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/*
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* -- High Performance Computing Linpack Benchmark (HPL)
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* HPL - 2.0 - September 10, 2008
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* Antoine P. Petitet
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* University of Tennessee, Knoxville
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* Innovative Computing Laboratory
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* (C) Copyright 2000-2008 All Rights Reserved
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*
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* -- Copyright notice and Licensing terms:
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*
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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
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* are met:
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*
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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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*
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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 the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgement:
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* This product includes software developed at the University of
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* Tennessee, Knoxville, Innovative Computing Laboratory.
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*
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* 4. The name of the University, the name of the Laboratory, or the
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* names of its contributors may not be used to endorse or promote
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* products derived from this software without specific written
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* permission.
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*
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* -- Disclaimer:
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY
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* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* ---------------------------------------------------------------------
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*/
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/*
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* Include files
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*/
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#include "hpl.h" |
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#ifdef HPL_NO_MPI_DATATYPE /* The user insists to not use MPI types */ |
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#ifndef HPL_COPY_L /* and also want to avoid the copy of L ... */ |
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#define HPL_COPY_L /* well, sorry, can not do that: force the copy */ |
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#endif
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#endif
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#define I_SEND 0 |
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#define I_RECV 1 |
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#ifdef STDC_HEADERS
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int HPL_binit_blonM
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( |
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HPL_T_panel * PANEL |
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) |
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#else
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int HPL_binit_blonM( PANEL )
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HPL_T_panel * PANEL; |
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#endif
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{
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/* ..
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* .. Executable Statements ..
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*/
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if( PANEL == NULL ) { return( HPL_SUCCESS ); } |
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if( PANEL->grid->npcol <= 1 ) { return( HPL_SUCCESS ); } |
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#ifdef HPL_USE_MPI_DATATYPE
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#ifdef HPL_COPY_L
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/*
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* Copy the panel into a contiguous buffer
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*/
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HPL_copyL( PANEL ); |
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#endif
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#else
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/*
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* Force the copy of the panel into a contiguous buffer
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*/
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HPL_copyL( PANEL ); |
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#endif
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return( HPL_SUCCESS );
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} |
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#ifdef HPL_USE_MPI_DATATYPE
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#define _M_BUFF_S1 PANEL->buffers[I_SEND]
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#define _M_COUNT_S1 PANEL->counts[I_SEND]
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#define _M_TYPE_S1 PANEL->dtypes[I_SEND]
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#define _M_BUFF_S2 PANEL->buffers[I_SEND]
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#define _M_COUNT_S2 PANEL->counts[I_SEND]
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#define _M_TYPE_S2 PANEL->dtypes[I_SEND]
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#define _M_BUFF_R1 PANEL->buffers[I_RECV]
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#define _M_COUNT_R1 PANEL->counts[I_RECV]
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#define _M_TYPE_R1 PANEL->dtypes[I_RECV]
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#define _M_BUFF_R2 PANEL->buffers[I_RECV]
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#define _M_COUNT_R2 PANEL->counts[I_RECV]
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#define _M_TYPE_R2 PANEL->dtypes[I_RECV]
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#define _M_ROLL_BUFF_S PANEL->buffers[I_SEND]
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#define _M_ROLL_COUNT_S PANEL->counts[I_SEND]
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#define _M_ROLL_TYPE_S PANEL->dtypes[I_SEND]
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#define _M_ROLL_BUFF_R PANEL->buffers[I_RECV]
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#define _M_ROLL_COUNT_R PANEL->counts[I_RECV]
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#define _M_ROLL_TYPE_R PANEL->dtypes[I_RECV]
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#else
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#define _M_BUFF_S1 (void *)(PANEL->L2) |
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#define _M_COUNT_S1 PANEL->len
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#define _M_TYPE_S1 MPI_DOUBLE
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#define _M_BUFF_S2 (void *)(PANEL->L2 + ibuf) |
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#define _M_COUNT_S2 lbuf
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#define _M_TYPE_S2 MPI_DOUBLE
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#define _M_BUFF_R1 (void *)(PANEL->L2) |
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#define _M_COUNT_R1 PANEL->len
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#define _M_TYPE_R1 MPI_DOUBLE
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#define _M_BUFF_R2 (void *)(PANEL->L2 + ibuf) |
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#define _M_COUNT_R2 lbuf
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#define _M_TYPE_R2 MPI_DOUBLE
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#define _M_ROLL_BUFF_S (void *)(PANEL->L2 + ibufS) |
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#define _M_ROLL_COUNT_S lbufS
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#define _M_ROLL_TYPE_S MPI_DOUBLE
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#define _M_ROLL_BUFF_R (void *)(PANEL->L2 + ibufR) |
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#define _M_ROLL_COUNT_R lbufR
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#define _M_ROLL_TYPE_R MPI_DOUBLE
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#endif
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#ifdef STDC_HEADERS
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int HPL_bcast_blonM
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( |
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HPL_T_panel * PANEL, |
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int * IFLAG
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) |
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#else
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int HPL_bcast_blonM( PANEL, IFLAG )
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HPL_T_panel * PANEL; |
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int * IFLAG;
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#endif
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{
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/*
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* .. Local Variables ..
