src/io/DumpWriter.cpp

 /*
 * Copyright (c) 2005 The University of Notre Dame. All Rights Reserved.
 *
 * The University of Notre Dame grants you ("Licensee") a
 * non-exclusive, royalty free, license to use, modify and
 * redistribute this software in source and binary code form, provided
 * that the following conditions are met:
 *
 * 1. Acknowledgement of the program authors must be made in any
 *    publication of scientific results based in part on use of the
 *    program.  An acceptable form of acknowledgement is citation of
 *    the article in which the program was described (Matthew
 *    A. Meineke, Charles F. Vardeman II, Teng Lin, Christopher
 *    J. Fennell and J. Daniel Gezelter, "OOPSE: An Object-Oriented
 *    Parallel Simulation Engine for Molecular Dynamics,"
 *    J. Comput. Chem. 26, pp. 252-271 (2005))
 *
 * 2. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 3. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the
 *    distribution.
 *
 * This software is provided "AS IS," without a warranty of any
 * kind. All express or implied conditions, representations and
 * warranties, including any implied warranty of merchantability,
 * fitness for a particular purpose or non-infringement, are hereby
 * excluded.  The University of Notre Dame and its licensors shall not
 * be liable for any damages suffered by licensee as a result of
 * using, modifying or distributing the software or its
 * derivatives. In no event will the University of Notre Dame or its
 * licensors be liable for any lost revenue, profit or data, or for
 * direct, indirect, special, consequential, incidental or punitive
 * damages, however caused and regardless of the theory of liability,
 * arising out of the use of or inability to use software, even if the
 * University of Notre Dame has been advised of the possibility of
 * such damages.
 */
 
#include "io/DumpWriter.hpp"
#include "primitives/Molecule.hpp"
#include "utils/simError.h"

#ifdef IS_MPI
#include <mpi.h>
#endif //is_mpi

namespace oopse {

DumpWriter::DumpWriter(SimInfo* info, const std::string& filename) 
                   : info_(info), filename_(filename){
#ifdef IS_MPI

    if (worldRank == 0) {
#endif // is_mpi

        dumpFile_.open(filename_.c_str(), std::ios::out | std::ios::trunc);

        if (!dumpFile_) {
            sprintf(painCave.errMsg, "Could not open \"%s\" for dump output.\n",
                    filename_.c_str());
            painCave.isFatal = 1;
            simError();
        }

#ifdef IS_MPI

    }

    sprintf(checkPointMsg, "Sucessfully opened output file for dumping.\n");
    MPIcheckPoint();

#endif // is_mpi

}

DumpWriter::~DumpWriter() {

#ifdef IS_MPI

    if (worldRank == 0) {
#endif // is_mpi

        dumpFile_.close();

#ifdef IS_MPI

    }

#endif // is_mpi

}

void DumpWriter::writeCommentLine(std::ostream& os, Snapshot* s) {

    double currentTime;
    Mat3x3d hmat;
    double chi;
    double integralOfChiDt;
    Mat3x3d eta;
    
    currentTime = s->getTime();
    hmat = s->getHmat();
    chi = s->getChi();
    integralOfChiDt = s->getIntegralOfChiDt();
    eta = s->getEta();
    
    os << currentTime << ";\t" 
         << hmat(0, 0) << "\t" << hmat(1, 0) << "\t" << hmat(2, 0) << ";\t" 
         << hmat(0, 1) << "\t" << hmat(1, 1) << "\t" << hmat(2, 1) << ";\t"
         << hmat(0, 2) << "\t" << hmat(1, 2) << "\t" << hmat(2, 2) << ";\t";

    //write out additional parameters, such as chi and eta

    os << chi << "\t" << integralOfChiDt << "\t;";

    os << eta(0, 0) << "\t" << eta(1, 0) << "\t" << eta(2, 0) << ";\t" 
         << eta(0, 1) << "\t" << eta(1, 1) << "\t" << eta(2, 1) << ";\t"
         << eta(0, 2) << "\t" << eta(1, 2) << "\t" << eta(2, 2) << ";";
        
    os << std::endl;
}

void DumpWriter::writeFrame(std::ostream& os) {
    const int BUFFERSIZE = 2000;
    const int MINIBUFFERSIZE = 100;

    char tempBuffer[BUFFERSIZE];
    char writeLine[BUFFERSIZE];

    Quat4d q;
    Vector3d ji;
    Vector3d pos;
    Vector3d vel;

    Molecule* mol;
    StuntDouble* integrableObject;
    SimInfo::MoleculeIterator mi;
    Molecule::IntegrableObjectIterator ii;
  
    int nTotObjects;    
    nTotObjects = info_->getNGlobalIntegrableObjects();

