mirror of
https://github.com/tildearrow/furnace.git
synced 2024-12-18 06:20:17 +00:00
59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
/*
|
|
* Copyright (c) 2003, 2007-14 Matteo Frigo
|
|
* Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*/
|
|
|
|
#include "ifftw-mpi.h"
|
|
|
|
/* During planning, if any process fails to create a plan then
|
|
all of the processes must fail. This synchronization is implemented
|
|
by the following routine.
|
|
|
|
Instead of
|
|
if (failure) goto nada;
|
|
we instead do:
|
|
if (any_true(failure, comm)) goto nada;
|
|
*/
|
|
|
|
int XM(any_true)(int condition, MPI_Comm comm)
|
|
{
|
|
int result;
|
|
MPI_Allreduce(&condition, &result, 1, MPI_INT, MPI_LOR, comm);
|
|
return result;
|
|
}
|
|
|
|
/***********************************************************************/
|
|
|
|
#if defined(FFTW_DEBUG)
|
|
/* for debugging, we include an assertion to make sure that
|
|
MPI problems all produce equal hashes, as checked by this routine: */
|
|
|
|
int XM(md5_equal)(md5 m, MPI_Comm comm)
|
|
{
|
|
unsigned long s0[4];
|
|
int i, eq_me, eq_all;
|
|
|
|
X(md5end)(&m);
|
|
for (i = 0; i < 4; ++i) s0[i] = m.s[i];
|
|
MPI_Bcast(s0, 4, MPI_UNSIGNED_LONG, 0, comm);
|
|
for (i = 0; i < 4 && s0[i] == m.s[i]; ++i) ;
|
|
eq_me = i == 4;
|
|
MPI_Allreduce(&eq_me, &eq_all, 1, MPI_INT, MPI_LAND, comm);
|
|
return eq_all;
|
|
}
|
|
#endif
|