added a better optimized sgemv_n kernel for bulldozer and piledriver
This commit is contained in:
wernsaar
parent
793175be3a
commit
db6917303f
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@ -2,7 +2,7 @@ ifdef OS_WINDOWS
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SGEMVNKERNEL = ../arm/gemv_n.c
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SGEMVTKERNEL = ../arm/gemv_t.c
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else
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SGEMVNKERNEL = sgemv_n_avx.c
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SGEMVNKERNEL = sgemv_n.c
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SGEMVTKERNEL = sgemv_t_avx.c
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endif
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@ -2,7 +2,7 @@ ifdef OS_WINDOWS
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SGEMVNKERNEL = ../arm/gemv_n.c
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SGEMVTKERNEL = ../arm/gemv_t.c
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else
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SGEMVNKERNEL = sgemv_n_avx.c
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SGEMVNKERNEL = sgemv_n.c
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SGEMVTKERNEL = sgemv_t_avx.c
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endif
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@ -0,0 +1,203 @@
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/***************************************************************************
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Copyright (c) 2014, The OpenBLAS Project
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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3. Neither the name of the OpenBLAS project nor the names of
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its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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#include "common.h"
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#if defined(BULLDOZER) || defined(PILEDRIVER)
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#include "sgemv_n_microk_bulldozer-2.c"
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#endif
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#define NBMAX 4096
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#ifndef HAVE_KERNEL_16x4
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static void sgemv_kernel_16x4(BLASLONG n, FLOAT **ap, FLOAT *x, FLOAT *y)
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{
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int i;
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float *a0,*a1,*a2,*a3;
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a0 = ap[0];
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a1 = ap[1];
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a2 = ap[2];
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a3 = ap[3];
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for ( i=0; i< n; i+=4 )
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{
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y[i] += a0[i]*x[0] + a1[i]*x[1] + a2[i]*x[2] + a3[i]*x[3];
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y[i+1] += a0[i+1]*x[0] + a1[i+1]*x[1] + a2[i+1]*x[2] + a3[i+1]*x[3];
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y[i+2] += a0[i+2]*x[0] + a1[i+2]*x[1] + a2[i+2]*x[2] + a3[i+2]*x[3];
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y[i+3] += a0[i+3]*x[0] + a1[i+3]*x[1] + a2[i+3]*x[2] + a3[i+3]*x[3];
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}
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}
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#endif
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static void sgemv_kernel_16x1(BLASLONG n, FLOAT *ap, FLOAT *x, FLOAT *y)
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{
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int i;
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float *a0;
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a0 = ap;
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for ( i=0; i< n; i+=4 )
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{
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y[i] += a0[i]*x[0];
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y[i+1] += a0[i+1]*x[0];
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y[i+2] += a0[i+2]*x[0];
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y[i+3] += a0[i+3]*x[0];
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}
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}
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static void zero_y(BLASLONG n, FLOAT *dest)
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{
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BLASLONG i;
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for ( i=0; i<n; i++ )
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{
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*dest = 0.0;
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dest++;
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}
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}
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static void add_y(BLASLONG n, FLOAT *src, FLOAT *dest, BLASLONG inc_dest)
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{
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BLASLONG i;
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if ( inc_dest == 1 )
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{
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for ( i=0; i<n; i+=4 )
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{
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dest[i] += src[i];
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dest[i+1] += src[i+1];
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dest[i+2] += src[i+2];
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dest[i+3] += src[i+3];
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}
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}
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else
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{
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for ( i=0; i<n; i++ )
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{
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*dest += *src;
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src++;
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dest += inc_dest;
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}
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}
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}
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int CNAME(BLASLONG m, BLASLONG n, BLASLONG dummy1, FLOAT alpha, FLOAT *a, BLASLONG lda, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y, FLOAT *buffer)
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{
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BLASLONG i;
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BLASLONG j;
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FLOAT *a_ptr;
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FLOAT *x_ptr;
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FLOAT *y_ptr;
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FLOAT *ap[4];
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BLASLONG n1;
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BLASLONG m1;
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BLASLONG m2;
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BLASLONG n2;
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FLOAT xbuffer[4],*ybuffer;
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ybuffer = buffer;
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n1 = n / 4 ;
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n2 = n % 4 ;
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m1 = m - ( m % 16 );
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m2 = (m % NBMAX) - (m % 16) ;
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y_ptr = y;
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BLASLONG NB = NBMAX;
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while ( NB == NBMAX )
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{
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m1 -= NB;
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if ( m1 < 0)
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{
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if ( m2 == 0 ) break;
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NB = m2;
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}
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a_ptr = a;
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x_ptr = x;
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zero_y(NB,ybuffer);
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for( i = 0; i < n1 ; i++)
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{
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xbuffer[0] = alpha * x_ptr[0];
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x_ptr += inc_x;
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xbuffer[1] = alpha * x_ptr[0];
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x_ptr += inc_x;
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xbuffer[2] = alpha * x_ptr[0];
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x_ptr += inc_x;
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xbuffer[3] = alpha * x_ptr[0];
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x_ptr += inc_x;
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ap[0] = a_ptr;
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ap[1] = a_ptr + lda;
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ap[2] = ap[1] + lda;
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ap[3] = ap[2] + lda;
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sgemv_kernel_16x4(NB,ap,xbuffer,ybuffer);
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a_ptr += 4 * lda;
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}
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for( i = 0; i < n2 ; i++)
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{
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xbuffer[0] = alpha * x_ptr[0];
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x_ptr += inc_x;
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sgemv_kernel_16x1(NB,a_ptr,xbuffer,ybuffer);
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a_ptr += 1 * lda;
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}
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add_y(NB,ybuffer,y_ptr,inc_y);
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a += NB;
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y_ptr += NB * inc_y;
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}
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j=0;
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while ( j < (m % 16))
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{
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a_ptr = a;
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x_ptr = x;
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FLOAT temp = 0.0;
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for( i = 0; i < n; i++ )
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{
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temp += a_ptr[0] * x_ptr[0];
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a_ptr += lda;
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x_ptr += inc_x;
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}
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y_ptr[0] += alpha * temp;
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y_ptr += inc_y;
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a++;
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j++;
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}
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return(0);
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}
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@ -0,0 +1,99 @@
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/***************************************************************************
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Copyright (c) 2014, The OpenBLAS Project
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
|
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the documentation and/or other materials provided with the
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distribution.
