mirror of
https://github.com/tildearrow/furnace.git
synced 2024-11-24 05:25:12 +00:00
130 lines
3.6 KiB
C
130 lines
3.6 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
|
|
*
|
|
*/
|
|
|
|
/* "MPI" DFTs where all of the data is on one processor...just
|
|
call through to serial API. */
|
|
|
|
#include "mpi-dft.h"
|
|
#include "dft/dft.h"
|
|
|
|
typedef struct {
|
|
plan_mpi_dft super;
|
|
plan *cld;
|
|
INT roff, ioff;
|
|
} P;
|
|
|
|
static void apply(const plan *ego_, R *I, R *O)
|
|
{
|
|
const P *ego = (const P *) ego_;
|
|
plan_dft *cld;
|
|
INT roff = ego->roff, ioff = ego->ioff;
|
|
cld = (plan_dft *) ego->cld;
|
|
cld->apply(ego->cld, I+roff, I+ioff, O+roff, O+ioff);
|
|
}
|
|
|
|
static void awake(plan *ego_, enum wakefulness wakefulness)
|
|
{
|
|
P *ego = (P *) ego_;
|
|
X(plan_awake)(ego->cld, wakefulness);
|
|
}
|
|
|
|
static void destroy(plan *ego_)
|
|
{
|
|
P *ego = (P *) ego_;
|
|
X(plan_destroy_internal)(ego->cld);
|
|
}
|
|
|
|
static void print(const plan *ego_, printer *p)
|
|
{
|
|
const P *ego = (const P *) ego_;
|
|
p->print(p, "(mpi-dft-serial %(%p%))", ego->cld);
|
|
}
|
|
|
|
int XM(dft_serial_applicable)(const problem_mpi_dft *p)
|
|
{
|
|
return (1
|
|
&& p->flags == 0 /* TRANSPOSED/SCRAMBLED_IN/OUT not supported */
|
|
&& ((XM(is_local)(p->sz, IB) && XM(is_local)(p->sz, OB))
|
|
|| p->vn == 0));
|
|
}
|
|
|
|
static plan *mkplan(const solver *ego, const problem *p_, planner *plnr)
|
|
{
|
|
const problem_mpi_dft *p = (const problem_mpi_dft *) p_;
|
|
P *pln;
|
|
plan *cld;
|
|
int my_pe;
|
|
R *ri, *ii, *ro, *io;
|
|
static const plan_adt padt = {
|
|
XM(dft_solve), awake, print, destroy
|
|
};
|
|
|
|
UNUSED(ego);
|
|
|
|
/* check whether applicable: */
|
|
if (!XM(dft_serial_applicable)(p))
|
|
return (plan *) 0;
|
|
|
|
X(extract_reim)(p->sign, p->I, &ri, &ii);
|
|
X(extract_reim)(p->sign, p->O, &ro, &io);
|
|
|
|
MPI_Comm_rank(p->comm, &my_pe);
|
|
if (my_pe == 0 && p->vn > 0) {
|
|
int i, rnk = p->sz->rnk;
|
|
tensor *sz = X(mktensor)(p->sz->rnk);
|
|
sz->dims[rnk - 1].is = sz->dims[rnk - 1].os = 2 * p->vn;
|
|
sz->dims[rnk - 1].n = p->sz->dims[rnk - 1].n;
|
|
for (i = rnk - 1; i > 0; --i) {
|
|
sz->dims[i - 1].is = sz->dims[i - 1].os =
|
|
sz->dims[i].is * sz->dims[i].n;
|
|
sz->dims[i - 1].n = p->sz->dims[i - 1].n;
|
|
}
|
|
|
|
cld = X(mkplan_d)(plnr,
|
|
X(mkproblem_dft_d)(sz,
|
|
X(mktensor_1d)(p->vn, 2, 2),
|
|
ri, ii, ro, io));
|
|
}
|
|
else { /* idle process: make nop plan */
|
|
cld = X(mkplan_d)(plnr,
|
|
X(mkproblem_dft_d)(X(mktensor_0d)(),
|
|
X(mktensor_1d)(0,0,0),
|
|
ri, ii, ro, io));
|
|
}
|
|
if (XM(any_true)(!cld, p->comm)) return (plan *) 0;
|
|
|
|
pln = MKPLAN_MPI_DFT(P, &padt, apply);
|
|
pln->cld = cld;
|
|
pln->roff = ro - p->O;
|
|
pln->ioff = io - p->O;
|
|
X(ops_cpy)(&cld->ops, &pln->super.super.ops);
|
|
return &(pln->super.super);
|
|
}
|
|
|
|
static solver *mksolver(void)
|
|
{
|
|
static const solver_adt sadt = { PROBLEM_MPI_DFT, mkplan, 0 };
|
|
return MKSOLVER(solver, &sadt);
|
|
}
|
|
|
|
void XM(dft_serial_register)(planner *p)
|
|
{
|
|
REGISTER_SOLVER(p, mksolver());
|
|
}
|