cell.c 176 KB
Newer Older
1
/*******************************************************************************
2
 * This file is part of SWIFT.
3
 * Copyright (c) 2012 Pedro Gonnet (pedro.gonnet@durham.ac.uk)
4
5
6
7
 *                    Matthieu Schaller (matthieu.schaller@durham.ac.uk)
 *               2015 Peter W. Draper (p.w.draper@durham.ac.uk)
 *               2016 John A. Regan (john.a.regan@durham.ac.uk)
 *                    Tom Theuns (tom.theuns@durham.ac.uk)
8
 *
9
10
11
12
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
13
 *
14
15
16
17
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
18
 *
19
20
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
21
 *
22
23
24
25
26
27
28
29
30
 ******************************************************************************/

/* Config parameters. */
#include "../config.h"

/* Some standard headers. */
#include <float.h>
#include <limits.h>
#include <math.h>
31
32
33
34
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
35

36
37
/* MPI headers. */
#ifdef WITH_MPI
38
#include <mpi.h>
39
40
#endif

41
42
/* Switch off timers. */
#ifdef TIMER
43
#undef TIMER
44
45
#endif

46
47
48
/* This object's header. */
#include "cell.h"

49
/* Local headers. */
50
#include "active.h"
51
#include "atomic.h"
52
#include "black_holes.h"
53
#include "chemistry.h"
54
#include "drift.h"
55
#include "engine.h"
Matthieu Schaller's avatar
Matthieu Schaller committed
56
#include "entropy_floor.h"
57
#include "error.h"
58
#include "feedback.h"
59
#include "gravity.h"
60
#include "hydro.h"
Matthieu Schaller's avatar
Matthieu Schaller committed
61
#include "hydro_properties.h"
Pedro Gonnet's avatar
Pedro Gonnet committed
62
#include "memswap.h"
63
#include "minmax.h"
64
#include "scheduler.h"
65
#include "space.h"
66
#include "space_getsid.h"
Loic Hausammann's avatar
Loic Hausammann committed
67
#include "star_formation.h"
Loic Hausammann's avatar
Loic Hausammann committed
68
#include "stars.h"
69
#include "timers.h"
70
#include "tools.h"
71
#include "tracers.h"
72

73
74
75
/* Global variables. */
int cell_next_tag = 0;

Pedro Gonnet's avatar
Pedro Gonnet committed
76
/** List of cell pairs for sub-cell recursion. For any sid, the entries in
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
 * this array contain the number of sub-cell pairs and the indices and sid
 * of the sub-cell pairs themselves. */
struct cell_split_pair cell_split_pairs[13] = {
    {1, /* (  1 ,  1 ,  1 ) */
     {{7, 0, 0}}},

    {4, /* (  1 ,  1 ,  0 ) */
     {{6, 0, 1}, {7, 1, 1}, {6, 1, 0}, {7, 0, 2}}},

    {1, /* (  1 ,  1 , -1 ) */
     {{6, 1, 2}}},

    {4, /* (  1 ,  0 ,  1 ) */
     {{5, 0, 3}, {7, 2, 3}, {5, 2, 0}, {7, 0, 6}}},

    {16, /* (  1 ,  0 ,  0 ) */
     {{4, 0, 4},
      {5, 0, 5},
      {6, 0, 7},
      {7, 0, 8},
      {4, 1, 3},
      {5, 1, 4},
      {6, 1, 6},
      {7, 1, 7},
      {4, 2, 1},
      {5, 2, 2},
      {6, 2, 4},
      {7, 2, 5},
      {4, 3, 0},
      {5, 3, 1},
      {6, 3, 3},
      {7, 3, 4}}},

    {4, /* (  1 ,  0 , -1 ) */
     {{4, 1, 5}, {6, 3, 5}, {4, 3, 2}, {6, 1, 8}}},

    {1, /* (  1 , -1 ,  1 ) */
     {{5, 2, 6}}},

    {4, /* (  1 , -1 ,  0 ) */
     {{4, 3, 6}, {5, 2, 8}, {4, 2, 7}, {5, 3, 7}}},

    {1, /* (  1 , -1 , -1 ) */
     {{4, 3, 8}}},

    {4, /* (  0 ,  1 ,  1 ) */
     {{3, 0, 9}, {7, 4, 9}, {3, 4, 0}, {7, 0, 8}}},

    {16, /* (  0 ,  1 ,  0 ) */
     {{2, 0, 10},
      {3, 0, 11},
      {6, 0, 7},
      {7, 0, 6},
      {2, 1, 9},
      {3, 1, 10},
      {6, 1, 8},
      {7, 1, 7},
      {2, 4, 1},
      {3, 4, 2},
      {6, 4, 10},
      {7, 4, 11},
      {2, 5, 0},
      {3, 5, 1},
      {6, 5, 9},
      {7, 5, 10}}},

