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block_adjacent_difference.cuh
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1/******************************************************************************
2 * Copyright (c) 2011, Duane Merrill. All rights reserved.
3 * Copyright (c) 2011-2018, NVIDIA CORPORATION. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the NVIDIA CORPORATION nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 ******************************************************************************/
28
34#pragma once
35
36#include "../util_type.cuh"
37#include "../util_ptx.cuh"
38#include "../util_namespace.cuh"
39
41CUB_NS_PREFIX
42
44namespace cub {
45
46template <
47 typename T,
48 int BLOCK_DIM_X,
49 int BLOCK_DIM_Y = 1,
50 int BLOCK_DIM_Z = 1,
51 int PTX_ARCH = CUB_PTX_ARCH>
52class BlockAdjacentDifference
53{
54private:
55
56 /******************************************************************************
57 * Constants and type definitions
58 ******************************************************************************/
59
61 enum
62 {
64 BLOCK_THREADS = BLOCK_DIM_X * BLOCK_DIM_Y * BLOCK_DIM_Z,
65 };
66
67
69 struct _TempStorage
70 {
71 T first_items[BLOCK_THREADS];
72 T last_items[BLOCK_THREADS];
73 };
74
75
76 /******************************************************************************
77 * Utility methods
78 ******************************************************************************/
79
81 __device__ __forceinline__ _TempStorage& PrivateStorage()
82 {
83 __shared__ _TempStorage private_storage;
84 return private_storage;
85 }
86
87
89 template <typename FlagOp, bool HAS_PARAM = BinaryOpHasIdxParam<T, FlagOp>::HAS_PARAM>
90 struct ApplyOp
91 {
92 // Apply flag operator
93 static __device__ __forceinline__ T FlagT(FlagOp flag_op, const T &a, const T &b, int idx)
94 {
95 return flag_op(b, a, idx);
96 }
97 };
98
100 template <typename FlagOp>
101 struct ApplyOp<FlagOp, false>
102 {
103 // Apply flag operator
104 static __device__ __forceinline__ T FlagT(FlagOp flag_op, const T &a, const T &b, int /*idx*/)
105 {
106 return flag_op(b, a);
107 }
108 };
109
111 template <int ITERATION, int MAX_ITERATIONS>
112 struct Iterate
113 {
114 // Head flags
115 template <
116 int ITEMS_PER_THREAD,
117 typename FlagT,
118 typename FlagOp>
119 static __device__ __forceinline__ void FlagHeads(
120 int linear_tid,
121 FlagT (&flags)[ITEMS_PER_THREAD],
122 T (&input)[ITEMS_PER_THREAD],
123 T (&preds)[ITEMS_PER_THREAD],
124 FlagOp flag_op)
125 {
126 preds[ITERATION] = input[ITERATION - 1];
127
128 flags[ITERATION] = ApplyOp<FlagOp>::FlagT(
129 flag_op,
130 preds[ITERATION],
131 input[ITERATION],
132 (linear_tid * ITEMS_PER_THREAD) + ITERATION);
133
134 Iterate<ITERATION + 1, MAX_ITERATIONS>::FlagHeads(linear_tid, flags, input, preds, flag_op);
135 }
136
137 // Tail flags
138 template <
139 int ITEMS_PER_THREAD,
140 typename FlagT,
141 typename FlagOp>
142 static __device__ __forceinline__ void FlagTails(
143 int linear_tid,
144 FlagT (&flags)[ITEMS_PER_THREAD],
145 T (&input)[ITEMS_PER_THREAD],
146 FlagOp flag_op)
147 {
148 flags[ITERATION] = ApplyOp<FlagOp>::FlagT(
149 flag_op,
150 input[ITERATION],
