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331 lines
10 KiB
C
331 lines
10 KiB
C
/*
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*
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* MLD2P4 version 2.0
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* MultiLevel Domain Decomposition Parallel Preconditioners Package
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* based on PSBLAS (Parallel Sparse BLAS version 3.3)
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*
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* (C) Copyright 2008, 2010, 2012, 2015
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*
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* Salvatore Filippone University of Rome Tor Vergata
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* Alfredo Buttari CNRS-IRIT, Toulouse
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* Pasqua D'Ambra ICAR-CNR, Naples
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* Daniela di Serafino Second University of Naples
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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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* 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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* 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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* 3. The name of the MLD2P4 group or the names of its contributors may
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* not be used to endorse or promote products derived from this
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* software without specific written permission.
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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 LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE MLD2P4 GROUP OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*
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* File: mld_dslud_interface.c
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*
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* Functions: mld_dsludist_fact, mld_dsludist_solve, mld_dsludist_free.
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*
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* This file is an interface to the SuperLU_dist routines for sparse factorization and
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* solve. It was obtained by modifying the c_fortran_dgssv.c file from the SuperLU_dist
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* source distribution; original copyright terms are reproduced below.
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*
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*/
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/* =====================
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Copyright (c) 2003, The Regents of the University of California, through
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Lawrence Berkeley National Laboratory (subject to receipt of any required
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approvals from U.S. Dept. of Energy)
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All rights reserved.
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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 are met:
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(1) Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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(2) Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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(3) Neither the name of Lawrence Berkeley National Laboratory, U.S. Dept. of
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Energy nor the names of its contributors may be used to endorse or promote
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products derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* -- Distributed SuperLU routine (version 2.0) --
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* Lawrence Berkeley National Lab, Univ. of California Berkeley.
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* March 15, 2003
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*
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*/
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#ifdef Have_SLUDist_
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#include <math.h>
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#include "superlu_ddefs.h"
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#define HANDLE_SIZE 8
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typedef struct {
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SuperMatrix *A;
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LUstruct_t *LUstruct;
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gridinfo_t *grid;
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ScalePermstruct_t *ScalePermstruct;
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} factors_t;
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#else
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#include <stdio.h>
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#endif
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int mld_dsludist_fact(int n, int nl, int nnzl, int ffstr,
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double *values, int *rowptr, int *colind,
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void **f_factors, int nprow, int npcol)
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{
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/*
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* This routine can be called from Fortran.
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* performs LU decomposition.
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*
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* f_factors (input/output) void**
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* On output contains the pointer pointing to
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* the structure of the factored matrices.
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*
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*/
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#ifdef Have_SLUDist_
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SuperMatrix *A;
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NRformat_loc *Astore;
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ScalePermstruct_t *ScalePermstruct;
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LUstruct_t *LUstruct;
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SOLVEstruct_t SOLVEstruct;
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gridinfo_t *grid;
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int i, panel_size, permc_spec, relax, info;
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trans_t trans;
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double drop_tol = 0.0, b[1], berr[1];
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mem_usage_t mem_usage;
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superlu_options_t options;
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SuperLUStat_t stat;
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factors_t *LUfactors;
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int fst_row;
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int *icol,*irpt;
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double *ival;
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trans = NOTRANS;
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grid = (gridinfo_t *) SUPERLU_MALLOC(sizeof(gridinfo_t));
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superlu_gridinit(MPI_COMM_WORLD, nprow, npcol, grid);
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/* Initialize the statistics variables. */
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PStatInit(&stat);
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fst_row = (ffstr);
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A = (SuperMatrix *) malloc(sizeof(SuperMatrix));
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dCreate_CompRowLoc_Matrix_dist(A, n, n, nnzl, nl, fst_row,
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values, colind, rowptr,
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SLU_NR_loc, SLU_D, SLU_GE);
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/* Initialize ScalePermstruct and LUstruct. */
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ScalePermstruct = (ScalePermstruct_t *) SUPERLU_MALLOC(sizeof(ScalePermstruct_t));
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LUstruct = (LUstruct_t *) SUPERLU_MALLOC(sizeof(LUstruct_t));
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ScalePermstructInit(n,n, ScalePermstruct);
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LUstructInit(n,n, LUstruct);
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/* Set the default input options. */
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set_default_options_dist(&options);
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options.IterRefine=NO;
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options.PrintStat=NO;
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pdgssvx(&options, A, ScalePermstruct, b, nl, 0,
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grid, LUstruct, &SOLVEstruct, berr, &stat, &info);
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if ( info == 0 ) {
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;
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} else {
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printf("pdgssvx() error returns INFO= %d\n", info);
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if ( info <= n ) { /* factorization completes */
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;
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}
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}
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if (options.SolveInitialized) {
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dSolveFinalize(&options,&SOLVEstruct);
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}
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/* Save the LU factors in the factors handle */
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LUfactors = (factors_t *) SUPERLU_MALLOC(sizeof(factors_t));
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LUfactors->LUstruct = LUstruct;
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LUfactors->grid = grid;
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LUfactors->A = A;
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LUfactors->ScalePermstruct = ScalePermstruct;
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/* fprintf(stderr,"slud factor: LUFactors %p \n",LUfactors); */
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/* fprintf(stderr,"slud factor: A %p %p\n",A,LUfactors->A); */
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/* fprintf(stderr,"slud factor: grid %p %p\n",grid,LUfactors->grid); */
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/* fprintf(stderr,"slud factor: LUstruct %p %p\n",LUstruct,LUfactors->LUstruct); */
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*f_factors = (void *) LUfactors;
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PStatFree(&stat);
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return(info);
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#else
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fprintf(stderr," SLUDist Not Configured, fix make.inc and recompile\n");
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return(-1);
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#endif
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}
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int mld_dsludist_solve(int itrans, int n, int nrhs,
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double *b, int ldb, void *f_factors)
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{
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/*
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* This routine can be called from Fortran.