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3. Neither the name of the OpenBLAS project nor the names of
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its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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#define HAVE_KERNEL_16x4 1
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static void sgemv_kernel_16x4( long n, float **ap, float *x, float *y) __attribute__ ((noinline));
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static void sgemv_kernel_16x4( long n, float **ap, float *x, float *y)
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{
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long register i = 0;
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__asm__ __volatile__
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(
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"vbroadcastss (%2), %%xmm12 \n\t" // x0
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"vbroadcastss 4(%2), %%xmm13 \n\t" // x1
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"vbroadcastss 8(%2), %%xmm14 \n\t" // x2
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"vbroadcastss 12(%2), %%xmm15 \n\t" // x3
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".align 16 \n\t"
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".L01LOOP%=: \n\t"
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"vmovups (%3,%0,4), %%xmm4 \n\t" // 4 * y
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"vmovups 16(%3,%0,4), %%xmm5 \n\t" // 4 * y
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"vmovups 32(%3,%0,4), %%xmm6 \n\t" // 4 * y
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"vmovups 48(%3,%0,4), %%xmm7 \n\t" // 4 * y
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"prefetcht0 192(%4,%0,4) \n\t"
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"vfmaddps %%xmm4, (%4,%0,4), %%xmm12, %%xmm4 \n\t"
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"vfmaddps %%xmm5, 16(%4,%0,4), %%xmm12, %%xmm5 \n\t"
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"vfmaddps %%xmm6, 32(%4,%0,4), %%xmm12, %%xmm6 \n\t"
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"vfmaddps %%xmm7, 48(%4,%0,4), %%xmm12, %%xmm7 \n\t"
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"prefetcht0 192(%5,%0,4) \n\t"
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"vfmaddps %%xmm4, (%5,%0,4), %%xmm13, %%xmm4 \n\t"
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"vfmaddps %%xmm5, 16(%5,%0,4), %%xmm13, %%xmm5 \n\t"
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"vfmaddps %%xmm6, 32(%5,%0,4), %%xmm13, %%xmm6 \n\t"
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"vfmaddps %%xmm7, 48(%5,%0,4), %%xmm13, %%xmm7 \n\t"
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"prefetcht0 192(%6,%0,4) \n\t"
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"vfmaddps %%xmm4, (%6,%0,4), %%xmm14, %%xmm4 \n\t"
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"vfmaddps %%xmm5, 16(%6,%0,4), %%xmm14, %%xmm5 \n\t"
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"vfmaddps %%xmm6, 32(%6,%0,4), %%xmm14, %%xmm6 \n\t"
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"vfmaddps %%xmm7, 48(%6,%0,4), %%xmm14, %%xmm7 \n\t"
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"prefetcht0 192(%7,%0,4) \n\t"
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"vfmaddps %%xmm4, (%7,%0,4), %%xmm15, %%xmm4 \n\t"
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"vfmaddps %%xmm5, 16(%7,%0,4), %%xmm15, %%xmm5 \n\t"
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"vfmaddps %%xmm6, 32(%7,%0,4), %%xmm15, %%xmm6 \n\t"
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"vfmaddps %%xmm7, 48(%7,%0,4), %%xmm15, %%xmm7 \n\t"
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"vmovups %%xmm4, (%3,%0,4) \n\t" // 4 * y
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"vmovups %%xmm5, 16(%3,%0,4) \n\t" // 4 * y
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"vmovups %%xmm6, 32(%3,%0,4) \n\t" // 4 * y
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"vmovups %%xmm7, 48(%3,%0,4) \n\t" // 4 * y
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"addq $16, %0 \n\t"
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"subq $16, %1 \n\t"
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"jnz .L01LOOP%= \n\t"
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:
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:
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"r" (i), // 0
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"r" (n), // 1
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"r" (x), // 2
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"r" (y), // 3
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"r" (ap[0]), // 4
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"r" (ap[1]), // 5
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"r" (ap[2]), // 6
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"r" (ap[3]) // 7
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: "cc",
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"%xmm4", "%xmm5",
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"%xmm6", "%xmm7",
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"%xmm12", "%xmm13", "%xmm14", "%xmm15",
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"memory"
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);
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}
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