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root/group/trunk/OOPSE/libmdtools/DumpWriter.cpp
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Comparing trunk/OOPSE/libmdtools/DumpWriter.cpp (file contents):
Revision 829 by gezelter, Tue Oct 28 16:03:37 2003 UTC vs.
Revision 947 by gezelter, Thu Jan 15 14:22:16 2004 UTC

# Line 3 | Line 3
3   #include <string.h>
4   #include <iostream>
5   #include <fstream>
6 + #include <algorithm>
7 + #include <utility>
8  
9   #ifdef IS_MPI
10   #include <mpi.h>
11   #include "mpiSimulation.hpp"
10 – #define TAKE_THIS_TAG_CHAR 1
11 – #define TAKE_THIS_TAG_INT 2
12  
13   namespace dWrite{
14 <  void nodeZeroError( void );
15 <  void anonymousNodeDie( void );
14 >  void DieDieDie( void );
15   }
16  
17   using namespace dWrite;
# Line 28 | Line 27 | DumpWriter::DumpWriter( SimInfo* the_entry_plug ){
27   #ifdef IS_MPI
28    if(worldRank == 0 ){
29   #endif // is_mpi
30 <    
31 <    strcpy( outName, entry_plug->sampleName );
32 <    
33 <    outFile.open(outName, ios::out | ios::trunc );
34 <    
35 <    if( !outFile ){
37 <      
30 >
31 >
32 >    dumpFile.open(entry_plug->sampleName, ios::out | ios::trunc );
33 >
34 >    if( !dumpFile ){
35 >
36        sprintf( painCave.errMsg,
37                 "Could not open \"%s\" for dump output.\n",
38 <               outName);
38 >               entry_plug->sampleName);
39        painCave.isFatal = 1;
40        simError();
41      }
42  
45 –    //outFile.setf( ios::scientific );
46 –
43   #ifdef IS_MPI
44    }
45  
46 +  //sort the local atoms by global index
47 +  sortByGlobalIndex();
48 +  
49    sprintf( checkPointMsg,
50             "Sucessfully opened output file for dumping.\n");
51    MPIcheckPoint();
# Line 59 | Line 58 | DumpWriter::~DumpWriter( ){
58    if(worldRank == 0 ){
59   #endif // is_mpi
60  
61 <    outFile.close();
61 >    dumpFile.close();
62  
63   #ifdef IS_MPI
64    }
65   #endif // is_mpi
66   }
67  
68 < void DumpWriter::writeDump( double currentTime ){
68 > #ifdef IS_MPI
69 >
70 > /**
71 > * A hook function to load balancing
72 > */
73 >
74 > void DumpWriter::update(){
75 >  sortByGlobalIndex();          
76 > }
77    
78 + /**
79 + * Auxiliary sorting function
80 + */
81 +
82 + bool indexSortingCriterion(const pair<int, int>& p1, const pair<int, int>& p2){
83 +  return p1.second < p2.second;
84 + }
85 +
86 + /**
87 + * Sorting the local index by global index
88 + */
89 +
90 + void DumpWriter::sortByGlobalIndex(){
91 +  Atom** atoms = entry_plug->atoms;
92 +  
93 +  indexArray.clear();
94 +  
95 +  for(int i = 0; i < mpiSim->getMyNlocal();i++)
96 +    indexArray.push_back(make_pair(i, atoms[i]->getGlobalIndex()));
97 +  
98 +  sort(indexArray.begin(), indexArray.end(), indexSortingCriterion);    
99 + }
100 + #endif
101 +
102 + void DumpWriter::writeDump(double currentTime){
103 +
104 +  ofstream finalOut;
105 +  vector<ofstream*> fileStreams;
106 +
107 + #ifdef IS_MPI
108 +  if(worldRank == 0 ){
109 +    
110 +    finalOut.open( entry_plug->finalName, ios::out | ios::trunc );
111 +    if( !finalOut ){
112 +      sprintf( painCave.errMsg,
113 +               "Could not open \"%s\" for final dump output.\n",
114 +               entry_plug->finalName );
115 +      painCave.isFatal = 1;
116 +      simError();
117 +    }
118 +  }
119 + #endif // is_mpi
120 +
121 +  fileStreams.push_back(&finalOut);
122 +  fileStreams.push_back(&dumpFile);
123 +
124 +  writeFrame(fileStreams, currentTime);
125 +
126 + #ifdef IS_MPI
127 +  finalOut.close();
128 + #endif
129 +        
130 + }
131 +
132 + void DumpWriter::writeFinal(double currentTime){
133 +
134 +  ofstream finalOut;
135 +  vector<ofstream*> fileStreams;
136 +
137 + #ifdef IS_MPI
138 +  if(worldRank == 0 ){
139 +
140 +    finalOut.open( entry_plug->finalName, ios::out | ios::trunc );
141 +
142 +    if( !finalOut ){
143 +      sprintf( painCave.errMsg,
144 +               "Could not open \"%s\" for final dump output.\n",
145 +               entry_plug->finalName );
146 +      painCave.isFatal = 1;
147 +      simError();
148 +    }
149 +
150 +  }
151 + #endif // is_mpi
152 +  
153 +  fileStreams.push_back(&finalOut);  
154 +  writeFrame(fileStreams, currentTime);
155 +
156 + #ifdef IS_MPI
157 +  finalOut.close();
158 + #endif
159 +  
160 + }
161 +
162 + void DumpWriter::writeFrame( vector<ofstream*>& outFile, double currentTime ){
163 +
164    const int BUFFERSIZE = 2000;
165 <  char tempBuffer[BUFFERSIZE];
165 >  const int MINIBUFFERSIZE = 100;
166 >
167 >  char tempBuffer[BUFFERSIZE];  
168    char writeLine[BUFFERSIZE];
169  
170 <  int i;
170 >  int i, k;
171 >
172   #ifdef IS_MPI
173 <  int j, which_node, done, which_atom, local_index;
173 >  
174 >  /*********************************************************************
175 >   * Documentation?  You want DOCUMENTATION?