151 input[ITERATION + 1],
152 (linear_tid * ITEMS_PER_THREAD) + ITERATION + 1);
153
154 Iterate<ITERATION + 1, MAX_ITERATIONS>::FlagTails(linear_tid, flags, input, flag_op);
155 }
156
157 };
158
160 template <int MAX_ITERATIONS>
161 struct Iterate<MAX_ITERATIONS, MAX_ITERATIONS>
162 {
163 // Head flags
164 template <
165 int ITEMS_PER_THREAD,
166 typename FlagT,
167 typename FlagOp>
168 static __device__ __forceinline__ void FlagHeads(
169 int /*linear_tid*/,
170 FlagT (&/*flags*/)[ITEMS_PER_THREAD],
171 T (&/*input*/)[ITEMS_PER_THREAD],
172 T (&/*preds*/)[ITEMS_PER_THREAD],
173 FlagOp /*flag_op*/)
174 {}
175
176 // Tail flags
177 template <
178 int ITEMS_PER_THREAD,
179 typename FlagT,
180 typename FlagOp>
181 static __device__ __forceinline__ void FlagTails(
182 int /*linear_tid*/,
183 FlagT (&/*flags*/)[ITEMS_PER_THREAD],
184 T (&/*input*/)[ITEMS_PER_THREAD],
185 FlagOp /*flag_op*/)
186 {}
187 };
188
189
190 /******************************************************************************
191 * Thread fields
192 ******************************************************************************/
193
195 _TempStorage &temp_storage;
196
198 unsigned int linear_tid;
199
200
201public:
202
204 struct TempStorage : Uninitialized<_TempStorage> {};
205
206
207 /******************************************************************/
211
215 __device__ __forceinline__ BlockAdjacentDifference()
216 :
217 temp_storage(PrivateStorage()),
218 linear_tid(RowMajorTid(BLOCK_DIM_X, BLOCK_DIM_Y, BLOCK_DIM_Z))
219 {}
220
221
225 __device__ __forceinline__ BlockAdjacentDifference(
226 TempStorage &temp_storage)
227 :
228 temp_storage(temp_storage.Alias()),
229 linear_tid(RowMajorTid(BLOCK_DIM_X, BLOCK_DIM_Y, BLOCK_DIM_Z))
230 {}
231
232
234 /******************************************************************/
238
239
240#ifndef DOXYGEN_SHOULD_SKIP_THIS // Do not document
241
242 template <
243 int ITEMS_PER_THREAD,
244 typename FlagT,
245 typename FlagOp>
246 __device__ __forceinline__ void FlagHeads(
247 FlagT (&head_flags)[ITEMS_PER_THREAD],
248 T (&input)[ITEMS_PER_THREAD],
249 T (&preds)[ITEMS_PER_THREAD],
250 FlagOp flag_op)
251 {
252 // Share last item
253 temp_storage.last_items[linear_tid] = input[ITEMS_PER_THREAD - 1];
254
255 CTA_SYNC();
256
257 if (linear_tid == 0)
258 {
259 // Set flag for first thread-item (preds[0] is undefined)
260 head_flags[0] = 1;
261 }
262 else
263 {
264 preds[0] = temp_storage.last_items[linear_tid - 1];
265 head_flags[0] = ApplyOp<FlagOp>::FlagT(flag_op, preds[0], input[0], linear_tid * ITEMS_PER_THREAD);
266 }
267
268 // Set head_flags for remaining items
269 Iterate<1, ITEMS_PER_THREAD>::FlagHeads(linear_tid, head_flags, input, preds, flag_op);
270 }
271
272 template <
273 int ITEMS_PER_THREAD,
274 typename FlagT,
275 typename FlagOp>
276 __device__ __forceinline__ void FlagHeads(
277 FlagT (&head_flags)[ITEMS_PER_THREAD],
278 T (&input)[ITEMS_PER_THREAD],
279 T (&preds)[ITEMS_PER_THREAD],
280 FlagOp flag_op,
281 T tile_predecessor_item)
282 {
283 // Share last item
284 temp_storage.last_items[linear_tid] = input[ITEMS_PER_THREAD - 1];
285
286 CTA_SYNC();
287
288 // Set flag for first thread-item
289 preds[0] = (linear_tid == 0) ?