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*/
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MPI_Comm comm; |
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int COUNT, count, go=1, ierr=MPI_SUCCESS, ibuf, |
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ibufR, ibufS, dummy=0, indx, ip2=1, k, l, |
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lbuf, lbufR, lbufS, mask=1, msgid, mydist,
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mydist2, next, npm1, npm2, partner, prev, |
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rank, root, size; |
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/* ..
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* .. Executable Statements ..
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*/
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if( PANEL == NULL ) { *IFLAG = HPL_SUCCESS; return( HPL_SUCCESS ); } |
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if( ( size = PANEL->grid->npcol ) <= 1 ) |
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{ *IFLAG = HPL_SUCCESS; return( HPL_SUCCESS ); }
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/*
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* Cast phase: root process sends to its right neighbor, then spread
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* the panel on the other npcol - 2 processes. If I am not the root
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* process, probe for message received. If the message is there, then
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* receive it. If I am just after the root process, return. Otherwise,
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* keep spreading on those npcol - 2 processes. Otherwise, inform the
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* caller that the panel has still not been received.
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*/
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comm = PANEL->grid->row_comm; rank = PANEL->grid->mycol; |
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root = PANEL->pcol; msgid = PANEL->msgid; |
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prev = MModSub1( rank, size ); |
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if( rank == root )
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{
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#ifdef HPL_USE_MPI_DATATYPE
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if( ierr == MPI_SUCCESS )
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ierr = HPL_packL( PANEL, 0, PANEL->len, I_SEND );
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#endif
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if( ierr == MPI_SUCCESS )
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ierr = MPI_Ssend( _M_BUFF_S1, _M_COUNT_S1, _M_TYPE_S1, |
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MModAdd1( rank, size ), msgid, comm ); |
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#ifdef HPL_USE_MPI_DATATYPE
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if( ierr == MPI_SUCCESS )
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ierr = MPI_Type_free( &PANEL->dtypes[I_SEND] ); |
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#endif
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} |
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else if( prev == root ) |
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{
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/*
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* This probing mechanism causes problems when lookhead is on. Too many
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* messages are exchanged in this virtual topology causing a hang on
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* some machines. It is currently disabled until a better understanding
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* is acquired.
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*
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* ierr = MPI_Iprobe( root, msgid, comm, &go, &PANEL->status[0] );
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*/
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if( ierr == MPI_SUCCESS )
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{ /* if panel is here, proceed */
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if( go != 0 ) |
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{
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#ifdef HPL_USE_MPI_DATATYPE
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ierr = HPL_packL( PANEL, 0, PANEL->len, I_RECV );
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#endif
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if( ierr == MPI_SUCCESS )
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ierr = MPI_Recv( _M_BUFF_R1, _M_COUNT_R1, _M_TYPE_R1, |
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root, msgid, comm, &PANEL->status[0] );
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#ifdef HPL_USE_MPI_DATATYPE
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if( ierr == MPI_SUCCESS )
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ierr = MPI_Type_free( &PANEL->dtypes[I_RECV] ); |
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#endif
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} |
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else { *IFLAG = HPL_KEEP_TESTING; return( HPL_KEEP_TESTING ); } |
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} |
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} |
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/*
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* if I am just after the root, exit now. The message receive completed
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* successfully, this guy is done. If there are only 2 processes in each
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* row of processes, we are done as well.