#ifndef IS_MPI


    os << nTotObjects << "\n";
        
    writeCommentLine(os, info_->getSnapshotManager()->getCurrentSnapshot());

    for (mol = info_->beginMolecule(mi); mol != NULL; mol = info_->nextMolecule(mi)) {

        for (integrableObject = mol->beginIntegrableObject(ii); integrableObject != NULL; 
            integrableObject = mol->nextIntegrableObject(ii)) { 
                

            pos = integrableObject->getPos();
            vel = integrableObject->getVel();

            sprintf(tempBuffer, "%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t",
                    integrableObject->getType().c_str(), 
                    pos[0], pos[1], pos[2],
                    vel[0], vel[1], vel[2]);

            strcpy(writeLine, tempBuffer);

            if (integrableObject->isDirectional()) {
                q = integrableObject->getQ();
                ji = integrableObject->getJ();

                sprintf(tempBuffer, "%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\n", 
                        q[0], q[1], q[2], q[3],
                        ji[0], ji[1], ji[2]);
                strcat(writeLine, tempBuffer);
            } else {
                strcat(writeLine, "0.0\t0.0\t0.0\t0.0\t0.0\t0.0\t0.0\n");
            }

            os << writeLine;

        }
    }

    os.flush();
#else // is_mpi
    /*********************************************************************
     * Documentation?  You want DOCUMENTATION?
     * 
     * Why all the potatoes below?  
     *
     * To make a long story short, the original version of DumpWriter
     * worked in the most inefficient way possible.  Node 0 would 
     * poke each of the node for an individual atom's formatted data 
     * as node 0 worked its way down the global index. This was particularly 
     * inefficient since the method blocked all processors at every atom 
     * (and did it twice!).
     *
     * An intermediate version of DumpWriter could be described from Node
     * zero's perspective as follows:
     * 
     *  1) Have 100 of your friends stand in a circle.
     *  2) When you say go, have all of them start tossing potatoes at
     *     you (one at a time).
     *  3) Catch the potatoes.
     *
     * It was an improvement, but MPI has buffers and caches that could 
     * best be described in this analogy as "potato nets", so there's no 
     * need to block the processors atom-by-atom.
     * 
     * This new and improved DumpWriter works in an even more efficient 
     * way:
     * 
     *  1) Have 100 of your friend stand in a circle.
     *  2) When you say go, have them start tossing 5-pound bags of 
     *     potatoes at you.
     *  3) Once you've caught a friend's bag of potatoes,
     *     toss them a spud to let them know they can toss another bag.
     *
     * How's THAT for documentation?
     *
     *********************************************************************/
    const int masterNode = 0;

    int * potatoes;
    int myPotato;
    int nProc;
    int which_node;
    double atomData[13];
    int isDirectional;
    const char * atomTypeString;
    char MPIatomTypeString[MINIBUFFERSIZE];
    int msgLen; // the length of message actually recieved at master nodes
    int haveError;
    MPI_Status istatus;
    int nCurObj;
    
    // code to find maximum tag value
    int * tagub;
    int flag;
    int MAXTAG;
    MPI_Attr_get(MPI_COMM_WORLD, MPI_TAG_UB, &tagub, &flag);

    if (flag) {
        MAXTAG = *tagub;
    } else {
        MAXTAG = 32767;
    }

    if (worldRank == masterNode) { //master node (node 0) is responsible for writing the dump file

        // Node 0 needs a list of the magic potatoes for each processor;

        MPI_Comm_size(MPI_COMM_WORLD, &nProc);
        potatoes = new int[nProc];

        //write out the comment lines
        for(int i = 0; i < nProc; i++) {
            potatoes[i] = 0;
        }


        os << nTotObjects << "\n";
        writeCommentLine(os, info_->getSnapshotManager()->getCurrentSnapshot());

        for(int i = 0; i < info_->getNGlobalMolecules(); i++) {

            // Get the Node number which has this atom;

            which_node = info_->getMolToProc(i);

            if (which_node != masterNode) { //current molecule is in slave node
                if (potatoes[which_node] + 1 >= MAXTAG) {
                    // The potato was going to exceed the maximum value, 
                    // so wrap this processor potato back to 0:         

                    potatoes[which_node] = 0;
                    MPI_Send(&potatoes[which_node], 1, MPI_INT, which_node, 0,
                             MPI_COMM_WORLD);
                }

                myPotato = potatoes[which_node];

                //recieve the number of integrableObject in current molecule
                MPI_Recv(&nCurObj, 1, MPI_INT, which_node, myPotato,
                         MPI_COMM_WORLD, &istatus);
                myPotato++;

                for(int l = 0; l < nCurObj; l++) {
                    if (potatoes[which_node] + 2 >= MAXTAG) {
                        // The potato was going to exceed the maximum value, 
                        // so wrap this processor potato back to 0:         

                        potatoes[which_node] = 0;
                        MPI_Send(&potatoes[which_node], 1, MPI_INT, which_node,
                                 0, MPI_COMM_WORLD);
                    }

