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/*@@
@file PostSendGA.c
@date Wed Feb 2 11:58:14 2000
@author Gabrielle Allen
@desc
The send of the three-way pugh communcations branch
which is @seefile PostReceiveGA.c, @seefile PostSendGA.c
and @seefile FinishReceiveGA.c. See the documentation for
@seeroutine PostSendGA for details on this routine.
@enddesc
@version $Header$
@@*/
#include <stdio.h>
#include "cctk.h"
#include "pugh.h"
static char *rcsid = "$Header$";
void PostSendGA1(pGH *GH, pGA *GA, int dir);
void PostSendGA3(pGH *GH, pGA *GA, int dir);
/*#define DEBUG_PUGH*/
/*@@
@routine PostSendGA
@date Thu Apr 3 11:58:59 1997
@author Paul Walker
@desc
This routine posts an asyncronous MPI send of a buffer
for a face (MPI_Isend). It does this by first packing up
a send buffer (allocated in @seeroutine SetupPGF) then
sending it out on the pipe.
<p>
Since this is an asynchronous communications model we
assume that a recieve has been posted for the send.
thus the correct calling order for this is as in
@seeroutine SyncGF, eg, after a Recv.
<p>
Note this does <b>not</b> wait on the send buffer from previous
communications. It is the users responsibility to wait on
that buffer.
@enddesc
@calledby SyncGroupGF
@history
@hdate Nov 4 1998 @hauthor Gabrielle Allen
@hdesc Allow for forced synchronization of all GFs with storage
@endhistory
@@*/
void PostSendGA(pGH *GH, pGA *GA, int dir)
{
#ifdef MPI
int stag, dircomp;
double ts, tw, tp;
MPI_Datatype mpi_type;
MPI_Datatype *send_dt;
MPI_Status ms;
if (!(GA->storage))
{
return;
}
if (!(GH->forceSync || GA->docomm[dir]))
{
return;
}
if (GA->connectivity->neighbours[GH->myproc][dir] < 0)
{
return;
}
switch (GA->vtype)
{
case CCTK_VARIABLE_CHAR:
mpi_type = PUGH_MPI_CHAR;
send_dt = GH->send_char_dt [GA->stagger];
break;
case CCTK_VARIABLE_INT:
mpi_type = PUGH_MPI_INT;
send_dt = GH->send_int_dt [GA->stagger];
break;
case CCTK_VARIABLE_REAL:
mpi_type = PUGH_MPI_REAL;
send_dt = GH->send_real_dt [GA->stagger];
break;
case CCTK_VARIABLE_COMPLEX:
mpi_type = GH->pugh_mpi_complex;
send_dt = GH->send_complex_dt [GA->stagger];
break;
default:
CCTK_WARN (1, "Unknown variable type in PostSendGA");
return;
}
ts = MPI_Wtime();
dircomp = dir+1; /* Complementary direction */
if (dircomp %2 == 0)
{
dircomp = dir-1;
}
/* Note this is the complement of the rtag set in PostReceive */
stag = 1000 + dircomp + 2 *
(GA->connectivity->neighbours[GH->myproc][dir] +
GH->nprocs * GA->id);
/* mod the tag to force MPI compliance */
stag = stag % 32768;
#ifdef DEBUG_PUGH
printf ("SEND: GA %s Side %d Proc %d stag %d Size %d to %d\n",
GA->name,
dir,
GH->myproc,
stag,
GA->buffer_sz[dir],
GA->connectivity->neighbours[GH->myproc][dir]);
#endif
if (GH->commmodel == PUGH_DERIVEDTYPES)
{
CACTUS_MPI_ERROR (MPI_Isend (GA->data,
1, send_dt [dir],
GA->connectivity->neighbours [GH->myproc][dir], stag,
GH->PUGH_COMM_WORLD, &(GA->sreq [dir])));
}
if (GH->commmodel == PUGH_ALLOCATEDBUFFERS)
{
if (GA->connectivity->dim == 3)
{
PostSendGA3(GH,GA,dir);
}
else if (GA->connectivity->dim == 1)
{
PostSendGA1(GH,GA,dir);
}
else
{
CCTK_WARN(0,"PUGH does not yet support this dimension");
