src/io/DumpReader.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.
 */
 
#define _LARGEFILE_SOURCE64
#define _FILE_OFFSET_BITS 64

#include <sys/types.h>
#include <sys/stat.h>

#include <iostream>
#include <math.h>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "io/DumpReader.hpp"
#include "primitives/Molecule.hpp"
#include "utils/simError.h"
#include "utils/MemoryUtils.hpp"
#include "utils/StringTokenizer.hpp"

#ifdef IS_MPI

#include <mpi.h>
#define TAKE_THIS_TAG_CHAR 0
#define TAKE_THIS_TAG_INT 1

#endif // is_mpi


namespace oopse {

DumpReader::DumpReader(SimInfo* info, const std::string& filename)
                     : info_(info), filename_(filename), isScanned_(false), nframes_(0) {

#ifdef IS_MPI

    if (worldRank == 0) {
#endif

        inFile_ = fopen(filename_.c_str(), "r");

        if (inFile_ == NULL) {
            sprintf(painCave.errMsg, "DumpReader: Cannot open file: %s\n", filename_.c_str());
            painCave.isFatal = 1;
            simError();
        }

#ifdef IS_MPI

    }

    strcpy(checkPointMsg, "Dump file opened for reading successfully.");
    MPIcheckPoint();

#endif

    return;
}

DumpReader::~DumpReader() {

#ifdef IS_MPI

    if (worldRank == 0) {
#endif

        int error;
        error = fclose(inFile_);

        if (error) {
            sprintf(painCave.errMsg, "DumpReader Error: Error closing %s\n", filename_.c_str());
            painCave.isFatal = 1;            
            simError();
        }

        MemoryUtils::deleteVectorOfPointer(framePos_);

#ifdef IS_MPI

    }

    strcpy(checkPointMsg, "Dump file closed successfully.");
    MPIcheckPoint();

#endif

    return;
}

int DumpReader::getNFrames(void) {

    if (!isScanned_)
        scanFile();

    return nframes_;
}

void DumpReader::scanFile(void) {
  int i, j;
  int lineNum = 0;
  char readBuffer[maxBufferSize];
  fpos_t * currPos;

#ifdef IS_MPI

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

        rewind(inFile_);

        currPos = new fpos_t;
        fgetpos(inFile_, currPos);
        fgets(readBuffer, sizeof(readBuffer), inFile_);
        lineNum++;

        if (feof(inFile_)) {
            sprintf(painCave.errMsg,
                    "DumpReader Error: File \"%s\" ended unexpectedly at line %d\n",
                    filename_.c_str(),
                    lineNum);
            painCave.isFatal = 1;
            simError();
        }

        while (!feof(inFile_)) {
            framePos_.push_back(currPos);

            i = atoi(readBuffer);

            fgets(readBuffer, sizeof(readBuffer), inFile_);
            lineNum++;

            if (feof(inFile_)) {
                sprintf(painCave.errMsg,
                        "DumpReader Error: File \"%s\" ended unexpectedly at line %d\n",
                        filename_.c_str(),
                        lineNum);
                painCave.isFatal = 1;
                simError();
            }

            for(j = 0; j < i; j++) {
                fgets(readBuffer, sizeof(readBuffer), inFile_);
                lineNum++;

                if (feof(inFile_)) {
                    sprintf(painCave.errMsg,
                            "DumpReader Error: File \"%s\" ended unexpectedly at line %d,"
                                " with atom %d\n", filename_.c_str(),
                            lineNum,
                            j);

                    painCave.isFatal = 1;
                    simError();
                }
            }

            currPos = new fpos_t;
            fgetpos(inFile_, currPos);
            fgets(readBuffer, sizeof(readBuffer), inFile_);
            lineNum++;
        }

        delete currPos;
        rewind(inFile_);
        
        nframes_ = framePos_.size();
#ifdef IS_MPI
    }

    MPI_Bcast(&nframes_, 1, MPI_INT, 0, MPI_COMM_WORLD);

    strcpy(checkPointMsg, "Successfully scanned DumpFile\n");
    MPIcheckPoint();

#endif // is_mpi

    isScanned_ = true;
}

void DumpReader::readFrame(int whichFrame) {
    int storageLayout = info_->getSnapshotManager()->getStorageLayout();

    if (storageLayout & DataStorage::dslPosition) {
        needPos_ = true;
    } else {
        needPos_ = false;
    }

    if (storageLayout & DataStorage::dslVelocity) {
        needVel_ = true;
    } else {
        needVel_ = false;
    }

    if (storageLayout & DataStorage::dslAmat || storageLayout & DataStorage::dslElectroFrame) {
        needQuaternion_ = true;
    } else {
        needQuaternion_ = false;
    }

    if (storageLayout & DataStorage::dslAngularMomentum) {
        needAngMom_ = true;
    } else {
        needAngMom_ = false;    
    }

    readSet(whichFrame);
}

void DumpReader::readSet(int whichFrame) {
  int i;
  int nTotObjs;                  // the number of atoms
  char read_buffer[maxBufferSize];  //the line buffer for reading
  char * eof_test;               // ptr to see when we reach the end of the file

