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"

#ifdef STDC_HEADERS

void HPL_pdlaprnt

(

   const HPL_T_grid *               GRID,

   const int                        M,

   const int                        N,

   const int                        NB,

   double *                         A,

   const int                        LDA,

   const int                        IAROW,

   const int                        IACOL,

   const char *                     CMATNM

)

#else

void HPL_pdlaprnt

( GRID, M, N, NB, A, LDA, IAROW, IACOL, CMATNM )

   const HPL_T_grid *               GRID;

   const int                        M;

   const int                        N;

   const int                        NB;

   double *                         A;

   const int                        LDA;

   const int                        IAROW;

   const int                        IACOL;

   const char *                     CMATNM;

#endif

{

/* 

 * Purpose

 * =======

 *

 * HPL_pdlaprnt prints  to  standard  error a distributed matrix A. The

 * local pieces of  A  are sent to the process of coordinates  (0,0)  in

 * the grid and then printed.

 *

 * Arguments

 * =========

 *

 * GRID    (local input)                 const HPL_T_grid *

 *         On entry,  GRID  points  to the data structure containing the

 *         process grid information.

 *

 * M       (global input)                const int

 *         On entry,  M  specifies the number of rows of the coefficient

 *         matrix A. M must be at least zero.

 *

 * N       (global input)                const int

 *         On  entry,   N   specifies  the  number  of  columns  of  the

 *         coefficient matrix A. N must be at least zero.

 *

 * NB      (global input)                const int

 *         On entry,  NB specifies the blocking factor used to partition

 *         and distribute the matrix. NB must be larger than one.

 *

 * A       (local input)                 double *

 *         On entry,  A  points to an  array of dimension (LDA,LocQ(N)).

 *         This array contains the coefficient matrix to be printed.

 *

 * LDA     (local input)                 const int

 *         On entry, LDA specifies the leading dimension of the array A.

 *         LDA must be at least max(1,LocP(M)).

 *

 * IAROW   (global input)                const int

 *         On entry,  IAROW  specifies the row process coordinate owning

 *         the  first row of A.  IAROW  must be  larger than or equal to

 *         zero and less than NPROW.

 *

 * IACOL   (global input)                const int

 *         On entry,  IACOL  specifies  the  column  process  coordinate

 *         owning the  first column  of A. IACOL  must be larger than or

 *         equal to zero and less than NPCOL.

 *

 * CMATNM  (global input)                const char *

 *         On entry, CMATNM is the name of the matrix to be printed.

 *

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

 */ 

/*

 * .. Local Variables ..

 */

   MPI_Comm                   Acomm;

   double                     * buf = NULL;

   int                        h, i, ib, icurcol=IACOL, icurrow=IAROW,

                              ii=0, j, jb, jj=0, mycol, myrow, npcol,

                              nprow, src;

/* ..

 * .. Executable Statements ..

 */

   (void) HPL_grid_info( GRID, &nprow, &npcol, &myrow, &mycol );

   Acomm = GRID->all_comm; 

   if( ( myrow == 0 ) && ( mycol == 0 ) )

      buf = (double*)malloc( (size_t)(NB) * sizeof( double ) );

   for( j = 0; j < N; j += NB )

   {

      jb = N-j; jb = Mmin( jb, NB );

      for( h = 0; h < jb; h++ )

      {

         (void) HPL_barrier( Acomm );

         for( i = 0; i < M; i += NB )

         {

            ib = M-i; ib = Mmin( ib, NB );

            if( ( icurrow == 0 ) && ( icurcol == 0 ) )

            {

               if( ( myrow == 0 ) && ( mycol == 0 ) )

                  HPL_dlaprnt( ib, 1, Mptr( A, ii, jj+h, LDA ), i+1,

                               j+h+1, LDA, CMATNM );

            }

            else

            {

               if( ( myrow == icurrow ) && ( mycol == icurcol ) )

               {

                  (void) HPL_send( Mptr( A, ii, jj+h, LDA ), ib, 0,

                                   9000+(j+h)*M+i, Acomm );

               }

               else if( ( myrow == 0 ) && ( mycol == 0 ) )

               {

                  src = HPL_pnum( GRID, icurrow, icurcol );

                  (void) HPL_recv( buf, ib, src, 9000+(j+h)*M+i,

                                   Acomm );

                  HPL_dlaprnt( ib, 1, buf, i+1, j+h+1, NB, CMATNM );

               }

            }

            if( myrow == icurrow ) ii += ib;

            icurrow = MModAdd1( icurrow, nprow );

            (void) HPL_barrier( Acomm );

         }

         ii = 0; icurrow = IAROW;

      }

      if( mycol == icurcol ) jj += jb;

      icurcol = MModAdd1( icurcol, npcol );

      (void) HPL_barrier( Acomm );

   }

   if( ( myrow == 0 ) && ( mycol == 0 ) && ( buf ) ) free( buf );

/*

 * End of HPL_pdlaprnt

 */

}