                    MPI_Recv(MPIatomTypeString, MINIBUFFERSIZE, MPI_CHAR,
                             which_node, myPotato, MPI_COMM_WORLD,
                             &istatus);

                    atomTypeString = MPIatomTypeString;

                    myPotato++;

                    MPI_Recv(atomData, 13, MPI_DOUBLE, which_node, myPotato,
                             MPI_COMM_WORLD, &istatus);
                    myPotato++;

                    MPI_Get_count(&istatus, MPI_DOUBLE, &msgLen);

                    if (msgLen == 13)
                        isDirectional = 1;
                    else
                        isDirectional = 0;

                    // If we've survived to here, format the line:

                    if (!isDirectional) {
                        sprintf(writeLine, "%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t",
                                atomTypeString, atomData[0],
                                atomData[1], atomData[2],
                                atomData[3], atomData[4],
                                atomData[5]);

                        strcat(writeLine,
                               "0.0\t0.0\t0.0\t0.0\t0.0\t0.0\t0.0\n");
                    } else {
                        sprintf(writeLine,
                                "%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\n",
                                atomTypeString,
                                atomData[0],
                                atomData[1],
                                atomData[2],
                                atomData[3],
                                atomData[4],
                                atomData[5],
                                atomData[6],
                                atomData[7],
                                atomData[8],
                                atomData[9],
                                atomData[10],
                                atomData[11],
                                atomData[12]);
                    }

                    os << writeLine;

                } // end for(int l =0)

                potatoes[which_node] = myPotato;
            } else { //master node has current molecule

                mol = info_->getMoleculeByGlobalIndex(i);

                if (mol == NULL) {
                    sprintf(painCave.errMsg, "Molecule not found on node %d!", worldRank);
                    painCave.isFatal = 1;
                    simError();
                }
                
                for (integrableObject = mol->beginIntegrableObject(ii); integrableObject != NULL; 
                    integrableObject = mol->nextIntegrableObject(ii)) {
                        
                    atomTypeString = integrableObject->getType().c_str();

                    pos = integrableObject->getPos();
                    vel = integrableObject->getVel();

                    atomData[0] = pos[0];
                    atomData[1] = pos[1];
                    atomData[2] = pos[2];

                    atomData[3] = vel[0];
                    atomData[4] = vel[1];
                    atomData[5] = vel[2];

                    isDirectional = 0;

                    if (integrableObject->isDirectional()) {
                        isDirectional = 1;

                        q = integrableObject->getQ();
                        ji = integrableObject->getJ();

                        for(int j = 0; j < 6; j++) {
                            atomData[j] = atomData[j];
                        }

                        atomData[6] = q[0];
                        atomData[7] = q[1];
                        atomData[8] = q[2];
                        atomData[9] = q[3];

                        atomData[10] = ji[0];
                        atomData[11] = ji[1];
                        atomData[12] = ji[2];
                    }

                    // If we've survived to here, format the line:

                    if (!isDirectional) {
                        sprintf(writeLine, "%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t",
                                atomTypeString, atomData[0],
                                atomData[1], atomData[2],
                                atomData[3], atomData[4],
                                atomData[5]);

                        strcat(writeLine,
                               "0.0\t0.0\t0.0\t0.0\t0.0\t0.0\t0.0\n");
                    } else {
                        sprintf(writeLine,
                                "%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\n",
                                atomTypeString,
                                atomData[0],
                                atomData[1],
                                atomData[2],
                                atomData[3],
                                atomData[4],
                                atomData[5],
                                atomData[6],
                                atomData[7],
                                atomData[8],
                                atomData[9],
                                atomData[10],
                                atomData[11],
                                atomData[12]);
                    }


                    os << writeLine;

                } //end for(iter = integrableObject.begin())
            }
        } //end for(i = 0; i < mpiSim->getNmol())

        os.flush();
        
        sprintf(checkPointMsg, "Sucessfully took a dump.\n");
        MPIcheckPoint();

        delete [] potatoes;
    } else {

        // worldRank != 0, so I'm a remote node.  

        // Set my magic potato to 0:

        myPotato = 0;

        for(int i = 0; i < info_->getNGlobalMolecules(); i++) {

            // Am I the node which has this integrableObject?
            int whichNode = info_->getMolToProc(i);
            if (whichNode == worldRank) {
                if (myPotato + 1 >= MAXTAG) {

                    // The potato was going to exceed the maximum value, 
                    // so wrap this processor potato back to 0 (and block until
                    // node 0 says we can go:

                    MPI_Recv(&myPotato, 1, MPI_INT, 0, 0, MPI_COMM_WORLD,
                             &istatus);
                }

                mol = info_->getMoleculeByGlobalIndex(i);

                
                nCurObj = mol->getNIntegrableObjects();

