295 lines
7.5 KiB
C
295 lines
7.5 KiB
C
/*********************************************************************/
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/* Copyright 2009, 2010 The University of Texas at Austin. */
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/* All rights reserved. */
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/* */
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/* Redistribution and use in source and binary forms, with or */
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/* without modification, are permitted provided that the following */
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/* conditions are met: */
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/* */
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/* 1. Redistributions of source code must retain the above */
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/* copyright notice, this list of conditions and the following */
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/* disclaimer. */
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/* */
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/* 2. Redistributions in binary form must reproduce the above */
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/* copyright notice, this list of conditions and the following */
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/* disclaimer in the documentation and/or other materials */
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/* provided with the distribution. */
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/* */
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/* THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY OF TEXAS AT */
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/* AUSTIN ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, */
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/* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */
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/* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */
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/* DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OF TEXAS AT */
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/* AUSTIN OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, */
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/* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES */
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/* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE */
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/* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR */
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/* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF */
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/* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
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/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT */
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/* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE */
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/* POSSIBILITY OF SUCH DAMAGE. */
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/* */
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/* The views and conclusions contained in the software and */
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/* documentation are those of the authors and should not be */
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/* interpreted as representing official policies, either expressed */
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/* or implied, of The University of Texas at Austin. */
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/*********************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include "common.h"
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#if !defined(CONJ) && !defined(XCONJ)
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#define MYAXPY AXPYU_K
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#define MYDOT DOTU_K
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#elif defined(CONJ) && !defined(XCONJ)
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#define MYAXPY AXPYC_K
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#define MYDOT DOTC_K
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#elif !defined(CONJ) && defined(XCONJ)
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#define MYAXPY AXPYU_K
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#define MYDOT DOTC_K
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#else
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#define MYAXPY AXPYC_K
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#define MYDOT DOTU_K
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#endif
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static int gbmv_kernel(blas_arg_t *args, BLASLONG *range_m, BLASLONG *range_n, FLOAT *dummy1, FLOAT *buffer, BLASLONG pos){
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FLOAT *a, *x, *y;
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BLASLONG lda, incx;
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BLASLONG n_from, n_to;
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BLASLONG i, offset_l, offset_u, uu, ll, ku, kl;
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#ifdef TRANSA
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#ifndef COMPLEX
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FLOAT result;
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#else
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FLOAT _Complex result;
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#endif
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#endif
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a = (FLOAT *)args -> a;
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x = (FLOAT *)args -> b;
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y = (FLOAT *)args -> c;
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lda = args -> lda;
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incx = args -> ldb;
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ku = args -> ldc;
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kl = args -> ldd;
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n_from = 0;
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n_to = args -> n;
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if (range_m) y += *range_m * COMPSIZE;
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if (range_n) {
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n_from = *(range_n + 0);
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n_to = *(range_n + 1);
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a += n_from * lda * COMPSIZE;
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}
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n_to = MIN(n_to, args -> m + ku);
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#ifdef TRANSA
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if (incx != 1) {
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COPY_K(args -> m, x, incx, buffer, 1);
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x = buffer;
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buffer += ((COMPSIZE * args -> m + 1023) & ~1023);
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}
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#endif
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SCAL_K(
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#ifndef TRANSA
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args -> m,
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#else
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args -> n,
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#endif
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0, 0, ZERO,
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#ifdef COMPLEX
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ZERO,
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#endif
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y, 1, NULL, 0, NULL, 0);
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offset_u = ku - n_from;
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offset_l = ku - n_from + args -> m;
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#ifndef TRANSA
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x += n_from * incx * COMPSIZE;
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y -= offset_u * COMPSIZE;
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#else
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x -= offset_u * COMPSIZE;
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y += n_from * COMPSIZE;
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#endif
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for (i = n_from; i < n_to; i++) {
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uu = MAX(offset_u, 0);
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ll = MIN(offset_l, ku + kl + 1);
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#ifndef TRANSA
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MYAXPY(ll - uu, 0, 0,
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*(x + 0),
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#ifdef COMPLEX
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#ifndef XCONJ
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*(x + 1),
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#else