}
tp = MPI_Wtime();
/* post send */
CACTUS_MPI_ERROR (MPI_Isend (GA->send_buffer [dir],
GA->buffer_sz [dir], mpi_type,
GA->connectivity->neighbours [GH->myproc][dir], stag,
GH->PUGH_COMM_WORLD, &(GA->sreq [dir])));
tw = MPI_Wtime();
#ifdef COMM_TIMING
printf ("GA %s Dir %d Time %f\n", GA->name, dir, tw-ts);
#endif
}
#endif
}
void PostSendGA3(pGH *GH, pGA *GA, int dir)
{
int ii,jj,kk,xx;
int istart, iend;
int jstart, jend;
int kstart, kend;
CCTK_CHAR *char_data;
CCTK_INT *int_data;
CCTK_REAL *real_data;
CCTK_COMPLEX *complex_data;
/* Copy my information into the send buffer */
istart = GA->extras->overlap[GA->stagger][0][dir][0];
iend = GA->extras->overlap[GA->stagger][1][dir][0];
jstart = GA->extras->overlap[GA->stagger][0][dir][1];
jend = GA->extras->overlap[GA->stagger][1][dir][1];
kstart = GA->extras->overlap[GA->stagger][0][dir][2];
kend = GA->extras->overlap[GA->stagger][1][dir][2];
/* Great now copy */
xx = 0;
switch (GA->vtype)
{
case CCTK_VARIABLE_CHAR:
char_data = (CCTK_CHAR *) GA->send_buffer [dir];
for (kk=kstart; kk<kend; kk++)
{
for (jj=jstart; jj<jend; jj++)
{
for (ii=istart; ii<iend; ii++)
{
char_data [xx++] =
((CCTK_CHAR *) GA->data) [DATINDEX (GA->extras,ii,jj,kk)];
}
}
}
break;
case CCTK_VARIABLE_INT:
int_data = (CCTK_INT *) GA->send_buffer [dir];
for (kk=kstart; kk<kend; kk++)
{
for (jj=jstart; jj<jend; jj++)
{
for (ii=istart; ii<iend; ii++)
{
int_data [xx++] =
((CCTK_INT *) GA->data) [DATINDEX (GA->extras,ii,jj,kk)];
}
}
}
break;
case CCTK_VARIABLE_REAL:
real_data = (CCTK_REAL *) GA->send_buffer [dir];
for (kk=kstart; kk<kend; kk++)
{
for (jj=jstart; jj<jend; jj++)
{
for (ii=istart; ii<iend; ii++)
{
real_data [xx++] =
((CCTK_REAL *) GA->data) [DATINDEX (GA->extras,ii,jj,kk)];
}
}
}
break;
case CCTK_VARIABLE_COMPLEX:
complex_data = (CCTK_COMPLEX *) GA->send_buffer [dir];
for (kk=kstart; kk<kend; kk++)
{
for (jj=jstart; jj<jend; jj++)
{
for (ii=istart; ii<iend; ii++)
{
complex_data [xx++] =
((CCTK_COMPLEX *) GA->data) [DATINDEX (GA->extras,ii,jj,kk)];
}
}
}
break;
}
}
void PostSendGA1(pGH *GH, pGA *GA, int dir)
{
int ii,xx;
int istart, iend;
CCTK_CHAR *char_data;
CCTK_INT *int_data;
CCTK_REAL *real_data;
CCTK_COMPLEX *complex_data;
/* Copy my information into the send buffer */
istart = GA->extras->overlap[GA->stagger][0][dir][0];
iend = GA->extras->overlap[GA->stagger][1][dir][0];
/* Great now copy */
xx = 0;
switch (GA->vtype)
{
case CCTK_VARIABLE_CHAR:
char_data = (CCTK_CHAR *) GA->send_buffer [dir];
for (ii=istart; ii<iend; ii++)
{
char_data [xx++] = ((CCTK_CHAR *) GA->data) [ii];
}
break;
case CCTK_VARIABLE_INT:
int_data = (CCTK_INT *) GA->send_buffer [dir];
for (ii=istart; ii<iend; ii++)
{
int_data [xx++] = ((CCTK_INT *) GA->data) [ii];
}
break;
case CCTK_VARIABLE_REAL:
real_data = (CCTK_REAL *) GA->send_buffer [dir];
for (ii=istart; ii<iend; ii++)
{
real_data [xx++] = ((CCTK_REAL *) GA->data) [ii];
}
break;
case CCTK_VARIABLE_COMPLEX:
complex_data = (CCTK_COMPLEX *) GA->send_buffer [dir];
for (ii=istart; ii<iend; ii++)
{
complex_data [xx++] = ((CCTK_COMPLEX *) GA->data) [ii];
}
break;
}
}
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