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/*@@
@file P2LMappings.c
@date Sun Oct 30 17:02:58 CST 2005
@author Dylan Stark
@desc
Provides routines for mapping between physical and
logical numberings of processors.
@enddesc
@version $Header$
@@*/
#include <stdio.h>
#include <stdlib.h>
#include "cctk.h"
#include "pugh_Register.h"
static const char *rcsid = "$Header$";
CCTK_FILEVERSION(CactusPUGH_PUGH_P2L_c);
/********************************************************************
********************* Local Data Types ***********************
********************************************************************/
/********************************************************************
********************* Local Routine Prototypes *********************
********************************************************************/
static void *CreateDirectTranslation(int dim, int *nprocs, int np);
static int DestroyDirectTranslation(void *table);
static int DirectPhysicalToLogical(void *table, int proc);
static int DirectLogicalToPhysical(void *table, int ijk);
static void *CreateExampleTranslation(int dim, int *nprocs, int np);
static int DestroyExampleTranslation(void *table);
static int ExamplePhysicalToLogical(void *table, int proc);
static int ExampleLogicalToPhysical(void *table, int ijk);
/********************************************************************
********************* Other Routine Prototypes *********************
********************************************************************/
/********************************************************************
********************* Local Data *****************************
********************************************************************/
/********************************************************************
********************* Scheduled Routines *************************
********************************************************************/
/* Fortran wrappers appear immediately after C definition of function */
/*@@
@routine PUGH_RegisterDefaultRoutines
@date Wed Dec 14 16:51:22 2005
@author Tom Goodale
@desc
Registers the default translation and topology generation routines.
@enddesc
@calls
@calledby
@history
@endhistory
@@*/
int PUGH_RegisterPUGHP2LRoutines(void)
{
PUGH_RegisterP2L(CreateDirectTranslation,
DestroyDirectTranslation,
DirectPhysicalToLogical,
DirectLogicalToPhysical,
"direct");
PUGH_RegisterP2L(CreateExampleTranslation,
DestroyExampleTranslation,
ExamplePhysicalToLogical,
ExampleLogicalToPhysical,
"example");
return 0;
}
/********************************************************************
********************* External Routines **********************
********************************************************************/
/********************************************************************
********************* Local Routines *****************************
********************************************************************/
/*@@
@routine CreateDirectTranslation
@date Wed Dec 14 19:00:57 2005
@author Tom Goodale
@desc
Creates a dummy translation table as one isn't necessary for
the direct case.
@enddesc
@calls
@calledby
@history
@endhistory
@@*/
void *CreateDirectTranslation(int dim, int *nprocs, int np)
{
static int dummy = 1;
return (void *)&dummy;
}
/*@@
@routine DestroyDirectTranslation
@date Wed Dec 14 19:00:57 2005
@author Tom Goodale
@desc
Routine which would destroy the translation table if there was one.
@enddesc
@calls
@calledby
@history
@endhistory
@@*/
static int DestroyDirectTranslation(void *table)
{
return 0;
}
/*@@
@routine DirectPhysicalToLogical
@date Wed Dec 14 19:02:56 2005
@author Tom Goodale
@desc
Direct map of the physical processor number to the logical one.
@enddesc
@calls
@calledby
@history
@endhistory
@@*/
static int DirectPhysicalToLogical(void *table, int proc)
{
return proc;
}
/*@@
@routine DirectLogicalToPhysical
@date Wed Dec 14 19:02:56 2005
@author Tom Goodale
@desc
Direct map of the logical processor number to the physical one.
@enddesc
@calls
@calledby
@history
@endhistory
@@*/
static int DirectLogicalToPhysical(void *table, int ijk)
{
return ijk;
}
/*@@
@routine CreateExampleTranslation
@date Sat Oct 8 22:24:53 CDT 2005
@author Dylan Stark
@desc
Allocates an int[2][np] array where the first
row maps id->ijk and the second row maps ijk->id.
@enddesc
@@*/
void *CreateExampleTranslation(int dim, int *nprocs, int np)
{
int i;
int **translation;
translation = (int **)malloc(2*sizeof(int *));
if (translation)
{
translation[0] = malloc(np*sizeof(int));
translation[1] = malloc(np*sizeof(int));
if (translation[0] && translation[1])
{
for (i=0; i<np; i++)
{
translation[0][i]=i;
translation[1][i]=i;
}
}
else
{
if (translation[0])
{
free(translation[0]);
}
if (translation[1])
{
free(translation[1]);
}
free(translation);
translation = NULL;
}
}
return (void *)translation;
}
/*@@
@routine DestroyExampleTranslation
@date Sat Oct 8 22:31:52 CDT 2005
@author Dylan Stark
@desc
Deallocate memory for the translation.
@enddesc
@@*/
static int DestroyExampleTranslation(void *table)
{
int **translation = (int **)table;
free(translation[0]);
free(translation[1]);
free(translation);
return 0;
}
/*@@
@routine ExamplePhysicalToLogical
@date Sat Oct 8 21:45:52 CDT 2005
@author Dylan Stark
@desc
Take an MPI processor number and map it to some logical index.
@enddesc
@@*/
static int ExamplePhysicalToLogical(void *table, int proc)
{
int **translation = (int **)table;
return translation[0][proc];
}
/*@@
@routine LogicalToPhysical
@date Sat Oct 8 21:48:52 CDT 2005
@author Dylan Stark
@desc
Take a logical index and map it to a MPI processor number.
@enddesc
@@*/
static int ExampleLogicalToPhysical(void *table, int ijk)
{
int **translation = (int **)table;
return translation[1][ijk];
}
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