Actual source code: petscdmpatch.h
petsc-3.12.1 2019-10-22
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      1: /*
      2:   DMPatch, for domains covered by sets of patches.
      3: */
      4: #if !defined(PETSCDMPATCH_H)
      5: #define PETSCDMPATCH_H
      6:  #include <petscdm.h>

      8: /*S
      9:   DMPATCH - DM object that encapsulates a domain divided into many patches

     11:   Level: intermediate

     13: .seealso:  DM, DMPatchCreate()
     14: S*/
     15: PETSC_EXTERN PetscErrorCode DMPatchCreate(MPI_Comm, DM*);

     17: PETSC_EXTERN PetscErrorCode DMPatchZoom(DM,Vec,MatStencil,MatStencil,MPI_Comm,DM*,PetscSF*,PetscSF*);
     18: PETSC_EXTERN PetscErrorCode DMPatchSolve(DM);
     19: PETSC_EXTERN PetscErrorCode DMPatchGetPatchSize(DM,MatStencil*);
     20: PETSC_EXTERN PetscErrorCode DMPatchSetPatchSize(DM,MatStencil);
     21: PETSC_EXTERN PetscErrorCode DMPatchGetCommSize(DM,MatStencil*);
     22: PETSC_EXTERN PetscErrorCode DMPatchSetCommSize(DM,MatStencil);
     23: PETSC_EXTERN PetscErrorCode DMPatchGetCoarse(DM,DM*);
     24: PETSC_EXTERN PetscErrorCode DMPatchCreateGrid(MPI_Comm,PetscInt,MatStencil,MatStencil,MatStencil,DM*);

     26: /*
     27:  * We want each patch to consist of an entire DM, DMDA at first
     28:  - We cannot afford to store much more than the data from a single patch in memory
     29:    - No global PetscSection, only PetscLayout
     30:    - Optional scatters
     31:    * There is a storable coarse level, which will also be a traditional DM (DMDA here)
     32:    * The local and global vectors correspond to a ghosted patch
     33:  * Need a way to activate a patch
     34:    * Jack in sizes for l/g vectors
     35:  - Need routine for viewing a full global vector
     36:  - Jed handles solver
     37: */

     39: #endif