  Molecule* mol;
  StuntDouble* integrableObject;
  SimInfo::MoleculeIterator mi;
  Molecule::IntegrableObjectIterator ii;

#ifndef IS_MPI

    fsetpos(inFile_, framePos_[whichFrame]);
    eof_test = fgets(read_buffer, sizeof(read_buffer), inFile_);

    if (eof_test == NULL) {
        sprintf(painCave.errMsg,
                "DumpReader error: error reading 1st line of \"%s\"\n",
                filename_.c_str());
        painCave.isFatal = 1;
        simError();
    }

    nTotObjs = atoi(read_buffer);

    if (nTotObjs != info_->getNGlobalIntegrableObjects()) {
        sprintf(painCave.errMsg,
                "DumpReader error. %s nIntegrable, %d, "
                    "does not match the meta-data file's nIntegrable, %d.\n",
                filename_.c_str(),
                nTotObjs,
                info_->getNGlobalIntegrableObjects());

        painCave.isFatal = 1;
        simError();
    }

    //read the box mat from the comment line

    eof_test = fgets(read_buffer, sizeof(read_buffer), inFile_);

    if (eof_test == NULL) {
        sprintf(painCave.errMsg, "DumpReader Error: error in reading commment in %s\n",
                filename_.c_str());
        painCave.isFatal = 1;
        simError();
    }

    parseCommentLine(read_buffer, info_->getSnapshotManager()->getCurrentSnapshot());

    //parse dump lines

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

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

            eof_test = fgets(read_buffer, sizeof(read_buffer), inFile_);

            if (eof_test == NULL) {
                sprintf(painCave.errMsg,
                        "DumpReader Error: error in reading file %s\n"
                            "natoms  = %d; index = %d\n"
                            "error reading the line from the file.\n",
                        filename_.c_str(),
                        nTotObjs,
                        i);

                painCave.isFatal = 1;
                simError();
            }

            parseDumpLine(read_buffer, integrableObject);
            
            }
    }

    // MPI Section of code..........

#else //IS_MPI

    // first thing first, suspend fatalities.
    int masterNode = 0;
    int nCurObj;
    painCave.isEventLoop = 1;

    int myStatus; // 1 = wakeup & success; 0 = error; -1 = AllDone
    int haveError;

    MPI_Status istatus;
    int nitems;

    nTotObjs = info_->getNGlobalIntegrableObjects();
    haveError = 0;

    if (worldRank == masterNode) {
        fsetpos(inFile_, framePos_[whichFrame]);

        eof_test = fgets(read_buffer, sizeof(read_buffer), inFile_);

        if (eof_test == NULL) {
            sprintf(painCave.errMsg, "DumpReader Error: Error reading 1st line of %s \n ",
                    filename_.c_str());
            painCave.isFatal = 1;
            simError();
        }

        nitems = atoi(read_buffer);

        // Check to see that the number of integrable objects in the
        // intial configuration file is the same as derived from the
        // meta-data file.

        if (nTotObjs != nitems) {
            sprintf(painCave.errMsg,
                    "DumpReader Error. %s nIntegrable, %d, "
                        "does not match the meta-data file's nIntegrable, %d.\n",
                    filename_.c_str(),
                    nTotObjs,
                    info_->getNGlobalIntegrableObjects());

            painCave.isFatal = 1;
            simError();
        }

        //read the boxMat from the comment line

        eof_test = fgets(read_buffer, sizeof(read_buffer), inFile_);

        if (eof_test == NULL) {
            sprintf(painCave.errMsg, "DumpReader Error: error in reading commment in %s\n",
                    filename_.c_str());
            painCave.isFatal = 1;
            simError();
        }

        //Every single processor will parse the comment line by itself
        //By using this way, we might lose some efficiency, but if we want to add
        //more parameters into comment line, we only need to modify function
        //parseCommentLine

        MPI_Bcast(read_buffer, maxBufferSize, MPI_CHAR, masterNode, MPI_COMM_WORLD);
        parseCommentLine(read_buffer, info_->getSnapshotManager()->getCurrentSnapshot());

