102 lines
3.0 KiB
C
102 lines
3.0 KiB
C
/*BHEADER**********************************************************************
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* Copyright (c) 2008, Lawrence Livermore National Security, LLC.
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* Produced at the Lawrence Livermore National Laboratory.
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* This file is part of HYPRE. See file COPYRIGHT for details.
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*
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* HYPRE is free software; you can redistribute it and/or modify it under the
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* terms of the GNU Lesser General Public License (as published by the Free
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* Software Foundation) version 2.1 dated February 1999.
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*
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* $Revision$
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***********************************************************************EHEADER*/
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/******************************************************************************
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*
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* Routine for building a DistributedMatrix from a MPIAIJ Mat, i.e. PETSc matrix
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*
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*****************************************************************************/
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#ifdef HYPRE_DEBUG
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#include <gmalloc.h>
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#endif
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#include <HYPRE_config.h>
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#include "general.h"
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#include "HYPRE.h"
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#include "HYPRE_utilities.h"
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/* Prototypes for DistributedMatrix */
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#include "HYPRE_distributed_matrix_types.h"
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#include "HYPRE_distributed_matrix_protos.h"
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#ifdef PETSC_AVAILABLE
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/* Matrix structure from PETSc */
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#include "sles.h"
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/*--------------------------------------------------------------------------
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* HYPRE_ConvertPETScMatrixToDistributedMatrix
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*--------------------------------------------------------------------------*/
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int
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HYPRE_ConvertPETScMatrixToDistributedMatrix(
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Mat PETSc_matrix,
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HYPRE_DistributedMatrix *DistributedMatrix )
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{
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int ierr;
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MPI_Comm MPI_Comm;
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int M, N;
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#ifdef HYPRE_TIMING
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int timer;
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#endif
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if (!PETSc_matrix) return(-1);
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#ifdef HYPRE_TIMING
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timer = hypre_InitializeTiming( "ConvertPETScMatrixToDistributedMatrix");
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hypre_BeginTiming( timer );
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#endif
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ierr = PetscObjectGetComm( (PetscObject) PETSc_matrix, &MPI_Comm); CHKERRA(ierr);
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ierr = HYPRE_DistributedMatrixCreate( MPI_Comm, DistributedMatrix );
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/* if(ierr) return(ierr); */
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ierr = HYPRE_DistributedMatrixSetLocalStorageType( *DistributedMatrix,
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HYPRE_PETSC );
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/* if(ierr) return(ierr);*/
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ierr = HYPRE_DistributedMatrixInitialize( *DistributedMatrix );
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/* if(ierr) return(ierr);*/
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ierr = HYPRE_DistributedMatrixSetLocalStorage( *DistributedMatrix, PETSc_matrix );
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/* if(ierr) return(ierr); */
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/* Note that this is kind of cheating, since the Mat structure contains more
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than local information... the alternative is to extract the global info
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from the Mat and put it into DistributedMatrixAuxiliaryStorage. However,
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the latter is really a "just in case" option, and so if we don't *have*
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to use it, we won't.*/
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ierr = MatGetSize( PETSc_matrix, &M, &N); if(ierr) return(ierr);
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ierr = HYPRE_DistributedMatrixSetDims( *DistributedMatrix, M, N);
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ierr = HYPRE_DistributedMatrixAssemble( *DistributedMatrix );
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/* if(ierr) return(ierr);*/
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#ifdef HYPRE_TIMING
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hypre_EndTiming( timer );
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/* hypre_FinalizeTiming( timer ); */
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#endif
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return(0);
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}
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#endif
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