOSTED, DM_BOUNDARY_MIRROR, DM_BOUNDARY_PERIODIC, DM_BOUNDARY_TWIST} DMBoundaryType; 33*bff4a2f0SMatthew G. Knepley 341e25c274SJed Brown #endif 35