engine_maketasks.c 98.5 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
/*******************************************************************************
 * This file is part of SWIFT.
 * Copyright (c) 2012 Pedro Gonnet (pedro.gonnet@durham.ac.uk)
 *                    Matthieu Schaller (matthieu.schaller@durham.ac.uk)
 *               2015 Peter W. Draper (p.w.draper@durham.ac.uk)
 *                    Angus Lepper (angus.lepper@ed.ac.uk)
 *               2016 John A. Regan (john.a.regan@durham.ac.uk)
 *                    Tom Theuns (tom.theuns@durham.ac.uk)
 *
 * 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.
 *
 * 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.
 *
 * 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/>.
 *
 ******************************************************************************/

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

/* Some standard headers. */
#include <stdlib.h>
#include <unistd.h>

/* MPI headers. */
#ifdef WITH_MPI
#include <mpi.h>
#endif

/* Load the profiler header, if needed. */
#ifdef WITH_PROFILER
#include <gperftools/profiler.h>
#endif

/* This object's header. */
#include "engine.h"

/* Local headers. */
#include "atomic.h"
#include "cell.h"
#include "clocks.h"
#include "cycle.h"
#include "debug.h"
#include "error.h"
#include "proxy.h"
#include "timers.h"

/**
 * @brief Add send tasks for the gravity pairs to a hierarchy of cells.
 *
 * @param e The #engine.
 * @param ci The sending #cell.
 * @param cj Dummy cell containing the nodeID of the receiving node.
 * @param t_grav The send_grav #task, if it has already been created.
 */
void engine_addtasks_send_gravity(struct engine *e, struct cell *ci,
                                  struct cell *cj, struct task *t_grav) {

#ifdef WITH_MPI
  struct link *l = NULL;
  struct scheduler *s = &e->sched;
  const int nodeID = cj->nodeID;

  /* Check if any of the gravity tasks are for the target node. */
  for (l = ci->grav.grav; l != NULL; l = l->next)
    if (l->t->ci->nodeID == nodeID ||
        (l->t->cj != NULL && l->t->cj->nodeID == nodeID))
      break;

  /* If so, attach send tasks. */
  if (l != NULL) {

    /* Create the tasks and their dependencies? */
    if (t_grav == NULL) {

Matthieu Schaller's avatar
Matthieu Schaller committed
83
84
      /* Make sure this cell is tagged. */
      cell_ensure_tagged(ci);
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

      t_grav = scheduler_addtask(s, task_type_send, task_subtype_gpart,
                                 ci->mpi.tag, 0, ci, cj);

      /* The sends should unlock the down pass. */
      scheduler_addunlock(s, t_grav, ci->grav.super->grav.down);

      /* Drift before you send */
      scheduler_addunlock(s, ci->grav.super->grav.drift, t_grav);
    }

    /* Add them to the local cell. */
    engine_addlink(e, &ci->mpi.grav.send, t_grav);
  }

  /* Recurse? */
  if (ci->split)
    for (int k = 0; k < 8; k++)
      if (ci->progeny[k] != NULL)
        engine_addtasks_send_gravity(e, ci->progeny[k], cj, t_grav);

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

/**
 * @brief Add send tasks for the hydro pairs to a hierarchy of cells.
 *
 * @param e The #engine.
 * @param ci The sending #cell.
 * @param cj Dummy cell containing the nodeID of the receiving node.
 * @param t_xv The send_xv #task, if it has already been created.
 * @param t_rho The send_rho #task, if it has already been created.
 * @param t_gradient The send_gradient #task, if already created.
 */
void engine_addtasks_send_hydro(struct engine *e, struct cell *ci,
                                struct cell *cj, struct task *t_xv,
                                struct task *t_rho, struct task *t_gradient) {

#ifdef WITH_MPI
  struct link *l = NULL;
  struct scheduler *s = &e->sched;
  const int nodeID = cj->nodeID;

  /* Check if any of the density tasks are for the target node. */
  for (l = ci->hydro.density; l != NULL; l = l->next)
    if (l->t->ci->nodeID == nodeID ||
        (l->t->cj != NULL && l->t->cj->nodeID == nodeID))
      break;

  /* If so, attach send tasks. */
  if (l != NULL) {

    /* Create the tasks and their dependencies? */
    if (t_xv == NULL) {

Matthieu Schaller's avatar
Matthieu Schaller committed
142
143
      /* Make sure this cell is tagged. */
      cell_ensure_tagged(ci);
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171

      t_xv = scheduler_addtask(s, task_type_send, task_subtype_xv, ci->mpi.tag,
                               0, ci, cj);
      t_rho = scheduler_addtask(s, task_type_send, task_subtype_rho,
                                ci->mpi.tag, 0, ci, cj);
#ifdef EXTRA_HYDRO_LOOP
      t_gradient = scheduler_addtask(s, task_type_send, task_subtype_gradient,
                                     ci->mpi.tag, 0, ci, cj);
#endif