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

            if (which_node == masterNode) {
                //molecules belong to master node

                mol = info_->getMoleculeByGlobalIndex(i);

                if (mol == NULL) {
                    sprintf(painCave.errMsg, "DumpReader Error: Molecule not found on node %d!", worldRank);
                        painCave.isFatal = 1;
                    simError();
                }

                for (integrableObject = mol->beginIntegrableObject(ii); integrableObject != NULL; 
                       integrableObject = mol->nextIntegrableObject(ii)){
                        
                    eof_test = fgets(read_buffer, sizeof(read_buffer), inFile_);

                    if (eof_test == NULL) {
                        sprintf(painCave.errMsg,
                                "DumpReader Error: error in reading file %s\n"
                                    "natoms  = %d; index = %d\n"
                                    "error reading the line from the file.\n",
                                filename_.c_str(),
                                nTotObjs,
                                i);

                        painCave.isFatal = 1;
                        simError();
                    }

                    parseDumpLine(read_buffer, integrableObject);
                }
            } else {
                //molecule belongs to slave nodes

                MPI_Recv(&nCurObj, 1, MPI_INT, which_node, TAKE_THIS_TAG_INT,
                         MPI_COMM_WORLD, &istatus);

                for(int j = 0; j < nCurObj; j++) {
                    eof_test = fgets(read_buffer, sizeof(read_buffer), inFile_);

                    if (eof_test == NULL) {
                        sprintf(painCave.errMsg,
                                "DumpReader Error: error in reading file %s\n"
                                    "natoms  = %d; index = %d\n"
                                    "error reading the line from the file.\n",
                                filename_.c_str(),
                                nTotObjs,
                                i);

                        painCave.isFatal = 1;
                        simError();
                    }
                    
                    MPI_Send(read_buffer, maxBufferSize, MPI_CHAR, which_node,
                             TAKE_THIS_TAG_CHAR, MPI_COMM_WORLD);
                }
            }
        }
    } else {
        //actions taken at slave nodes
        MPI_Bcast(read_buffer, maxBufferSize, MPI_CHAR, masterNode, MPI_COMM_WORLD);

        /**@todo*/
        parseCommentLine(read_buffer, info_->getSnapshotManager()->getCurrentSnapshot());

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

            if (which_node == worldRank) {
                //molecule with global index i belongs to this processor
                
                mol = info_->getMoleculeByGlobalIndex(i);
                if (mol == NULL) {
                    sprintf(painCave.errMsg, "DumpReader Error: Molecule not found on node %d!", worldRank);
                    painCave.isFatal = 1;
                    simError();
                }
                
                nCurObj = mol->getNIntegrableObjects();

                MPI_Send(&nCurObj, 1, MPI_INT, masterNode, TAKE_THIS_TAG_INT,
                         MPI_COMM_WORLD);

                for (integrableObject = mol->beginIntegrableObject(ii); integrableObject != NULL; 
                       integrableObject = mol->nextIntegrableObject(ii)){
                        
                    MPI_Recv(read_buffer, maxBufferSize, MPI_CHAR, masterNode,
                             TAKE_THIS_TAG_CHAR, MPI_COMM_WORLD, &istatus);

                    parseDumpLine(read_buffer, integrableObject);
                }
                       
            }
            
        }
        
    }

#endif

}

void DumpReader::parseDumpLine(char *line, StuntDouble *integrableObject) {

    Vector3d pos;  // position place holders
    Vector3d vel;  // velocity placeholders
    Quat4d q;    // the quaternions
    Vector3d ji;   // angular velocity placeholders;
    StringTokenizer tokenizer(line);
    int nTokens;
    
    nTokens = tokenizer.countTokens();

    if (nTokens < 14) {
            sprintf(painCave.errMsg,
                    "DumpReader Error: Not enough Tokens.\n");
            painCave.isFatal = 1;
            simError();
    }

    std::string name = tokenizer.nextToken();

    if (name != integrableObject->getType()) {

            sprintf(painCave.errMsg,
                    "DumpReader Error: Atom type [%s] in %s does not match Atom Type [%s] in .md file.\n",
                    name.c_str(), filename_.c_str(), integrableObject->getType().c_str());
            painCave.isFatal = 1;
            simError();        
    }

    pos[0] = tokenizer.nextTokenAsDouble();
    pos[1] = tokenizer.nextTokenAsDouble();
    pos[2] = tokenizer.nextTokenAsDouble();
    if (needPos_) {
        integrableObject->setPos(pos);
    }
    
    vel[0] = tokenizer.nextTokenAsDouble();
    vel[1] = tokenizer.nextTokenAsDouble();
    vel[2] = tokenizer.nextTokenAsDouble();
    if (needVel_) {
        integrableObject->setVel(vel);
    }
    
    if (integrableObject->isDirectional()) {
        
        q[0] = tokenizer.nextTokenAsDouble();
        q[1] = tokenizer.nextTokenAsDouble();
        q[2] = tokenizer.nextTokenAsDouble();
        q[3] = tokenizer.nextTokenAsDouble();

        double qlen = q.length();
        if (qlen < oopse::epsilon) { //check quaternion is not equal to 0
            
            sprintf(painCave.errMsg,
                    "DumpReader Error: initial quaternion error (q0^2 + q1^2 + q2^2 + q3^2 ~ 0).\n");
            painCave.isFatal = 1;
            simError();
            