                MPI_Send(&nCurObj, 1, MPI_INT, 0, myPotato, MPI_COMM_WORLD);
                myPotato++;

                for (integrableObject = mol->beginIntegrableObject(ii); integrableObject != NULL; 
                    integrableObject = mol->nextIntegrableObject(ii)) {

                    if (myPotato + 2 >= MAXTAG) {

                        // The potato was going to exceed the maximum value, 
                        // so wrap this processor potato back to 0 (and block until
                        // node 0 says we can go:

                        MPI_Recv(&myPotato, 1, MPI_INT, 0, 0, MPI_COMM_WORLD,
                                 &istatus);
                    }

                    atomTypeString = integrableObject->getType().c_str();

                    pos = integrableObject->getPos();
                    vel = integrableObject->getVel();

                    atomData[0] = pos[0];
                    atomData[1] = pos[1];
                    atomData[2] = pos[2];

                    atomData[3] = vel[0];
                    atomData[4] = vel[1];
                    atomData[5] = vel[2];

                    isDirectional = 0;

                    if (integrableObject->isDirectional()) {
                        isDirectional = 1;

                        q = integrableObject->getQ();
                        ji = integrableObject->getJ();

                        atomData[6] = q[0];
                        atomData[7] = q[1];
                        atomData[8] = q[2];
                        atomData[9] = q[3];

                        atomData[10] = ji[0];
                        atomData[11] = ji[1];
                        atomData[12] = ji[2];
                    }

                    strncpy(MPIatomTypeString, atomTypeString, MINIBUFFERSIZE);

                    // null terminate the  std::string before sending (just in case):
                    MPIatomTypeString[MINIBUFFERSIZE - 1] = '\0';

                    MPI_Send(MPIatomTypeString, MINIBUFFERSIZE, MPI_CHAR, 0,
                             myPotato, MPI_COMM_WORLD);

                    myPotato++;

                    if (isDirectional) {
                        MPI_Send(atomData, 13, MPI_DOUBLE, 0, myPotato,
                                 MPI_COMM_WORLD);
                    } else {
                        MPI_Send(atomData, 6, MPI_DOUBLE, 0, myPotato,
                                 MPI_COMM_WORLD);
                    }

                    myPotato++;
                }
                    
            }
            
        }
        sprintf(checkPointMsg, "Sucessfully took a dump.\n");
        MPIcheckPoint();
    }

