Date: 2026-06-01T23:13:17+00:00

Actual source code: dmmbimpl.h

      1: #pragma once

      3: #include <petscdmmoab.h>
      4: #include "petsc/private/dmimpl.h"

      6: /* This is an integer map, in addition it is also a container class
      7:    Design points:
      8:      - Low storage is the most important design point
      9:      - We want flexible insertion and deletion
     10:      - We can live with O(log) query, but we need O(1) iteration over strata
     11: */
     12: typedef struct {
     13:   moab::Interface *mbiface;
     14: #ifdef MOAB_HAVE_MPI
     15:   moab::ParallelComm *pcomm;
     16: #endif
     17:   moab::Range *tag_range; /* entities to which this tag applies */
     18:   moab::Tag    tag;
     19:   PetscInt     tag_size;
     20:   PetscBool    new_tag;
     21:   PetscBool    is_global_vec;
     22:   PetscBool    is_native_vec;
     23:   Vec          local;
     24: } Vec_MOAB;

     26: namespace moab
     27: {
     28: class NestedRefine;
     29: } // namespace moab

     31: typedef struct {
     32:   /* common data */
     33:   PetscInt dim; /* Current topological dimension handled by DMMoab */
     34:   PetscInt bs;  /* Block size that controls the strided vs interlaced configuration in discrete systems -
     35:                                                              This affects the layout and hence the degree-of-freedom of the different fields (components) */

     37:   PetscInt *dfill, *ofill; /* The diagonal and off-diagonal block-fill to indicate coupling between components */
     38:   PetscInt *materials;     /* The array that caches the material data for each element */

     40:   PetscInt     numFields;
     41:   const char **fieldNames;

     43:   /* level specific data */
     44:   PetscInt  n, nloc, nghost;          /* Number of global, local only and shared vertices for current partition */
     45:   PetscInt  nele, neleloc, neleghost; /* Number of global, local only and shared elements for current partition */
     46:   PetscInt *gsindices;                /* Global ID for all local+ghosted vertices */
     47:   PetscInt *gidmap, *lidmap;          /* Global ID indices, Local ID indices, field-based local map, field-based global map */
     48:   PetscInt  seqstart, seqend;         /* Local start and end entity IDs for vertices */
     49:   PetscInt  vstart, vend;             /* Global start and end index for distributed Vec */
     50:   PetscInt  nghostrings;              /* Number of ghost ring layers */
     51:   PetscInt  gminmax[2], lminmax[2];   /* Local and global min/max in the ID sequence */
     52:   PetscInt  refct;

     54:   /* store the mapping information */
     55:   ISLocalToGlobalMapping ltog_map;
     56:   VecScatter             ltog_sendrecv;

     58:   /* MOAB objects cached internally in DMMoab */

     60:   /* common data */
     61:   moab::Interface *mbiface; /* MOAB Interface/Core reference */
     62: #ifdef MOAB_HAVE_MPI
     63:   moab::ParallelComm *pcomm; /* MOAB ParallelComm reference */
     64: #endif
     65:   moab::Tag ltog_tag;         /* MOAB supports "global id" tags */
     66:   moab::Tag material_tag;     /* MOAB supports "material_set" tags */
     67:   PetscBool icreatedinstance; /* true if DM created moab instance internally, will destroy instance in DMDestroy */

     69:   /* store options to customize DMMoab I/O */
     70:   PetscInt      rw_dbglevel;
     71:   PetscBool     partition_by_rank;
     72:   char          extra_read_options[PETSC_MAX_PATH_LEN];
     73:   char          extra_write_options[PETSC_MAX_PATH_LEN];
     74:   MoabReadMode  read_mode;
     75:   MoabWriteMode write_mode;

     77:   /* level specific data */
     78:   moab::Range       *vowned, *vghost, *vlocal;        /* Vertex entities: strictly owned, strictly ghosted, owned+ghosted */
     79:   moab::Range       *elocal, *eghost;                 /* Topological dimensional entities: strictly owned, strictly ghosted */
     80:   moab::Range       *bndyvtx, *bndyfaces, *bndyelems; /* Boundary entities: skin vertices, skin faces and elements on the outer skin */
     81:   moab::EntityHandle fileset;                         /* The Global set to which all local entities belong */

     83:   /* level hierarchy in MOAB */
     84:   moab::NestedRefine *hierarchy;
     85:   PetscInt            nhlevels, hlevel;
     86:   moab::EntityHandle *hsets;

     88:   /* Sub-mesh level data-strucuture */
     89:   DM *parent;

     91: } DM_Moab;

     93: typedef struct {
     94:   DM_Moab            *pdmmoab;
     95:   moab::NestedRefine *hierarchy;
     96:   PetscInt            nhlevels, hlevel;
     97:   moab::EntityHandle *hsets;
     98: } SubDM_MOAB;