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diff.c
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diff.c
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/***********************************************************************
* Copyright (C) 2002,2003,2004,2005,2006,2007,2008 Carsten Urbach
*
* This file is part of tmLQCD.
*
* tmLQCD 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 3 of the License, or
* (at your option) any later version.
*
* tmLQCD 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 tmLQCD. If not, see <http://www.gnu.org/licenses/>.
***********************************************************************/
/*******************************************************************************
* $Id$
*
* void diff(spinor * const Q,spinor * const R,spinor * const S)
* Makes the difference (*Q) = (*R) - (*S)
*******************************************************************************/
#ifdef HAVE_CONFIG_H
# include<config.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#ifdef _STD_C99_COMPLEX_CHECKED
# include <complex.h>
#endif
#ifdef apenext
# include <topology.h>
# include <queue.h>
#endif
#include "su3.h"
#include "diff.h"
#if ((!defined _STD_C99_COMPLEX_CHECKED) && (!defined apenext) && (!defined BGL))
void diff(spinor * const Q,spinor * const R,spinor * const S, const int N)
{
int ix;
spinor *q,*r,*s;
/* Change due to even-odd preconditioning : VOLUME to VOLUME/2 */
for (ix = 0; ix < N; ix++) {
q=(spinor *) Q + ix;
r=(spinor *) R + ix;
s=(spinor *) S + ix;
(*q).s0.c0.re=(*r).s0.c0.re-(*s).s0.c0.re;
(*q).s0.c0.im=(*r).s0.c0.im-(*s).s0.c0.im;
(*q).s0.c1.re=(*r).s0.c1.re-(*s).s0.c1.re;
(*q).s0.c1.im=(*r).s0.c1.im-(*s).s0.c1.im;
(*q).s0.c2.re=(*r).s0.c2.re-(*s).s0.c2.re;
(*q).s0.c2.im=(*r).s0.c2.im-(*s).s0.c2.im;
(*q).s1.c0.re=(*r).s1.c0.re-(*s).s1.c0.re;
(*q).s1.c0.im=(*r).s1.c0.im-(*s).s1.c0.im;
(*q).s1.c1.re=(*r).s1.c1.re-(*s).s1.c1.re;
(*q).s1.c1.im=(*r).s1.c1.im-(*s).s1.c1.im;
(*q).s1.c2.re=(*r).s1.c2.re-(*s).s1.c2.re;
(*q).s1.c2.im=(*r).s1.c2.im-(*s).s1.c2.im;
(*q).s2.c0.re=(*r).s2.c0.re-(*s).s2.c0.re;
(*q).s2.c0.im=(*r).s2.c0.im-(*s).s2.c0.im;
(*q).s2.c1.re=(*r).s2.c1.re-(*s).s2.c1.re;
(*q).s2.c1.im=(*r).s2.c1.im-(*s).s2.c1.im;
(*q).s2.c2.re=(*r).s2.c2.re-(*s).s2.c2.re;
(*q).s2.c2.im=(*r).s2.c2.im-(*s).s2.c2.im;
(*q).s3.c0.re=(*r).s3.c0.re-(*s).s3.c0.re;
(*q).s3.c0.im=(*r).s3.c0.im-(*s).s3.c0.im;
(*q).s3.c1.re=(*r).s3.c1.re-(*s).s3.c1.re;
(*q).s3.c1.im=(*r).s3.c1.im-(*s).s3.c1.im;
(*q).s3.c2.re=(*r).s3.c2.re-(*s).s3.c2.re;
(*q).s3.c2.im=(*r).s3.c2.im-(*s).s3.c2.im;
}
}
#elif ((defined BGL) && (defined XLC))