#endif // is_mpi

}

}//end namespace oopse
Revision:	324
Committed:	Sun Feb 13 19:10:25 2005 UTC (20 years, 2 months ago) by tim
Original Path:	*trunk/src/io/DumpWriter.cpp*
File size:	18925 byte(s)
Log Message:	dynamicProps get built
#	User	Rev	Content
1	gezelter	246	/*
2			* Copyright (c) 2005 The University of Notre Dame. All Rights Reserved.
3			*
4			* The University of Notre Dame grants you ("Licensee") a
5			* non-exclusive, royalty free, license to use, modify and
6			* redistribute this software in source and binary code form, provided
7			* that the following conditions are met:
8			*
9			* 1. Acknowledgement of the program authors must be made in any
10			* publication of scientific results based in part on use of the
11			* program. An acceptable form of acknowledgement is citation of
12			* the article in which the program was described (Matthew
13			* A. Meineke, Charles F. Vardeman II, Teng Lin, Christopher
14			* J. Fennell and J. Daniel Gezelter, "OOPSE: An Object-Oriented
15			* Parallel Simulation Engine for Molecular Dynamics,"
16			* J. Comput. Chem. 26, pp. 252-271 (2005))
17			*
18			* 2. Redistributions of source code must retain the above copyright
19			* notice, this list of conditions and the following disclaimer.
20			*
21			* 3. Redistributions in binary form must reproduce the above copyright
22			* notice, this list of conditions and the following disclaimer in the
23			* documentation and/or other materials provided with the
24			* distribution.
25			*
26			* This software is provided "AS IS," without a warranty of any
27			* kind. All express or implied conditions, representations and
28			* warranties, including any implied warranty of merchantability,
29			* fitness for a particular purpose or non-infringement, are hereby
30			* excluded. The University of Notre Dame and its licensors shall not
31			* be liable for any damages suffered by licensee as a result of
32			* using, modifying or distributing the software or its
33			* derivatives. In no event will the University of Notre Dame or its
34			* licensors be liable for any lost revenue, profit or data, or for
35			* direct, indirect, special, consequential, incidental or punitive
36			* damages, however caused and regardless of the theory of liability,
37			* arising out of the use of or inability to use software, even if the
38			* University of Notre Dame has been advised of the possibility of
39			* such damages.
40			*/
41
42			#include "io/DumpWriter.hpp"
43			#include "primitives/Molecule.hpp"
44			#include "utils/simError.h"
45	gezelter	2
46			#ifdef IS_MPI
47			#include <mpi.h>
48	gezelter	246	#endif //is_mpi
49	gezelter	2
50	gezelter	246	namespace oopse {
51	gezelter	2
52	gezelter	246	DumpWriter::DumpWriter(SimInfo* info, const std::string& filename)
53			: info_(info), filename_(filename){
54			#ifdef IS_MPI
55	gezelter	2
56	gezelter	246	if (worldRank == 0) {
57			#endif // is_mpi
58	gezelter	2
59	gezelter	246	dumpFile_.open(filename_.c_str(), std::ios::out \| std::ios::trunc);
60	gezelter	2
61	gezelter	246	if (!dumpFile_) {
62			sprintf(painCave.errMsg, "Could not open \"%s\" for dump output.\n",
63			filename_.c_str());
64			painCave.isFatal = 1;
65			simError();
66			}
67	gezelter	2
68			#ifdef IS_MPI
69
70			}
71
72	gezelter	246	sprintf(checkPointMsg, "Sucessfully opened output file for dumping.\n");
73			MPIcheckPoint();
74	gezelter	2
75			#endif // is_mpi
76	gezelter	246
77	gezelter	2	}
78
79	gezelter	246	DumpWriter::~DumpWriter() {
80	gezelter	2
81			#ifdef IS_MPI
82	gezelter	246
83			if (worldRank == 0) {
84	gezelter	2	#endif // is_mpi
85
86	gezelter	246	dumpFile_.close();
87	gezelter	2
88			#ifdef IS_MPI
89	gezelter	246
90			}
91
92	gezelter	2	#endif // is_mpi
93	gezelter	246
94	gezelter	2	}
95
96	gezelter	246	void DumpWriter::writeCommentLine(std::ostream& os, Snapshot* s) {
97	gezelter	2
98	gezelter	246	double currentTime;
99			Mat3x3d hmat;
100			double chi;
101			double integralOfChiDt;
102			Mat3x3d eta;
103
104			currentTime = s->getTime();
105			hmat = s->getHmat();
106			chi = s->getChi();
107			integralOfChiDt = s->getIntegralOfChiDt();
108			eta = s->getEta();
109
110			os << currentTime << ";\t"
111			<< hmat(0, 0) << "\t" << hmat(1, 0) << "\t" << hmat(2, 0) << ";\t"
112			<< hmat(0, 1) << "\t" << hmat(1, 1) << "\t" << hmat(2, 1) << ";\t"
113			<< hmat(0, 2) << "\t" << hmat(1, 2) << "\t" << hmat(2, 2) << ";\t";
114	gezelter	2
115	gezelter	246	//write out additional parameters, such as chi and eta
116
117			os << chi << "\t" << integralOfChiDt << "\t;";
118
119			os << eta(0, 0) << "\t" << eta(1, 0) << "\t" << eta(2, 0) << ";\t"