#ifdef EXTRA_HYDRO_LOOP

      scheduler_addunlock(s, t_gradient, ci->super->kick2);

      scheduler_addunlock(s, ci->hydro.super->hydro.extra_ghost, t_gradient);

      /* The send_rho task should unlock the super_hydro-cell's extra_ghost
       * task. */
      scheduler_addunlock(s, t_rho, ci->hydro.super->hydro.extra_ghost);

      /* The send_rho task depends on the cell's ghost task. */
      scheduler_addunlock(s, ci->hydro.super->hydro.ghost_out, t_rho);

      /* The send_xv task should unlock the super_hydro-cell's ghost task. */
      scheduler_addunlock(s, t_xv, ci->hydro.super->hydro.ghost_in);

#else
      /* The send_rho task should unlock the super_hydro-cell's kick task. */
172
      scheduler_addunlock(s, t_rho, ci->super->end_force);
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205

      /* The send_rho task depends on the cell's ghost task. */
      scheduler_addunlock(s, ci->hydro.super->hydro.ghost_out, t_rho);

      /* The send_xv task should unlock the super_hydro-cell's ghost task. */
      scheduler_addunlock(s, t_xv, ci->hydro.super->hydro.ghost_in);

#endif

      /* Drift before you send */
      scheduler_addunlock(s, ci->hydro.super->hydro.drift, t_xv);
    }

    /* Add them to the local cell. */
    engine_addlink(e, &ci->mpi.hydro.send_xv, t_xv);
    engine_addlink(e, &ci->mpi.hydro.send_rho, t_rho);
#ifdef EXTRA_HYDRO_LOOP
    engine_addlink(e, &ci->mpi.hydro.send_gradient, t_gradient);
#endif
  }

  /* Recurse? */
  if (ci->split)
    for (int k = 0; k < 8; k++)
      if (ci->progeny[k] != NULL)
        engine_addtasks_send_hydro(e, ci->progeny[k], cj, t_xv, t_rho,
                                   t_gradient);

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

206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
/**
 * @brief Add send tasks for the stars pairs to a hierarchy of cells.
 *
 * @param e The #engine.
 * @param ci The sending #cell.
 * @param cj Dummy cell containing the nodeID of the receiving node.
 * @param t_xv The send_xv #task, if it has already been created.
 * @param t_rho The send_rho #task, if it has already been created.
 */
void engine_addtasks_send_stars(struct engine *e, struct cell *ci,
                                struct cell *cj, struct task *t_xv,
                                struct task *t_rho) {

#ifdef WITH_MPI
  struct link *l = NULL;
  struct scheduler *s = &e->sched;
  const int nodeID = cj->nodeID;

  /* Check if any of the density tasks are for the target node. */
  for (l = ci->stars.density; l != NULL; l = l->next)
    if (l->t->ci->nodeID == nodeID ||
        (l->t->cj != NULL && l->t->cj->nodeID == nodeID))
      break;

  /* If so, attach send tasks. */
  if (l != NULL) {
    /* Get the task if created in hydro part */
    struct link *hydro = NULL;
    for (hydro = ci->mpi.hydro.send_xv; hydro != NULL; hydro = hydro->next) {
      if (hydro->t->ci->nodeID == nodeID ||
          (hydro->t->cj != NULL && hydro->t->cj->nodeID == nodeID)) {
        break;
      }
    }

    // TODO Alexei: I guess that you can assume that if the send_xv exists,
    // send_rho exists too

    if (t_xv == NULL) {

      /* Already exists, just need to get it */
      if (hydro != NULL) {
        // TODO Alexei: set t_feedback
        t_xv = hydro->t;

        /* This task does not exists, need to create it */
      } else {

        // TODO Alexei: create task and do correct unlocks

        /* Make sure this cell is tagged. */
        cell_ensure_tagged(ci);

        /* Create the tasks and their dependencies? */
        t_xv = scheduler_addtask(s, task_type_send, task_subtype_xv,
                                 ci->mpi.tag, 0, ci, cj);

        /* Drift before you send */
        scheduler_addunlock(s, ci->hydro.super->hydro.drift, t_xv);
      }
    }

    if (hydro == NULL) {
      engine_addlink(e, &ci->mpi.hydro.send_xv, t_xv);
      // TODO Alexei: addlink
      /* engine_addlink(e, &ci->mpi.hydro.send_rho, t_rho); */
    }
  }

  /* Recurse? */
  if (ci->split)
    for (int k = 0; k < 8; k++)
      if (ci->progeny[k] != NULL)
        engine_addtasks_send_stars(e, ci->progeny[k], cj, t_xv, t_rho);