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* performs triangular solve
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*
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*/
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#ifdef Have_SLUDist_
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SuperMatrix *A;
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ScalePermstruct_t *ScalePermstruct;
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LUstruct_t *LUstruct;
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SOLVEstruct_t SOLVEstruct;
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gridinfo_t *grid;
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int i, panel_size, permc_spec, relax, info;
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trans_t trans;
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double drop_tol = 0.0;
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double *berr;
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mem_usage_t mem_usage;
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superlu_options_t options;
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SuperLUStat_t stat;
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factors_t *LUfactors;
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LUfactors = (factors_t *) f_factors ;
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A = LUfactors->A ;
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LUstruct = LUfactors->LUstruct ;
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grid = LUfactors->grid ;
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ScalePermstruct = LUfactors->ScalePermstruct;
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/* fprintf(stderr,"slud solve: LUFactors %p \n",LUfactors); */
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/* fprintf(stderr,"slud solve: A %p %p\n",A,LUfactors->A); */
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/* fprintf(stderr,"slud solve: grid %p %p\n",grid,LUfactors->grid); */
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/* fprintf(stderr,"slud solve: LUstruct %p %p\n",LUstruct,LUfactors->LUstruct); */
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if (itrans == 0) {
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trans = NOTRANS;
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} else if (itrans ==1) {
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trans = TRANS;
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} else if (itrans ==2) {
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trans = CONJ;
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} else {
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trans = NOTRANS;
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}
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/* fprintf(stderr,"Entry to sludist_solve\n"); */
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berr = (double *) malloc((nrhs) *sizeof(double));
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/* Initialize the statistics variables. */
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PStatInit(&stat);
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/* Set the default input options. */
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set_default_options_dist(&options);
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options.IterRefine = NO;
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options.Fact = FACTORED;
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options.PrintStat = NO;
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pdgssvx(&options, A, ScalePermstruct, b, ldb, nrhs,
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grid, LUstruct, &SOLVEstruct, berr, &stat, &info);
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/* fprintf(stderr,"Double check: after solve %d %lf\n",*info,berr[0]); */
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if (options.SolveInitialized) {
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dSolveFinalize(&options,&SOLVEstruct);
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}
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PStatFree(&stat);
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free(berr);
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return(info);
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#else
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fprintf(stderr," SLUDist Not Configured, fix make.inc and recompile\n");
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return(-1);
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#endif
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}
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int mld_dsludist_free(void *f_factors)
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{
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/*
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* This routine can be called from Fortran.
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*
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* free all storage in the end
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*
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*/
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#ifdef Have_SLUDist_
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SuperMatrix *A;
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ScalePermstruct_t *ScalePermstruct;
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LUstruct_t *LUstruct;
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SOLVEstruct_t SOLVEstruct;
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gridinfo_t *grid;
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int i, panel_size, permc_spec, relax;
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trans_t trans;
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double drop_tol = 0.0;
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double *berr;
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mem_usage_t mem_usage;
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superlu_options_t options;
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SuperLUStat_t stat;
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factors_t *LUfactors;
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if (f_factors == NULL)
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return(0);
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LUfactors = (factors_t *) f_factors ;
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A = LUfactors->A ;
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LUstruct = LUfactors->LUstruct ;
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grid = LUfactors->grid ;
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ScalePermstruct = LUfactors->ScalePermstruct;
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// Memory leak: with SuperLU_Dist 3.3
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// we either have a leak or a segfault here.
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// To be investigated further.
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//Destroy_CompRowLoc_Matrix_dist(A);
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ScalePermstructFree(ScalePermstruct);
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LUstructFree(LUstruct);
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superlu_gridexit(grid);
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free(grid);
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free(LUstruct);
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free(LUfactors);
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return(0);
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#else
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fprintf(stderr," SLUDist Not Configured, fix make.inc and recompile\n");
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return(-1);
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#endif
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}
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