120			<< eta(0, 1) << "\t" << eta(1, 1) << "\t" << eta(2, 1) << ";\t"
121			<< eta(0, 2) << "\t" << eta(1, 2) << "\t" << eta(2, 2) << ";";
122
123			os << std::endl;
124	gezelter	2	}
125
126	gezelter	246	void DumpWriter::writeFrame(std::ostream& os) {
127			const int BUFFERSIZE = 2000;
128			const int MINIBUFFERSIZE = 100;
129
130			char tempBuffer[BUFFERSIZE];
131			char writeLine[BUFFERSIZE];
132
133			Quat4d q;
134			Vector3d ji;
135			Vector3d pos;
136			Vector3d vel;
137
138			Molecule* mol;
139			StuntDouble* integrableObject;
140			SimInfo::MoleculeIterator mi;
141			Molecule::IntegrableObjectIterator ii;
142	gezelter	2
143	gezelter	246	int nTotObjects;
144			nTotObjects = info_->getNGlobalIntegrableObjects();
145	gezelter	2
146	gezelter	246	#ifndef IS_MPI
147	gezelter	2
148
149	gezelter	246	os << nTotObjects << "\n";
150
151			writeCommentLine(os, info_->getSnapshotManager()->getCurrentSnapshot());
152	gezelter	2
153	gezelter	246	for (mol = info_->beginMolecule(mi); mol != NULL; mol = info_->nextMolecule(mi)) {
154	gezelter	2
155	gezelter	246	for (integrableObject = mol->beginIntegrableObject(ii); integrableObject != NULL;
156			integrableObject = mol->nextIntegrableObject(ii)) {
157
158	gezelter	2
159	gezelter	246	pos = integrableObject->getPos();
160			vel = integrableObject->getVel();
161	gezelter	2
162	gezelter	246	sprintf(tempBuffer, "%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t",
163			integrableObject->getType().c_str(),
164			pos[0], pos[1], pos[2],
165			vel[0], vel[1], vel[2]);
166	gezelter	2
167	gezelter	246	strcpy(writeLine, tempBuffer);
168	gezelter	2
169	gezelter	246	if (integrableObject->isDirectional()) {
170			q = integrableObject->getQ();
171			ji = integrableObject->getJ();
172	gezelter	2
173	gezelter	246	sprintf(tempBuffer, "%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\n",
174			q[0], q[1], q[2], q[3],
175			ji[0], ji[1], ji[2]);
176			strcat(writeLine, tempBuffer);
177			} else {
178			strcat(writeLine, "0.0\t0.0\t0.0\t0.0\t0.0\t0.0\t0.0\n");
179			}
180	gezelter	2
181	gezelter	246	os << writeLine;
182	gezelter	2
183	gezelter	246	}
184	gezelter	2	}
185
186	tim	324	os.flush();
187	gezelter	246	#else // is_mpi
188			/*********************************************************************
189			* Documentation? You want DOCUMENTATION?
190			*
191			* Why all the potatoes below?
192			*
193			* To make a long story short, the original version of DumpWriter
194			* worked in the most inefficient way possible. Node 0 would
195			* poke each of the node for an individual atom's formatted data
196			* as node 0 worked its way down the global index. This was particularly
197			* inefficient since the method blocked all processors at every atom
198			* (and did it twice!).
199			*
200			* An intermediate version of DumpWriter could be described from Node
201			* zero's perspective as follows:
202			*
203			* 1) Have 100 of your friends stand in a circle.
204			* 2) When you say go, have all of them start tossing potatoes at
205			* you (one at a time).
206			* 3) Catch the potatoes.
207			*
208			* It was an improvement, but MPI has buffers and caches that could
209			* best be described in this analogy as "potato nets", so there's no
210			* need to block the processors atom-by-atom.
211			*
212			* This new and improved DumpWriter works in an even more efficient
213			* way:
214			*
215			* 1) Have 100 of your friend stand in a circle.
216			* 2) When you say go, have them start tossing 5-pound bags of
217			* potatoes at you.
218			* 3) Once you've caught a friend's bag of potatoes,
219			* toss them a spud to let them know they can toss another bag.
220			*
221			* How's THAT for documentation?
222			*
223			*********************************************************************/
224			const int masterNode = 0;
225	gezelter	2
226	gezelter	246	int * potatoes;
227			int myPotato;
228			int nProc;
229			int which_node;
230			double atomData[13];
231			int isDirectional;
232			const char * atomTypeString;
233			char MPIatomTypeString[MINIBUFFERSIZE];
234			int msgLen; // the length of message actually recieved at master nodes
235			int haveError;
236			MPI_Status istatus;
237			int nCurObj;
238
239			// code to find maximum tag value
240			int * tagub;
241			int flag;
242			int MAXTAG;
243			MPI_Attr_get(MPI_COMM_WORLD, MPI_TAG_UB, &tagub, &flag);
244	gezelter	2
245	gezelter	246	if (flag) {
246			MAXTAG = *tagub;
247			} else {
248			MAXTAG = 32767;
249			}
250	gezelter	2
251	gezelter	246	if (worldRank == masterNode) { //master node (node 0) is responsible for writing the dump file