        } 

        q.normalize();
        if (needQuaternion_) {           
            integrableObject->setQ(q);
        }

        ji[0] = tokenizer.nextTokenAsDouble();
        ji[1] = tokenizer.nextTokenAsDouble();
        ji[2] = tokenizer.nextTokenAsDouble();
        if (needAngMom_) {
            integrableObject->setJ(ji);
        }
    }

}


void DumpReader::parseCommentLine(char* line, Snapshot* s) {
    double currTime;
    Mat3x3d hmat;
    double chi;
    double integralOfChiDt;
    Mat3x3d eta;

    StringTokenizer tokenizer(line);
    int nTokens;

    nTokens = tokenizer.countTokens();

    //comment line should at least contain 10 tokens: current time(1 token) and  h-matrix(9 tokens)
    if (nTokens < 10) {
            sprintf(painCave.errMsg,
                    "DumpReader Error: Not enough tokens in comment line: %s", line);
            painCave.isFatal = 1;
            simError();   
    }

    //read current time
    currTime = tokenizer.nextTokenAsDouble();
    s->setTime(currTime);
    
    //read h-matrix
    hmat(0, 0) = tokenizer.nextTokenAsDouble();
    hmat(0, 1) = tokenizer.nextTokenAsDouble();
    hmat(0, 2) = tokenizer.nextTokenAsDouble();
    hmat(1, 0) = tokenizer.nextTokenAsDouble();
    hmat(1, 1) = tokenizer.nextTokenAsDouble();
    hmat(1, 2) = tokenizer.nextTokenAsDouble();
    hmat(2, 0) = tokenizer.nextTokenAsDouble();
    hmat(2, 1) = tokenizer.nextTokenAsDouble();
    hmat(2, 2) = tokenizer.nextTokenAsDouble();
    s->setHmat(hmat);
    
    //read chi and integralOfChidt, they should apprear in pair
    if (tokenizer.countTokens() >= 2) {
        chi = tokenizer.nextTokenAsDouble();
        integralOfChiDt = tokenizer.nextTokenAsDouble();            

        s->setChi(chi);
        s->setIntegralOfChiDt(integralOfChiDt);
    }
    
    //read eta (eta is 3x3 matrix)
    if (tokenizer.countTokens() >= 9) {
        eta(0, 0) = tokenizer.nextTokenAsDouble();
        eta(0, 1) = tokenizer.nextTokenAsDouble();
        eta(0, 2) = tokenizer.nextTokenAsDouble();
        eta(1, 0) = tokenizer.nextTokenAsDouble();
        eta(1, 1) = tokenizer.nextTokenAsDouble();
        eta(1, 2) = tokenizer.nextTokenAsDouble();
        eta(2, 0) = tokenizer.nextTokenAsDouble();
        eta(2, 1) = tokenizer.nextTokenAsDouble();
        eta(2, 2) = tokenizer.nextTokenAsDouble();      