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*/
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if( ( prev == root ) || ( size == 2 ) ) |
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{
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*IFLAG = ( ierr == MPI_SUCCESS ? HPL_SUCCESS : HPL_FAILURE ); |
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return( *IFLAG );
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} |
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/*
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* Otherwise, proceed with broadcast - Spread the panel across process
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* columns
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*/
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npm2 = ( npm1 = size - 1 ) - 1; COUNT = PANEL->len; |
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k = npm2; while( k > 1 ) { k >>= 1; ip2 <<= 1; mask <<= 1; mask++; } |
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if( rank == root ) mydist2 = ( mydist = 0 ); |
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else mydist2 = ( mydist = MModSub( rank, root, size ) - 1 ); |
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indx = ip2; count = COUNT / npm1; count = Mmax( count, 1 );
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do
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{
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mask ^= ip2; |
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if( ( mydist & mask ) == 0 ) |
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{
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lbuf = COUNT - ( ibuf = indx * count ); |
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if( indx + ip2 < npm1 ) { l = ip2 * count; lbuf = Mmin( lbuf, l ); }
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partner = mydist ^ ip2; |
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if( ( mydist & ip2 ) != 0 ) |
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{
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partner = MModAdd( root, partner, size ); |
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if( partner != root ) partner = MModAdd1( partner, size );
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/*
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* This probing mechanism causes problems when lookhead is on. Too many
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* messages are exchanged in this virtual topology causing a hang on
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* some machines. It is currently disabled until a better understanding
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* is acquired.
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*/
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#if 0
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ierr = MPI_Iprobe( partner, msgid, comm, &go, &PANEL->status[0] );
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if( ierr == MPI_SUCCESS )
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{ /* if panel is not here, return and keep testing */
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if( go == 0 )
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{ *IFLAG = HPL_KEEP_TESTING; return( HPL_KEEP_TESTING ); }
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}
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#endif
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if( lbuf > 0 ) |
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{
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#ifdef HPL_USE_MPI_DATATYPE
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if( ierr == MPI_SUCCESS )
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ierr = HPL_packL( PANEL, ibuf, lbuf, I_RECV ); |
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#endif
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if( ierr == MPI_SUCCESS )
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ierr = MPI_Recv( _M_BUFF_R2, _M_COUNT_R2, _M_TYPE_R2, |
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partner, msgid, comm, &PANEL->status[0] );
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#ifdef HPL_USE_MPI_DATATYPE
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if( ierr == MPI_SUCCESS )
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ierr = MPI_Type_free( &PANEL->dtypes[I_RECV] ); |
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#endif
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} |
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else /* Recv message of length zero to enable probe */ |
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{
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if( ierr == MPI_SUCCESS )
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ierr = MPI_Recv( (void *)(&dummy), 0, MPI_BYTE, partner, |
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msgid, comm, &PANEL->status[0] );
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} |
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} |
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else if( partner < npm1 ) |
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{
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partner = MModAdd( root, partner, size ); |
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if( partner != root ) partner = MModAdd1( partner, size );
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if( lbuf > 0 ) |
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{
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#ifdef HPL_USE_MPI_DATATYPE
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if( ierr == MPI_SUCCESS )
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ierr = HPL_packL( PANEL, ibuf, lbuf, I_SEND ); |
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#endif
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if( ierr == MPI_SUCCESS )
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ierr = MPI_Ssend( _M_BUFF_S2, _M_COUNT_S2, _M_TYPE_S2, |
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partner, msgid, comm ); |
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#ifdef HPL_USE_MPI_DATATYPE
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if( ierr == MPI_SUCCESS )
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ierr = MPI_Type_free( &PANEL->dtypes[I_SEND] ); |
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#endif
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} |
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else /* Recv message of length zero to enable probe */ |
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{
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if( ierr == MPI_SUCCESS )
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ierr = MPI_Ssend( (void *)(&dummy), 0, MPI_BYTE, |
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partner, msgid, comm ); |
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} |
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} |
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} |
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if( mydist2 < ip2 ) { ip2 >>= 1; indx -= ip2; } |
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else { mydist2 -= ip2; ip2 >>= 1; indx += ip2; } |
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} while( ip2 > 0 ); |
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/*
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* Roll the pieces
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*/
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prev = MModSub1( rank, size ); |