    {4, /* (  0 ,  1 , -1 ) */
     {{2, 1, 11}, {6, 5, 11}, {2, 5, 2}, {6, 1, 6}}},

    {16, /* (  0 ,  0 ,  1 ) */
     {{1, 0, 12},
      {3, 0, 11},
      {5, 0, 5},
      {7, 0, 2},
      {1, 2, 9},
      {3, 2, 12},
      {5, 2, 8},
      {7, 2, 5},
      {1, 4, 3},
      {3, 4, 6},
      {5, 4, 12},
      {7, 4, 11},
      {1, 6, 0},
      {3, 6, 3},
      {5, 6, 9},
      {7, 6, 12}}}};

164
165
166
167
168
/**
 * @brief Get the size of the cell subtree.
 *
 * @param c The #cell.
 */
169
int cell_getsize(struct cell *c) {
Pedro Gonnet's avatar
Pedro Gonnet committed
170
171
  /* Number of cells in this subtree. */
  int count = 1;
172

173
174
  /* Sum up the progeny if split. */
  if (c->split)
Pedro Gonnet's avatar
Pedro Gonnet committed
175
    for (int k = 0; k < 8; k++)
176
177
178
179
180
181
      if (c->progeny[k] != NULL) count += cell_getsize(c->progeny[k]);

  /* Return the final count. */
  return count;
}

182
/**
183
 * @brief Link the cells recursively to the given #part array.
184
185
186
187
188
189
 *
 * @param c The #cell.
 * @param parts The #part array.
 *
 * @return The number of particles linked.
 */
190
int cell_link_parts(struct cell *c, struct part *parts) {
191
#ifdef SWIFT_DEBUG_CHECKS
192
193
194
  if (c->nodeID == engine_rank)
    error("Linking foreign particles in a local cell!");

195
  if (c->hydro.parts != NULL)
196
197
198
    error("Linking parts into a cell that was already linked");
#endif

199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
  c->hydro.parts = parts;

  /* Fill the progeny recursively, depth-first. */
  if (c->split) {
    int offset = 0;
    for (int k = 0; k < 8; k++) {
      if (c->progeny[k] != NULL)
        offset += cell_link_parts(c->progeny[k], &parts[offset]);
    }
  }

  /* Return the total number of linked particles. */
  return c->hydro.count;
}

/**
215
 * @brief Link the cells recursively to the given #gpart array.
216
217
 *
 * @param c The #cell.
218
 * @param gparts The #gpart array.
219
220
221
 *
 * @return The number of particles linked.
 */
222
int cell_link_gparts(struct cell *c, struct gpart *gparts) {
223
224
225
226
#ifdef SWIFT_DEBUG_CHECKS
  if (c->nodeID == engine_rank)
    error("Linking foreign particles in a local cell!");

227
  if (c->grav.parts != NULL)
228
    error("Linking gparts into a cell that was already linked");
229
#endif
230

231
  c->grav.parts = gparts;
232
233
234
235
236
237
238
239
240
241
242

  /* Fill the progeny recursively, depth-first. */
  if (c->split) {
    int offset = 0;
    for (int k = 0; k < 8; k++) {
      if (c->progeny[k] != NULL)
        offset += cell_link_gparts(c->progeny[k], &gparts[offset]);
    }
  }

  /* Return the total number of linked particles. */
243
  return c->grav.count;
244
245
}

246
247
248
249
250
251
252
253
254
/**
 * @brief Link the cells recursively to the given #spart array.
 *
 * @param c The #cell.
 * @param sparts The #spart array.
 *
 * @return The number of particles linked.
 */
int cell_link_sparts(struct cell *c, struct spart *sparts) {
255
256
257
258
#ifdef SWIFT_DEBUG_CHECKS
  if (c->nodeID == engine_rank)
    error("Linking foreign particles in a local cell!");

259
  if (c->stars.parts != NULL)
260
261
262
    error("Linking sparts into a cell that was already linked");
#endif