        s->setEta(eta);
    }

    
}

}//end namespace oopse
Revision:	318
Committed:	Sun Feb 13 06:57:48 2005 UTC (20 years, 8 months ago) by tim
File size:	19670 byte(s)
Log Message:	adding dynamicProps
#	Content
1	/*
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	#define _LARGEFILE_SOURCE64
43	#define _FILE_OFFSET_BITS 64
44
45	#include <sys/types.h>
46	#include <sys/stat.h>
47
48	#include <iostream>
49	#include <math.h>
50
51	#include <stdio.h>
52	#include <stdlib.h>
53	#include <string.h>
54
55	#include "io/DumpReader.hpp"
56	#include "primitives/Molecule.hpp"
57	#include "utils/simError.h"
58	#include "utils/MemoryUtils.hpp"
59	#include "utils/StringTokenizer.hpp"
60
61	#ifdef IS_MPI
62
63	#include <mpi.h>
64	#define TAKE_THIS_TAG_CHAR 0
65	#define TAKE_THIS_TAG_INT 1
66
67	#endif // is_mpi
68
69
70	namespace oopse {
71
72	DumpReader::DumpReader(SimInfo* info, const std::string& filename)
73	: info_(info), filename_(filename), isScanned_(false), nframes_(0) {
74
75	#ifdef IS_MPI
76
77	if (worldRank == 0) {
78	#endif
79
80	inFile_ = fopen(filename_.c_str(), "r");
81
82	if (inFile_ == NULL) {
83	sprintf(painCave.errMsg, "DumpReader: Cannot open file: %s\n", filename_.c_str());
84	painCave.isFatal = 1;
85	simError();
86	}
87
88	#ifdef IS_MPI
89
90	}
91
92	strcpy(checkPointMsg, "Dump file opened for reading successfully.");
93	MPIcheckPoint();
94
95	#endif
96
97	return;
98	}
99
100	DumpReader::~DumpReader() {
101
102	#ifdef IS_MPI
103
104	if (worldRank == 0) {
105	#endif
106
107	int error;
108	error = fclose(inFile_);
109
110	if (error) {
111	sprintf(painCave.errMsg, "DumpReader Error: Error closing %s\n", filename_.c_str());
112	painCave.isFatal = 1;
113	simError();
114	}
115
116	MemoryUtils::deleteVectorOfPointer(framePos_);
117
118	#ifdef IS_MPI
119
120	}
121
122	strcpy(checkPointMsg, "Dump file closed successfully.");
123	MPIcheckPoint();
124
125	#endif
126
127	return;
128	}
129
130	int DumpReader::getNFrames(void) {
131
132	if (!isScanned_)
133	scanFile();
134
135	return nframes_;
136	}
137
138	void DumpReader::scanFile(void) {
139	int i, j;
140	int lineNum = 0;
141	char readBuffer[maxBufferSize];
142	fpos_t * currPos;
143
144	#ifdef IS_MPI
145
146	if (worldRank == 0) {
147	#endif // is_mpi
148
149	rewind(inFile_);
150
151	currPos = new fpos_t;
152	fgetpos(inFile_, currPos);
153	fgets(readBuffer, sizeof(readBuffer), inFile_);
154	lineNum++;
155
156	if (feof(inFile_)) {
157	sprintf(painCave.errMsg,
158	"DumpReader Error: File \"%s\" ended unexpectedly at line %d\n",
159	filename_.c_str(),
160	lineNum);
161	painCave.isFatal = 1;
162	simError();
163	}
164
165	while (!feof(inFile_)) {
166	framePos_.push_back(currPos);
167
168	i = atoi(readBuffer);
169
170	fgets(readBuffer, sizeof(readBuffer), inFile_);
171	lineNum++;
172
173	if (feof(inFile_)) {
174	sprintf(painCave.errMsg,
175	"DumpReader Error: File \"%s\" ended unexpectedly at line %d\n",
176	filename_.c_str(),
177	lineNum);
178	painCave.isFatal = 1;
179	simError();
180	}
181
182	for(j = 0; j < i; j++) {
183	fgets(readBuffer, sizeof(readBuffer), inFile_);
184	lineNum++;
185
186	if (feof(inFile_)) {
187	sprintf(painCave.errMsg,
188	"DumpReader Error: File \"%s\" ended unexpectedly at line %d,"
189	" with atom %d\n", filename_.c_str(),
190	lineNum,
191	j);
192
193	painCave.isFatal = 1;
194	simError();
195	}
196	}
197
198	currPos = new fpos_t;
199	fgetpos(inFile_, currPos);
200	fgets(readBuffer, sizeof(readBuffer), inFile_);
201	lineNum++;
202	}
203
204	delete currPos;
205	rewind(inFile_);
206
207	nframes_ = framePos_.size();
208	#ifdef IS_MPI
209	}
210
211	MPI_Bcast(&nframes_, 1, MPI_INT, 0, MPI_COMM_WORLD);
212
213	strcpy(checkPointMsg, "Successfully scanned DumpFile\n");
214	MPIcheckPoint();
215
216	#endif // is_mpi
217
218	isScanned_ = true;
219	}
220
221	void DumpReader::readFrame(int whichFrame) {