176 >   *
177 >   * Why all the potatoes below?  
178 >   *
179 >   * To make a long story short, the original version of DumpWriter
180 >   * worked in the most inefficient way possible.  Node 0 would
181 >   * poke each of the node for an individual atom's formatted data
182 >   * as node 0 worked its way down the global index. This was particularly
183 >   * inefficient since the method blocked all processors at every atom
184 >   * (and did it twice!).
185 >   *
186 >   * An intermediate version of DumpWriter could be described from Node
187 >   * zero's perspective as follows:
188 >   *
189 >   *  1) Have 100 of your friends stand in a circle.
190 >   *  2) When you say go, have all of them start tossing potatoes at
191 >   *     you (one at a time).
192 >   *  3) Catch the potatoes.
193 >   *
194 >   * It was an improvement, but MPI has buffers and caches that could
195 >   * best be described in this analogy as "potato nets", so there's no
196 >   * need to block the processors atom-by-atom.
197 >   *
198 >   * This new and improved DumpWriter works in an even more efficient
199 >   * way:
200 >   *
201 >   *  1) Have 100 of your friend stand in a circle.
202 >   *  2) When you say go, have them start tossing 5-pound bags of
203 >   *     potatoes at you.
204 >   *  3) Once you've caught a friend's bag of potatoes,
205 >   *     toss them a spud to let them know they can toss another bag.
206 >   *
207 >   * How's THAT for documentation?
208 >   *
209 >   *********************************************************************/
210 >
211 >  int *potatoes;
212 >  int myPotato;
213 >
214 >  int nProc;
215 >  int j, which_node, done, which_atom, local_index, currentIndex;
216 >  double atomData6[6];
217 >  double atomData13[13];
218 >  int isDirectional;
219 >  char* atomTypeString;
220 >  char MPIatomTypeString[MINIBUFFERSIZE];
221 >
222   #else //is_mpi
223    int nAtoms = entry_plug->n_atoms;
224   #endif //is_mpi
# Line 83 | Line 227 | void DumpWriter::writeDump( double currentTime ){
227    DirectionalAtom* dAtom;
228    Atom** atoms = entry_plug->atoms;
229    double pos[3], vel[3];
86 –    
87 –  
88 –  // write current frame to the eor file
230  
90 –  this->writeFinal( currentTime );
91 –
231   #ifndef IS_MPI
232 <    
233 <  outFile << nAtoms << "\n";
234 <    
96 <  outFile << currentTime << ";\t"
97 <          << entry_plug->Hmat[0][0] << "\t"
98 <          << entry_plug->Hmat[1][0] << "\t"
99 <          << entry_plug->Hmat[2][0] << ";\t"
232 >  
233 >  for(k = 0; k < outFile.size(); k++){
234 >    *outFile[k] << nAtoms << "\n";
235  
236 <          << entry_plug->Hmat[0][1] << "\t"
237 <          << entry_plug->Hmat[1][1] << "\t"
238 <          << entry_plug->Hmat[2][1] << ";\t"
236 >    *outFile[k] << currentTime << ";\t"
237 >               << entry_plug->Hmat[0][0] << "\t"
238 >                     << entry_plug->Hmat[1][0] << "\t"
239 >                     << entry_plug->Hmat[2][0] << ";\t"
240 >              
241 >               << entry_plug->Hmat[0][1] << "\t"
242 >                     << entry_plug->Hmat[1][1] << "\t"
243 >                     << entry_plug->Hmat[2][1] << ";\t"
244  
245 <          << entry_plug->Hmat[0][2] << "\t"
246 <          << entry_plug->Hmat[1][2] << "\t"
247 <          << entry_plug->Hmat[2][2] << ";\n";
248 <    
245 >                     << entry_plug->Hmat[0][2] << "\t"
246 >                     << entry_plug->Hmat[1][2] << "\t"
247 >                     << entry_plug->Hmat[2][2] << ";";
248 >
249 >    //write out additional parameters, such as chi and eta
250 >    *outFile[k] << entry_plug->the_integrator->getAdditionalParameters() << endl;
251 >  }
252 >  
253    for( i=0; i<nAtoms; i++ ){
254 <      
254 >
255      atoms[i]->getPos(pos);
256      atoms[i]->getVel(vel);
257  
# Line 123 | Line 267 | void DumpWriter::writeDump( double currentTime ){
267      strcpy( writeLine, tempBuffer );
268  
269      if( atoms[i]->isDirectional() ){
270 <        
270 >
271        dAtom = (DirectionalAtom *)atoms[i];
272        dAtom->getQ( q );
273 <        
273 >
274        sprintf( tempBuffer,
275                 "%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\n",
276                 q[0],
# Line 140 | Line 284 | void DumpWriter::writeDump( double currentTime ){
284      }
285      else
286        strcat( writeLine, "0.0\t0.0\t0.0\t0.0\t0.0\t0.0\t0.0\n" );
287 <      
288 <    outFile << writeLine;
287 >
288 >    for(k = 0; k < outFile.size(); k++)
289 >      *outFile[k] << writeLine;
290    }
146 –  outFile.flush();
291  
292   #else // is_mpi
293  
294 <  // first thing first, suspend fatalities.