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

286
287
288
289
290
291
292
/**
 * @brief Add send tasks for the time-step to a hierarchy of cells.
 *
 * @param e The #engine.
 * @param ci The sending #cell.
 * @param cj Dummy cell containing the nodeID of the receiving node.
 * @param t_ti The send_ti #task, if it has already been created.
293
294
 * @param t_limiter The send_limiter #task, if already created.
 * @param with_limiter Are we running with the time-step limiter?
295
296
 */
void engine_addtasks_send_timestep(struct engine *e, struct cell *ci,
297
298
299
                                   struct cell *cj, struct task *t_ti,
                                   struct task *t_limiter,
                                   const int with_limiter) {
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324

#ifdef WITH_MPI
  struct link *l = NULL;
  struct scheduler *s = &e->sched;
  const int nodeID = cj->nodeID;

  /* Check if any of the gravity tasks are for the target node. */
  for (l = ci->grav.grav; l != NULL; l = l->next)
    if (l->t->ci->nodeID == nodeID ||
        (l->t->cj != NULL && l->t->cj->nodeID == nodeID))
      break;

  /* Check whether instead any of the hydro tasks are for the target node. */
  if (l == NULL)
    for (l = ci->hydro.density; l != NULL; l = l->next)
      if (l->t->ci->nodeID == nodeID ||
          (l->t->cj != NULL && l->t->cj->nodeID == nodeID))
        break;

  /* If found anything, attach send tasks. */
  if (l != NULL) {

    /* Create the tasks and their dependencies? */
    if (t_ti == NULL) {

Matthieu Schaller's avatar
Matthieu Schaller committed
325
326
      /* Make sure this cell is tagged. */
      cell_ensure_tagged(ci);
327
328
329
330

      t_ti = scheduler_addtask(s, task_type_send, task_subtype_tend,
                               ci->mpi.tag, 0, ci, cj);

331
332
333
334
      if (with_limiter)
        t_limiter = scheduler_addtask(s, task_type_send, task_subtype_limiter,
                                      ci->mpi.tag, 0, ci, cj);

335
336
      /* The super-cell's timestep task should unlock the send_ti task. */
      scheduler_addunlock(s, ci->super->timestep, t_ti);
337
338
339
340
341
342
      if (with_limiter) scheduler_addunlock(s, t_limiter, ci->super->timestep);
      if (with_limiter)
        scheduler_addunlock(s, t_limiter, ci->super->timestep_limiter);
      if (with_limiter) scheduler_addunlock(s, ci->super->kick2, t_limiter);
      if (with_limiter)
        scheduler_addunlock(s, ci->super->timestep_limiter, t_ti);
343
344
345
346
    }

    /* Add them to the local cell. */
    engine_addlink(e, &ci->mpi.send_ti, t_ti);
347
    if (with_limiter) engine_addlink(e, &ci->mpi.limiter.send, t_limiter);
348
349
350
351
352
353
  }

  /* Recurse? */
  if (ci->split)
    for (int k = 0; k < 8; k++)
      if (ci->progeny[k] != NULL)
354
355
        engine_addtasks_send_timestep(e, ci->progeny[k], cj, t_ti, t_limiter,
                                      with_limiter);
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430

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

/**
 * @brief Add recv tasks for hydro pairs to a hierarchy of cells.
 *
 * @param e The #engine.
 * @param c The foreign #cell.
 * @param t_xv The recv_xv #task, if it has already been created.
 * @param t_rho The recv_rho #task, if it has already been created.
 * @param t_gradient The recv_gradient #task, if it has already been created.
 */
void engine_addtasks_recv_hydro(struct engine *e, struct cell *c,
                                struct task *t_xv, struct task *t_rho,
                                struct task *t_gradient) {

#ifdef WITH_MPI
  struct scheduler *s = &e->sched;

  /* Have we reached a level where there are any hydro tasks ? */
  if (t_xv == NULL && c->hydro.density != NULL) {

#ifdef SWIFT_DEBUG_CHECKS
    /* Make sure this cell has a valid tag. */
    if (c->mpi.tag < 0) error("Trying to receive from untagged cell.");
#endif  // SWIFT_DEBUG_CHECKS

    /* Create the tasks. */
    t_xv = scheduler_addtask(s, task_type_recv, task_subtype_xv, c->mpi.tag, 0,
                             c, NULL);
    t_rho = scheduler_addtask(s, task_type_recv, task_subtype_rho, c->mpi.tag,
                              0, c, NULL);
#ifdef EXTRA_HYDRO_LOOP
    t_gradient = scheduler_addtask(s, task_type_recv, task_subtype_gradient,
                                   c->mpi.tag, 0, c, NULL);
#endif
  }

  c->mpi.hydro.recv_xv = t_xv;
  c->mpi.hydro.recv_rho = t_rho;
  c->mpi.hydro.recv_gradient = t_gradient;