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-*(x + 1),
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#endif
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#endif
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a + uu * COMPSIZE, 1, y + uu * COMPSIZE, 1, NULL, 0);
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x += incx * COMPSIZE;
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#else
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result = MYDOT(ll - uu, a + uu * COMPSIZE, 1, x + uu * COMPSIZE, 1);
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#ifndef COMPLEX
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*y = result;
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#else
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*(y + 0) += CREAL(result);
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#ifndef XCONJ
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*(y + 1) += CIMAG(result);
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#else
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*(y + 1) -= CIMAG(result);
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#endif
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#endif
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x += COMPSIZE;
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#endif
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y += COMPSIZE;
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offset_u --;
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offset_l --;
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a += lda * COMPSIZE;
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}
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return 0;
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}
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#ifndef COMPLEX
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int CNAME(BLASLONG m, BLASLONG n, BLASLONG ku, BLASLONG kl, FLOAT alpha, FLOAT *a, BLASLONG lda, FLOAT *x, BLASLONG incx, FLOAT *y, BLASLONG incy, FLOAT *buffer, int nthreads){
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#else
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int CNAME(BLASLONG m, BLASLONG n, BLASLONG ku, BLASLONG kl, FLOAT *alpha, FLOAT *a, BLASLONG lda, FLOAT *x, BLASLONG incx, FLOAT *y, BLASLONG incy, FLOAT *buffer, int nthreads){
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#endif
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blas_arg_t args;
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blas_queue_t queue[MAX_CPU_NUMBER];
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BLASLONG range_m[MAX_CPU_NUMBER];
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BLASLONG range_n[MAX_CPU_NUMBER + 1];
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BLASLONG width, i, num_cpu;
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#ifdef SMP
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#ifndef COMPLEX
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#ifdef XDOUBLE
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int mode = BLAS_XDOUBLE | BLAS_REAL;
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#elif defined(DOUBLE)
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int mode = BLAS_DOUBLE | BLAS_REAL;
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#else
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int mode = BLAS_SINGLE | BLAS_REAL;
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#endif
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#else
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#ifdef XDOUBLE
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int mode = BLAS_XDOUBLE | BLAS_COMPLEX;
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#elif defined(DOUBLE)
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int mode = BLAS_DOUBLE | BLAS_COMPLEX;
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#else
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int mode = BLAS_SINGLE | BLAS_COMPLEX;
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#endif
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#endif
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#endif
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args.m = m;
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args.n = n;
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args.a = (void *)a;
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args.b = (void *)x;
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args.c = (void *)buffer;
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args.lda = lda;
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args.ldb = incx;
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args.ldc = ku;
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args.ldd = kl;
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num_cpu = 0;
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range_n[0] = 0;
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i = n;
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while (i > 0){
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width = blas_quickdivide(i + nthreads - num_cpu - 1, nthreads - num_cpu);
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if (width < 4) width = 4;
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if (i < width) width = i;
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range_n[num_cpu + 1] = range_n[num_cpu] + width;
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#ifndef TRANSA
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range_m[num_cpu] = num_cpu * ((m + 15) & ~15);
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#else
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range_m[num_cpu] = num_cpu * ((n + 15) & ~15);
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#endif
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queue[num_cpu].mode = mode;
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queue[num_cpu].routine = gbmv_kernel;
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queue[num_cpu].args = &args;
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queue[num_cpu].range_m = &range_m[num_cpu];
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queue[num_cpu].range_n = &range_n[num_cpu];
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queue[num_cpu].sa = NULL;
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queue[num_cpu].sb = NULL;
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queue[num_cpu].next = &queue[num_cpu + 1];
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num_cpu ++;
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i -= width;
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}
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if (num_cpu) {
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queue[0].sa = NULL;
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#ifndef TRANSA
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queue[0].sb = buffer + num_cpu * (((m + 255) & ~255) + 16) * COMPSIZE;
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#else
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queue[0].sb = buffer + num_cpu * (((n + 255) & ~255) + 16) * COMPSIZE;
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#endif
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queue[num_cpu - 1].next = NULL;
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exec_blas(num_cpu, queue);
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}
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for (i = 1; i < num_cpu; i ++) {
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AXPYU_K(
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#ifndef TRANSA
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m,
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#else
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n,
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#endif
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0, 0,
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#ifndef COMPLEX
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ONE,
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#else
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ONE, ZERO,
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#endif
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buffer + range_m[i] * COMPSIZE, 1, buffer, 1, NULL, 0);
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}
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AXPYU_K(
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#ifndef TRANSA
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m,
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#else
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n,
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#endif
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0, 0,
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#ifndef COMPLEX
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alpha,
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#else
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alpha[0], alpha[1],
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#endif
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buffer, 1, y, incy, NULL, 0);
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return 0;
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}
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