295 <  painCave.isEventLoop = 1;
294 >  /* code to find maximum tag value */
295 >  
296 >  int *tagub, flag, MAXTAG;
297 >  MPI_Attr_get(MPI_COMM_WORLD, MPI_TAG_UB, &tagub, &flag);
298 >  if (flag) {
299 >    MAXTAG = *tagub;
300 >  } else {
301 >    MAXTAG = 32767;
302 >  }  
303  
153 –  int myStatus; // 1 = wakeup & success; 0 = error; -1 = AllDone
304    int haveError;
305  
306    MPI_Status istatus;
307    int *AtomToProcMap = mpiSim->getAtomToProcMap();
308 <  
308 >
309    // write out header and node 0's coordinates
310 <  
310 >
311    if( worldRank == 0 ){
312 <    outFile << mpiSim->getTotAtoms() << "\n";
313 <  
314 <    outFile << currentTime << ";\t"
315 <            << entry_plug->Hmat[0][0] << "\t"
316 <            << entry_plug->Hmat[1][0] << "\t"
317 <            << entry_plug->Hmat[2][0] << ";\t"
318 <      
319 <            << entry_plug->Hmat[0][1] << "\t"
320 <            << entry_plug->Hmat[1][1] << "\t"
171 <            << entry_plug->Hmat[2][1] << ";\t"
172 <      
173 <            << entry_plug->Hmat[0][2] << "\t"
174 <            << entry_plug->Hmat[1][2] << "\t"
175 <            << entry_plug->Hmat[2][2] << ";\n";
312 >
313 >    // Node 0 needs a list of the magic potatoes for each processor;
314 >
315 >    nProc = mpiSim->getNumberProcessors();
316 >    potatoes = new int[nProc];
317 >
318 >    //write out the comment lines
319 >    for (i = 0; i < nProc; i++)
320 >      potatoes[i] = 0;
321      
322 <    outFile.flush();
322 >      for(k = 0; k < outFile.size(); k++){
323 >        *outFile[k] << mpiSim->getTotAtoms() << "\n";
324 >
325 >        *outFile[k] << currentTime << ";\t"
326 >                         << entry_plug->Hmat[0][0] << "\t"
327 >                         << entry_plug->Hmat[1][0] << "\t"
328 >                         << entry_plug->Hmat[2][0] << ";\t"
329 >
330 >                         << entry_plug->Hmat[0][1] << "\t"
331 >                         << entry_plug->Hmat[1][1] << "\t"
332 >                         << entry_plug->Hmat[2][1] << ";\t"
333 >
334 >                         << entry_plug->Hmat[0][2] << "\t"
335 >                         << entry_plug->Hmat[1][2] << "\t"
336 >                         << entry_plug->Hmat[2][2] << ";";
337 >  
338 >        *outFile[k] << entry_plug->the_integrator->getAdditionalParameters() << endl;
339 >    }
340 >
341 >    currentIndex = 0;
342 >
343      for (i = 0 ; i < mpiSim->getTotAtoms(); i++ ) {
344 +      
345        // Get the Node number which has this atom;
346        
347 <      which_node = AtomToProcMap[i];    
347 >      which_node = AtomToProcMap[i];
348        
349 <      if (which_node == 0 ) {
349 >      if (which_node != 0) {
350 >
351 >        if (potatoes[which_node] + 3 >= MAXTAG) {
352 >          // The potato was going to exceed the maximum value,
353 >          // so wrap this processor potato back to 0:        
354 >
355 >          potatoes[which_node] = 0;          
356 >          MPI_Send(0, 1, MPI_INT, which_node, 0, MPI_COMM_WORLD);
357 >          
358 >        }
359 >
360 >        myPotato = potatoes[which_node];        
361 >        
362 >        MPI_Recv(MPIatomTypeString, MINIBUFFERSIZE, MPI_CHAR, which_node,
363 >                 myPotato, MPI_COMM_WORLD, &istatus);
364 >        
365 >        atomTypeString = MPIatomTypeString;
366          
367 <        haveError = 0;
368 <        which_atom = i;
369 <        local_index=-1;        
370 <        for (j=0; (j<mpiSim->getMyNlocal()) && (local_index < 0); j++) {
371 <          if (atoms[j]->getGlobalIndex() == which_atom) local_index = j;
367 >        myPotato++;
368 >
369 >        MPI_Recv(&isDirectional, 1, MPI_INT, which_node,
370 >                 myPotato, MPI_COMM_WORLD, &istatus);
371 >              
372 >        myPotato++;
373 >
374 >        if (isDirectional) {          
375 >          MPI_Recv(atomData13, 13, MPI_DOUBLE, which_node,
376 >                   myPotato, MPI_COMM_WORLD, &istatus);
377 >        } else {
378 >          MPI_Recv(atomData6, 6, MPI_DOUBLE, which_node,
379 >                   myPotato, MPI_COMM_WORLD, &istatus);          
380          }
381 <        if (local_index != -1) {
382 <          //format the line
383 <          
194 <          atoms[local_index]->getPos(pos);
195 <          atoms[local_index]->getVel(vel);
381 >        
382 >        myPotato++;
383 >        potatoes[which_node] = myPotato;
384  
385 <          sprintf( tempBuffer,
386 <                   "%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t",
387 <                   atoms[local_index]->getType(),
388 <                   pos[0],
389 <                   pos[1],
390 <                   pos[2],
391 <                   vel[0],
392 <                   vel[1],
393 <                   vel[2]); // check here.