  /* Add dependencies. */
  if (c->hydro.sorts != NULL) scheduler_addunlock(s, t_xv, c->hydro.sorts);

  for (struct link *l = c->hydro.density; l != NULL; l = l->next) {
    scheduler_addunlock(s, t_xv, l->t);
    scheduler_addunlock(s, l->t, t_rho);
  }
#ifdef EXTRA_HYDRO_LOOP
  for (struct link *l = c->hydro.gradient; l != NULL; l = l->next) {
    scheduler_addunlock(s, t_rho, l->t);
    scheduler_addunlock(s, l->t, t_gradient);
  }
  for (struct link *l = c->hydro.force; l != NULL; l = l->next)
    scheduler_addunlock(s, t_gradient, l->t);
#else
  for (struct link *l = c->hydro.force; l != NULL; l = l->next)
    scheduler_addunlock(s, t_rho, l->t);
#endif

  /* Recurse? */
  if (c->split)
    for (int k = 0; k < 8; k++)
      if (c->progeny[k] != NULL)
        engine_addtasks_recv_hydro(e, c->progeny[k], t_xv, t_rho, t_gradient);

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

431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
/**
 * @brief Add recv tasks for stars pairs to a hierarchy of cells.
 *
 * @param e The #engine.
 * @param c The foreign #cell.
 * @param t_xv The recv_xv #task, if it has already been created.
 * @param t_rho The recv_rho #task, if it has already been created.
 */
void engine_addtasks_recv_stars(struct engine *e, struct cell *c,
                                struct task *t_xv, struct task *t_rho) {

#ifdef WITH_MPI
  struct scheduler *s = &e->sched;
  int new_task = 0;

  /* Have we reached a level where there are any stars (or hydro) tasks ? */
  if (t_xv == NULL && (c->stars.density != NULL || c->hydro.density != NULL)) {

#ifdef SWIFT_DEBUG_CHECKS
    /* Make sure this cell has a valid tag. */
    if (c->mpi.tag < 0) error("Trying to receive from untagged cell.");
#endif  // SWIFT_DEBUG_CHECKS

    /* Create the tasks. */
    if (c->mpi.hydro.recv_xv == NULL) {
      new_task = 1;
      t_xv = scheduler_addtask(s, task_type_recv, task_subtype_xv, c->mpi.tag,
                               0, c, NULL);
      // TODO Alexei: create t_feedback task
      /* t_rho = scheduler_addtask(s, task_type_recv, task_subtype_rho,
       * c->mpi.tag, */
      /*                           0, c, NULL); */
    } else {
      // TODO Alexei: set t_feedback
      t_xv = c->mpi.hydro.recv_xv;
    }
  }

  // TODO Alexei: set pointer
  c->mpi.hydro.recv_xv = t_xv;
  /* c->mpi.hydro.recv_rho = t_rho; */

  /* Add dependencies. */
  if (c->hydro.sorts != NULL && new_task) {
    scheduler_addunlock(s, t_xv, c->hydro.sorts);
  }

  // TODO Alexei: You will need to sort the particles after receiving the spart

  for (struct link *l = c->stars.density; l != NULL; l = l->next) {
    scheduler_addunlock(s, t_xv, l->t);
    // TODO Alexei: I guess that you will need to unlock the recv here
    /* scheduler_addunlock(s, l->t, t_rho); */
  }
  // TODO Alexei: unlock feedback task
  /* for (struct link *l = c->hydro.force; l != NULL; l = l->next) */
  /*   scheduler_addunlock(s, t_rho, l->t); */
  /* Recurse? */
  if (c->split)
    for (int k = 0; k < 8; k++)
      if (c->progeny[k] != NULL)
        engine_addtasks_recv_stars(e, c->progeny[k], t_xv, t_rho);

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

499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
/**
 * @brief Add recv tasks for gravity pairs to a hierarchy of cells.
 *
 * @param e The #engine.
 * @param c The foreign #cell.
 * @param t_grav The recv_gpart #task, if it has already been created.
 */
void engine_addtasks_recv_gravity(struct engine *e, struct cell *c,
                                  struct task *t_grav) {

#ifdef WITH_MPI
  struct scheduler *s = &e->sched;

  /* Have we reached a level where there are any gravity tasks ? */
  if (t_grav == NULL && c->grav.grav != NULL) {

#ifdef SWIFT_DEBUG_CHECKS
    /* Make sure this cell has a valid tag. */
    if (c->mpi.tag < 0) error("Trying to receive from untagged cell.");
#endif  // SWIFT_DEBUG_CHECKS

