96 lines
3.9 KiB
Plaintext
96 lines
3.9 KiB
Plaintext
/******************************************************************************
|
|
* Copyright (c) 2011, Duane Merrill. All rights reserved.
|
|
* Copyright (c) 2011-2013, NVIDIA CORPORATION. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* * Neither the name of the NVIDIA CORPORATION nor the
|
|
* names of its contributors may be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR ANY
|
|
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
******************************************************************************/
|
|
|
|
/**
|
|
* \file
|
|
* cub::GridMappingStrategy enumerates alternative strategies for mapping constant-sized tiles of device-wide data onto a grid of CUDA thread blocks.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "../util_namespace.cuh"
|
|
|
|
/// Optional outer namespace(s)
|
|
CUB_NS_PREFIX
|
|
|
|
/// CUB namespace
|
|
namespace cub {
|
|
|
|
|
|
/**
|
|
* \addtogroup GridModule
|
|
* @{
|
|
*/
|
|
|
|
|
|
/******************************************************************************
|
|
* Mapping policies
|
|
*****************************************************************************/
|
|
|
|
|
|
/**
|
|
* \brief cub::GridMappingStrategy enumerates alternative strategies for mapping constant-sized tiles of device-wide data onto a grid of CUDA thread blocks.
|
|
*/
|
|
enum GridMappingStrategy
|
|
{
|
|
/**
|
|
* \brief An "even-share" strategy for assigning input tiles to thread blocks.
|
|
*
|
|
* \par Overview
|
|
* The input is evenly partitioned into \p p segments, where \p p is
|
|
* constant and corresponds loosely to the number of thread blocks that may
|
|
* actively reside on the target device. Each segment is comprised of
|
|
* consecutive tiles, where a tile is a small, constant-sized unit of input
|
|
* to be processed to completion before the thread block terminates or
|
|
* obtains more work. The kernel invokes \p p thread blocks, each
|
|
* of which iteratively consumes a segment of <em>n</em>/<em>p</em> elements
|
|
* in tile-size increments.
|
|
*/
|
|
GRID_MAPPING_EVEN_SHARE,
|
|
|
|
/**
|
|
* \brief A dynamic "queue-based" strategy for assigning input tiles to thread blocks.
|
|
*
|
|
* \par Overview
|
|
* The input is treated as a queue to be dynamically consumed by a grid of
|
|
* thread blocks. Work is atomically dequeued in tiles, where a tile is a
|
|
* unit of input to be processed to completion before the thread block
|
|
* terminates or obtains more work. The grid size \p p is constant,
|
|
* loosely corresponding to the number of thread blocks that may actively
|
|
* reside on the target device.
|
|
*/
|
|
GRID_MAPPING_DYNAMIC,
|
|
};
|
|
|
|
|
|
/** @} */ // end group GridModule
|
|
|
|
} // CUB namespace
|
|
CUB_NS_POSTFIX // Optional outer namespace(s)
|
|
|