/usr/lib/petscdir/3.7.5/x86_64-linux-gnu-complex/include/petsc/private/pcgamgimpl.h is in libpetsc-complex-3.7.5-dev 3.7.5+dfsg1-4+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 | #if !defined(__GAMG_IMPL)
#define __GAMG_IMPL
#include <petsc/private/pcimpl.h>
#include <petsc/private/pcmgimpl.h> /*I "petscksp.h" I*/
struct _PCGAMGOps {
PetscErrorCode (*graph)(PC, Mat, Mat*);
PetscErrorCode (*coarsen)(PC, Mat*, PetscCoarsenData**);
PetscErrorCode (*prolongator)(PC, Mat, Mat, PetscCoarsenData*, Mat*);
PetscErrorCode (*optprolongator)(PC, Mat, Mat*);
PetscErrorCode (*createlevel)(PC, Mat, PetscInt, Mat *, Mat *, PetscMPIInt *, IS *);
PetscErrorCode (*createdefaultdata)(PC, Mat); /* for data methods that have a default (SA) */
PetscErrorCode (*setfromoptions)(PetscOptionItems*,PC);
PetscErrorCode (*destroy)(PC);
PetscErrorCode (*view)(PC,PetscViewer);
};
/* Private context for the GAMG preconditioner */
typedef struct gamg_TAG {
PCGAMGType type;
PetscInt Nlevels;
PetscInt setup_count;
PetscBool repart;
PetscBool reuse_prol;
PetscBool use_aggs_in_gasm;
PetscInt min_eq_proc;
PetscInt coarse_eq_limit;
PetscReal threshold; /* common quatity to many AMG methods so keep it up here */
PetscInt current_level; /* stash construction state */
/* these 4 are all related to the method data and should be in the subctx */
PetscInt data_sz; /* nloc*data_rows*data_cols */
PetscInt data_cell_rows;
PetscInt data_cell_cols;
PetscInt orig_data_cell_rows;
PetscInt orig_data_cell_cols;
PetscReal *data; /* [data_sz] blocked vector of vertex data on fine grid (coordinates/nullspace) */
PetscReal *orig_data; /* cache data */
struct _PCGAMGOps *ops;
char *gamg_type_name;
PetscRandom random; /* used to generate any random numbers needed by GAMG */
void *subctx;
} PC_GAMG;
PetscErrorCode PCReset_MG(PC);
/* hooks create derivied classes */
PetscErrorCode PCCreateGAMG_GEO(PC);
PetscErrorCode PCCreateGAMG_AGG(PC);
PetscErrorCode PCCreateGAMG_Classical(PC);
PetscErrorCode PCDestroy_GAMG(PC);
/* helper methods */
PetscErrorCode PCGAMGCreateGraph(Mat, Mat*);
PetscErrorCode PCGAMGFilterGraph(Mat*, PetscReal, PetscBool);
PetscErrorCode PCGAMGGetDataWithGhosts(Mat, PetscInt, PetscReal[],PetscInt*, PetscReal **);
#if defined PETSC_USE_LOG
#define PETSC_GAMG_USE_LOG
enum tag {SET1,SET2,GRAPH,GRAPH_MAT,GRAPH_FILTER,GRAPH_SQR,SET4,SET5,SET6,FIND_V,SET7,SET8,SET9,SET10,SET11,SET12,SET13,SET14,SET15,SET16,NUM_SET};
#if defined PETSC_GAMG_USE_LOG
PETSC_INTERN PetscLogEvent petsc_gamg_setup_events[NUM_SET];
#endif
PETSC_INTERN PetscLogEvent PC_GAMGGraph_AGG;
PETSC_INTERN PetscLogEvent PC_GAMGGraph_GEO;
PETSC_INTERN PetscLogEvent PC_GAMGCoarsen_AGG;
PETSC_INTERN PetscLogEvent PC_GAMGCoarsen_GEO;
PETSC_INTERN PetscLogEvent PC_GAMGProlongator_AGG;
PETSC_INTERN PetscLogEvent PC_GAMGProlongator_GEO;
PETSC_INTERN PetscLogEvent PC_GAMGOptProlongator_AGG;
#endif
typedef struct _GAMGHashTable {
PetscInt *table;
PetscInt *data;
PetscInt size;
} GAMGHashTable;
PETSC_EXTERN PetscErrorCode GAMGTableCreate(PetscInt, GAMGHashTable*);
PETSC_EXTERN PetscErrorCode GAMGTableDestroy(GAMGHashTable*);
PETSC_EXTERN PetscErrorCode GAMGTableAdd(GAMGHashTable*,PetscInt,PetscInt);
#define GAMG_HASH(key) ((((PetscInt)7)*key)%a_tab->size)
#undef __FUNCT__
#define __FUNCT__ "GAMGTableFind"
PETSC_STATIC_INLINE PetscErrorCode GAMGTableFind(GAMGHashTable *a_tab, PetscInt a_key, PetscInt *a_data)
{
PetscInt kk,idx;
PetscFunctionBegin;
if (a_key<0) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_USER,"Negative key %d.",a_key);
for (kk = 0, idx = GAMG_HASH(a_key); kk < a_tab->size; kk++, idx = (idx==(a_tab->size-1)) ? 0 : idx + 1) {
if (a_tab->table[idx] == a_key) {
*a_data = a_tab->data[idx];
break;
} else if (a_tab->table[idx] == -1) {
/* not here */
*a_data = -1;
break;
}
}
if (kk==a_tab->size) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_USER,"key %d not found in table",a_key);
PetscFunctionReturn(0);
}
#endif
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