222	int storageLayout = info_->getSnapshotManager()->getStorageLayout();
223
224	if (storageLayout & DataStorage::dslPosition) {
225	needPos_ = true;
226	} else {
227	needPos_ = false;
228	}
229
230	if (storageLayout & DataStorage::dslVelocity) {
231	needVel_ = true;
232	} else {
233	needVel_ = false;
234	}
235
236	if (storageLayout & DataStorage::dslAmat \|\| storageLayout & DataStorage::dslElectroFrame) {
237	needQuaternion_ = true;
238	} else {
239	needQuaternion_ = false;
240	}
241
242	if (storageLayout & DataStorage::dslAngularMomentum) {
243	needAngMom_ = true;
244	} else {
245	needAngMom_ = false;
246	}
247
248	readSet(whichFrame);
249	}
250
251	void DumpReader::readSet(int whichFrame) {
252	int i;
253	int nTotObjs; // the number of atoms
254	char read_buffer[maxBufferSize]; //the line buffer for reading
255	char * eof_test; // ptr to see when we reach the end of the file
256
257	Molecule* mol;
258	StuntDouble* integrableObject;
259	SimInfo::MoleculeIterator mi;
260	Molecule::IntegrableObjectIterator ii;
261
262	#ifndef IS_MPI
263
264	fsetpos(inFile_, framePos_[whichFrame]);
265	eof_test = fgets(read_buffer, sizeof(read_buffer), inFile_);
266
267	if (eof_test == NULL) {
268	sprintf(painCave.errMsg,
269	"DumpReader error: error reading 1st line of \"%s\"\n",
270	filename_.c_str());
271	painCave.isFatal = 1;
272	simError();
273	}
274
275	nTotObjs = atoi(read_buffer);
276
277	if (nTotObjs != info_->getNGlobalIntegrableObjects()) {
278	sprintf(painCave.errMsg,
279	"DumpReader error. %s nIntegrable, %d, "
280	"does not match the meta-data file's nIntegrable, %d.\n",
281	filename_.c_str(),
282	nTotObjs,
283	info_->getNGlobalIntegrableObjects());
284
285	painCave.isFatal = 1;
286	simError();
287	}
288
289	//read the box mat from the comment line
290
291	eof_test = fgets(read_buffer, sizeof(read_buffer), inFile_);
292
293	if (eof_test == NULL) {
294	sprintf(painCave.errMsg, "DumpReader Error: error in reading commment in %s\n",
295	filename_.c_str());
296	painCave.isFatal = 1;
297	simError();
298	}
299
300	parseCommentLine(read_buffer, info_->getSnapshotManager()->getCurrentSnapshot());
301
302	//parse dump lines
303
304	for (mol = info_->beginMolecule(mi); mol != NULL; mol = info_->nextMolecule(mi)) {
305
306	for (integrableObject = mol->beginIntegrableObject(ii); integrableObject != NULL;
307	integrableObject = mol->nextIntegrableObject(ii)) {
308
309	eof_test = fgets(read_buffer, sizeof(read_buffer), inFile_);
310
311	if (eof_test == NULL) {
312	sprintf(painCave.errMsg,
313	"DumpReader Error: error in reading file %s\n"
314	"natoms = %d; index = %d\n"
315	"error reading the line from the file.\n",
316	filename_.c_str(),
317	nTotObjs,
318	i);
319
320	painCave.isFatal = 1;
321	simError();
322	}
323
324	parseDumpLine(read_buffer, integrableObject);
325
326	}
327	}
328
329	// MPI Section of code..........
330
331	#else //IS_MPI
332
333	// first thing first, suspend fatalities.
334	int masterNode = 0;
335	int nCurObj;
336	painCave.isEventLoop = 1;
337
338	int myStatus; // 1 = wakeup & success; 0 = error; -1 = AllDone
339	int haveError;
340
341	MPI_Status istatus;
342	int nitems;
343
344	nTotObjs = info_->getNGlobalIntegrableObjects();
345	haveError = 0;
346
347	if (worldRank == masterNode) {
348	fsetpos(inFile_, framePos_[whichFrame]);
349
350	eof_test = fgets(read_buffer, sizeof(read_buffer), inFile_);
351
352	if (eof_test == NULL) {
353	sprintf(painCave.errMsg, "DumpReader Error: Error reading 1st line of %s \n ",
354	filename_.c_str());
355	painCave.isFatal = 1;
356	simError();
357	}
358
359	nitems = atoi(read_buffer);
360
361	// Check to see that the number of integrable objects in the
362	// intial configuration file is the same as derived from the
363	// meta-data file.
364
365	if (nTotObjs != nitems) {
366	sprintf(painCave.errMsg,
367	"DumpReader Error. %s nIntegrable, %d, "