252	gezelter	2
253	gezelter	246	// Node 0 needs a list of the magic potatoes for each processor;
254	gezelter	2
255	gezelter	246	MPI_Comm_size(MPI_COMM_WORLD, &nProc);
256			potatoes = new int[nProc];
257	gezelter	2
258	gezelter	246	//write out the comment lines
259			for(int i = 0; i < nProc; i++) {
260			potatoes[i] = 0;
261			}
262	gezelter	2
263
264	gezelter	246	os << nTotObjects << "\n";
265			writeCommentLine(os, info_->getSnapshotManager()->getCurrentSnapshot());
266	gezelter	2
267	gezelter	246	for(int i = 0; i < info_->getNGlobalMolecules(); i++) {
268	gezelter	2
269	gezelter	246	// Get the Node number which has this atom;
270	gezelter	2
271	gezelter	246	which_node = info_->getMolToProc(i);
272	gezelter	2
273	gezelter	246	if (which_node != masterNode) { //current molecule is in slave node
274			if (potatoes[which_node] + 1 >= MAXTAG) {
275			// The potato was going to exceed the maximum value,
276			// so wrap this processor potato back to 0:
277	gezelter	2
278	gezelter	246	potatoes[which_node] = 0;
279			MPI_Send(&potatoes[which_node], 1, MPI_INT, which_node, 0,
280			MPI_COMM_WORLD);
281			}
282	gezelter	2
283	gezelter	246	myPotato = potatoes[which_node];
284	gezelter	2
285	gezelter	246	//recieve the number of integrableObject in current molecule
286			MPI_Recv(&nCurObj, 1, MPI_INT, which_node, myPotato,
287			MPI_COMM_WORLD, &istatus);
288			myPotato++;
289	gezelter	2
290	gezelter	246	for(int l = 0; l < nCurObj; l++) {
291			if (potatoes[which_node] + 2 >= MAXTAG) {
292			// The potato was going to exceed the maximum value,
293			// so wrap this processor potato back to 0:
294	gezelter	2
295	gezelter	246	potatoes[which_node] = 0;
296			MPI_Send(&potatoes[which_node], 1, MPI_INT, which_node,
297			0, MPI_COMM_WORLD);
298			}
299	gezelter	2
300	gezelter	246	MPI_Recv(MPIatomTypeString, MINIBUFFERSIZE, MPI_CHAR,
301			which_node, myPotato, MPI_COMM_WORLD,
302			&istatus);
303	gezelter	2
304	gezelter	246	atomTypeString = MPIatomTypeString;
305	gezelter	2
306	gezelter	246	myPotato++;
307	gezelter	2
308	gezelter	246	MPI_Recv(atomData, 13, MPI_DOUBLE, which_node, myPotato,
309			MPI_COMM_WORLD, &istatus);
310			myPotato++;
311	gezelter	2
312	gezelter	246	MPI_Get_count(&istatus, MPI_DOUBLE, &msgLen);
313	gezelter	2
314	gezelter	246	if (msgLen == 13)
315			isDirectional = 1;
316			else
317			isDirectional = 0;
318	gezelter	2
319	gezelter	246	// If we've survived to here, format the line:
320	gezelter	2
321	gezelter	246	if (!isDirectional) {
322			sprintf(writeLine, "%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t",
323			atomTypeString, atomData[0],
324			atomData[1], atomData[2],
325			atomData[3], atomData[4],
326			atomData[5]);
327	gezelter	2
328	gezelter	246	strcat(writeLine,
329			"0.0\t0.0\t0.0\t0.0\t0.0\t0.0\t0.0\n");
330			} else {
331			sprintf(writeLine,
332			"%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\n",
333			atomTypeString,
334			atomData[0],
335			atomData[1],
336			atomData[2],
337			atomData[3],
338			atomData[4],
339			atomData[5],
340			atomData[6],
341			atomData[7],
342			atomData[8],
343			atomData[9],
344			atomData[10],
345			atomData[11],
346			atomData[12]);
347			}
348	gezelter	2
349	gezelter	246	os << writeLine;
350	gezelter	2
351	gezelter	246	} // end for(int l =0)
352	gezelter	2
353	gezelter	246	potatoes[which_node] = myPotato;
354			} else { //master node has current molecule
355	gezelter	2
356	gezelter	246	mol = info_->getMoleculeByGlobalIndex(i);
357	gezelter	2
358	gezelter	246	if (mol == NULL) {
359			sprintf(painCave.errMsg, "Molecule not found on node %d!", worldRank);
360			painCave.isFatal = 1;
361			simError();
362			}
363
364			for (integrableObject = mol->beginIntegrableObject(ii); integrableObject != NULL;
365			integrableObject = mol->nextIntegrableObject(ii)) {
366
367			atomTypeString = integrableObject->getType().c_str();
368	gezelter	2
369	gezelter	246	pos = integrableObject->getPos();
370			vel = integrableObject->getVel();
371	gezelter	2
372	gezelter	246	atomData[0] = pos[0];
373			atomData[1] = pos[1];
374			atomData[2] = pos[2];
375	gezelter	2
376	gezelter	246	atomData[3] = vel[0];
377			atomData[4] = vel[1];
378			atomData[5] = vel[2];
379	gezelter	2
380	gezelter	246	isDirectional = 0;
381	gezelter	2
382	gezelter	246	if (integrableObject->isDirectional()) {
383			isDirectional = 1;
384	gezelter	2
385	gezelter	246	q = integrableObject->getQ();
386			ji = integrableObject->getJ();
387	gezelter	2
388	gezelter	246	for(int j = 0; j < 6; j++) {
389			atomData[j] = atomData[j];
390			}
391	gezelter	2
392	gezelter	246	atomData[6] = q[0];
