Arcane  v4.1.3.0
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WorkGroupLoopRange.cc
1// -*- tab-width: 2; indent-tabs-mode: nil; coding: utf-8-with-signature -*-
2//-----------------------------------------------------------------------------
3// Copyright 2000-2026 CEA (www.cea.fr) IFPEN (www.ifpenergiesnouvelles.com)
4// See the top-level COPYRIGHT file for details.
5// SPDX-License-Identifier: Apache-2.0
6//-----------------------------------------------------------------------------
7/*---------------------------------------------------------------------------*/
8/* WorkGroupLoopRange.cc (C) 2000-2026 */
9/* */
10/* Boucle pour le parallélisme hiérarchique. */
11/*---------------------------------------------------------------------------*/
12/*---------------------------------------------------------------------------*/
13
14#include "arccore/accelerator/WorkGroupLoopRange.h"
15
16#include "arccore/base/FatalErrorException.h"
17#include "arccore/common/accelerator/RunCommand.h"
18
19/*---------------------------------------------------------------------------*/
20/*---------------------------------------------------------------------------*/
21
22namespace Arcane::Accelerator
23{
24
25/*---------------------------------------------------------------------------*/
26/*---------------------------------------------------------------------------*/
27
28template <typename IndexType_> ARCCORE_ACCELERATOR_EXPORT void
29WorkGroupLoopRangeBase<IndexType_>::
30setBlockSize(Int32 block_size)
31{
32 if ((block_size <= 0) || ((block_size % 32) != 0))
33 ARCCORE_FATAL("Invalid value '{0}' for block size: should be a multiple of 32", block_size);
34 m_block_size = block_size;
35 _setNbBlock();
36}
37
38/*---------------------------------------------------------------------------*/
39/*---------------------------------------------------------------------------*/
40
41template <typename IndexType_> ARCCORE_ACCELERATOR_EXPORT void
42WorkGroupLoopRangeBase<IndexType_>::
43setBlockSize(const RunCommand& command)
44{
45 // TODO: en multi-threading, à calculer en fonction du nombre de threads
46 // disponibles et du nombre total d'éléments
47 Int32 block_size = 1024;
48 if (isAcceleratorPolicy(command.executionPolicy()))
49 block_size = 256;
50 setBlockSize(block_size);
51}
52
53/*---------------------------------------------------------------------------*/
54/*---------------------------------------------------------------------------*/
55
56template <typename IndexType_> void WorkGroupLoopRangeBase<IndexType_>::
57_setNbBlock()
58{
59 m_nb_block = (m_nb_element + (m_block_size - 1)) / m_block_size;
60}
61
62/*---------------------------------------------------------------------------*/
63/*---------------------------------------------------------------------------*/
64
65template class WorkGroupLoopRangeBase<Int32>;
66template class WorkGroupLoopRangeBase<Int64>;
67
68/*---------------------------------------------------------------------------*/
69/*---------------------------------------------------------------------------*/
70
71} // namespace Arcane::Accelerator
72
73/*---------------------------------------------------------------------------*/
74/*---------------------------------------------------------------------------*/
ARCCORE_FATAL
#define ARCCORE_FATAL(...)
Macro envoyant une exception FatalErrorException.
Definition ArccoreGlobal.h:532
Arcane::Accelerator::RunCommand::executionPolicy
eExecutionPolicy executionPolicy() const
Politique d'exécution de la commande.
Definition RunCommand.cc:59
Arcane::Accelerator::WorkGroupLoopRangeBase
Intervalle d'itération d'une boucle utilisant le parallélisme hiérarchique.
Definition arccore/src/accelerator/arccore/accelerator/WorkGroupLoopRange.h:661
Arcane::Accelerator::WorkGroupLoopRangeBase::setBlockSize
void setBlockSize(Int32 nb_block)
Positionne la taille d'un bloc.
Definition WorkGroupLoopRange.cc:30
Arcane::Accelerator
Espace de nom pour l'utilisation des accélérateurs.
Definition ArcaneTypes.h:639
Arcane::Accelerator::isAcceleratorPolicy
bool isAcceleratorPolicy(eExecutionPolicy exec_policy)
Indique si exec_policy correspond à un accélérateur.
Definition CommonAcceleratorGlobal.h:191
Arcane::Int32
std::int32_t Int32
Type entier signé sur 32 bits.
Definition ArccoreGlobal.h:225