368	"does not match the meta-data file's nIntegrable, %d.\n",
369	filename_.c_str(),
370	nTotObjs,
371	info_->getNGlobalIntegrableObjects());
372
373	painCave.isFatal = 1;
374	simError();
375	}
376
377	//read the boxMat from the comment line
378
379	eof_test = fgets(read_buffer, sizeof(read_buffer), inFile_);
380
381	if (eof_test == NULL) {
382	sprintf(painCave.errMsg, "DumpReader Error: error in reading commment in %s\n",
383	filename_.c_str());
384	painCave.isFatal = 1;
385	simError();
386	}
387
388	//Every single processor will parse the comment line by itself
389	//By using this way, we might lose some efficiency, but if we want to add
390	//more parameters into comment line, we only need to modify function
391	//parseCommentLine
392
393	MPI_Bcast(read_buffer, maxBufferSize, MPI_CHAR, masterNode, MPI_COMM_WORLD);
394	parseCommentLine(read_buffer, info_->getSnapshotManager()->getCurrentSnapshot());
395
396	for(i = 0; i < info_->getNGlobalMolecules(); i++) {
397	int which_node = info_->getMolToProc(i);
398
399	if (which_node == masterNode) {
400	//molecules belong to master node
401
402	mol = info_->getMoleculeByGlobalIndex(i);
403
404	if (mol == NULL) {
405	sprintf(painCave.errMsg, "DumpReader Error: Molecule not found on node %d!", worldRank);
406	painCave.isFatal = 1;
407	simError();
408	}
409
410	for (integrableObject = mol->beginIntegrableObject(ii); integrableObject != NULL;
411	integrableObject = mol->nextIntegrableObject(ii)){
412
413	eof_test = fgets(read_buffer, sizeof(read_buffer), inFile_);
414
415	if (eof_test == NULL) {
416	sprintf(painCave.errMsg,
417	"DumpReader Error: error in reading file %s\n"
418	"natoms = %d; index = %d\n"
419	"error reading the line from the file.\n",
420	filename_.c_str(),
421	nTotObjs,
422	i);
423
424	painCave.isFatal = 1;
425	simError();
426	}
427
428	parseDumpLine(read_buffer, integrableObject);
429	}
430	} else {
431	//molecule belongs to slave nodes
432
433	MPI_Recv(&nCurObj, 1, MPI_INT, which_node, TAKE_THIS_TAG_INT,
434	MPI_COMM_WORLD, &istatus);
435
436	for(int j = 0; j < nCurObj; j++) {
437	eof_test = fgets(read_buffer, sizeof(read_buffer), inFile_);
438
439	if (eof_test == NULL) {
440	sprintf(painCave.errMsg,
441	"DumpReader Error: error in reading file %s\n"
442	"natoms = %d; index = %d\n"
443	"error reading the line from the file.\n",
444	filename_.c_str(),
445	nTotObjs,
446	i);
447
448	painCave.isFatal = 1;
449	simError();
450	}
451
452	MPI_Send(read_buffer, maxBufferSize, MPI_CHAR, which_node,
453	TAKE_THIS_TAG_CHAR, MPI_COMM_WORLD);
454	}
455	}
456	}
457	} else {
458	//actions taken at slave nodes
459	MPI_Bcast(read_buffer, maxBufferSize, MPI_CHAR, masterNode, MPI_COMM_WORLD);
460
461	/*@todo/
462	parseCommentLine(read_buffer, info_->getSnapshotManager()->getCurrentSnapshot());
463
464	for(i = 0; i < info_->getNGlobalMolecules(); i++) {
465	int which_node = info_->getMolToProc(i);
466
467	if (which_node == worldRank) {
468	//molecule with global index i belongs to this processor
469
470	mol = info_->getMoleculeByGlobalIndex(i);
471	if (mol == NULL) {
472	sprintf(painCave.errMsg, "DumpReader Error: Molecule not found on node %d!", worldRank);
473	painCave.isFatal = 1;
474	simError();
475	}
476
477	nCurObj = mol->getNIntegrableObjects();
478
479	MPI_Send(&nCurObj, 1, MPI_INT, masterNode, TAKE_THIS_TAG_INT,
480	MPI_COMM_WORLD);
481
482	for (integrableObject = mol->beginIntegrableObject(ii); integrableObject != NULL;
483	integrableObject = mol->nextIntegrableObject(ii)){
484
485	MPI_Recv(read_buffer, maxBufferSize, MPI_CHAR, masterNode,
486	TAKE_THIS_TAG_CHAR, MPI_COMM_WORLD, &istatus);
487
488	parseDumpLine(read_buffer, integrableObject);
489	}
490
491	}
492
493	}
494
495	}
496
497	#endif
498
499	}
500
501	void DumpReader::parseDumpLine(char line, StuntDouble integrableObject) {
502
503	Vector3d pos; // position place holders
504	Vector3d vel; // velocity placeholders
