diff options
Diffstat (limited to 'external/cub-1.3.2/cub/grid/grid_mapping.cuh')
| -rw-r--r-- | external/cub-1.3.2/cub/grid/grid_mapping.cuh | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/external/cub-1.3.2/cub/grid/grid_mapping.cuh b/external/cub-1.3.2/cub/grid/grid_mapping.cuh new file mode 100644 index 0000000..ff6679b --- /dev/null +++ b/external/cub-1.3.2/cub/grid/grid_mapping.cuh @@ -0,0 +1,95 @@ +/****************************************************************************** + * Copyright (c) 2011, Duane Merrill. All rights reserved. + * Copyright (c) 2011-2014, 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) + |