394 <          strcpy( writeLine, tempBuffer );
395 <          
385 >      } else {
386 >        
387 >        haveError = 0;
388 >              which_atom = i;
389 >        
390 >        local_index = indexArray[currentIndex].first;        
391 >                
392 >        if (which_atom == indexArray[currentIndex].second) {
393 >          
394 >          atomTypeString = atoms[local_index]->getType();
395 >
396 >                atoms[local_index]->getPos(pos);
397 >                atoms[local_index]->getVel(vel);          
398 >
399 >          atomData6[0] = pos[0];
400 >          atomData6[1] = pos[1];
401 >          atomData6[2] = pos[2];
402 >
403 >          atomData6[3] = vel[0];
404 >          atomData6[4] = vel[1];
405 >          atomData6[5] = vel[2];
406 >          
407 >          isDirectional = 0;
408 >
409            if( atoms[local_index]->isDirectional() ){
410 +
411 +            isDirectional = 1;
412              
413              dAtom = (DirectionalAtom *)atoms[local_index];
414              dAtom->getQ( q );
212 –            
213 –            sprintf( tempBuffer,
214 –                     "%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\n",
215 –                     q[0],
216 –                     q[1],
217 –                     q[2],
218 –                     q[3],
219 –                     dAtom->getJx(),
220 –                     dAtom->getJy(),
221 –                     dAtom->getJz());
222 –            strcat( writeLine, tempBuffer );
223 –            
224 –          }
225 –          else
226 –            strcat( writeLine, "0.0\t0.0\t0.0\t0.0\t0.0\t0.0\t0.0\n" );      
227 –        }
228 –        else {
229 –          sprintf(painCave.errMsg,
230 –                  "Atom %d not found on processor %d\n",
231 –                  i, worldRank );
232 –          haveError= 1;
233 –          simError();
234 –        }
235 –        
236 –        if(haveError) nodeZeroError();
415  
416 +            for (int j = 0; j < 6 ; j++)
417 +              atomData13[j] = atomData6[j];            
418 +            
419 +            atomData13[6] = q[0];
420 +            atomData13[7] = q[1];
421 +            atomData13[8] = q[2];
422 +            atomData13[9] = q[3];
423 +            
424 +            atomData13[10] = dAtom->getJx();
425 +            atomData13[11] = dAtom->getJy();
426 +            atomData13[12] = dAtom->getJz();
427 +          }
428 +          
429 +        } else {
430 +          sprintf(painCave.errMsg,
431 +                              "Atom %d not found on processor %d\n",
432 +                              i, worldRank );
433 +                haveError= 1;
434 +                simError();
435 +              }
436 +        
437 +        if(haveError) DieDieDie();
438 +        
439 +        currentIndex ++;
440        }
441 <      else {
442 <        myStatus = 1;
443 <        MPI_Send(&myStatus, 1, MPI_INT, which_node,
242 <                 TAKE_THIS_TAG_INT, MPI_COMM_WORLD);
243 <        MPI_Send(&i, 1, MPI_INT, which_node, TAKE_THIS_TAG_INT,
244 <                 MPI_COMM_WORLD);
245 <        MPI_Recv(writeLine, BUFFERSIZE, MPI_CHAR, which_node,
246 <                 TAKE_THIS_TAG_CHAR, MPI_COMM_WORLD, &istatus);
247 <        MPI_Recv(&myStatus, 1, MPI_INT, which_node,
248 <                 TAKE_THIS_TAG_INT, MPI_COMM_WORLD, &istatus);
441 >      // If we've survived to here, format the line:
442 >      
443 >      if (!isDirectional) {
444          
445 <        if(!myStatus) nodeZeroError();
445 >        sprintf( writeLine,
446 >                             "%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t",
447 >                             atomTypeString,
448 >                             atomData6[0],
449 >                             atomData6[1],
450 >                             atomData6[2],
451 >                             atomData6[3],
452 >                             atomData6[4],
453 >                             atomData6[5]);
454  
455 +              strcat( writeLine, "0.0\t0.0\t0.0\t0.0\t0.0\t0.0\t0.0\n" );
456 +        
457 +      } else {
458 +        
459 +              sprintf( writeLine,
460 +                             "%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",
461 +                             atomTypeString,
462 +                             atomData13[0],