263
  c->stars.parts = sparts;
264
  c->stars.parts_rebuild = sparts;
265
266
267
268
269
270
271
272
273
274
275

  /* Fill the progeny recursively, depth-first. */
  if (c->split) {
    int offset = 0;
    for (int k = 0; k < 8; k++) {
      if (c->progeny[k] != NULL)
        offset += cell_link_sparts(c->progeny[k], &sparts[offset]);
    }
  }

  /* Return the total number of linked particles. */
276
  return c->stars.count;
277
278
}

279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
/**
 * @brief Link the cells recursively to the given #bpart array.
 *
 * @param c The #cell.
 * @param bparts The #bpart array.
 *
 * @return The number of particles linked.
 */
int cell_link_bparts(struct cell *c, struct bpart *bparts) {

#ifdef SWIFT_DEBUG_CHECKS
  if (c->nodeID == engine_rank)
    error("Linking foreign particles in a local cell!");

  if (c->black_holes.parts != NULL)
    error("Linking bparts into a cell that was already linked");
#endif

  c->black_holes.parts = bparts;

  /* Fill the progeny recursively, depth-first. */
  if (c->split) {
    int offset = 0;
    for (int k = 0; k < 8; k++) {
      if (c->progeny[k] != NULL)
        offset += cell_link_bparts(c->progeny[k], &bparts[offset]);
    }
  }

  /* Return the total number of linked particles. */
  return c->black_holes.count;
}

312
313
314
315
316
317
318
319
320
321
/**
 * @brief Recurse down foreign cells until reaching one with hydro
 * tasks; then trigger the linking of the #part array from that
 * level.
 *
 * @param c The #cell.
 * @param parts The #part array.
 *
 * @return The number of particles linked.
 */
322
int cell_link_foreign_parts(struct cell *c, struct part *parts) {
323
324
#ifdef WITH_MPI

325
326
327
328
329
330
#ifdef SWIFT_DEBUG_CHECKS
  if (c->nodeID == engine_rank)
    error("Linking foreign particles in a local cell!");
#endif

  /* Do we have a hydro task at this level? */
331
  if (cell_get_recv(c, task_subtype_xv) != NULL) {
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349

    /* Recursively attach the parts */
    const int counts = cell_link_parts(c, parts);
#ifdef SWIFT_DEBUG_CHECKS
    if (counts != c->hydro.count)
      error("Something is wrong with the foreign counts");
#endif
    return counts;
  }

  /* Go deeper to find the level where the tasks are */
  if (c->split) {
    int count = 0;
    for (int k = 0; k < 8; k++) {
      if (c->progeny[k] != NULL) {
        count += cell_link_foreign_parts(c->progeny[k], &parts[count]);
      }
    }
350
351
352
    return count;
  } else {
    return 0;
353
  }
354
355
356
357

#else
  error("Calling linking of foregin particles in non-MPI mode.");
#endif
358
359
}

360
361
362
363
364
365
366
367
368
369
/**
 * @brief Recurse down foreign cells until reaching one with gravity
 * tasks; then trigger the linking of the #gpart array from that
 * level.
 *
 * @param c The #cell.
 * @param gparts The #gpart array.
 *
 * @return The number of particles linked.
 */
370
int cell_link_foreign_gparts(struct cell *c, struct gpart *gparts) {
371
372
#ifdef WITH_MPI

373
374
375
376
377
#ifdef SWIFT_DEBUG_CHECKS
  if (c->nodeID == engine_rank)
    error("Linking foreign particles in a local cell!");
#endif

378
379
  /* Do we have a gravity task at this level? */
  if (cell_get_recv(c, task_subtype_gpart) != NULL) {
380

381
    /* Recursively attach the gparts */
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
    const int counts = cell_link_gparts(c, gparts);
#ifdef SWIFT_DEBUG_CHECKS
    if (counts != c->grav.count)
      error("Something is wrong with the foreign counts");
#endif
    return counts;
  }

  /* Go deeper to find the level where the tasks are */
  if (c->split) {
    int count = 0;
    for (int k = 0; k < 8; k++) {
      if (c->progeny[k] != NULL) {
        count += cell_link_foreign_gparts(c->progeny[k], &gparts[count]);
      }
    }
398
399
400
    return count;
  } else {
    return 0;
401
  }
402
403
404
405

#else
  error("Calling linking of foregin particles in non-MPI mode.");
#endif
406
407
}

