/*@@
@routine CCTK_SyncGroupWithVarI
@date Thu Sep 18 14:27:18 1999
@author Gerd Lanfermann
@desc
Synchronizes a group which contains the given variable
(given by its index).
@enddesc
@calls CCTK_GroupIndexFromVarI
CCTK_SyncGroupI
@var GH
@vdesc Pointer to Grid Hierachy
@vtype cGH *
@vio in
@endvar
@var var
@vdesc variable index
@vtype int
@vio in
@endvar
@returntype int
@returndesc
return code of @seeroutine CCTK_SyncGroupI
@endreturndesc
@@*/
int CCTK_SyncGroupWithVarI (cGH *GH, int var)
{
int idx;
idx = CCTK_GroupIndexFromVarI (var);
return (CCTK_SyncGroupI (GH, idx));
}
/*@@
@routine CCTK_SyncGroupWithVar
@date Thu Sep 18 14:27:18 1999
@author Gerd Lanfermann
@desc
Synchronizes a group which contains the given variable
(given by its name).
@enddesc
@calls CCTK_GroupIndexFromVarI
CCTK_VarIndex
CCTK_SyncGroupI
@var GH
@vdesc Pointer to Grid Hierachy
@vtype cGH *
@vio in
@endvar
@var varname
@vdesc full variable name
@vtype const char *
@vio in
@endvar
@returntype int
@returndesc
return code of @seeroutine CCTK_SyncGroupI
@endreturndesc
@@*/
int CCTK_SyncGroupWithVar (cGH *GH, const char *varname)
{
int idx;
idx = CCTK_VarIndex (varname);
idx = CCTK_GroupIndexFromVarI (idx);
return (CCTK_SyncGroupI (GH, idx));
}
CCTK_INT Hyperslab_DefineGlobalMappingByIndex (
const cGH *GH,
CCTK_INT vindex,
CCTK_INT dim,
const CCTK_INT *direction /* vdim*dim */,
const CCTK_INT *origin /* vdim */,
const CCTK_INT *extent /* dim */,
const CCTK_INT *downsample /* dim */,
CCTK_INT table_handle,
CCTK_INT target_proc,
t_hslabConversionFn conversion_fn,
CCTK_INT *hsize /* dim */)
{
unsigned int vdim, hdim, num_dirs;
int retval;
int stagger_index;
int myproc;
int npoints;
hslab_mapping_t *mapping;
const char *error_msg;
const pGH *pughGH; /* pointer to the current pGH */
const pGA *GA; /* the variable's GA structure from PUGH */
cGroup vinfo;
/* PUGHSlab doesn't use table information */
if (table_handle >= 0)
{
CCTK_WARN (1, "Hyperslab_DefineGlobalMappingByIndex: table information is "
"ignored");
}
/* check parameter consistency */
retval = 0;
error_msg = NULL;
if (CCTK_GroupData (CCTK_GroupIndexFromVarI (vindex), &vinfo) < 0)
{
error_msg = "invalid variable index given";
retval = -1;
}
else if (vinfo.grouptype != CCTK_GF && vinfo.grouptype != CCTK_ARRAY)
{
error_msg = "invalid variable group type given "
"(not a CCTK_GF or CCTK_ARRAY type)";
retval = -2;
}
else if (dim < 0 || dim > vinfo.dim)
{
error_msg = "invalid hyperslab dimension given";
retval = -2;
}
else if (! direction || ! origin || ! extent || ! hsize)
{
error_msg = "NULL pointer(s) passed for direction/origin/extent/hsize "
"parameters";
retval = -3;
}
else if (target_proc >= CCTK_nProcs (GH))
{
error_msg = "invalid target procesor ID given";
retval = -4;
}
else if ((pughGH = (const pGH *) PUGH_pGH (GH)) == NULL)
{
error_msg = "no PUGH GH extension registered (PUGH not activated ?)";
retval = -4;
}
else
{
for (vdim = 0; vdim < (unsigned int) vinfo.dim; vdim++)
{
retval |= origin[vdim] < 0;
if (vdim < (unsigned int) dim)