393			atomData[7] = q[1];
394			atomData[8] = q[2];
395			atomData[9] = q[3];
396	gezelter	2
397	gezelter	246	atomData[10] = ji[0];
398			atomData[11] = ji[1];
399			atomData[12] = ji[2];
400			}
401	gezelter	2
402	gezelter	246	// If we've survived to here, format the line:
403	gezelter	2
404	gezelter	246	if (!isDirectional) {
405			sprintf(writeLine, "%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t",
406			atomTypeString, atomData[0],
407			atomData[1], atomData[2],
408			atomData[3], atomData[4],
409			atomData[5]);
410	gezelter	2
411	gezelter	246	strcat(writeLine,
412			"0.0\t0.0\t0.0\t0.0\t0.0\t0.0\t0.0\n");
413			} else {
414			sprintf(writeLine,
415			"%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\n",
416			atomTypeString,
417			atomData[0],
418			atomData[1],
419			atomData[2],
420			atomData[3],
421			atomData[4],
422			atomData[5],
423			atomData[6],
424			atomData[7],
425			atomData[8],
426			atomData[9],
427			atomData[10],
428			atomData[11],
429			atomData[12]);
430			}
431	gezelter	2
432
433	gezelter	246	os << writeLine;
434	gezelter	2
435	gezelter	246	} //end for(iter = integrableObject.begin())
436			}
437			} //end for(i = 0; i < mpiSim->getNmol())
438	gezelter	2
439	gezelter	246	os.flush();
440	tim	251
441	gezelter	246	sprintf(checkPointMsg, "Sucessfully took a dump.\n");
442			MPIcheckPoint();
443	gezelter	2
444	gezelter	246	delete [] potatoes;
445			} else {
446	gezelter	2
447	gezelter	246	// worldRank != 0, so I'm a remote node.
448	gezelter	2
449	gezelter	246	// Set my magic potato to 0:
450	gezelter	2
451	gezelter	246	myPotato = 0;
452	gezelter	2
453	gezelter	246	for(int i = 0; i < info_->getNGlobalMolecules(); i++) {
454	gezelter	2
455	gezelter	246	// Am I the node which has this integrableObject?
456			int whichNode = info_->getMolToProc(i);
457			if (whichNode == worldRank) {
458			if (myPotato + 1 >= MAXTAG) {
459	gezelter	2
460	gezelter	246	// The potato was going to exceed the maximum value,
461			// so wrap this processor potato back to 0 (and block until
462			// node 0 says we can go:
463	gezelter	2
464	gezelter	246	MPI_Recv(&myPotato, 1, MPI_INT, 0, 0, MPI_COMM_WORLD,
465			&istatus);
466			}
467	gezelter	2
468	gezelter	246	mol = info_->getMoleculeByGlobalIndex(i);
469
470	gezelter	2
471	gezelter	246	nCurObj = mol->getNIntegrableObjects();
472	gezelter	2
473	gezelter	246	MPI_Send(&nCurObj, 1, MPI_INT, 0, myPotato, MPI_COMM_WORLD);
474			myPotato++;
475	gezelter	2
476	gezelter	246	for (integrableObject = mol->beginIntegrableObject(ii); integrableObject != NULL;
477			integrableObject = mol->nextIntegrableObject(ii)) {
478	gezelter	2
479	gezelter	246	if (myPotato + 2 >= MAXTAG) {
480	gezelter	2
481	gezelter	246	// The potato was going to exceed the maximum value,
482			// so wrap this processor potato back to 0 (and block until
483			// node 0 says we can go:
484	gezelter	2
485	gezelter	246	MPI_Recv(&myPotato, 1, MPI_INT, 0, 0, MPI_COMM_WORLD,
486			&istatus);
487			}
488	gezelter	2
489	gezelter	246	atomTypeString = integrableObject->getType().c_str();
490	gezelter	2
491	gezelter	246	pos = integrableObject->getPos();
492			vel = integrableObject->getVel();
493	gezelter	2
494	gezelter	246	atomData[0] = pos[0];
495			atomData[1] = pos[1];
496			atomData[2] = pos[2];
497	gezelter	2
498	gezelter	246	atomData[3] = vel[0];
499			atomData[4] = vel[1];
500			atomData[5] = vel[2];
501	gezelter	2
502	gezelter	246	isDirectional = 0;
503	gezelter	2
504	gezelter	246	if (integrableObject->isDirectional()) {
505			isDirectional = 1;
506	gezelter	2
507	gezelter	246	q = integrableObject->getQ();
508			ji = integrableObject->getJ();
509	gezelter	2
510	gezelter	246	atomData[6] = q[0];
511			atomData[7] = q[1];
512			atomData[8] = q[2];
513			atomData[9] = q[3];
514
515			atomData[10] = ji[0];
516			atomData[11] = ji[1];
517			atomData[12] = ji[2];
518			}
519
520			strncpy(MPIatomTypeString, atomTypeString, MINIBUFFERSIZE);
521
522			// null terminate the std::string before sending (just in case):
523			MPIatomTypeString[MINIBUFFERSIZE - 1] = '\0';
524
525			MPI_Send(MPIatomTypeString, MINIBUFFERSIZE, MPI_CHAR, 0,
526			myPotato, MPI_COMM_WORLD);
527
528			myPotato++;
529
530			if (isDirectional) {
531			MPI_Send(atomData, 13, MPI_DOUBLE, 0, myPotato,
532			MPI_COMM_WORLD);
533			} else {
534			MPI_Send(atomData, 6, MPI_DOUBLE, 0, myPotato,
535			MPI_COMM_WORLD);
536			}
537
538			myPotato++;
539			}
540
541			}
542
543			}
544			sprintf(checkPointMsg, "Sucessfully took a dump.\n");
545			MPIcheckPoint();
546			}
547
548			#endif // is_mpi
549
550	gezelter	2	}
551
552	gezelter	246	}//end namespace oopse