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Comparing trunk/OOPSE-2.0/src/io/DumpReader.cpp (file contents):
Revision 2334 by gezelter, Wed Sep 28 16:32:30 2005 UTC vs.
Revision 2420 by chrisfen, Tue Nov 8 13:32:27 2005 UTC

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

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