463 +                             atomData13[1],
464 +                             atomData13[2],
465 +                             atomData13[3],
466 +                             atomData13[4],
467 +                             atomData13[5],
468 +                             atomData13[6],
469 +                             atomData13[7],
470 +                             atomData13[8],
471 +                             atomData13[9],
472 +                             atomData13[10],
473 +                             atomData13[11],
474 +                             atomData13[12]);
475 +        
476        }
477        
478 <      outFile << writeLine;
479 <      outFile.flush();
478 >      for(k = 0; k < outFile.size(); k++)
479 >        *outFile[k] << writeLine;
480      }
481      
482 <    // kill everyone off:
483 <    myStatus = -1;
260 <    for (j = 0; j < mpiSim->getNumberProcessors(); j++) {      
261 <      MPI_Send(&myStatus, 1, MPI_INT, j,
262 <               TAKE_THIS_TAG_INT, MPI_COMM_WORLD);
263 <    }
264 <
265 <  } else {
482 >    for(k = 0; k < outFile.size(); k++)
483 >      outFile[k]->flush();
484      
485 <    done = 0;
486 <    while (!done) {
269 <      
270 <      MPI_Recv(&myStatus, 1, MPI_INT, 0,
271 <               TAKE_THIS_TAG_INT, MPI_COMM_WORLD, &istatus);
485 >    sprintf( checkPointMsg,
486 >             "Sucessfully took a dump.\n");
487  
488 <      if(!myStatus) anonymousNodeDie();
274 <      
275 <      if(myStatus < 0) break;
488 >    MPIcheckPoint();        
489  
490 <      MPI_Recv(&which_atom, 1, MPI_INT, 0,
278 <               TAKE_THIS_TAG_INT, MPI_COMM_WORLD, &istatus);
279 <      
280 <      myStatus = 1;
281 <      local_index=-1;        
282 <      for (j=0; (j<mpiSim->getMyNlocal()) && (local_index < 0); j++) {
283 <        if (atoms[j]->getGlobalIndex() == which_atom) local_index = j;
284 <      }
285 <      if (local_index != -1) {
286 <        //format the line
490 >    delete[] potatoes;
491  
492 <        atoms[local_index]->getPos(pos);
289 <        atoms[local_index]->getVel(vel);
492 >  } else {
493  
494 <        sprintf( tempBuffer,
292 <                 "%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t",
293 <                 atoms[local_index]->getType(),
294 <                 pos[0],
295 <                 pos[1],
296 <                 pos[2],
297 <                 vel[0],
298 <                 vel[1],
299 <                 vel[2]); // check here.
300 <        strcpy( writeLine, tempBuffer );
301 <        
302 <        if( atoms[local_index]->isDirectional() ){
303 <          
304 <          dAtom = (DirectionalAtom *)atoms[local_index];
305 <          dAtom->getQ( q );
306 <          
307 <          sprintf( tempBuffer,
308 <                   "%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\n",
309 <                   q[0],
310 <                   q[1],
311 <                   q[2],
312 <                   q[3],
313 <                   dAtom->getJx(),
314 <                   dAtom->getJy(),
315 <                   dAtom->getJz());
316 <          strcat( writeLine, tempBuffer );
317 <        }
318 <        else{
319 <          strcat( writeLine, "0.0\t0.0\t0.0\t0.0\t0.0\t0.0\t0.0\n" );
320 <        }
321 <      }
322 <      else {
323 <        sprintf(painCave.errMsg,
324 <                "Atom %d not found on processor %d\n",
325 <                which_atom, worldRank );
326 <        myStatus = 0;
327 <        simError();
494 >    // worldRank != 0, so I'm a remote node.  
495  
496 <        strcpy( writeLine, "Hello, I'm an error.\n");
330 <      }
496 >    // Set my magic potato to 0:
497  
498 <      MPI_Send(writeLine, BUFFERSIZE, MPI_CHAR, 0,
499 <               TAKE_THIS_TAG_CHAR, MPI_COMM_WORLD);
500 <      MPI_Send( &myStatus, 1, MPI_INT, 0,
501 <                TAKE_THIS_TAG_INT, MPI_COMM_WORLD);
502 <    }
503 <  }  
504 <  outFile.flush();
505 <  sprintf( checkPointMsg,
340 <           "Sucessfully took a dump.\n");
341 <  MPIcheckPoint();
498 >    myPotato = 0;
499 >    currentIndex = 0;
500 >    
501 >    for (i = 0 ; i < mpiSim->getTotAtoms(); i++ ) {
502 >      
503 >      // Am I the node which has this atom?
504 >      
505 >      if (AtomToProcMap[i] == worldRank) {
506  
507 < // last  thing last, enable  fatalities.