290 tile_predecessor_item : // First thread
291 temp_storage.last_items[linear_tid - 1];
292
293 head_flags[0] = ApplyOp<FlagOp>::FlagT(flag_op, preds[0], input[0], linear_tid * ITEMS_PER_THREAD);
294
295 // Set head_flags for remaining items
296 Iterate<1, ITEMS_PER_THREAD>::FlagHeads(linear_tid, head_flags, input, preds, flag_op);
297 }
298
299#endif // DOXYGEN_SHOULD_SKIP_THIS
300
301
302 template <
303 int ITEMS_PER_THREAD,
304 typename FlagT,
305 typename FlagOp>
306 __device__ __forceinline__ void FlagHeads(
307 FlagT (&head_flags)[ITEMS_PER_THREAD],
308 T (&input)[ITEMS_PER_THREAD],
309 FlagOp flag_op)
310 {
311 T preds[ITEMS_PER_THREAD];
312 FlagHeads(head_flags, input, preds, flag_op);
313 }
314
315
316 template <
317 int ITEMS_PER_THREAD,
318 typename FlagT,
319 typename FlagOp>
320 __device__ __forceinline__ void FlagHeads(
321 FlagT (&head_flags)[ITEMS_PER_THREAD],
322 T (&input)[ITEMS_PER_THREAD],
323 FlagOp flag_op,
324 T tile_predecessor_item)
325 {
326 T preds[ITEMS_PER_THREAD];
327 FlagHeads(head_flags, input, preds, flag_op, tile_predecessor_item);
328 }
329
330
331
332 template <
333 int ITEMS_PER_THREAD,
334 typename FlagT,
335 typename FlagOp>
336 __device__ __forceinline__ void FlagTails(
337 FlagT (&tail_flags)[ITEMS_PER_THREAD],
338 T (&input)[ITEMS_PER_THREAD],
339 FlagOp flag_op)
340 {
341 // Share first item
342 temp_storage.first_items[linear_tid] = input[0];
343
344 CTA_SYNC();
345
346 // Set flag for last thread-item
347 tail_flags[ITEMS_PER_THREAD - 1] = (linear_tid == BLOCK_THREADS - 1) ?
348 1 : // Last thread
349 ApplyOp<FlagOp>::FlagT(
350 flag_op,
351 input[ITEMS_PER_THREAD - 1],
352 temp_storage.first_items[linear_tid + 1],
353 (linear_tid * ITEMS_PER_THREAD) + ITEMS_PER_THREAD);
354
355 // Set tail_flags for remaining items
356 Iterate<0, ITEMS_PER_THREAD - 1>::FlagTails(linear_tid, tail_flags, input, flag_op);
357 }
358
359
360 template <
361 int ITEMS_PER_THREAD,
362 typename FlagT,
363 typename FlagOp>
364 __device__ __forceinline__ void FlagTails(
365 FlagT (&tail_flags)[ITEMS_PER_THREAD],
366 T (&input)[ITEMS_PER_THREAD],
367 FlagOp flag_op,
368 T tile_successor_item)
369 {
370 // Share first item
371 temp_storage.first_items[linear_tid] = input[0];
372
373 CTA_SYNC();
374
375 // Set flag for last thread-item
376 T successor_item = (linear_tid == BLOCK_THREADS - 1) ?
377 tile_successor_item : // Last thread
378 temp_storage.first_items[linear_tid + 1];
379
380 tail_flags[ITEMS_PER_THREAD - 1] = ApplyOp<FlagOp>::FlagT(
381 flag_op,
382 input[ITEMS_PER_THREAD - 1],
383 successor_item,
384 (linear_tid * ITEMS_PER_THREAD) + ITEMS_PER_THREAD);
385
386 // Set tail_flags for remaining items
387 Iterate<0, ITEMS_PER_THREAD - 1>::FlagTails(linear_tid, tail_flags, input, flag_op);
388 }
389
390
391 template <
392 int ITEMS_PER_THREAD,
393 typename FlagT,
394 typename FlagOp>
395 __device__ __forceinline__ void FlagHeadsAndTails(
396 FlagT (&head_flags)[ITEMS_PER_THREAD],
397 FlagT (&tail_flags)[ITEMS_PER_THREAD],
398 T (&input)[ITEMS_PER_THREAD],
399 FlagOp flag_op)
400 {
401 // Share first and last items
402 temp_storage.first_items[linear_tid] = input[0];
403 temp_storage.last_items[linear_tid] = input[ITEMS_PER_THREAD - 1];
404
405 CTA_SYNC();
406
407 T preds[ITEMS_PER_THREAD];
408
409 // Set flag for first thread-item
410 preds[0] = temp_storage.last_items[linear_tid - 1];
411 if (linear_tid == 0)
412 {
413 head_flags[0] = 1;
414 }
415 else
416 {
417 head_flags[0] = ApplyOp<FlagOp>::FlagT(
418 flag_op,
419 preds[0],
420 input[0],
421 linear_tid * ITEMS_PER_THREAD);
422 }
423
424
425 // Set flag for last thread-item
426 tail_flags[ITEMS_PER_THREAD - 1] = (linear_tid == BLOCK_THREADS - 1) ?