505	Quat4d q; // the quaternions
506	Vector3d ji; // angular velocity placeholders;
507	StringTokenizer tokenizer(line);
508	int nTokens;
509
510	nTokens = tokenizer.countTokens();
511
512	if (nTokens < 14) {
513	sprintf(painCave.errMsg,
514	"DumpReader Error: Not enough Tokens.\n");
515	painCave.isFatal = 1;
516	simError();
517	}
518
519	std::string name = tokenizer.nextToken();
520
521	if (name != integrableObject->getType()) {
522
523	sprintf(painCave.errMsg,
524	"DumpReader Error: Atom type [%s] in %s does not match Atom Type [%s] in .md file.\n",
525	name.c_str(), filename_.c_str(), integrableObject->getType().c_str());
526	painCave.isFatal = 1;
527	simError();
528	}
529
530	pos[0] = tokenizer.nextTokenAsDouble();
531	pos[1] = tokenizer.nextTokenAsDouble();
532	pos[2] = tokenizer.nextTokenAsDouble();
533	if (needPos_) {
534	integrableObject->setPos(pos);
535	}
536
537	vel[0] = tokenizer.nextTokenAsDouble();
538	vel[1] = tokenizer.nextTokenAsDouble();
539	vel[2] = tokenizer.nextTokenAsDouble();
540	if (needVel_) {
541	integrableObject->setVel(vel);
542	}
543
544	if (integrableObject->isDirectional()) {
545
546	q[0] = tokenizer.nextTokenAsDouble();
547	q[1] = tokenizer.nextTokenAsDouble();
548	q[2] = tokenizer.nextTokenAsDouble();
549	q[3] = tokenizer.nextTokenAsDouble();
550
551	double qlen = q.length();
552	if (qlen < oopse::epsilon) { //check quaternion is not equal to 0
553
554	sprintf(painCave.errMsg,
555	"DumpReader Error: initial quaternion error (q0^2 + q1^2 + q2^2 + q3^2 ~ 0).\n");
556	painCave.isFatal = 1;
557	simError();
558
559	}
560
561	q.normalize();
562	if (needQuaternion_) {
563	integrableObject->setQ(q);
564	}
565
566	ji[0] = tokenizer.nextTokenAsDouble();
567	ji[1] = tokenizer.nextTokenAsDouble();
568	ji[2] = tokenizer.nextTokenAsDouble();
569	if (needAngMom_) {
570	integrableObject->setJ(ji);
571	}
572	}
573
574	}
575
576
577	void DumpReader::parseCommentLine(char* line, Snapshot* s) {
578	double currTime;
579	Mat3x3d hmat;
580	double chi;
581	double integralOfChiDt;
582	Mat3x3d eta;
583
584	StringTokenizer tokenizer(line);
585	int nTokens;
586
587	nTokens = tokenizer.countTokens();
588
589	//comment line should at least contain 10 tokens: current time(1 token) and h-matrix(9 tokens)
590	if (nTokens < 10) {
591	sprintf(painCave.errMsg,
592	"DumpReader Error: Not enough tokens in comment line: %s", line);
593	painCave.isFatal = 1;
594	simError();
595	}
596
597	//read current time
598	currTime = tokenizer.nextTokenAsDouble();
599	s->setTime(currTime);
600
601	//read h-matrix
602	hmat(0, 0) = tokenizer.nextTokenAsDouble();
603	hmat(0, 1) = tokenizer.nextTokenAsDouble();
604	hmat(0, 2) = tokenizer.nextTokenAsDouble();
605	hmat(1, 0) = tokenizer.nextTokenAsDouble();
606	hmat(1, 1) = tokenizer.nextTokenAsDouble();
607	hmat(1, 2) = tokenizer.nextTokenAsDouble();
608	hmat(2, 0) = tokenizer.nextTokenAsDouble();
609	hmat(2, 1) = tokenizer.nextTokenAsDouble();
610	hmat(2, 2) = tokenizer.nextTokenAsDouble();
611	s->setHmat(hmat);
612
613	//read chi and integralOfChidt, they should apprear in pair
614	if (tokenizer.countTokens() >= 2) {
615	chi = tokenizer.nextTokenAsDouble();
616	integralOfChiDt = tokenizer.nextTokenAsDouble();
617
618	s->setChi(chi);
619	s->setIntegralOfChiDt(integralOfChiDt);
620	}
621
622	//read eta (eta is 3x3 matrix)
623	if (tokenizer.countTokens() >= 9) {
624	eta(0, 0) = tokenizer.nextTokenAsDouble();
625	eta(0, 1) = tokenizer.nextTokenAsDouble();
626	eta(0, 2) = tokenizer.nextTokenAsDouble();
627	eta(1, 0) = tokenizer.nextTokenAsDouble();
628	eta(1, 1) = tokenizer.nextTokenAsDouble();
629	eta(1, 2) = tokenizer.nextTokenAsDouble();
630	eta(2, 0) = tokenizer.nextTokenAsDouble();
631	eta(2, 1) = tokenizer.nextTokenAsDouble();
632	eta(2, 2) = tokenizer.nextTokenAsDouble();
633
634	s->setEta(eta);
635	}
636
637
638	}
639
640	}//end namespace oopse