344 <  painCave.isEventLoop = 0;
507 >        if (myPotato + 3 >= MAXTAG) {
508  
509 < #endif // is_mpi
510 < }
509 >          // The potato was going to exceed the maximum value,
510 >          // so wrap this processor potato back to 0 (and block until
511 >          // node 0 says we can go:
512  
513 < void DumpWriter::writeFinal(double finalTime){
513 >          MPI_Recv(&myPotato, 1, MPI_INT, 0, 0, MPI_COMM_WORLD, &istatus);
514 >          
515 >        }
516 >        which_atom = i;
517 >        local_index = indexArray[currentIndex].first;        
518 >                
519 >        if (which_atom == indexArray[currentIndex].second) {
520 >        
521 >          atomTypeString = atoms[local_index]->getType();
522  
523 <  char finalName[500];
524 <  ofstream finalOut;
523 >                atoms[local_index]->getPos(pos);
524 >                atoms[local_index]->getVel(vel);
525  
526 <  const int BUFFERSIZE = 2000;
527 <  char tempBuffer[BUFFERSIZE];
528 <  char writeLine[BUFFERSIZE];  
526 >          atomData6[0] = pos[0];
527 >          atomData6[1] = pos[1];
528 >          atomData6[2] = pos[2];
529  
530 <  double q[4];
531 <  DirectionalAtom* dAtom;
532 <  Atom** atoms = entry_plug->atoms;
533 <  int i;
534 < #ifdef IS_MPI
363 <  int j, which_node, done, which_atom, local_index;
364 < #else //is_mpi
365 <  int nAtoms = entry_plug->n_atoms;
366 < #endif //is_mpi
367 <  
368 <  double pos[3], vel[3];
369 <  
370 < #ifdef IS_MPI
371 <  if(worldRank == 0 ){
372 < #endif // is_mpi
373 <    
374 <    strcpy( finalName, entry_plug->finalName );
375 <    
376 <    finalOut.open( finalName, ios::out | ios::trunc );
377 <    if( !finalOut ){
378 <      sprintf( painCave.errMsg,
379 <               "Could not open \"%s\" for final dump output.\n",
380 <               finalName );
381 <      painCave.isFatal = 1;
382 <      simError();
383 <    }
384 <    
385 <    // finalOut.setf( ios::scientific );
386 <    
387 < #ifdef IS_MPI
388 <  }
389 <  
390 <  sprintf(checkPointMsg,"Opened file for final configuration\n");
391 <  MPIcheckPoint();  
392 <  
393 < #endif //is_mpi
530 >          atomData6[3] = vel[0];
531 >          atomData6[4] = vel[1];
532 >          atomData6[5] = vel[2];
533 >          
534 >          isDirectional = 0;
535  
536 <  
396 < #ifndef IS_MPI
397 <    
398 <  finalOut << nAtoms << "\n";
399 <    
400 <  finalOut << finalTime << ";\t"
401 <           << entry_plug->Hmat[0][0] << "\t"
402 <           << entry_plug->Hmat[1][0] << "\t"
403 <           << entry_plug->Hmat[2][0] << ";\t"
404 <    
405 <           << entry_plug->Hmat[0][1] << "\t"
406 <           << entry_plug->Hmat[1][1] << "\t"
407 <           << entry_plug->Hmat[2][1] << ";\t"
408 <    
409 <           << entry_plug->Hmat[0][2] << "\t"
410 <           << entry_plug->Hmat[1][2] << "\t"
411 <           << entry_plug->Hmat[2][2] << ";\n";
412 <  
413 <  for( i=0; i<nAtoms; i++ ){
414 <      
415 <    atoms[i]->getPos(pos);
416 <    atoms[i]->getVel(vel);
417 <    
418 <    sprintf( tempBuffer,
419 <             "%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t",
420 <             atoms[i]->getType(),
421 <             pos[0],
422 <             pos[1],
423 <             pos[2],
424 <             vel[0],
425 <             vel[1],
426 <             vel[2]);
427 <    strcpy( writeLine, tempBuffer );
536 >          if( atoms[local_index]->isDirectional() ){
537  
538 <    if( atoms[i]->isDirectional() ){
539 <        
540 <      dAtom = (DirectionalAtom *)atoms[i];
541 <      dAtom->getQ( q );
542 <        
543 <      sprintf( tempBuffer,
544 <               "%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\n",
545 <               q[0],
546 <               q[1],
547 <               q[2],
548 <               q[3],
549 <               dAtom->getJx(),
441 <               dAtom->getJy(),
442 <               dAtom->getJz());
443 <      strcat( writeLine, tempBuffer );
444 <    }
445 <    else
446 <      strcat( writeLine, "0.0\t0.0\t0.0\t0.0\t0.0\t0.0\t0.0\n" );
447 <      
448 <    finalOut << writeLine;
449 <  }
450 <  finalOut.flush();
451 <  finalOut.close();
452 <
453 < #else // is_mpi
538 >            isDirectional = 1;
539 >            
540 >            dAtom = (DirectionalAtom *)atoms[local_index];
541 >            dAtom->getQ( q );
542 >            
543 >            for (int j = 0; j < 6 ; j++)
544 >              atomData13[j] = atomData6[j];
545 >            
546 >            atomData13[6] = q[0];
547 >            atomData13[7] = q[1];
548 >            atomData13[8] = q[2];
549 >            atomData13[9] = q[3];
550    
551 <  // first thing first, suspend fatalities.