427 1 : // Last thread
428 ApplyOp<FlagOp>::FlagT(
429 flag_op,
430 input[ITEMS_PER_THREAD - 1],
431 temp_storage.first_items[linear_tid + 1],
432 (linear_tid * ITEMS_PER_THREAD) + ITEMS_PER_THREAD);
433
434 // Set head_flags for remaining items
435 Iterate<1, ITEMS_PER_THREAD>::FlagHeads(linear_tid, head_flags, input, preds, flag_op);
436
437 // Set tail_flags for remaining items
438 Iterate<0, ITEMS_PER_THREAD - 1>::FlagTails(linear_tid, tail_flags, input, flag_op);
439 }
440
441
442 template <
443 int ITEMS_PER_THREAD,
444 typename FlagT,
445 typename FlagOp>
446 __device__ __forceinline__ void FlagHeadsAndTails(
447 FlagT (&head_flags)[ITEMS_PER_THREAD],
448 FlagT (&tail_flags)[ITEMS_PER_THREAD],
449 T tile_successor_item,
450 T (&input)[ITEMS_PER_THREAD],
451 FlagOp flag_op)
452 {
453 // Share first and last items
454 temp_storage.first_items[linear_tid] = input[0];
455 temp_storage.last_items[linear_tid] = input[ITEMS_PER_THREAD - 1];
456
457 CTA_SYNC();
458
459 T preds[ITEMS_PER_THREAD];
460
461 // Set flag for first thread-item
462 if (linear_tid == 0)
463 {
464 head_flags[0] = 1;
465 }
466 else
467 {
468 preds[0] = temp_storage.last_items[linear_tid - 1];
469 head_flags[0] = ApplyOp<FlagOp>::FlagT(
470 flag_op,
471 preds[0],
472 input[0],
473 linear_tid * ITEMS_PER_THREAD);
474 }
475
476 // Set flag for last thread-item
477 T successor_item = (linear_tid == BLOCK_THREADS - 1) ?
478 tile_successor_item : // Last thread
479 temp_storage.first_items[linear_tid + 1];
480
481 tail_flags[ITEMS_PER_THREAD - 1] = ApplyOp<FlagOp>::FlagT(
482 flag_op,
483 input[ITEMS_PER_THREAD - 1],
484 successor_item,
485 (linear_tid * ITEMS_PER_THREAD) + ITEMS_PER_THREAD);
486
487 // Set head_flags for remaining items
488 Iterate<1, ITEMS_PER_THREAD>::FlagHeads(linear_tid, head_flags, input, preds, flag_op);
489
490 // Set tail_flags for remaining items
491 Iterate<0, ITEMS_PER_THREAD - 1>::FlagTails(linear_tid, tail_flags, input, flag_op);
492 }
493
494 template <
495 int ITEMS_PER_THREAD,
496 typename FlagT,
497 typename FlagOp>
498 __device__ __forceinline__ void FlagHeadsAndTails(
499 FlagT (&head_flags)[ITEMS_PER_THREAD],
500 T tile_predecessor_item,
501 FlagT (&tail_flags)[ITEMS_PER_THREAD],
502 T (&input)[ITEMS_PER_THREAD],
503 FlagOp flag_op)
504 {
505 // Share first and last items
506 temp_storage.first_items[linear_tid] = input[0];
507 temp_storage.last_items[linear_tid] = input[ITEMS_PER_THREAD - 1];
508
509 CTA_SYNC();
510
511 T preds[ITEMS_PER_THREAD];
512
513 // Set flag for first thread-item
514 preds[0] = (linear_tid == 0) ?
515 tile_predecessor_item : // First thread
516 temp_storage.last_items[linear_tid - 1];
517
518 head_flags[0] = ApplyOp<FlagOp>::FlagT(
519 flag_op,
520 preds[0],
521 input[0],
522 linear_tid * ITEMS_PER_THREAD);
523
524 // Set flag for last thread-item
525 tail_flags[ITEMS_PER_THREAD - 1] = (linear_tid == BLOCK_THREADS - 1) ?