408
409
410
411
412
413
414
415
/**
 * @brief Recursively count the number of #part in foreign cells that
 * are in cells with hydro-related tasks.
 *
 * @param c The #cell.
 *
 * @return The number of particles linked.
 */
416
int cell_count_parts_for_tasks(const struct cell *c) {
417
418
#ifdef WITH_MPI

419
420
421
422
423
424
#ifdef SWIFT_DEBUG_CHECKS
  if (c->nodeID == engine_rank)
    error("Counting foreign particles in a local cell!");
#endif

  /* Do we have a hydro task at this level? */
425
  if (cell_get_recv(c, task_subtype_xv) != NULL) {
426
427
428
429
430
431
432
433
434
435
    return c->hydro.count;
  }

  if (c->split) {
    int count = 0;
    for (int k = 0; k < 8; ++k) {
      if (c->progeny[k] != NULL) {
        count += cell_count_parts_for_tasks(c->progeny[k]);
      }
    }
436
437
438
    return count;
  } else {
    return 0;
439
  }
440
441
442
443

#else
  error("Calling linking of foregin particles in non-MPI mode.");
#endif
444
445
}

446
447
448
449
450
451
452
453
/**
 * @brief Recursively count the number of #gpart in foreign cells that
 * are in cells with gravity-related tasks.
 *
 * @param c The #cell.
 *
 * @return The number of particles linked.
 */
454
int cell_count_gparts_for_tasks(const struct cell *c) {
455
456
#ifdef WITH_MPI

457
458
459
460
461
#ifdef SWIFT_DEBUG_CHECKS
  if (c->nodeID == engine_rank)
    error("Counting foreign particles in a local cell!");
#endif

462
463
  /* Do we have a gravity task at this level? */
  if (cell_get_recv(c, task_subtype_gpart) != NULL) {
464
465
466
467
468
469
470
471
472
473
    return c->grav.count;
  }

  if (c->split) {
    int count = 0;
    for (int k = 0; k < 8; ++k) {
      if (c->progeny[k] != NULL) {
        count += cell_count_gparts_for_tasks(c->progeny[k]);
      }
    }
474
475
476
    return count;
  } else {
    return 0;
477
  }
478
479
480
481

#else
  error("Calling linking of foregin particles in non-MPI mode.");
#endif
482
483
}

484
485
486
487
488
489
/**
 * @brief Pack the data of the given cell and all it's sub-cells.
 *
 * @param c The #cell.
 * @param pc Pointer to an array of packed cells in which the
 *      cells will be packed.
490
491
 * @param with_gravity Are we running with gravity and hence need
 *      to exchange multipoles?
492
493
494
 *
 * @return The number of packed cells.
 */
495
int cell_pack(struct cell *restrict c, struct pcell *restrict pc,
Matthieu Schaller's avatar
Matthieu Schaller committed
496
              const int with_gravity) {
497
498
#ifdef WITH_MPI

499
  /* Start by packing the data of the current cell. */
500
  pc->hydro.h_max = c->hydro.h_max;
501
  pc->stars.h_max = c->stars.h_max;
502
  pc->black_holes.h_max = c->black_holes.h_max;
503
504
505
506
  pc->hydro.ti_end_min = c->hydro.ti_end_min;
  pc->hydro.ti_end_max = c->hydro.ti_end_max;
  pc->grav.ti_end_min = c->grav.ti_end_min;
  pc->grav.ti_end_max = c->grav.ti_end_max;
507
  pc->stars.ti_end_min = c->stars.ti_end_min;
508
  pc->stars.ti_end_max = c->stars.ti_end_max;
509
510
  pc->black_holes.ti_end_min = c->black_holes.ti_end_min;
  pc->black_holes.ti_end_max = c->black_holes.ti_end_max;
511
512
  pc->hydro.ti_old_part = c->hydro.ti_old_part;
  pc->grav.ti_old_part = c->grav.ti_old_part;
513
  pc->grav.ti_old_multipole = c->grav.ti_old_multipole;
514
  pc->stars.ti_old_part = c->stars.ti_old_part;
515
  pc->hydro.count = c->hydro.count;
516
517
  pc->grav.count = c->grav.count;
  pc->stars.count = c->stars.count;
518
  pc->black_holes.count = c->black_holes.count;
519
  pc->maxdepth = c->maxdepth;
520

521
  /* Copy the Multipole related information */
Matthieu Schaller's avatar
Matthieu Schaller committed
522
  if (with_gravity) {
523
    const struct gravity_tensors *mp = c->grav.multipole;
524

