/root/doris/contrib/openblas/interface/swap.c

Source
/*********************************************************************/
/* Copyright 2009, 2010 The University of Texas at Austin.           */
/* 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.                              */
/*                                                                   */
/*    THIS  SOFTWARE IS PROVIDED  BY THE  UNIVERSITY OF  TEXAS AT    */
/*    AUSTIN  ``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 UNIVERSITY  OF TEXAS AT    */
/*    AUSTIN 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.                                    */
/*                                                                   */
/* The views and conclusions contained in the software and           */
/* documentation are those of the authors and should not be          */
/* interpreted as representing official policies, either expressed   */
/* or implied, of The University of Texas at Austin.                 */
/*********************************************************************/

#include <stdio.h>
#include "common.h"
#ifdef FUNCTION_PROFILE
#include "functable.h"
#endif

#if defined(THUNDERX2T99) || defined(VULCAN) || defined(ARMV8) || defined(THUNDERX3T110)
// Multithreaded swap gives performance benefits in ThunderX2T99
#else
// Disable multi-threading as it does not show any performance
// benefits. Keep the multi-threading code for the record.
#undef SMP
#endif

#ifndef CBLAS

void NAME(blasint *N, FLOAT *x, blasint *INCX, FLOAT *y, blasint *INCY){

  blasint n    = *N;
  blasint incx = *INCX;
  blasint incy = *INCY;

#else

void CNAME(blasint n, FLOAT *x, blasint incx, FLOAT *y, blasint incy){

#endif

#ifdef SMP
  int mode, nthreads;
  FLOAT dummyalpha[2] = {ZERO, ZERO};
#endif

#ifndef CBLAS
  PRINT_DEBUG_NAME;
#else
  PRINT_DEBUG_CNAME;
#endif

  if (n <= 0) return;

  IDEBUG_START;

  FUNCTION_PROFILE_START();

  if (incx < 0) x -= (n - 1) * incx;
  if (incy < 0) y -= (n - 1) * incy;

#ifdef SMP
  //disable multi-thread when incx==0 or incy==0
  //In that case, the threads would be dependent.
  if (incx == 0 || incy == 0 || n < 2097152 * GEMM_MULTITHREAD_THRESHOLD / sizeof(FLOAT))
    nthreads = 1;
  else
    nthreads = num_cpu_avail(1);

  if (nthreads == 1) {
#endif

    SWAP_K(n, 0, 0, ZERO, x, incx, y, incy, NULL, 0);

#ifdef SMP
  } else {

#ifdef XDOUBLE
    mode  =  BLAS_XDOUBLE | BLAS_REAL;
#elif defined(DOUBLE)
    mode  =  BLAS_DOUBLE  | BLAS_REAL;
#else
    mode  =  BLAS_SINGLE  | BLAS_REAL;
#endif

    blas_level1_thread(mode, n, 0, 0, dummyalpha,
           x, incx, y, incy, NULL, 0, (void *)SWAP_K, nthreads);
  }

#endif

  FUNCTION_PROFILE_END(1, 2 * n, 0);

  IDEBUG_END;

  return;

}

Line	Count	Source
1		/*********************************************************************/
2		/* Copyright 2009, 2010 The University of Texas at Austin. */
3		/* All rights reserved. */
4		/* */
5		/* Redistribution and use in source and binary forms, with or */
6		/* without modification, are permitted provided that the following */
7		/* conditions are met: */
8		/* */
9		/* 1. Redistributions of source code must retain the above */
10		/* copyright notice, this list of conditions and the following */
11		/* disclaimer. */
12		/* */
13		/* 2. Redistributions in binary form must reproduce the above */
14		/* copyright notice, this list of conditions and the following */
15		/* disclaimer in the documentation and/or other materials */
16		/* provided with the distribution. */
17		/* */
18		/* THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY OF TEXAS AT */
19		/* AUSTIN ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, */
20		/* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */
21		/* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */
22		/* DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OF TEXAS AT */
23		/* AUSTIN OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, */
24		/* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES */
25		/* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE */
26		/* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR */
27		/* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF */
28		/* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
29		/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT */
30		/* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE */
31		/* POSSIBILITY OF SUCH DAMAGE. */
32		/* */
33		/* The views and conclusions contained in the software and */
34		/* documentation are those of the authors and should not be */
35		/* interpreted as representing official policies, either expressed */
36		/* or implied, of The University of Texas at Austin. */
37		/*********************************************************************/
38
39		#include <stdio.h>
40		#include "common.h"
41		#ifdef FUNCTION_PROFILE
42		#include "functable.h"
43		#endif
44
45		#if defined(THUNDERX2T99) \|\| defined(VULCAN) \|\| defined(ARMV8) \|\| defined(THUNDERX3T110)
46		// Multithreaded swap gives performance benefits in ThunderX2T99
47		#else
48		// Disable multi-threading as it does not show any performance
49		// benefits. Keep the multi-threading code for the record.
50		#undef SMP
51		#endif
52
53		#ifndef CBLAS
54
55	0	void NAME(blasint N, FLOAT x, blasint INCX, FLOAT y, blasint *INCY){
56
57	0	blasint n = *N;
58	0	blasint incx = *INCX;
59	0	blasint incy = *INCY;
60
61		#else
62
63		void CNAME(blasint n, FLOAT x, blasint incx, FLOAT y, blasint incy){
64
65		#endif
66
67		#ifdef SMP
68		int mode, nthreads;
69		FLOAT dummyalpha[2] = {ZERO, ZERO};
70		#endif
71
72	0	#ifndef CBLAS
73	0	PRINT_DEBUG_NAME;
74		#else
75		PRINT_DEBUG_CNAME;
76		#endif
77
78	0	if (n <= 0) return;
79
80	0	IDEBUG_START;
81
82	0	FUNCTION_PROFILE_START();
83
84	0	if (incx < 0) x -= (n - 1) * incx;
85	0	if (incy < 0) y -= (n - 1) * incy;
86
87		#ifdef SMP
88		//disable multi-thread when incx==0 or incy==0
89		//In that case, the threads would be dependent.
90		if (incx == 0 \|\| incy == 0 \|\| n < 2097152 * GEMM_MULTITHREAD_THRESHOLD / sizeof(FLOAT))
91		nthreads = 1;
92		else
93		nthreads = num_cpu_avail(1);
94
95		if (nthreads == 1) {
96		#endif
97
98	0	SWAP_K(n, 0, 0, ZERO, x, incx, y, incy, NULL, 0);
99
100		#ifdef SMP
101		} else {
102
103		#ifdef XDOUBLE
104		mode = BLAS_XDOUBLE \| BLAS_REAL;
105		#elif defined(DOUBLE)
106		mode = BLAS_DOUBLE \| BLAS_REAL;
107		#else
108		mode = BLAS_SINGLE \| BLAS_REAL;
109		#endif
110
111		blas_level1_thread(mode, n, 0, 0, dummyalpha,
112		x, incx, y, incy, NULL, 0, (void *)SWAP_K, nthreads);
113		}
114
115		#endif
116
117	0	FUNCTION_PROFILE_END(1, 2 * n, 0);
118
119	0	IDEBUG_END;
120
121	0	return;
122
123	0	} Unexecuted instantiation: sswap_ Unexecuted instantiation: dswap_

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Created: 2025-08-27 05:46