Centre Blaise Pascal » HPL sur GPU

/* 

 * -- High Performance Computing Linpack Benchmark (HPL)                

 *    HPL - 2.0 - September 10, 2008                          

 *    Antoine P. Petitet                                                

 *    University of Tennessee, Knoxville                                

 *    Innovative Computing Laboratory                                 

 *    (C) Copyright 2000-2008 All Rights Reserved                       

 *                                                                      

 * -- Copyright notice and Licensing terms:                             

 *                                                                      

 * 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. All  advertising  materials  mentioning  features  or  use of this

 * software must display the following acknowledgement:                 

 * This  product  includes  software  developed  at  the  University  of

 * Tennessee, Knoxville, Innovative Computing Laboratory.             

 *                                                                      

 * 4. The name of the  University,  the name of the  Laboratory,  or the

 * names  of  its  contributors  may  not  be used to endorse or promote

 * products  derived   from   this  software  without  specific  written

 * permission.                                                          

 *                                                                      

 * -- Disclaimer:                                                       

 *                                                                      

 * 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 UNIVERSITY

 * OR  CONTRIBUTORS  BE  LIABLE FOR ANY  DIRECT,  INDIRECT,  INCIDENTAL,

 * SPECIAL,  EXEMPLARY,  OR  CONSEQUENTIAL DAMAGES  (INCLUDING,  BUT NOT

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 * 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 files

 */

#include "hpl.h"

#ifndef HPL_dger

#ifdef STDC_HEADERS

void HPL_dger

(

   const enum HPL_ORDER             ORDER,

   const int                        M,

   const int                        N,

   const double                     ALPHA,

   const double *                   X,

   const int                        INCX,

   double *                         Y,

   const int                        INCY,

   double *                         A,

   const int                        LDA

)

#else

void HPL_dger

( ORDER, M, N, ALPHA, X, INCX, Y, INCY, A, LDA )

   const enum HPL_ORDER             ORDER;

   const int                        M;

   const int                        N;

   const double                     ALPHA;

   const double *                   X;

   const int                        INCX;

   double *                         Y;

   const int                        INCY;

   double *                         A;

   const int                        LDA;

#endif

{

/* 

 * Purpose

 * =======

 *

 * HPL_dger performs the rank 1 operation

 *  

 *     A := alpha * x * y^T + A,

 *  

 * where alpha is a scalar,  x is an m-element vector, y is an n-element

 * vector and A is an m by n matrix.

 *

 * Arguments

 * =========

 *

 * ORDER   (local input)                 const enum HPL_ORDER

 *         On entry, ORDER  specifies the storage format of the operands

 *         as follows:                                                  

 *            ORDER = HplRowMajor,                                      

 *            ORDER = HplColumnMajor.                                   

 *

 * M       (local input)                 const int

 *         On entry,  M  specifies  the number of rows of  the matrix A.

 *         M must be at least zero.

 *

 * N       (local input)                 const int

 *         On entry, N  specifies the number of columns of the matrix A.

 *         N must be at least zero.

 *

 * ALPHA   (local input)                 const double

 *         On entry, ALPHA specifies the scalar alpha.   When  ALPHA  is

 *         supplied as zero then  X and Y  need not be set on input.

 *

 * X       (local input)                 const double *

 *         On entry,  X  is an incremented array of dimension  at  least

 *         ( 1 + ( m - 1 ) * abs( INCX ) )  that  contains the vector x.

 *

 * INCX    (local input)                 const int

 *         On entry, INCX specifies the increment for the elements of X.

 *         INCX must not be zero.

 *

 * Y       (local input)                 double *

 *         On entry,  Y  is an incremented array of dimension  at  least

 *         ( 1 + ( n - 1 ) * abs( INCY ) )  that  contains the vector y.

 *

 * INCY    (local input)                 const int

 *         On entry, INCY specifies the increment for the elements of Y.

 *         INCY must not be zero.

 *

 * A       (local input/output)          double *

 *         On entry,  A  points  to an array of size equal to or greater

 *         than LDA * n.  Before  entry, the leading m by n part  of the

 *         array  A  must contain the matrix coefficients. On exit, A is

 *         overwritten by the updated matrix.

 *

 * LDA     (local input)                 const int

 *         On entry,  LDA  specifies  the  leading  dimension  of  A  as

 *         declared  in  the  calling  (sub) program.  LDA  must  be  at

 *         least MAX(1,m).

 *

 * ---------------------------------------------------------------------

 */ 

#ifdef HPL_CALL_CBLAS

   cblas_dger( ORDER, M, N, ALPHA, X, INCX, Y, INCY, A, LDA );

#endif

#ifdef HPL_CALL_VSIPL

   register double           t0;

   int                       i, iaij, ix, iy, j, jaj, jx, jy;

   if( ( M == 0 ) || ( N == 0 ) || ( ALPHA == HPL_rzero ) ) return;

   if( ORDER == HplColumnMajor )

   {

      for( j = 0, jaj = 0, jy = 0; j < N; j++, jaj += LDA, jy += INCY )

      {

         t0 = ALPHA * Y[jy];

         for( i = 0, iaij = jaj, ix = 0; i < M; i++, iaij += 1, ix += INCX )

         { A[iaij] += X[ix] * t0; }

      }

   }

   else

   {

      for( j = 0, jaj = 0, jx = 0; j < M; j++, jaj += LDA, jx += INCX )

      {

         t0 = ALPHA * X[jx];

         for( i = 0, iaij = jaj, iy = 0; i < N; i++, iaij += 1, iy += INCY )

         { A[iaij] += Y[iy] * t0; }

      }

   }

#endif

#ifdef HPL_CALL_FBLAS

   double                    alpha = ALPHA;

#ifdef HPL_USE_F77_INTEGER_DEF

   const F77_INTEGER         F77M    = M,   F77N    = N,

                             F77lda  = LDA, F77incx = INCX, F77incy = INCY;

#else

#define F77M                 M

#define F77N                 N

#define F77lda               LDA

#define F77incx              INCX

#define F77incy              INCY

#endif

   if( ORDER == HplColumnMajor )

   {  F77dger( &F77M, &F77N, &alpha, X, &F77incx, Y, &F77incy, A, &F77lda ); }

   else

   {  F77dger( &F77N, &F77M, &alpha, Y, &F77incy, X, &F77incx, A, &F77lda ); }

#endif

#ifdef HPL_CALL_CUBLAS

   double                    alpha = ALPHA;

#define CUBLASM                 M

#define CUBLASN                 N

#define CUBLASlda               LDA

#define CUBLASincx              INCX

#define CUBLASincy              INCY

   if( ORDER == HplColumnMajor )

   {  

     CUBLAS_DGER( &CUBLASM, &CUBLASN, &alpha, 

                  X, &CUBLASincx, Y, &CUBLASincy, A, &CUBLASlda ); 

   }

   else

   {  

     CUBLAS_DGER( &CUBLASN, &CUBLASM, &alpha, 

                  Y, &CUBLASincy, X, &CUBLASincx, A, &CUBLASlda ); }

#endif

/*

 * End of HPL_dger

 */

}

#endif