{
retval |= extent[vdim] <= 0;
if (downsample)
{
retval |= downsample[vdim] <= 0;
}
}
}
if (retval)
{
error_msg = "invalid hyperslab origin/extent/downsample vectors given";
retval = -5;
}
}
if (! retval)
{
mapping = (hslab_mapping_t *) malloc (sizeof (hslab_mapping_t));
if (mapping)
{
mapping->vectors = (int *) malloc ((6*vinfo.dim + 2*dim) * sizeof (int));
}
if (mapping == NULL || mapping->vectors == NULL)
{
if (mapping)
{
free (mapping);
}
error_msg = "couldn't allocate hyperslab mapping structure";
retval = -6;
}
}
/* return in case of errors */
if (retval)
{
CCTK_VWarn (1, __LINE__, __FILE__, CCTK_THORNSTRING,
"Hyperslab_DefineGlobalMappingByIndex: %s", error_msg);
return (retval);
}
mapping->hdim = (unsigned int) dim;
mapping->vinfo = vinfo;
mapping->target_proc = target_proc;
mapping->conversion_fn = conversion_fn;
/* assign memory for the other vectors */
mapping->local_startpoint = mapping->vectors + 0*vinfo.dim;
mapping->local_endpoint = mapping->vectors + 1*vinfo.dim;
mapping->global_startpoint = mapping->vectors + 2*vinfo.dim;
mapping->global_endpoint = mapping->vectors + 3*vinfo.dim;
mapping->do_dir = mapping->vectors + 4*vinfo.dim;
mapping->downsample = mapping->vectors + 5*vinfo.dim;
mapping->local_hsize = mapping->vectors + 6*vinfo.dim + 0*dim;
mapping->global_hsize = mapping->vectors + 6*vinfo.dim + 1*dim;
/* check direction vectors */
for (hdim = 0; hdim < mapping->hdim; hdim++)
{
num_dirs = 0;
for (vdim = 0; vdim < (unsigned int) vinfo.dim; vdim++)
{
if (direction[hdim*vinfo.dim + vdim])
{
num_dirs++;
}
}
if (num_dirs == 0)
{
free (mapping->vectors); free (mapping);
CCTK_VWarn (1, __LINE__, __FILE__, CCTK_THORNSTRING,
"Hyperslab_DefineGlobalMappingByIndex: %d-direction vector "
"is a null vector", hdim);
return (-7);
}
mapping->is_diagonal_in_3D = num_dirs == 3 && mapping->hdim == 1;
if (num_dirs != 1 && ! mapping->is_diagonal_in_3D)
{
free (mapping->vectors); free (mapping);
CCTK_VWarn (1, __LINE__, __FILE__, CCTK_THORNSTRING,
"Hyperslab_DefineGlobalMappingByIndex: %d-direction vector "
"isn't axis-orthogonal", hdim);
return (-7);
}
}
/* diagonals can be extracted from non-staggered 3D variables only */
if (mapping->is_diagonal_in_3D && vinfo.stagtype != 0)
{
free (mapping->vectors); free (mapping);
CCTK_VWarn (1, __LINE__, __FILE__, CCTK_THORNSTRING,
"Hyperslab_DefineGlobalMappingByIndex: diagonals can be "
"extracted from non-staggered 3D variables only");
return (-7);
}
for (vdim = 0; vdim < (unsigned int) vinfo.dim; vdim++)
{
mapping->do_dir[vdim] = 0;
for (hdim = 0; hdim < mapping->hdim; hdim++)
{
if (direction[hdim*vinfo.dim + vdim])
{
mapping->do_dir[vdim]++;
}
}
if (mapping->do_dir[vdim] > 1)
{
free (mapping->vectors); free (mapping);
CCTK_WARN (1, "Hyperslab_DefineGlobalMappingByIndex: duplicate direction "
"vectors given");
return (-8);
}
}
/* get the pGH pointer and the variable's GA structure */
GA = (const pGA *) pughGH->variables[vindex][0];
myproc = CCTK_MyProc (GH);
/* check extent */