    /* Create the tasks. */
    t_grav = scheduler_addtask(s, task_type_recv, task_subtype_gpart,
                               c->mpi.tag, 0, c, NULL);
  }

  c->mpi.grav.recv = t_grav;

  for (struct link *l = c->grav.grav; l != NULL; l = l->next)
    scheduler_addunlock(s, t_grav, l->t);

  /* Recurse? */
  if (c->split)
    for (int k = 0; k < 8; k++)
      if (c->progeny[k] != NULL)
        engine_addtasks_recv_gravity(e, c->progeny[k], t_grav);

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

/**
 * @brief Add recv tasks for gravity pairs to a hierarchy of cells.
 *
 * @param e The #engine.
 * @param c The foreign #cell.
 * @param t_ti The recv_ti #task, if already been created.
547
548
 * @param t_limiter The recv_limiter #task, if already created.
 * @param with_limiter Are we running with the time-step limiter?
549
550
 */
void engine_addtasks_recv_timestep(struct engine *e, struct cell *c,
551
552
                                   struct task *t_ti, struct task *t_limiter,
                                   const int with_limiter) {
553
554
555
556
557
558
559
560
561
562
563
564
565
566

#ifdef WITH_MPI
  struct scheduler *s = &e->sched;

  /* Have we reached a level where there are any self/pair tasks ? */
  if (t_ti == NULL && (c->grav.grav != NULL || c->hydro.density != NULL)) {

#ifdef SWIFT_DEBUG_CHECKS
    /* Make sure this cell has a valid tag. */
    if (c->mpi.tag < 0) error("Trying to receive from untagged cell.");
#endif  // SWIFT_DEBUG_CHECKS

    t_ti = scheduler_addtask(s, task_type_recv, task_subtype_tend, c->mpi.tag,
                             0, c, NULL);
567
568
569
570

    if (with_limiter)
      t_limiter = scheduler_addtask(s, task_type_recv, task_subtype_limiter,
                                    c->mpi.tag, 0, c, NULL);
571
572
573
574
  }

  c->mpi.recv_ti = t_ti;

575
  for (struct link *l = c->grav.grav; l != NULL; l = l->next) {
576
    scheduler_addunlock(s, l->t, t_ti);
577
  }
578

579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
  if (with_limiter) {

    for (struct link *l = c->hydro.force; l != NULL; l = l->next) {
      scheduler_addunlock(s, l->t, t_limiter);
    }

    for (struct link *l = c->hydro.limiter; l != NULL; l = l->next) {
      scheduler_addunlock(s, t_limiter, l->t);
      scheduler_addunlock(s, l->t, t_ti);
    }

  } else {

    for (struct link *l = c->hydro.force; l != NULL; l = l->next) {
      scheduler_addunlock(s, l->t, t_ti);
    }
  }
596
597
598
599
600

  /* Recurse? */
  if (c->split)
    for (int k = 0; k < 8; k++)
      if (c->progeny[k] != NULL)
601
602
        engine_addtasks_recv_timestep(e, c->progeny[k], t_ti, t_limiter,
                                      with_limiter);
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625

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

/**
 * @brief Generate the hydro hierarchical tasks for a hierarchy of cells -
 * i.e. all the O(Npart) tasks -- timestep version
 *
 * Tasks are only created here. The dependencies will be added later on.
 *
 * Note that there is no need to recurse below the super-cell. Note also
 * that we only add tasks if the relevant particles are present in the cell.
 *
 * @param e The #engine.
 * @param c The #cell.
 */
void engine_make_hierarchical_tasks_common(struct engine *e, struct cell *c) {

  struct scheduler *s = &e->sched;
  const int is_with_cooling = (e->policy & engine_policy_cooling);
  const int is_with_star_formation = (e->policy & engine_policy_star_formation);
626
  const int with_limiter = (e->policy & engine_policy_limiter);
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653

  /* Are we in a super-cell ? */
  if (c->super == c) {

    /* Local tasks only... */
    if (c->nodeID == e->nodeID) {

      /* Add the two half kicks */
      c->kick1 = scheduler_addtask(s, task_type_kick1, task_subtype_none, 0, 0,
                                   c, NULL);

#if defined(WITH_LOGGER)
      c->logger = scheduler_addtask(s, task_type_logger, task_subtype_none, 0,
                                    0, c, NULL);
#endif

      c->kick2 = scheduler_addtask(s, task_type_kick2, task_subtype_none, 0, 0,
                                   c, NULL);

      /* Add the time-step calculation task and its dependency */
      c->timestep = scheduler_addtask(s, task_type_timestep, task_subtype_none,
                                      0, 0, c, NULL);

      /* Add the task finishing the force calculation */
      c->end_force = scheduler_addtask(s, task_type_end_force,
                                       task_subtype_none, 0, 0, c, NULL);