526 1 : // Last thread
527 ApplyOp<FlagOp>::FlagT(
528 flag_op,
529 input[ITEMS_PER_THREAD - 1],
530 temp_storage.first_items[linear_tid + 1],
531 (linear_tid * ITEMS_PER_THREAD) + ITEMS_PER_THREAD);
532
533 // Set head_flags for remaining items
534 Iterate<1, ITEMS_PER_THREAD>::FlagHeads(linear_tid, head_flags, input, preds, flag_op);
535
536 // Set tail_flags for remaining items
537 Iterate<0, ITEMS_PER_THREAD - 1>::FlagTails(linear_tid, tail_flags, input, flag_op);
538 }
539
540
541 template <
542 int ITEMS_PER_THREAD,
543 typename FlagT,
544 typename FlagOp>
545 __device__ __forceinline__ void FlagHeadsAndTails(
546 FlagT (&head_flags)[ITEMS_PER_THREAD],
547 T tile_predecessor_item,
548 FlagT (&tail_flags)[ITEMS_PER_THREAD],
549 T tile_successor_item,
550 T (&input)[ITEMS_PER_THREAD],
551 FlagOp flag_op)
552 {
553 // Share first and last items
554 temp_storage.first_items[linear_tid] = input[0];
555 temp_storage.last_items[linear_tid] = input[ITEMS_PER_THREAD - 1];
556
557 CTA_SYNC();
558
559 T preds[ITEMS_PER_THREAD];
560
561 // Set flag for first thread-item
562 preds[0] = (linear_tid == 0) ?
563 tile_predecessor_item : // First thread
564 temp_storage.last_items[linear_tid - 1];
565
566 head_flags[0] = ApplyOp<FlagOp>::FlagT(
567 flag_op,
568 preds[0],
569 input[0],
570 linear_tid * ITEMS_PER_THREAD);
571
572 // Set flag for last thread-item
573 T successor_item = (linear_tid == BLOCK_THREADS - 1) ?
574 tile_successor_item : // Last thread
575 temp_storage.first_items[linear_tid + 1];
576
577 tail_flags[ITEMS_PER_THREAD - 1] = ApplyOp<FlagOp>::FlagT(
578 flag_op,
579 input[ITEMS_PER_THREAD - 1],
580 successor_item,
581 (linear_tid * ITEMS_PER_THREAD) + ITEMS_PER_THREAD);
582
583 // Set head_flags for remaining items
584 Iterate<1, ITEMS_PER_THREAD>::FlagHeads(linear_tid, head_flags, input, preds, flag_op);
585
586 // Set tail_flags for remaining items
587 Iterate<0, ITEMS_PER_THREAD - 1>::FlagTails(linear_tid, tail_flags, input, flag_op);
588 }
589
590
591
592};
593
594
595} // CUB namespace
596CUB_NS_POSTFIX // Optional outer namespace(s)
cub::BlockAdjacentDifference::BLOCK_THREADS
@ BLOCK_THREADS
The thread block size in threads.
Definition block_adjacent_difference.cuh:64
cub::BlockAdjacentDifference::PrivateStorage
__device__ __forceinline__ _TempStorage & PrivateStorage()
Internal storage allocator.
Definition block_adjacent_difference.cuh:81
cub::BlockAdjacentDifference::FlagHeads
__device__ __forceinline__ void FlagHeads(FlagT(&head_flags)[ITEMS_PER_THREAD], T(&input)[ITEMS_PER_THREAD], T(&preds)[ITEMS_PER_THREAD], FlagOp flag_op, T tile_predecessor_item)
Definition block_adjacent_difference.cuh:276
cub::BlockAdjacentDifference::BlockAdjacentDifference
__device__ __forceinline__ BlockAdjacentDifference()
Collective constructor using a private static allocation of shared memory as temporary storage.
Definition block_adjacent_difference.cuh:215
cub::BlockAdjacentDifference::FlagHeads
__device__ __forceinline__ void FlagHeads(FlagT(&head_flags)[ITEMS_PER_THREAD], T(&input)[ITEMS_PER_THREAD], T(&preds)[ITEMS_PER_THREAD], FlagOp flag_op)
Definition block_adjacent_difference.cuh:246
cub::BlockAdjacentDifference::linear_tid
unsigned int linear_tid
Linear thread-id.
Definition block_adjacent_difference.cuh:198
cub::BlockAdjacentDifference::FlagHeadsAndTails
__device__ __forceinline__ void FlagHeadsAndTails(FlagT(&head_flags)[ITEMS_PER_THREAD], T tile_predecessor_item, FlagT(&tail_flags)[ITEMS_PER_THREAD], T tile_successor_item, T(&input)[ITEMS_PER_THREAD], FlagOp flag_op)
Definition block_adjacent_difference.cuh:545
cub::BlockAdjacentDifference::FlagHeads
__device__ __forceinline__ void FlagHeads(FlagT(&head_flags)[ITEMS_PER_THREAD], T(&input)[ITEMS_PER_THREAD], FlagOp flag_op, T tile_predecessor_item)
Definition block_adjacent_difference.cuh:320
cub::BlockAdjacentDifference::BlockAdjacentDifference
__device__ __forceinline__ BlockAdjacentDifference(TempStorage &temp_storage)
Collective constructor using the specified memory allocation as temporary storage.
