root / src / panel / HPL_pdpanel_init.c @ 1
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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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#ifdef STDC_HEADERS
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void HPL_pdpanel_init
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( |
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HPL_T_grid * GRID, |
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HPL_T_palg * ALGO, |
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const int M, |
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const int N, |
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const int JB, |
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HPL_T_pmat * A, |
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const int IA, |
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const int JA, |
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const int TAG, |
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HPL_T_panel * PANEL |
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) |
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#else
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void HPL_pdpanel_init
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( GRID, ALGO, M, N, JB, A, IA, JA, TAG, PANEL ) |
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HPL_T_grid * GRID; |
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HPL_T_palg * ALGO; |
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const int M; |
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const int N; |
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const int JB; |
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HPL_T_pmat * A; |
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const int IA; |
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const int JA; |
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const int TAG; |
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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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* Purpose
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* =======
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*
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* HPL_pdpanel_init initializes a panel data structure.
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*
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*
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* Arguments
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* =========
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*
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* GRID (local input) HPL_T_grid *
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* On entry, GRID points to the data structure containing the
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* process grid information.
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*
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* ALGO (global input) HPL_T_palg *
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* On entry, ALGO points to the data structure containing the
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* algorithmic parameters.
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*
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* M (local input) const int
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* On entry, M specifies the global number of rows of the panel.
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* M must be at least zero.
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*
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* N (local input) const int
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* On entry, N specifies the global number of columns of the
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* panel and trailing submatrix. N must be at least zero.
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*
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* JB (global input) const int
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* On entry, JB specifies is the number of columns of the panel.
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* JB must be at least zero.
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*
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* A (local input/output) HPL_T_pmat *
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* On entry, A points to the data structure containing the local
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* array information.
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*
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* IA (global input) const int
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* On entry, IA is the global row index identifying the panel
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* and trailing submatrix. IA must be at least zero.
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*
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* JA (global input) const int
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* On entry, JA is the global column index identifying the panel
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* and trailing submatrix. JA must be at least zero.
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*
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* TAG (global input) const int
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* On entry, TAG is the row broadcast message id.
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*
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* PANEL (local input/output) HPL_T_panel *
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* On entry, PANEL points to the data structure containing the
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* panel information.
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*
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* ---------------------------------------------------------------------
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*/
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/*
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* .. Local Variables ..
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*/
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size_t dalign; |
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int icurcol, icurrow, ii, itmp1, jj, lwork,
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ml2, mp, mycol, myrow, nb, npcol, nprow, |
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nq, nu; |
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/* ..
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* .. Executable Statements ..
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*/
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PANEL->grid = GRID; /* ptr to the process grid */
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PANEL->algo = ALGO; /* ptr to the algo parameters */
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PANEL->pmat = A; /* ptr to the local array info */
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myrow = GRID->myrow; mycol = GRID->mycol; |
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nprow = GRID->nprow; npcol = GRID->npcol; nb = A->nb; |
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HPL_infog2l( IA, JA, nb, nb, nb, nb, 0, 0, myrow, mycol, |
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nprow, npcol, &ii, &jj, &icurrow, &icurcol ); |
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mp = HPL_numrocI( M, IA, nb, nb, myrow, 0, nprow );
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nq = HPL_numrocI( N, JA, nb, nb, mycol, 0, npcol );
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/* ptr to trailing part of A */
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PANEL->A = Mptr( (double *)(A->A), ii, jj, A->ld );
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/*
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* Workspace pointers are initialized to NULL.