654
      /* Subgrid tasks */
655
      if (is_with_cooling && c->hydro.count_total > 0) {
656
657
658
659
660
661
662
663
664
665
666

        c->hydro.cooling = scheduler_addtask(s, task_type_cooling,
                                             task_subtype_none, 0, 0, c, NULL);

        scheduler_addunlock(s, c->end_force, c->hydro.cooling);
        scheduler_addunlock(s, c->hydro.cooling, c->kick2);

      } else {
        scheduler_addunlock(s, c->end_force, c->kick2);
      }

667
      if (is_with_star_formation && c->hydro.count_total > 0) {
668
669
670
671
672
673
674
675
676
677

        c->hydro.star_formation = scheduler_addtask(
            s, task_type_star_formation, task_subtype_none, 0, 0, c, NULL);

        scheduler_addunlock(s, c->kick2, c->hydro.star_formation);
        scheduler_addunlock(s, c->hydro.star_formation, c->timestep);

      } else {
        scheduler_addunlock(s, c->kick2, c->timestep);
      }
678

679
680
      scheduler_addunlock(s, c->timestep, c->kick1);

681
682
683
684
685
686
687
688
689
690
      /* Time-step limiting */
      if (with_limiter) {
        c->timestep_limiter = scheduler_addtask(
            s, task_type_timestep_limiter, task_subtype_none, 0, 0, c, NULL);

        /* Make sure it is not run before kick2 */
        scheduler_addunlock(s, c->timestep, c->timestep_limiter);
        scheduler_addunlock(s, c->timestep_limiter, c->kick1);
      }

691
692
693
694
#if defined(WITH_LOGGER)
      scheduler_addunlock(s, c->kick1, c->logger);
#endif
    }
695
  } else { /* We are above the super-cell so need to go deeper */
696

697
698
699
    /* Recurse. */
    if (c->split)
      for (int k = 0; k < 8; k++)
700
701
        if (c->progeny[k] != NULL)
          engine_make_hierarchical_tasks_common(e, c->progeny[k]);
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
  }
}

/**
 * @brief Generate the hydro hierarchical tasks for a hierarchy of cells -
 * i.e. all the O(Npart) tasks -- gravity version
 *
 * Tasks are only created here. The dependencies will be added later on.
 *
 * Note that there is no need to recurse below the super-cell. Note also
 * that we only add tasks if the relevant particles are present in the cell.
 *
 * @param e The #engine.
 * @param c The #cell.
 */
void engine_make_hierarchical_tasks_gravity(struct engine *e, struct cell *c) {

  struct scheduler *s = &e->sched;
  const int periodic = e->s->periodic;
  const int is_self_gravity = (e->policy & engine_policy_self_gravity);

  /* Are we in a super-cell ? */
  if (c->grav.super == c) {

    /* Local tasks only... */
    if (c->nodeID == e->nodeID) {

      c->grav.drift = scheduler_addtask(s, task_type_drift_gpart,
                                        task_subtype_none, 0, 0, c, NULL);

      if (is_self_gravity) {

        /* Initialisation of the multipoles */
        c->grav.init = scheduler_addtask(s, task_type_init_grav,
                                         task_subtype_none, 0, 0, c, NULL);

        /* Gravity non-neighbouring pm calculations */
        c->grav.long_range = scheduler_addtask(
            s, task_type_grav_long_range, task_subtype_none, 0, 0, c, NULL);

        /* Gravity recursive down-pass */
        c->grav.down = scheduler_addtask(s, task_type_grav_down,
                                         task_subtype_none, 0, 0, c, NULL);

        /* Implicit tasks for the up and down passes */
747
748
        c->grav.drift_out = scheduler_addtask(s, task_type_drift_gpart_out,
                                              task_subtype_none, 0, 1, c, NULL);
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
        c->grav.init_out = scheduler_addtask(s, task_type_init_grav_out,
                                             task_subtype_none, 0, 1, c, NULL);
        c->grav.down_in = scheduler_addtask(s, task_type_grav_down_in,
                                            task_subtype_none, 0, 1, c, NULL);

        /* Gravity mesh force propagation */
        if (periodic)
          c->grav.mesh = scheduler_addtask(s, task_type_grav_mesh,
                                           task_subtype_none, 0, 0, c, NULL);

        if (periodic) scheduler_addunlock(s, c->grav.drift, c->grav.mesh);
        if (periodic) scheduler_addunlock(s, c->grav.mesh, c->grav.down);
        scheduler_addunlock(s, c->grav.init, c->grav.long_range);
        scheduler_addunlock(s, c->grav.long_range, c->grav.down);
        scheduler_addunlock(s, c->grav.down, c->super->end_force);

