mpi_volume_homogenizer.cpp

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/***************************************************************************
 * Authors:     Mohsen Kazemi (mkazemi@cnb.csic.es)
 *
 *
 * Unidad de  Bioinformatica of Centro Nacional de Biotecnologia , CSIC
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 * 02111-1307  USA
 *
 *  All comments concerning this program package may be sent to the
 *  e-mail address 'xmipp@cnb.csic.es'
 ***************************************************************************/

#include "mpi_volume_homogenizer.h"
#include <core/metadata_db.h>

MpiProgVolumeHomogenizer::MpiProgVolumeHomogenizer()
{
    node=NULL;
}

MpiProgVolumeHomogenizer::~MpiProgVolumeHomogenizer()
{
    delete node;
}

void MpiProgVolumeHomogenizer::read(int argc, char** argv)
{
    node = new MpiNode(argc, argv);
    rank = node->rank;
    Nprocessors = node->size;
    ProgVolumeHomogenizer::read(argc, (const char **)argv);
}

void MpiProgVolumeHomogenizer::synchronize()
{
    node->barrierWait();
}

void MpiProgVolumeHomogenizer::gatherResults()
{
    // Write all metadatas


    if (rank!=0)
    {
        FileName fnPartial=formatString("partial_node%03d.xmd",(int)rank);
        if (mdPartialParticles.size()>0)
            mdPartialParticles.write(fnPartial);
    }

    synchronize();

    // Now the master takes all of them
    if (rank==0)
    {
        MetaDataDb MDAux;
        for (size_t otherRank=1; otherRank<Nprocessors; ++otherRank)
        {
                FileName fnP = formatString("partial_node%03d.xmd",(int)otherRank);

                if (fnP.exists())
                {
                    MDAux.read(fnP);
                    mdPartialParticles.unionAll(MDAux);
                    deleteFile(fnP);
                }
        }
    }

    synchronize();

}