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*/
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PANEL->WORK = NULL; PANEL->L2 = NULL; PANEL->L1 = NULL; |
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PANEL->DPIV = NULL; PANEL->DINFO = NULL; PANEL->U = NULL; |
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PANEL->IWORK = NULL;
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/*
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* Local lengths, indexes process coordinates
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*/
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PANEL->nb = nb; /* distribution blocking factor */
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PANEL->jb = JB; /* panel width */
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PANEL->m = M; /* global # of rows of trailing part of A */
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PANEL->n = N; /* global # of cols of trailing part of A */
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PANEL->ia = IA; /* global row index of trailing part of A */
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PANEL->ja = JA; /* global col index of trailing part of A */
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PANEL->mp = mp; /* local # of rows of trailing part of A */
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PANEL->nq = nq; /* local # of cols of trailing part of A */
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PANEL->ii = ii; /* local row index of trailing part of A */
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PANEL->jj = jj; /* local col index of trailing part of A */
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PANEL->lda = A->ld; /* local leading dim of array A */
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PANEL->prow = icurrow; /* proc row owning 1st row of trailing A */
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PANEL->pcol = icurcol; /* proc col owning 1st col of trailing A */
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PANEL->msgid = TAG; /* message id to be used for panel bcast */
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/*
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* Initialize ldl2 and len to temporary dummy values and Update tag for
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* next panel
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*/
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PANEL->ldl2 = 0; /* local leading dim of array L2 */ |
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PANEL->len = 0; /* length of the buffer to broadcast */ |
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/*
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* Figure out the exact amount of workspace needed by the factorization
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* and the update - Allocate that space - Finish the panel data structu-
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* re initialization.
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*
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* L1: JB x JB in all processes
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* DPIV: JB in all processes
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* DINFO: 1 in all processes
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*
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* We make sure that those three arrays are contiguous in memory for the
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* later panel broadcast. We also choose to put this amount of space
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* right after L2 (when it exist) so that one can receive a contiguous
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* buffer.
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*/
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dalign = ALGO->align * sizeof( double ); |
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if( npcol == 1 ) /* P x 1 process grid */ |
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{ /* space for L1, DPIV, DINFO */
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lwork = ALGO->align + ( PANEL->len = JB * JB + JB + 1 );
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if( nprow > 1 ) /* space for U */ |
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{ nu = nq - JB; lwork += JB * Mmax( 0, nu ); }
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if( !( PANEL->WORK = (void *)malloc( (size_t)(lwork) * |
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sizeof( double ) ) ) ) |
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{
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HPL_pabort( __LINE__, "HPL_pdpanel_init",
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"Memory allocation failed" );
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} |
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/*
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* Initialize the pointers of the panel structure - Always re-use A in
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* the only process column
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*/
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PANEL->L2 = PANEL->A + ( myrow == icurrow ? JB : 0 );
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PANEL->ldl2 = A->ld; |
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PANEL->L1 = (double *)HPL_PTR( PANEL->WORK, dalign );
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PANEL->DPIV = PANEL->L1 + JB * JB; |
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PANEL->DINFO = PANEL->DPIV + JB; *(PANEL->DINFO) = 0.0; |
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PANEL->U = ( nprow > 1 ? PANEL->DINFO + 1: NULL ); |
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} |
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else
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{ /* space for L2, L1, DPIV */
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ml2 = ( myrow == icurrow ? mp - JB : mp ); ml2 = Mmax( 0, ml2 );
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PANEL->len = ml2*JB + ( itmp1 = JB*JB + JB + 1 );
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#ifdef HPL_COPY_L
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lwork = ALGO->align + PANEL->len; |
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#else
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lwork = ALGO->align + ( mycol == icurcol ? itmp1 : PANEL->len ); |
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#endif
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if( nprow > 1 ) /* space for U */ |
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{
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nu = ( mycol == icurcol ? nq - JB : nq ); |
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lwork += JB * Mmax( 0, nu );
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} |
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if( !( PANEL->WORK = (void *)malloc( (size_t)(lwork) * |
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sizeof( double ) ) ) ) |
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{
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HPL_pabort( __LINE__, "HPL_pdpanel_init",
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"Memory allocation failed" );
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} |
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/*
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* Initialize the pointers of the panel structure - Re-use A in the cur-
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* rent process column when HPL_COPY_L is not defined.