        /* Link in the implicit tasks */
        scheduler_addunlock(s, c->grav.init, c->grav.init_out);
767
        scheduler_addunlock(s, c->grav.drift, c->grav.drift_out);
768
769
770
771
772
773
        scheduler_addunlock(s, c->grav.down_in, c->grav.down);
      }
    }
  }

  /* We are below the super-cell but not below the maximal splitting depth */
774
  else if ((c->grav.super != NULL) &&
775
           ((c->maxdepth - c->depth) >= space_subdepth_diff_grav)) {
776
777
778
779
780
781

    /* Local tasks only... */
    if (c->nodeID == e->nodeID) {

      if (is_self_gravity) {

782
        c->grav.drift_out = scheduler_addtask(s, task_type_drift_gpart_out,
783
                                              task_subtype_none, 0, 1, c, NULL);
784

785
786
787
788
789
790
791
        c->grav.init_out = scheduler_addtask(s, task_type_init_grav_out,
                                             task_subtype_none, 0, 1, c, NULL);

        c->grav.down_in = scheduler_addtask(s, task_type_grav_down_in,
                                            task_subtype_none, 0, 1, c, NULL);

        scheduler_addunlock(s, c->parent->grav.init_out, c->grav.init_out);
792
        scheduler_addunlock(s, c->parent->grav.drift_out, c->grav.drift_out);
793
794
795
796
797
798
        scheduler_addunlock(s, c->grav.down_in, c->parent->grav.down_in);
      }
    }
  }

  /* Recurse but not below the maximal splitting depth */
799
  if (c->split && ((c->maxdepth - c->depth) >= space_subdepth_diff_grav))
800
801
802
803
804
805
806
807
808
809
810
811
    for (int k = 0; k < 8; k++)
      if (c->progeny[k] != NULL)
        engine_make_hierarchical_tasks_gravity(e, c->progeny[k]);
}

/**
 * @brief Recursively add non-implicit star ghost tasks to a cell hierarchy.
 */
void engine_add_stars_ghosts(struct engine *e, struct cell *c,
                             struct task *stars_ghost_in,
                             struct task *stars_ghost_out) {

812
813
814
  /* Abort as there are no star particles here? */
  if (c->stars.count_total == 0) return;

815
  /* If we have reached the leaf OR have to few particles to play with*/
816
  if (!c->split || c->stars.count_total < engine_max_sparts_per_ghost) {
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838

    /* Add the ghost task and its dependencies */
    struct scheduler *s = &e->sched;
    c->stars.ghost = scheduler_addtask(s, task_type_stars_ghost,
                                       task_subtype_none, 0, 0, c, NULL);
    scheduler_addunlock(s, stars_ghost_in, c->stars.ghost);
    scheduler_addunlock(s, c->stars.ghost, stars_ghost_out);
  } else {
    /* Keep recursing */
    for (int k = 0; k < 8; k++)
      if (c->progeny[k] != NULL)
        engine_add_stars_ghosts(e, c->progeny[k], stars_ghost_in,
                                stars_ghost_out);
  }
}

/**
 * @brief Recursively add non-implicit ghost tasks to a cell hierarchy.
 */
void engine_add_ghosts(struct engine *e, struct cell *c, struct task *ghost_in,
                       struct task *ghost_out) {

839
840
841
  /* Abort as there are no hydro particles here? */
  if (c->hydro.count_total == 0) return;

842
  /* If we have reached the leaf OR have to few particles to play with*/
843
  if (!c->split || c->hydro.count_total < engine_max_parts_per_ghost) {
844
845
846
847
848
849
850

    /* Add the ghost task and its dependencies */
    struct scheduler *s = &e->sched;
    c->hydro.ghost =
        scheduler_addtask(s, task_type_ghost, task_subtype_none, 0, 0, c, NULL);
    scheduler_addunlock(s, ghost_in, c->hydro.ghost);
    scheduler_addunlock(s, c->hydro.ghost, ghost_out);
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
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
  } else {
    /* Keep recursing */
    for (int k = 0; k < 8; k++)
      if (c->progeny[k] != NULL)
        engine_add_ghosts(e, c->progeny[k], ghost_in, ghost_out);
  }
}

/**
 * @brief Generate the hydro hierarchical tasks for a hierarchy of cells -
 * i.e. all the O(Npart) tasks -- hydro version
 *
 * Tasks are only created here. The dependencies will be added later on.
 *
 * Note that there is no need to recurse below the super-cell. Note also
 * that we only add tasks if the relevant particles are present in the cell.
 *
 * @param e The #engine.
 * @param c The #cell.
 */
void engine_make_hierarchical_tasks_hydro(struct engine *e, struct cell *c) {

  struct scheduler *s = &e->sched;

  /* Are we in a super-cell ? */
  if (c->hydro.super == c) {

    /* Add the sort task. */
    c->hydro.sorts =
        scheduler_addtask(s, task_type_sort, task_subtype_none, 0, 0, c, NULL);