/***************************************
*
* diff with intrinsics
*
* Carsten.Urbach@liverpool.ac.uk
*
***************************************/
# include"bgl.h"
void diff(spinor * const Q,spinor * const R,spinor * const S, const int N) {
int ix = 1;
double *s ALIGN;
double *sp ALIGN;
double *r ALIGN;
double *rp ALIGN;
double *q ALIGN;
double _Complex x00, x01, x02, x03, x04, x05, x06, x07,
x08, x09, x10, x11;
double _Complex y00, y01, y02, y03, y04, y05, y06, y07,
y08, y09, y10, y11;
#pragma disjoint(*R, *S)
__alignx(16, Q);
__alignx(16, R);
__alignx(16, S);
r = (double*) R;
s = (double*) S;
q = (double*) Q;
rp = r + 24;
sp = s + 24;
_prefetch_spinor(rp);
_prefetch_spinor(sp);
x00 = __lfpd(r);
x01 = __lfpd(r+2);
x02 = __lfpd(r+4);
x03 = __lfpd(r+6);
x04 = __lfpd(r+8);
x05 = __lfpd(r+10);
x06 = __lfpd(r+12);
x07 = __lfpd(r+14);
x08 = __lfpd(r+16);
x09 = __lfpd(r+18);
x10 = __lfpd(r+20);
x11 = __lfpd(r+22);
y00 = __lfpd(s);
y01 = __lfpd(s+2);
y02 = __lfpd(s+4);
y03 = __lfpd(s+6);
y04 = __lfpd(s+8);
y05 = __lfpd(s+10);
y06 = __lfpd(s+12);
y07 = __lfpd(s+14);
y08 = __lfpd(s+16);
y09 = __lfpd(s+18);
y10 = __lfpd(s+20);
y11 = __lfpd(s+22);
__stfpd(q, __fpsub(x00, y00));
__stfpd(q+2, __fpsub(x01, y01));
__stfpd(q+4, __fpsub(x02, y02));
__stfpd(q+6, __fpsub(x03, y03));
__stfpd(q+8, __fpsub(x04, y04));
__stfpd(q+10, __fpsub(x05, y05));
__stfpd(q+12, __fpsub(x06, y06));
__stfpd(q+14, __fpsub(x07, y07));
__stfpd(q+16, __fpsub(x08, y08));
__stfpd(q+18, __fpsub(x09, y09));
__stfpd(q+20, __fpsub(x10, y10));
__stfpd(q+22, __fpsub(x11, y11));
s = sp;
r = rp;
q+=24;
#pragma unroll(12)
for(ix = 1; ix < N-1; ix++) {
rp+=24;
sp+=24;
_prefetch_spinor(rp);
_prefetch_spinor(sp);
x00 = __lfpd(r);
x01 = __lfpd(r+2);
x02 = __lfpd(r+4);
x03 = __lfpd(r+6);
x04 = __lfpd(r+8);
x05 = __lfpd(r+10);
x06 = __lfpd(r+12);
x07 = __lfpd(r+14);
x08 = __lfpd(r+16);
x09 = __lfpd(r+18);
x10 = __lfpd(r+20);
x11 = __lfpd(r+22);
y00 = __lfpd(s);
y01 = __lfpd(s+2);
y02 = __lfpd(s+4);
y03 = __lfpd(s+6);
y04 = __lfpd(s+8);
y05 = __lfpd(s+10);
y06 = __lfpd(s+12);
y07 = __lfpd(s+14);
y08 = __lfpd(s+16);
y09 = __lfpd(s+18);
y10 = __lfpd(s+20);
y11 = __lfpd(s+22);
__stfpd(q, __fpsub(x00, y00));
__stfpd(q+2, __fpsub(x01, y01));
__stfpd(q+4, __fpsub(x02, y02));
__stfpd(q+6, __fpsub(x03, y03));
__stfpd(q+8, __fpsub(x04, y04));
__stfpd(q+10, __fpsub(x05, y05));
__stfpd(q+12, __fpsub(x06, y06));
__stfpd(q+14, __fpsub(x07, y07));
__stfpd(q+16, __fpsub(x08, y08));
__stfpd(q+18, __fpsub(x09, y09));
__stfpd(q+20, __fpsub(x10, y10));
__stfpd(q+22, __fpsub(x11, y11));
s = sp;
r = rp;
q+=24;
