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/*@@
@header pGH.h
@date Fri Feb 21 10:12:58 1997
@author Tom Goodale, Paul Walker
@desc
The Pugh Grid Hierarchy structure.
@enddesc
@version $Header$
@@*/
#include "pugh_constants.h"
typedef struct PGH
{
/* pGH identifier */
void *callerid;
int dim; /* The dimension of the GH */
/* Size of the processor group */
int nprocs; /* Number of processors */
int myproc; /* My processor */
int commmodel; /* Comm model is PUGH_ALLOCATEDBUFFERS */
/* or PUGH_DERIVEDTYPES. Currently unused */
/* Size of the problems */
int nvariables; /* Number of Grid variables */
int narrays; /* Number of Grid arrays (inc. timelevels) */
void ***variables; /* Pointers to them */
/* What time level we're on */
int timelevel;
int *perme; /* Periodic in each direction? */
int periodic; /* Is the system periodic? */
int forceSync; /* force synchronisation of GFs with storage */
/* Coordinate information */
/* FIXME: this is only needed for BAM */
CCTK_REAL dx0, dy0, dz0, dt0; /* Delta of our system */
/* Identification for a pGH */
int level; /* level in Berger-Oliger stack */
int mglevel; /* level in multigrid stack */
int convlevel; /* level in convergence stack */
/* pGH flags */
int active; /* 1 -> GH active */
/* 0 -> GH is skipped for conv.test */
/* is used in NanCheckGH.c */
int comm_time; /* time spent in communication */
#ifdef CCTK_MPI
MPI_Datatype PUGH_mpi_complex;/* MPI datatype for generic CCTK_COMPLEX type */
MPI_Datatype PUGH_mpi_complex8;/* same for fixed-precision CCTK_COMPLEX */
MPI_Datatype PUGH_mpi_complex16;
MPI_Datatype PUGH_mpi_complex32;
MPI_Comm PUGH_COMM_WORLD; /* the MPI communicator */
#ifdef PUGH_WITH_DERIVED_DATATYPES
/* Derived data types for communication */
MPI_Datatype send_char_dt [PUGH_NSTAGGER][6];
MPI_Datatype recv_char_dt [PUGH_NSTAGGER][6];
MPI_Datatype send_int_dt [PUGH_NSTAGGER][6];
MPI_Datatype recv_int_dt [PUGH_NSTAGGER][6];
MPI_Datatype send_real_dt [PUGH_NSTAGGER][6];
MPI_Datatype recv_real_dt [PUGH_NSTAGGER][6];
MPI_Datatype send_complex_dt [PUGH_NSTAGGER][6];
MPI_Datatype recv_complex_dt [PUGH_NSTAGGER][6];
#endif
#endif
/* Used for all grid functions */
pGExtras **GFExtras; /* [dim] stagger ? */
pConnectivity **Connectivity; /* [dim] */
char *identity_string; /* identifier for this pGH */
} pGH;
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