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*/
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#ifdef HPL_COPY_L
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PANEL->L2 = (double *)HPL_PTR( PANEL->WORK, dalign );
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PANEL->ldl2 = Mmax( 1, ml2 );
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PANEL->L1 = PANEL->L2 + ml2 * JB; |
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#else
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if( mycol == icurcol )
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{
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PANEL->L2 = PANEL->A + ( myrow == icurrow ? JB : 0 );
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PANEL->ldl2 = A->ld; |
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PANEL->L1 = (double *)HPL_PTR( PANEL->WORK, dalign );
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} |
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else
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{
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PANEL->L2 = (double *)HPL_PTR( PANEL->WORK, dalign );
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PANEL->ldl2 = Mmax( 1, ml2 );
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PANEL->L1 = PANEL->L2 + ml2 * JB; |
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} |
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#endif
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PANEL->DPIV = PANEL->L1 + JB * JB; |
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PANEL->DINFO = PANEL->DPIV + JB; *(PANEL->DINFO) = 0.0; |
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PANEL->U = ( nprow > 1 ? PANEL->DINFO + 1 : NULL ); |
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} |
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#ifdef HPL_CALL_VSIPL
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PANEL->Ablock = A->block; |
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/*
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* Create blocks and bind them to the data pointers
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*/
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PANEL->L1block = vsip_blockbind_d( (vsip_scalar_d *)(PANEL->L1), |
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(vsip_length)(JB*JB), VSIP_MEM_NONE ); |
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PANEL->L2block = vsip_blockbind_d( (vsip_scalar_d *)(PANEL->L2), |
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(vsip_length)(PANEL->ldl2*JB), |
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VSIP_MEM_NONE ); |
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if( nprow > 1 ) |
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{
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nu = ( mycol == icurcol ? nq - JB : nq ); |
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PANEL->Ublock = vsip_blockbind_d( (vsip_scalar_d *)(PANEL->U), |
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(vsip_length)(JB * Mmax( 0, nu )),
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VSIP_MEM_NONE ); |
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} |
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else { PANEL->Ublock = A->block; }
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#endif
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/*
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* If nprow is 1, we just allocate an array of JB integers for the swap.
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* When nprow > 1, we allocate the space for the index arrays immediate-
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* ly. The exact size of this array depends on the swapping routine that
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* will be used, so we allocate the maximum:
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*
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* IWORK[0] is of size at most 1 +
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* IPL is of size at most 1 +
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* IPID is of size at most 4 * JB +
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*
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* For HPL_pdlaswp00:
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* lindxA is of size at most 2 * JB +
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* lindxAU is of size at most 2 * JB +
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* llen is of size at most NPROW +
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* llen_sv is of size at most NPROW.
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*
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* For HPL_pdlaswp01:
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* ipA is of size ar most 1 +
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* lindxA is of size at most 2 * JB +
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* lindxAU is of size at most 2 * JB +
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* iplen is of size at most NPROW + 1 +
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* ipmap is of size at most NPROW +
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* ipmapm1 is of size at most NPROW +
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* permU is of size at most JB +
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* iwork is of size at most MAX( 2*JB, NPROW+1 ).
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*
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* that is 3 + 8*JB + MAX(2*NPROW, 3*NPROW+1+JB+MAX(2*JB,NPROW+1))
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* = 4 + 9*JB + 3*NPROW + MAX( 2*JB, NPROW+1 ).
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*
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* We use the fist entry of this to work array to indicate whether the
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* the local index arrays have already been computed, and if yes, by
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* which function:
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* IWORK[0] = -1: no index arrays have been computed so far;
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* IWORK[0] = 0: HPL_pdlaswp00 already computed those arrays;
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* IWORK[0] = 1: HPL_pdlaswp01 already computed those arrays;
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* This allows to save some redundant and useless computations.
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*/
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if( nprow == 1 ) { lwork = JB; } |
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else
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{
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itmp1 = (JB << 1); lwork = nprow + 1; itmp1 = Mmax( itmp1, lwork ); |
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lwork = 4 + (9 * JB) + (3 * nprow) + itmp1; |
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} |
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PANEL->IWORK = (int *)malloc( (size_t)(lwork) * sizeof( int ) ); |
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if( PANEL->IWORK == NULL ) |
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{ HPL_pabort( __LINE__, "HPL_pdpanel_init", "Memory allocation failed" ); }
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/* Initialize the first entry of the workarray */
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*(PANEL->IWORK) = -1;
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/*
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* End of HPL_pdpanel_init
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*/
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} |