525
526
527
528
529
530
531
532
533
    pc->grav.m_pole = mp->m_pole;
    pc->grav.CoM[0] = mp->CoM[0];
    pc->grav.CoM[1] = mp->CoM[1];
    pc->grav.CoM[2] = mp->CoM[2];
    pc->grav.CoM_rebuild[0] = mp->CoM_rebuild[0];
    pc->grav.CoM_rebuild[1] = mp->CoM_rebuild[1];
    pc->grav.CoM_rebuild[2] = mp->CoM_rebuild[2];
    pc->grav.r_max = mp->r_max;
    pc->grav.r_max_rebuild = mp->r_max_rebuild;
534
535
  }

536
537
538
#ifdef SWIFT_DEBUG_CHECKS
  pc->cellID = c->cellID;
#endif
539
540

  /* Fill in the progeny, depth-first recursion. */
Pedro Gonnet's avatar
Pedro Gonnet committed
541
542
  int count = 1;
  for (int k = 0; k < 8; k++)
543
544
    if (c->progeny[k] != NULL) {
      pc->progeny[k] = count;
545
      count += cell_pack(c->progeny[k], &pc[count], with_gravity);
546
    } else {
547
      pc->progeny[k] = -1;
548
    }
549
550

  /* Return the number of packed cells used. */
551
  c->mpi.pcell_size = count;
552
  return count;
553
554
555
556
557

#else
  error("SWIFT was not compiled with MPI support.");
  return 0;
#endif
558
559
}

560
561
562
563
564
565
566
567
568
569
570
571
/**
 * @brief Pack the tag of the given cell and all it's sub-cells.
 *
 * @param c The #cell.
 * @param tags Pointer to an array of packed tags.
 *
 * @return The number of packed tags.
 */
int cell_pack_tags(const struct cell *c, int *tags) {
#ifdef WITH_MPI

  /* Start by packing the data of the current cell. */
572
  tags[0] = c->mpi.tag;
573
574
575
576
577
578
579
580

  /* Fill in the progeny, depth-first recursion. */
  int count = 1;
  for (int k = 0; k < 8; k++)
    if (c->progeny[k] != NULL)
      count += cell_pack_tags(c->progeny[k], &tags[count]);

#ifdef SWIFT_DEBUG_CHECKS
581
  if (c->mpi.pcell_size != count) error("Inconsistent tag and pcell count!");
582
583
584
585
586
587
588
589
590
591
592
#endif  // SWIFT_DEBUG_CHECKS

  /* Return the number of packed tags used. */
  return count;

#else
  error("SWIFT was not compiled with MPI support.");
  return 0;
#endif
}

593
594
595
596
597
598
/**
 * @brief Unpack the data of a given cell and its sub-cells.
 *
 * @param pc An array of packed #pcell.
 * @param c The #cell in which to unpack the #pcell.
 * @param s The #space in which the cells are created.
599
600
 * @param with_gravity Are we running with gravity and hence need
 *      to exchange multipoles?
601
602
603
 *
 * @return The number of cells created.
 */
Matthieu Schaller's avatar
Matthieu Schaller committed
604
int cell_unpack(struct pcell *restrict pc, struct cell *restrict c,
605
                struct space *restrict s, const int with_gravity) {
606
607
608
#ifdef WITH_MPI

  /* Unpack the current pcell. */
609
  c->hydro.h_max = pc->hydro.h_max;
610
  c->stars.h_max = pc->stars.h_max;
611
  c->black_holes.h_max = pc->black_holes.h_max;
612
613
614
615
  c->hydro.ti_end_min = pc->hydro.ti_end_min;
  c->hydro.ti_end_max = pc->hydro.ti_end_max;
  c->grav.ti_end_min = pc->grav.ti_end_min;
  c->grav.ti_end_max = pc->grav.ti_end_max;
616
  c->stars.ti_end_min = pc->stars.ti_end_min;
617
  c->stars.ti_end_max = pc->stars.ti_end_max;
618
619
  c->black_holes.ti_end_min = pc->black_holes.ti_end_min;
  c->black_holes.ti_end_max = pc->black_holes.ti_end_max;
620
621
  c->hydro.ti_old_part = pc->hydro.ti_old_part;
  c->grav.ti_old_part = pc->grav.ti_old_part;
622
  c->grav.ti_old_multipole = pc->grav.ti_old_multipole;
623
  c->stars.ti_old_part = pc->stars.ti_old_part;
624
  c->black_holes.ti_old_part = pc->black_holes.ti_old_part;
625
  c->hydro.count = pc->hydro.count;
626
627
  c->grav.count = pc->grav.count;
  c->stars.count = pc->stars.count;
628
  c->black_holes.count = pc->black_holes.count;
629
630
  c->maxdepth = pc->maxdepth;