552 <  painCave.isEventLoop = 1;
551 >            atomData13[10] = dAtom->getJx();
552 >            atomData13[11] = dAtom->getJy();
553 >            atomData13[12] = dAtom->getJz();
554 >          }
555  
556 <  int myStatus; // 1 = wakeup & success; 0 = error; -1 = AllDone
557 <  int haveError;
558 <
559 <  MPI_Status istatus;
560 <  int *AtomToProcMap = mpiSim->getAtomToProcMap();
556 >        } else {
557 >                sprintf(painCave.errMsg,
558 >                              "Atom %d not found on processor %d\n",
559 >                              i, worldRank );
560 >                haveError= 1;
561 >                simError();
562 >              }
563  
564 <  // write out header and node 0's coordinates
465 <  
466 <  haveError = 0;
467 <  if( worldRank == 0 ){
468 <    finalOut << mpiSim->getTotAtoms() << "\n";
469 <    
470 <    finalOut << finalTime << ";\t"
471 <             << entry_plug->Hmat[0][0] << "\t"
472 <             << entry_plug->Hmat[1][0] << "\t"
473 <             << entry_plug->Hmat[2][0] << ";\t"
474 <      
475 <             << entry_plug->Hmat[0][1] << "\t"
476 <             << entry_plug->Hmat[1][1] << "\t"
477 <             << entry_plug->Hmat[2][1] << ";\t"
478 <      
479 <             << entry_plug->Hmat[0][2] << "\t"
480 <             << entry_plug->Hmat[1][2] << "\t"
481 <             << entry_plug->Hmat[2][2] << ";\n";
482 <    
483 <    for (i = 0 ; i < mpiSim->getTotAtoms(); i++ ) {
484 <      // Get the Node number which has this molecule:
485 <      
486 <      which_node = AtomToProcMap[i];    
487 <      
488 <      if (which_node == mpiSim->getMyNode()) {
564 >        strncpy(MPIatomTypeString, atomTypeString, MINIBUFFERSIZE);
565  
566 <        which_atom = i;
567 <        local_index=-1;        
492 <        for (j=0; (j<mpiSim->getMyNlocal()) && (local_index < 0); j++) {
493 <          if (atoms[j]->getGlobalIndex() == which_atom) local_index = j;
494 <        }
495 <        if (local_index != -1) {    
566 >        // null terminate the string before sending (just in case):
567 >        MPIatomTypeString[MINIBUFFERSIZE-1] = '\0';
568  
569 <          atoms[local_index]->getPos(pos);
570 <          atoms[local_index]->getVel(vel);
571 <          
572 <          sprintf( tempBuffer,
501 <                   "%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t",
502 <                   atoms[local_index]->getType(),
503 <                   pos[0],
504 <                   pos[1],
505 <                   pos[2],
506 <                   vel[0],
507 <                   vel[1],
508 <                   vel[2]);
509 <          strcpy( writeLine, tempBuffer );
510 <          
511 <          if( atoms[local_index]->isDirectional() ){
512 <            
513 <            dAtom = (DirectionalAtom *)atoms[local_index];
514 <            dAtom->getQ( q );
515 <            
516 <            sprintf( tempBuffer,
517 <                     "%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\n",
518 <                     q[0],
519 <                     q[1],
520 <                     q[2],
521 <                     q[3],
522 <                     dAtom->getJx(),
523 <                     dAtom->getJy(),
524 <                     dAtom->getJz());
525 <            strcat( writeLine, tempBuffer );
526 <          }
527 <          else
528 <            strcat( writeLine, "0.0\t0.0\t0.0\t0.0\t0.0\t0.0\t0.0\n" );      
529 <        }
530 <        else {
531 <          sprintf(painCave.errMsg,
532 <                  "Atom %d not found on processor %d\n",
533 <                  i, worldRank );
534 <          haveError= 1;
535 <          simError();
536 <        }
569 >        MPI_Send(MPIatomTypeString, MINIBUFFERSIZE, MPI_CHAR, 0,
570 >                             myPotato, MPI_COMM_WORLD);
571 >        
572 >        myPotato++;
573  
574 <        if(haveError) nodeZeroError();
575 <    
540 <      }
541 <      else {
574 >        MPI_Send(&isDirectional, 1, MPI_INT, 0,
575 >                             myPotato, MPI_COMM_WORLD);
576          
577 <        myStatus = 1;
578 <        MPI_Send(&myStatus, 1, MPI_INT, which_node,
579 <                 TAKE_THIS_TAG_INT, MPI_COMM_WORLD);
546 <        MPI_Send(&i, 1, MPI_INT, which_node, TAKE_THIS_TAG_INT,
547 <                 MPI_COMM_WORLD);
548 <        MPI_Recv(writeLine, BUFFERSIZE, MPI_CHAR, which_node,
549 <                 TAKE_THIS_TAG_CHAR, MPI_COMM_WORLD, &istatus);