for (vdim = hdim = 0; vdim < (unsigned int) vinfo.dim; vdim++)
{
if (mapping->do_dir[vdim] && hdim < mapping->hdim)
{
if (origin[vdim] + extent[hdim] > GA->extras->nsize[vdim])
{
free (mapping->vectors); free (mapping);
CCTK_VWarn (1, __LINE__, __FILE__, CCTK_THORNSTRING,
"Hyperslab_DefineGlobalMappingByIndex: extent in "
"%d-direction exceeds grid size", hdim);
return (-8);
}
hdim++;
}
else if (mapping->is_diagonal_in_3D &&
origin[vdim] + extent[0] > GA->extras->nsize[vdim])
{
free (mapping->vectors); free (mapping);
CCTK_VWarn (1, __LINE__, __FILE__, CCTK_THORNSTRING,
"Hyperslab_DefineGlobalMappingByIndex: extent in "
"%d-direction exceeds grid size", vdim);
return (-8);
}
}
/* now fill out the hyperslab mapping structure */
for (vdim = hdim = 0; vdim < (unsigned int) vinfo.dim; vdim++)
{
mapping->downsample[vdim] = 1;
if (mapping->do_dir[vdim] && hdim < mapping->hdim)
{
if (downsample)
{
mapping->downsample[vdim] = downsample[hdim];
}
mapping->global_hsize[hdim] = extent[hdim] / mapping->downsample[vdim];
if (extent[hdim] % mapping->downsample[vdim])
{
mapping->global_hsize[hdim]++;
}
/* subtract ghostzones for periodic BC */
if (GA->connectivity->perme[vdim])
{
mapping->global_hsize[hdim] -= 2 * GA->extras->nghostzones[vdim];
}
hdim++;
}
else if (mapping->is_diagonal_in_3D)
{
mapping->totals = extent[0] / mapping->downsample[0];
if (extent[0] % mapping->downsample[0])
{
mapping->totals++;
}
/* subtract ghostzones for periodic BC */
if (GA->connectivity->perme[vdim])
{
mapping->totals -= 2 * GA->extras->nghostzones[vdim];
}
if ((unsigned int) mapping->global_hsize[0] > mapping->totals)
{
mapping->global_hsize[0] = mapping->totals;
}
}
}
/* check whether the full local data patch was requested as hyperslab */
mapping->is_full_hyperslab = IsFullHyperslab (GA, origin, extent, mapping);
if (mapping->is_full_hyperslab)
{
memset (mapping->local_startpoint, 0, vinfo.dim * sizeof (int));
memcpy (mapping->local_endpoint, GA->extras->lnsize, vinfo.dim*sizeof(int));
mapping->totals = GA->extras->npoints;
}
else if (mapping->is_diagonal_in_3D)
{
/* just initialize the downsample and global_startpoint vectors */
for (vdim = 0; vdim < (unsigned int) vinfo.dim; vdim++)
{
mapping->downsample[vdim] = mapping->downsample[0];
mapping->global_startpoint[vdim] = origin[vdim];
}
}
else
{
/* compute the global endpoint */
for (vdim = hdim = 0; vdim < (unsigned int) vinfo.dim; vdim++)
{
mapping->global_endpoint[vdim] = origin[vdim] +
(mapping->do_dir[vdim] ? extent[hdim++] : 1);
}
/* compute this processor's global startpoint from the global ranges */
for (vdim = 0; vdim < (unsigned int) vinfo.dim; vdim++)
{
stagger_index = CCTK_StaggerDirIndex (vdim, vinfo.stagtype);
if (origin[vdim] < MY_GLOBAL_EP (GA->extras, myproc, stagger_index, vdim))
{
mapping->global_startpoint[vdim] = origin[vdim];
if (origin[vdim] < MY_GLOBAL_SP (GA->extras, myproc,stagger_index,vdim))
{
npoints = (MY_GLOBAL_SP (GA->extras, myproc, stagger_index, vdim)
- origin[vdim]) / mapping->downsample[vdim];