631
632
633
#ifdef SWIFT_DEBUG_CHECKS
  c->cellID = pc->cellID;
#endif
634

635
  /* Copy the Multipole related information */
Matthieu Schaller's avatar
Matthieu Schaller committed
636
  if (with_gravity) {
637
    struct gravity_tensors *mp = c->grav.multipole;
638

639
640
641
642
643
644
645
646
647
    mp->m_pole = pc->grav.m_pole;
    mp->CoM[0] = pc->grav.CoM[0];
    mp->CoM[1] = pc->grav.CoM[1];
    mp->CoM[2] = pc->grav.CoM[2];
    mp->CoM_rebuild[0] = pc->grav.CoM_rebuild[0];
    mp->CoM_rebuild[1] = pc->grav.CoM_rebuild[1];
    mp->CoM_rebuild[2] = pc->grav.CoM_rebuild[2];
    mp->r_max = pc->grav.r_max;
    mp->r_max_rebuild = pc->grav.r_max_rebuild;
648
  }
Matthieu Schaller's avatar
Matthieu Schaller committed
649

650
651
652
653
  /* Number of new cells created. */
  int count = 1;

  /* Fill the progeny recursively, depth-first. */
654
  c->split = 0;
655
656
657
658
  for (int k = 0; k < 8; k++)
    if (pc->progeny[k] >= 0) {
      struct cell *temp;
      space_getcells(s, 1, &temp);
659
      temp->hydro.count = 0;
660
661
      temp->grav.count = 0;
      temp->stars.count = 0;
662
663
664
665
666
667
668
669
670
671
672
673
      temp->loc[0] = c->loc[0];
      temp->loc[1] = c->loc[1];
      temp->loc[2] = c->loc[2];
      temp->width[0] = c->width[0] / 2;
      temp->width[1] = c->width[1] / 2;
      temp->width[2] = c->width[2] / 2;
      temp->dmin = c->dmin / 2;
      if (k & 4) temp->loc[0] += temp->width[0];
      if (k & 2) temp->loc[1] += temp->width[1];
      if (k & 1) temp->loc[2] += temp->width[2];
      temp->depth = c->depth + 1;
      temp->split = 0;
674
      temp->hydro.dx_max_part = 0.f;
675
      temp->hydro.dx_max_sort = 0.f;
Loic Hausammann's avatar
Loic Hausammann committed
676
      temp->stars.dx_max_part = 0.f;
Loic Hausammann's avatar
Loic Hausammann committed
677
      temp->stars.dx_max_sort = 0.f;
678
      temp->black_holes.dx_max_part = 0.f;
679
680
681
682
      temp->nodeID = c->nodeID;
      temp->parent = c;
      c->progeny[k] = temp;
      c->split = 1;
683
      count += cell_unpack(&pc[pc->progeny[k]], temp, s, with_gravity);
684
685
686
    }

  /* Return the total number of unpacked cells. */
687
  c->mpi.pcell_size = count;
688
689
690
691
692
693
694
695
  return count;

#else
  error("SWIFT was not compiled with MPI support.");
  return 0;
#endif
}

696
697
698
699
700
701
702
703
704
705
706
707
/**
 * @brief Unpack the tags of a given cell and its sub-cells.
 *
 * @param tags An array of tags.
 * @param c The #cell in which to unpack the tags.
 *
 * @return The number of tags created.
 */
int cell_unpack_tags(const int *tags, struct cell *restrict c) {
#ifdef WITH_MPI

  /* Unpack the current pcell. */
708
  c->mpi.tag = tags[0];
709
710
711
712
713
714
715
716
717
718
719

  /* Number of new cells created. */
  int count = 1;

  /* Fill the progeny recursively, depth-first. */
  for (int k = 0; k < 8; k++)
    if (c->progeny[k] != NULL) {
      count += cell_unpack_tags(&tags[count], c->progeny[k]);
    }

#ifdef SWIFT_DEBUG_CHECKS
720
  if (c->mpi.pcell_size != count) error("Inconsistent tag and pcell count!");
721
722
723
724
725
726
727
728
729
730
731
#endif  // SWIFT_DEBUG_CHECKS