Definition block_adjacent_difference.cuh:225
cub::BlockAdjacentDifference::FlagHeadsAndTails
__device__ __forceinline__ void FlagHeadsAndTails(FlagT(&head_flags)[ITEMS_PER_THREAD], T tile_predecessor_item, FlagT(&tail_flags)[ITEMS_PER_THREAD], T(&input)[ITEMS_PER_THREAD], FlagOp flag_op)
Definition block_adjacent_difference.cuh:498
cub::BlockAdjacentDifference::FlagTails
__device__ __forceinline__ void FlagTails(FlagT(&tail_flags)[ITEMS_PER_THREAD], T(&input)[ITEMS_PER_THREAD], FlagOp flag_op)
Definition block_adjacent_difference.cuh:336
cub::BlockAdjacentDifference::FlagHeadsAndTails
__device__ __forceinline__ void FlagHeadsAndTails(FlagT(&head_flags)[ITEMS_PER_THREAD], FlagT(&tail_flags)[ITEMS_PER_THREAD], T(&input)[ITEMS_PER_THREAD], FlagOp flag_op)
Definition block_adjacent_difference.cuh:395
cub::BlockAdjacentDifference::FlagTails
__device__ __forceinline__ void FlagTails(FlagT(&tail_flags)[ITEMS_PER_THREAD], T(&input)[ITEMS_PER_THREAD], FlagOp flag_op, T tile_successor_item)
Definition block_adjacent_difference.cuh:364
cub::BlockAdjacentDifference::FlagHeads
__device__ __forceinline__ void FlagHeads(FlagT(&head_flags)[ITEMS_PER_THREAD], T(&input)[ITEMS_PER_THREAD], FlagOp flag_op)
Definition block_adjacent_difference.cuh:306
cub::BlockAdjacentDifference::FlagHeadsAndTails
__device__ __forceinline__ void FlagHeadsAndTails(FlagT(&head_flags)[ITEMS_PER_THREAD], FlagT(&tail_flags)[ITEMS_PER_THREAD], T tile_successor_item, T(&input)[ITEMS_PER_THREAD], FlagOp flag_op)
Definition block_adjacent_difference.cuh:446
cub::BlockAdjacentDifference::temp_storage
_TempStorage & temp_storage
Shared storage reference.
Definition block_adjacent_difference.cuh:195
cub::RowMajorTid
__device__ __forceinline__ int RowMajorTid(int block_dim_x, int block_dim_y, int block_dim_z)
Returns the row-major linear thread identifier for a multidimensional thread block.
Definition util_ptx.cuh:409
cub::CTA_SYNC
CTA_SYNC()
Definition util_ptx.cuh:255
cub
Optional outer namespace(s)
Definition agent_histogram.cuh:48
cub::BlockAdjacentDifference::ApplyOp
Specialization for when FlagOp has third index param.
Definition block_adjacent_difference.cuh:91
cub::BlockAdjacentDifference::Iterate
Templated unrolling of item comparison (inductive case)
Definition block_adjacent_difference.cuh:113
cub::BlockAdjacentDifference::Iterate::FlagHeads
static __device__ __forceinline__ void FlagHeads(int linear_tid, FlagT(&flags)[ITEMS_PER_THREAD], T(&input)[ITEMS_PER_THREAD], T(&preds)[ITEMS_PER_THREAD], FlagOp flag_op)
Definition block_adjacent_difference.cuh:119
cub::BlockAdjacentDifference::Iterate::FlagTails
static __device__ __forceinline__ void FlagTails(int linear_tid, FlagT(&flags)[ITEMS_PER_THREAD], T(&input)[ITEMS_PER_THREAD], FlagOp flag_op)
Definition block_adjacent_difference.cuh:142
cub::BlockAdjacentDifference::_TempStorage
Shared memory storage layout type (last element from each thread's input)
Definition block_adjacent_difference.cuh:70
cub::Uninitialized
A storage-backing wrapper that allows types with non-trivial constructors to be aliased in unions.
Definition util_type.cuh:635
CUB_PTX_ARCH
#define CUB_PTX_ARCH
CUB_PTX_ARCH reflects the PTX version targeted by the active compiler pass (or zero during the host p...
Definition util_arch.cuh:53