if ((MY_GLOBAL_SP (GA->extras, myproc, stagger_index, vdim)
- origin[vdim]) % mapping->downsample[vdim])
{
npoints++;
}
mapping->global_startpoint[vdim] += npoints*mapping->downsample[vdim];
}
}
else
{
mapping->global_startpoint[vdim] = -1;
}
}
/* compute the local start- and endpoint from the global ranges */
mapping->totals = 1;
for (vdim = hdim = 0; vdim < (unsigned int) vinfo.dim; vdim++)
{
stagger_index = CCTK_StaggerDirIndex (vdim, vinfo.stagtype);
if (mapping->global_startpoint[vdim] >= 0 &&
mapping->global_startpoint[vdim] < MY_GLOBAL_EP (GA->extras, myproc,
stagger_index,vdim))
{
mapping->local_startpoint[vdim] = mapping->global_startpoint[vdim] -
GA->extras->lb[myproc][vdim];
}
else
{
mapping->local_startpoint[vdim] = -1;
}
if (mapping->global_endpoint[vdim] > MY_GLOBAL_SP (GA->extras, myproc,
stagger_index, vdim))
{
mapping->local_endpoint[vdim] =
MIN (MY_LOCAL_EP (GA->extras, stagger_index, vdim),
mapping->global_endpoint[vdim] -
GA->extras->lb[myproc][vdim]);
}
else
{
mapping->local_endpoint[vdim] = -1;
}
#ifdef DEBUG
printf ("direction %d: global ranges [%d, %d), local ranges[%d, %d)\n",
vdim,
mapping->global_startpoint[vdim], mapping->global_endpoint[vdim],
mapping->local_startpoint[vdim], mapping->local_endpoint[vdim]);
#endif
if (mapping->local_endpoint[vdim] < 0 ||
mapping->local_startpoint[vdim] < 0)
{
mapping->totals = 0;
mapping->local_endpoint[vdim] = mapping->local_startpoint[vdim];
}
if (mapping->do_dir[vdim])
{
/* compute the local size in each hyperslab dimension */
mapping->local_hsize[hdim] = (mapping->local_endpoint[vdim] -
mapping->local_startpoint[vdim]) /
mapping->downsample[vdim];
if ((mapping->local_endpoint[vdim] - mapping->local_startpoint[vdim]) %
mapping->downsample[vdim])
{
mapping->local_hsize[hdim]++;
}
mapping->totals *= mapping->local_hsize[hdim];
hdim++;
}
}
} /* end of else branch for 'if (mapping->is_full_hyperslab)' */
#ifdef DEBUG
printf ("total number of hyperslab data points: %d\n", mapping->totals);
#endif
#if 0
if (mapping->totals > 0)
{
/* if requested, compute the offsets into the global hyperslab */
if (hoffset_global)
{
for (i = hdim = 0; i < vinfo.dim; i++)
{
if (mapping->do_dir[i])
{
if (mapping->is_full_hyperslab)
{
hoffset_global[hdim] = GA->extras->lb[myproc][i];
}
else
{
hoffset_global[hdim] = (mapping->global_startpoint[i] -
origin[i]) / mapping->downsample[i];
if (GA->connectivity->perme[i])
{
hoffset_global[hdim] -= GA->extras->nghostzones[i];
}
}
#ifdef DEBUG
printf ("hoffset_global, hsize in direction %d: %d, %d\n",
hdim, hoffset_global[hdim], mapping->local_hsize[hdim]);
#endif
hdim++;
}
}
}
}
#endif
/* add this mapping to the mapping list */
if (mapping_list)
{
mapping_list->prev = mapping;
}
mapping->prev = NULL;
mapping->next = mapping_list;
mapping_list = mapping;
mapping->handle = nmapping_list++;
/* set the global hsize in the return arguments */
if (hsize)
{
for (hdim = 0; hdim < mapping->hdim; hdim++)
{
hsize[hdim] = mapping->global_hsize[hdim];
}
}
return (mapping->handle);
}