  /* Return the total number of unpacked tags. */
  return count;

#else
  error("SWIFT was not compiled with MPI support.");
  return 0;
#endif
}

732
733
734
735
/**
 * @brief Pack the time information of the given cell and all it's sub-cells.
 *
 * @param c The #cell.
736
 * @param pcells (output) The end-of-timestep information we pack into
737
738
739
 *
 * @return The number of packed cells.
 */
740
741
int cell_pack_end_step_hydro(struct cell *restrict c,
                             struct pcell_step_hydro *restrict pcells) {
742
743
#ifdef WITH_MPI

744
  /* Pack this cell's data. */
745
746
747
  pcells[0].ti_end_min = c->hydro.ti_end_min;
  pcells[0].ti_end_max = c->hydro.ti_end_max;
  pcells[0].dx_max_part = c->hydro.dx_max_part;
748

749
750
751
752
  /* Fill in the progeny, depth-first recursion. */
  int count = 1;
  for (int k = 0; k < 8; k++)
    if (c->progeny[k] != NULL) {
753
      count += cell_pack_end_step_hydro(c->progeny[k], &pcells[count]);
754
755
756
757
    }

  /* Return the number of packed values. */
  return count;
758
759
760
761
762

#else
  error("SWIFT was not compiled with MPI support.");
  return 0;
#endif
763
764
}

765
766
767
768
/**
 * @brief Unpack the time information of a given cell and its sub-cells.
 *
 * @param c The #cell
769
 * @param pcells The end-of-timestep information to unpack
770
771
772
 *
 * @return The number of cells created.
 */
773
774
int cell_unpack_end_step_hydro(struct cell *restrict c,
                               struct pcell_step_hydro *restrict pcells) {
775
776
#ifdef WITH_MPI

777
  /* Unpack this cell's data. */
778
779
780
  c->hydro.ti_end_min = pcells[0].ti_end_min;
  c->hydro.ti_end_max = pcells[0].ti_end_max;
  c->hydro.dx_max_part = pcells[0].dx_max_part;
781

782
783
784
785
  /* Fill in the progeny, depth-first recursion. */
  int count = 1;
  for (int k = 0; k < 8; k++)
    if (c->progeny[k] != NULL) {
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
      count += cell_unpack_end_step_hydro(c->progeny[k], &pcells[count]);
    }

  /* Return the number of packed values. */
  return count;

#else
  error("SWIFT was not compiled with MPI support.");
  return 0;
#endif
}

/**
 * @brief Pack the time information of the given cell and all it's sub-cells.
 *
 * @param c The #cell.
 * @param pcells (output) The end-of-timestep information we pack into
 *
 * @return The number of packed cells.
 */
int cell_pack_end_step_grav(struct cell *restrict c,
                            struct pcell_step_grav *restrict pcells) {
#ifdef WITH_MPI

  /* Pack this cell's data. */
  pcells[0].ti_end_min = c->grav.ti_end_min;
  pcells[0].ti_end_max = c->grav.ti_end_max;

  /* Fill in the progeny, depth-first recursion. */
  int count = 1;
  for (int k = 0; k < 8; k++)
    if (c->progeny[k] != NULL) {
      count += cell_pack_end_step_grav(c->progeny[k], &pcells[count]);
    }

  /* Return the number of packed values. */
  return count;

#else
  error("SWIFT was not compiled with MPI support.");
  return 0;
#endif
}

/**
 * @brief Unpack the time information of a given cell and its sub-cells.
 *
 * @param c The #cell
 * @param pcells The end-of-timestep information to unpack
 *
 * @return The number of cells created.
 */
int cell_unpack_end_step_grav(struct cell *restrict c,
                              struct pcell_step_grav *restrict pcells) {
#ifdef WITH_MPI

  /* Unpack this cell's data. */
  c->grav.ti_end_min = pcells[0].ti_end_min;
  c->grav.ti_end_max = pcells[0].ti_end_max;

  /* Fill in the progeny, depth-first recursion. */
  int count = 1;
  for (int k = 0; k < 8; k++)
    if (c->progeny[k] != NULL) {
      count += cell_unpack_end_step_grav(c->progeny[k], &pcells[count]);
    }

  /* Return the number of packed values. */
  return count;