550 <        MPI_Recv(&myStatus, 1, MPI_INT, which_node,
551 <                 TAKE_THIS_TAG_INT, MPI_COMM_WORLD, &istatus);
552 <        
553 <        if(!myStatus) nodeZeroError();
554 <      }
555 <      
556 <      finalOut << writeLine;
557 <    }
558 <    
559 <    // kill everyone off:
560 <    myStatus = -1;
561 <    for (j = 0; j < mpiSim->getNumberProcessors(); j++) {      
562 <      MPI_Send(&myStatus, 1, MPI_INT, j,
563 <               TAKE_THIS_TAG_INT, MPI_COMM_WORLD);
564 <    }
577 >        myPotato++;
578 >        
579 >        if (isDirectional) {
580  
581 <  } else {
582 <    
583 <    done = 0;
584 <    while (!done) {
581 >          MPI_Send(atomData13, 13, MPI_DOUBLE, 0,
582 >                   myPotato, MPI_COMM_WORLD);
583 >          
584 >        } else {
585  
586 <      MPI_Recv(&myStatus, 1, MPI_INT, 0,
587 <               TAKE_THIS_TAG_INT, MPI_COMM_WORLD, &istatus);
588 <      
574 <      if(!myStatus) anonymousNodeDie();
575 <      
576 <      if(myStatus < 0) break;
577 <      
578 <      MPI_Recv(&which_atom, 1, MPI_INT, 0,
579 <               TAKE_THIS_TAG_INT, MPI_COMM_WORLD, &istatus);
580 <      
581 <      myStatus = 1;
582 <      local_index=-1;        
583 <      for (j=0; j < mpiSim->getMyNlocal(); j++) {
584 <        if (atoms[j]->getGlobalIndex() == which_atom) local_index = j;
585 <      }
586 <      if (local_index != -1) {
586 >          MPI_Send(atomData6, 6, MPI_DOUBLE, 0,
587 >                   myPotato, MPI_COMM_WORLD);
588 >        }
589  
590 <        atoms[local_index]->getPos(pos);
591 <        atoms[local_index]->getVel(vel);
590 <
591 <        //format the line
592 <        sprintf( tempBuffer,
593 <                 "%s\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t",
594 <                 atoms[local_index]->getType(),
595 <                 pos[0],
596 <                 pos[1],
597 <                 pos[2],
598 <                 vel[0],
599 <                 vel[1],
600 <                 vel[2]); // check here.
601 <        strcpy( writeLine, tempBuffer );
602 <        
603 <        if( atoms[local_index]->isDirectional() ){
604 <          
605 <          dAtom = (DirectionalAtom *)atoms[local_index];
606 <          dAtom->getQ( q );
607 <          
608 <          sprintf( tempBuffer,
609 <                   "%lf\t%lf\t%lf\t%lf\t%lf\t%lf\t%lf\n",
610 <                   q[0],
611 <                   q[1],
612 <                   q[2],
613 <                   q[3],
614 <                   dAtom->getJx(),
615 <                   dAtom->getJy(),
616 <                   dAtom->getJz());
617 <          strcat( writeLine, tempBuffer );
618 <        }
619 <        else{
620 <          strcat( writeLine, "0.0\t0.0\t0.0\t0.0\t0.0\t0.0\t0.0\n" );
621 <        }
622 <      }
623 <      else {
624 <        sprintf(painCave.errMsg,
625 <                "Atom %d not found on processor %d\n",
626 <                which_atom, worldRank );
627 <        myStatus = 0;
628 <        simError();
629 <        
630 <        strcpy( writeLine, "Hello, I'm an error.\n");
590 >        myPotato++;  
591 >        currentIndex++;    
592        }
632 –
633 –      MPI_Send(writeLine, BUFFERSIZE, MPI_CHAR, 0,
634 –               TAKE_THIS_TAG_CHAR, MPI_COMM_WORLD);
635 –      MPI_Send( &myStatus, 1, MPI_INT, 0,
636 –                TAKE_THIS_TAG_INT, MPI_COMM_WORLD);
593      }
594 <  }
595 <  finalOut.flush();
596 <  sprintf( checkPointMsg,
597 <           "Sucessfully took a dump.\n");
598 <  MPIcheckPoint();
594 >
595 >    sprintf( checkPointMsg,
596 >             "Sucessfully took a dump.\n");
597 >    MPIcheckPoint();        
598 >    
599 >  }
600    
644 –  if( worldRank == 0 ) finalOut.close();    
601   #endif // is_mpi
602   }
603  
648 –
649 –
604   #ifdef IS_MPI
605  
606   // a couple of functions to let us escape the write loop
607  
608 < void dWrite::nodeZeroError( void ){
655 <  int j, myStatus;
656 <  
657 <  myStatus = 0;
658 <  for (j = 0; j < mpiSim->getNumberProcessors(); j++) {      
659 <    MPI_Send( &myStatus, 1, MPI_INT, j,
660 <              TAKE_THIS_TAG_INT, MPI_COMM_WORLD);
661 <  }  
662 <  
608 > void dWrite::DieDieDie( void ){
609  
610    MPI_Finalize();
611    exit (0);
666 –  
612   }
613  
669 – void dWrite::anonymousNodeDie( void ){
670 –
671 –  MPI_Finalize();
672 –  exit (0);
673 – }
674 –
614   #endif //is_mpi

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