}
x00 = __lfpd(r);
x01 = __lfpd(r+2);
x02 = __lfpd(r+4);
x03 = __lfpd(r+6);
x04 = __lfpd(r+8);
x05 = __lfpd(r+10);
x06 = __lfpd(r+12);
x07 = __lfpd(r+14);
x08 = __lfpd(r+16);
x09 = __lfpd(r+18);
x10 = __lfpd(r+20);
x11 = __lfpd(r+22);
y00 = __lfpd(s);
y01 = __lfpd(s+2);
y02 = __lfpd(s+4);
y03 = __lfpd(s+6);
y04 = __lfpd(s+8);
y05 = __lfpd(s+10);
y06 = __lfpd(s+12);
y07 = __lfpd(s+14);
y08 = __lfpd(s+16);
y09 = __lfpd(s+18);
y10 = __lfpd(s+20);
y11 = __lfpd(s+22);
__stfpd(q, __fpsub(x00, y00));
__stfpd(q+2, __fpsub(x01, y01));
__stfpd(q+4, __fpsub(x02, y02));
__stfpd(q+6, __fpsub(x03, y03));
__stfpd(q+8, __fpsub(x04, y04));
__stfpd(q+10, __fpsub(x05, y05));
__stfpd(q+12, __fpsub(x06, y06));
__stfpd(q+14, __fpsub(x07, y07));
__stfpd(q+16, __fpsub(x08, y08));
__stfpd(q+18, __fpsub(x09, y09));
__stfpd(q+20, __fpsub(x10, y10));
__stfpd(q+22, __fpsub(x11, y11));
return;
}
#elif ((defined _STD_C99_COMPLEX_CHECKED) && (!defined apenext))
void diff(spinor * const Q,spinor * const R,spinor * const S, const int N){
register int ix=0;
register spinor *qPointer,*rPointer,*sPointer;
qPointer = Q;
rPointer = R;
sPointer = S;
do {
register spinor q,r,s;
ix+=1;
/* Change due to even-odd preconditioning : VOLUME to VOLUME/2 */
q = *(qPointer);
r = *(rPointer);
s = *(sPointer);
q.s0.c0 = r.s0.c0 - s.s0.c0;
q.s0.c1 = r.s0.c1 - s.s0.c1;
q.s0.c2 = r.s0.c2 - s.s0.c2;
q.s1.c0 = r.s1.c0 - s.s1.c0;
q.s1.c1 = r.s1.c1 - s.s1.c1;
q.s1.c2 = r.s1.c2 - s.s1.c2;
q.s2.c0 = r.s2.c0 - s.s2.c0;
q.s2.c1 = r.s2.c1 - s.s2.c1;
q.s2.c2 = r.s2.c2 - s.s2.c2;
q.s3.c0 = r.s3.c0 - s.s3.c0;
q.s3.c1 = r.s3.c1 - s.s3.c1;
q.s3.c2 = r.s3.c2 - s.s3.c2;
qPointer+=1;
rPointer+=1;
sPointer+=1;
} while (ix<N);
}
#elif defined apenext
#define NOWHERE_COND(condition) ((condition) ? 0x0 : NOWHERE )
void diff(spinor * const Q,spinor * const R,spinor * const S, const int N){
register int ix=N;
register spinor *qPointer,*rPointer,*sPointer;
qPointer = Q;
rPointer = R;
sPointer = S;
prefetch (*(rPointer));
prefetch (*(sPointer));
{
#pragma cache
do {
register spinor q,r,s;
ix-=1;
rPointer+=1;
sPointer+=1;
fetch(r);
fetch(s);
prefetch (*(rPointer+NOWHERE_COND(ix)));
prefetch (*(sPointer+NOWHERE_COND(ix)));
q.s0.c0 = r.s0.c0 - s.s0.c0;
q.s0.c1 = r.s0.c1 - s.s0.c1;
q.s0.c2 = r.s0.c2 - s.s0.c2;
q.s1.c0 = r.s1.c0 - s.s1.c0;
q.s1.c1 = r.s1.c1 - s.s1.c1;
q.s1.c2 = r.s1.c2 - s.s1.c2;
q.s2.c0 = r.s2.c0 - s.s2.c0;
q.s2.c1 = r.s2.c1 - s.s2.c1;
q.s2.c2 = r.s2.c2 - s.s2.c2;
q.s3.c0 = r.s3.c0 - s.s3.c0;
q.s3.c1 = r.s3.c1 - s.s3.c1;
q.s3.c2 = r.s3.c2 - s.s3.c2;
*(qPointer) = q;
qPointer+=1;
} while (ix>0);
}
}
#endif