122 lines
3.7 KiB
C
122 lines
3.7 KiB
C
/***************************************************************************
|
|
Copyright (c) 2017, The OpenBLAS Project
|
|
Copyright (c) 2022, Arm Ltd
|
|
All rights reserved.
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are
|
|
met:
|
|
1. Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
2. Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in
|
|
the documentation and/or other materials provided with the
|
|
distribution.
|
|
3. Neither the name of the OpenBLAS project nor the names of
|
|
its contributors may be used to endorse or promote products
|
|
derived from this software without specific prior written permission.
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
|
|
USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*****************************************************************************/
|
|
|
|
|
|
#include "common.h"
|
|
|
|
// Some compilers will report feature support for SVE without the appropriate
|
|
// header available
|
|
#ifdef HAVE_SVE
|
|
#if defined __has_include
|
|
#if __has_include(<arm_sve.h>) && __ARM_FEATURE_SVE
|
|
#define USE_SVE
|
|
#endif
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef USE_SVE
|
|
#include "dot_kernel_sve.c"
|
|
#endif
|
|
#include "dot_kernel_asimd.c"
|
|
|
|
#if defined(SMP)
|
|
extern int blas_level1_thread_with_return_value(int mode, BLASLONG m, BLASLONG n,
|
|
BLASLONG k, void *alpha, void *a, BLASLONG lda, void *b, BLASLONG ldb,
|
|
void *c, BLASLONG ldc, int (*function)(), int nthreads);
|
|
#endif
|
|
|
|
static RETURN_TYPE dot_compute(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
|
|
{
|
|
RETURN_TYPE dot = 0.0 ;
|
|
|
|
if ( n <= 0 ) return dot;
|
|
|
|
#ifdef USE_SVE
|
|
if (inc_x == 1 && inc_y == 1) {
|
|
return dot_kernel_sve(n, x, y);
|
|
}
|
|
#endif
|
|
|
|
return dot_kernel_asimd(n, x, inc_x, y, inc_y);
|
|
}
|
|
|
|
#if defined(SMP)
|
|
static int dot_thread_function(BLASLONG n, BLASLONG dummy0,
|
|
BLASLONG dummy1, FLOAT dummy2, FLOAT *x, BLASLONG inc_x, FLOAT *y,
|
|
BLASLONG inc_y, FLOAT *result, BLASLONG dummy3)
|
|
{
|
|
*(RETURN_TYPE *)result = dot_compute(n, x, inc_x, y, inc_y);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
RETURN_TYPE CNAME(BLASLONG n, FLOAT *x, BLASLONG inc_x, FLOAT *y, BLASLONG inc_y)
|
|
{
|
|
#if defined(SMP)
|
|
int nthreads;
|
|
FLOAT dummy_alpha;
|
|
#endif
|
|
RETURN_TYPE dot = 0.0;
|
|
|
|
#if defined(SMP)
|
|
if (inc_x == 0 || inc_y == 0 || n <= 10000)
|
|
nthreads = 1;
|
|
else
|
|
nthreads = num_cpu_avail(1);
|
|
|
|
if (nthreads == 1) {
|
|
dot = dot_compute(n, x, inc_x, y, inc_y);
|
|
} else {
|
|
int mode, i;
|
|
char result[MAX_CPU_NUMBER * sizeof(double) * 2];
|
|
RETURN_TYPE *ptr;
|
|
|
|
#if !defined(DOUBLE)
|
|
mode = BLAS_SINGLE | BLAS_REAL;
|
|
#else
|
|
mode = BLAS_DOUBLE | BLAS_REAL;
|
|
#endif
|
|
|
|
blas_level1_thread_with_return_value(mode, n, 0, 0, &dummy_alpha,
|
|
x, inc_x, y, inc_y, result, 0,
|
|
( void *)dot_thread_function, nthreads);
|
|
|
|
ptr = (RETURN_TYPE *)result;
|
|
for (i = 0; i < nthreads; i++) {
|
|
dot = dot + (*ptr);
|
|
ptr = (RETURN_TYPE *)(((char *)ptr) + sizeof(double) * 2);
|
|
}
|
|
}
|
|
#else
|
|
dot = dot_compute(n, x, inc_x, y, inc_y);
|
|
#endif
|
|
|
|
return dot;
|
|
}
|