56fd68e7dd
CCCL (CUDA C++ Core Libraries) provides: - CUB: device/block/warp-level GPU primitives (reduce, scan, sort, topk) - Thrust: high-level parallel algorithms (transform_reduce, sort, scan) - libcudacxx: CUDA C++ standard library (atomics, barriers, memory) - cudax: experimental features (memory resources, allocators) - Tuning policies: per-SM hardware-specific algorithm parameters Competition optimization vectors mapped to CCCL: - Output TPS (83% weight): warp_reduce, block_reduce, device_topk - Input TPS (14% weight): device_scan, block_load, prefetch - Cache TPS (3% weight): prefix caching strategy patterns - Memory (0.9 util): pooled/cached/buddy allocators Source: https://github.com/NVIDIA/cccl (shallow clone, HEAD only) License: Apache-2.0
73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
// SPDX-FileCopyrightText: Copyright (c) 2008-2013, NVIDIA Corporation. All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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/*! \file
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* \brief Deallocates storage allocated by \p device_malloc.
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*/
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#pragma once
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#include <thrust/detail/config.h>
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#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
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# pragma GCC system_header
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#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
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# pragma clang system_header
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#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
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# pragma system_header
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#endif // no system header
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#include <thrust/detail/malloc_and_free.h>
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#include <thrust/device_free.h>
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#include <thrust/device_ptr.h>
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#include <thrust/iterator/iterator_traits.h>
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#include <thrust/system/detail/generic/select_system.h>
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THRUST_NAMESPACE_BEGIN
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/*! \addtogroup memory_management Memory Management
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* \{
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*/
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/*! \p device_free deallocates memory allocated by the function \p device_malloc.
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*
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* \param ptr A \p device_ptr pointing to memory to be deallocated.
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*
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* The following code snippet demonstrates how to use \p device_free to
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* deallocate memory allocated by \p device_malloc.
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*
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* \code
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* #include <thrust/device_malloc.h>
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* #include <thrust/device_free.h>
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* ...
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* // allocate some integers with device_malloc
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* const int N = 100;
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* thrust::device_ptr<int> int_array = thrust::device_malloc<int>(N);
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*
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* // manipulate integers
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* ...
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*
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* // deallocate with device_free
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* thrust::device_free(int_array);
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* \endcode
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*
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* \see device_ptr
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* \see device_malloc
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*/
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inline void device_free(thrust::device_ptr<void> ptr)
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{
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using thrust::system::detail::generic::select_system;
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using system = thrust::iterator_system<thrust::device_ptr<void>>::type;
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// XXX lower to select_system(system) here
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system s;
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thrust::free(s, ptr);
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}
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/*! \} // memory_management
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*/
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THRUST_NAMESPACE_END
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