#else
  error("SWIFT was not compiled with MPI support.");
  return 0;
#endif
}

/**
 * @brief Pack the time information of the given cell and all it's sub-cells.
 *
 * @param c The #cell.
 * @param pcells (output) The end-of-timestep information we pack into
 *
 * @return The number of packed cells.
 */
int cell_pack_end_step_stars(struct cell *restrict c,
                             struct pcell_step_stars *restrict pcells) {
#ifdef WITH_MPI

  /* Pack this cell's data. */
  pcells[0].ti_end_min = c->stars.ti_end_min;
  pcells[0].ti_end_max = c->stars.ti_end_max;
  pcells[0].dx_max_part = c->stars.dx_max_part;

  /* Fill in the progeny, depth-first recursion. */
  int count = 1;
  for (int k = 0; k < 8; k++)
    if (c->progeny[k] != NULL) {
      count += cell_pack_end_step_stars(c->progeny[k], &pcells[count]);
    }

  /* Return the number of packed values. */
  return count;

#else
  error("SWIFT was not compiled with MPI support.");
  return 0;
#endif
}

/**
 * @brief Unpack the time information of a given cell and its sub-cells.
 *
 * @param c The #cell
 * @param pcells The end-of-timestep information to unpack
 *
 * @return The number of cells created.
 */
int cell_unpack_end_step_stars(struct cell *restrict c,
                               struct pcell_step_stars *restrict pcells) {
#ifdef WITH_MPI

  /* Unpack this cell's data. */
  c->stars.ti_end_min = pcells[0].ti_end_min;
  c->stars.ti_end_max = pcells[0].ti_end_max;
  c->stars.dx_max_part = pcells[0].dx_max_part;

  /* Fill in the progeny, depth-first recursion. */
  int count = 1;
  for (int k = 0; k < 8; k++)
    if (c->progeny[k] != NULL) {
      count += cell_unpack_end_step_stars(c->progeny[k], &pcells[count]);
917
918
919
    }

  /* Return the number of packed values. */
920
  return count;
921
922
923
924
925

#else
  error("SWIFT was not compiled with MPI support.");
  return 0;
#endif
926
}
927

928
929
930
931
932
933
934
935
/**
 * @brief Pack the time information of the given cell and all it's sub-cells.
 *
 * @param c The #cell.
 * @param pcells (output) The end-of-timestep information we pack into
 *
 * @return The number of packed cells.
 */
936
937
int cell_pack_end_step_black_holes(
    struct cell *restrict c, struct pcell_step_black_holes *restrict pcells) {
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969

#ifdef WITH_MPI

  /* Pack this cell's data. */
  pcells[0].ti_end_min = c->black_holes.ti_end_min;
  pcells[0].ti_end_max = c->black_holes.ti_end_max;
  pcells[0].dx_max_part = c->black_holes.dx_max_part;

  /* Fill in the progeny, depth-first recursion. */
  int count = 1;
  for (int k = 0; k < 8; k++)
    if (c->progeny[k] != NULL) {
      count += cell_pack_end_step_black_holes(c->progeny[k], &pcells[count]);
    }

  /* Return the number of packed values. */
  return count;

#else
  error("SWIFT was not compiled with MPI support.");
  return 0;
#endif
}

/**
 * @brief Unpack the time information of a given cell and its sub-cells.
 *
 * @param c The #cell
 * @param pcells The end-of-timestep information to unpack
 *
 * @return The number of cells created.
 */
970
971
int cell_unpack_end_step_black_holes(
    struct cell *restrict c, struct pcell_step_black_holes *restrict pcells) {
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995

#ifdef WITH_MPI

  /* Unpack this cell's data. */
  c->black_holes.ti_end_min = pcells[0].ti_end_min;
  c->black_holes.ti_end_max = pcells[0].ti_end_max;
  c->black_holes.dx_max_part = pcells[0].dx_max_part;

  /* Fill in the progeny, depth-first recursion. */
  int count = 1;
  for (int k = 0; k < 8; k++)
    if (c->progeny[k] != NULL) {
      count += cell_unpack_end_step_black_holes(c->progeny[k], &pcells[count]);
    }

  /* Return the number of packed values. */
  return count;

#else
  error("SWIFT was not compiled with MPI support.");
  return 0;
#endif
}

996
/**
Matthieu Schaller's avatar
Matthieu Schaller committed
997
998
 * @brief Pack the multipole information of the given cell and all it's
 * sub-cells.
999
1000
 *
 * @param c The #cell.
For faster browsing, not all history is shown. View entire blame