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if( MModSub1( prev, size ) == root ) prev = root;
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next = MModAdd1( rank, size ); |
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if( rank == root ) next = MModAdd1( next, size );
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for( k = 0; k < npm2; k++ ) |
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{
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l = ( k >> 1 );
|
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/*
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* Who is sending to who and how much
|
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*/
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if( ( ( mydist + k ) & 1 ) != 0 ) |
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{
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ibufS = ( indx = MModAdd( mydist, l, npm1 ) ) * count; |
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lbufS = ( indx == npm2 ? COUNT : ibufS + count ); |
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lbufS = Mmin( COUNT, lbufS ) - ibufS; lbufS = Mmax( 0, lbufS );
|
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|
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ibufR = ( indx = MModSub( mydist, l+1, npm1 ) ) * count;
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lbufR = ( indx == npm2 ? COUNT : ibufR + count ); |
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lbufR = Mmin( COUNT, lbufR ) - ibufR; lbufR = Mmax( 0, lbufR );
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|
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partner = prev; |
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} |
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else
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{
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ibufS = ( indx = MModSub( mydist, l, npm1 ) ) * count; |
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lbufS = ( indx == npm2 ? COUNT : ibufS + count ); |
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lbufS = Mmin( COUNT, lbufS ) - ibufS; lbufS = Mmax( 0, lbufS );
|
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|
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ibufR = ( indx = MModAdd( mydist, l+1, npm1 ) ) * count;
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lbufR = ( indx == npm2 ? COUNT : ibufR + count ); |
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lbufR = Mmin( COUNT, lbufR ) - ibufR; lbufR = Mmax( 0, lbufR );
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partner = next; |
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} |
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/*
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* Exchange the messages
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*/
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if( lbufS > 0 ) |
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{
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#ifdef HPL_USE_MPI_DATATYPE
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if( ierr == MPI_SUCCESS )
|
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ierr = HPL_packL( PANEL, ibufS, lbufS, I_SEND ); |
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#endif
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if( ierr == MPI_SUCCESS )
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ierr = MPI_Issend( _M_ROLL_BUFF_S, _M_ROLL_COUNT_S, |
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_M_ROLL_TYPE_S, partner, msgid, comm, |
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&PANEL->request[0] );
|
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} |
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else
|
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{
|
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if( ierr == MPI_SUCCESS )
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ierr = MPI_Issend( (void *)(&dummy), 0, MPI_BYTE, partner, |
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msgid, comm, &PANEL->request[0] );
|
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} |
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|
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if( lbufR > 0 ) |
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{
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#ifdef HPL_USE_MPI_DATATYPE
|
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if( ierr == MPI_SUCCESS )
|
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ierr = HPL_packL( PANEL, ibufR, lbufR, I_RECV ); |
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#endif
|
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if( ierr == MPI_SUCCESS )
|
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ierr = MPI_Recv( _M_ROLL_BUFF_R, _M_ROLL_COUNT_R, |
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_M_ROLL_TYPE_R, partner, msgid, comm, |
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&PANEL->status[0] );
|
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#ifdef HPL_USE_MPI_DATATYPE
|
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if( ierr == MPI_SUCCESS )
|
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ierr = MPI_Type_free( &PANEL->dtypes[I_RECV] ); |
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#endif
|
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} |
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else
|
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{
|
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if( ierr == MPI_SUCCESS )
|
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ierr = MPI_Recv( (void *)(&dummy), 0, MPI_BYTE, partner, |
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msgid, comm, &PANEL->status[0] );
|
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} |
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|
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if( ierr == MPI_SUCCESS )
|
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ierr = MPI_Wait ( &PANEL->request[0], &PANEL->status[0] ); |
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#ifdef HPL_USE_MPI_DATATYPE
|
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if( ( lbufS > 0 ) && ( ierr == MPI_SUCCESS ) ) |
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ierr = MPI_Type_free( &PANEL->dtypes[I_SEND] ); |
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#endif
|
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} |
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/*
|
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* If the message was received and being forwarded, return HPL_SUCCESS.
|
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* If an error occured in an MPI call, return HPL_FAILURE.
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*/
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*IFLAG = ( ierr == MPI_SUCCESS ? HPL_SUCCESS : HPL_FAILURE ); |
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|
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return( *IFLAG );
|
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} |
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|
| 428 |
#ifdef STDC_HEADERS
|
| 429 |
int HPL_bwait_blonM
|
| 430 |
( |
| 431 |
HPL_T_panel * PANEL |
| 432 |
) |
| 433 |
#else
|
| 434 |
int HPL_bwait_blonM( PANEL )
|
| 435 |
HPL_T_panel * PANEL; |
| 436 |
#endif
|
| 437 |
{
|
| 438 |
/* ..
|
| 439 |
* .. Executable Statements ..
|
| 440 |
*/
|
| 441 |
if( PANEL == NULL ) { return( HPL_SUCCESS ); } |
| 442 |
if( PANEL->grid->npcol <= 1 ) { return( HPL_SUCCESS ); } |
| 443 |
|
| 444 |
return( HPL_SUCCESS );
|
| 445 |
} |