    /* Local tasks only... */
    if (c->nodeID == e->nodeID) {

      /* Add the drift task. */
      c->hydro.drift = scheduler_addtask(s, task_type_drift_part,
                                         task_subtype_none, 0, 0, c, NULL);

      /* Generate the ghost tasks. */
      c->hydro.ghost_in =
          scheduler_addtask(s, task_type_ghost_in, task_subtype_none, 0,
                            /* implicit = */ 1, c, NULL);
      c->hydro.ghost_out =
          scheduler_addtask(s, task_type_ghost_out, task_subtype_none, 0,
                            /* implicit = */ 1, c, NULL);
      engine_add_ghosts(e, c, c->hydro.ghost_in, c->hydro.ghost_out);

#ifdef EXTRA_HYDRO_LOOP
      /* Generate the extra ghost task. */
      c->hydro.extra_ghost = scheduler_addtask(
          s, task_type_extra_ghost, task_subtype_none, 0, 0, c, NULL);
#endif
    }

  } else { /* We are above the super-cell so need to go deeper */

    /* Recurse. */
    if (c->split)
      for (int k = 0; k < 8; k++)
        if (c->progeny[k] != NULL)
          engine_make_hierarchical_tasks_hydro(e, c->progeny[k]);
  }
}

/**
 * @brief Generate the stars hierarchical tasks for a hierarchy of cells -
 * i.e. all the O(Npart) tasks -- star version
 *
 * Tasks are only created here. The dependencies will be added later on.
 *
 * Note that there is no need to recurse below the super-cell. Note also
 * that we only add tasks if the relevant particles are present in the cell.
 *
 * @param e The #engine.
 * @param c The #cell.
 */
void engine_make_hierarchical_tasks_stars(struct engine *e, struct cell *c) {

  struct scheduler *s = &e->sched;

  /* Are we in a super-cell ? */
  if (c->super == c) {

    /* Local tasks only... */
    if (c->nodeID == e->nodeID) {
937
938
939
940
      // TODO Alexei: do not need to be only on local node with feedback
      /* Add the sort task. */
      c->stars.sorts = scheduler_addtask(s, task_type_stars_sort,
                                         task_subtype_none, 0, 0, c, NULL);
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
970
971

      /* Generate the ghost tasks. */
      c->stars.ghost_in =
          scheduler_addtask(s, task_type_stars_ghost_in, task_subtype_none, 0,
                            /* implicit = */ 1, c, NULL);
      c->stars.ghost_out =
          scheduler_addtask(s, task_type_stars_ghost_out, task_subtype_none, 0,
                            /* implicit = */ 1, c, NULL);
      engine_add_stars_ghosts(e, c, c->stars.ghost_in, c->stars.ghost_out);
    }
  } else { /* We are above the super-cell so need to go deeper */

    /* Recurse. */
    if (c->split)
      for (int k = 0; k < 8; k++)
        if (c->progeny[k] != NULL)
          engine_make_hierarchical_tasks_stars(e, c->progeny[k]);
  }
}

/**
 * @brief Constructs the top-level tasks for the short-range gravity
 * and long-range gravity interactions.
 *
 * - All top-cells get a self task.
 * - All pairs within range according to the multipole acceptance
 *   criterion get a pair task.
 */
void engine_make_self_gravity_tasks_mapper(void *map_data, int num_elements,
                                           void *extra_data) {

Matthieu Schaller's avatar
Matthieu Schaller committed
972
  struct engine *e = (struct engine *)extra_data;
973
974
975
976
977
978
979
980
981
  struct space *s = e->s;
  struct scheduler *sched = &e->sched;
  const int nodeID = e->nodeID;
  const int periodic = s->periodic;
  const double dim[3] = {s->dim[0], s->dim[1], s->dim[2]};
  const int cdim[3] = {s->cdim[0], s->cdim[1], s->cdim[2]};
  struct cell *cells = s->cells_top;
  const double theta_crit = e->gravity_properties->theta_crit;
  const double max_distance = e->mesh->r_cut_max;
982
  const double max_distance2 = max_distance * max_distance;
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000

  /* Compute how many cells away we need to walk */
  const double distance = 2.5 * cells[0].width[0] / theta_crit;
  int delta = (int)(distance / cells[0].width[0]) + 1;
  int delta_m = delta;
  int delta_p = delta;

  /* Special case where every cell is in range of every other one */
  if (delta >= cdim[0] / 2) {
    if (cdim[0] % 2 == 0) {
      delta_m = cdim[0] / 2;
      delta_p = cdim[0] / 2 - 1;
    } else {
      delta_m = cdim[0] / 2;
      delta_p = cdim[0] / 2;
    }
  }

For faster browsing, not all history is shown. View entire blame