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
66 lines
1.6 KiB
C++
66 lines
1.6 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 Deletes variables in device memory.
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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/allocator/destroy_range.h>
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#include <thrust/device_delete.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/execution_policy.h>
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THRUST_NAMESPACE_BEGIN
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namespace detail
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{
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// define an empty allocator class to use below
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struct device_delete_allocator
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{};
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} // namespace detail
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/*! \addtogroup memory_management Memory Management
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* \{
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*/
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/*! \p device_delete deletes a \p device_ptr allocated with
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* \p device_new.
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*
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* \param ptr The \p device_ptr to delete, assumed to have
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* been allocated with \p device_new.
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* \param n The number of objects to destroy at \p ptr. Defaults to \c 1
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* similar to \p device_new.
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*
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* \see device_ptr
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* \see device_new
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*
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* \verbatim embed:rst:leading-asterisk
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* .. versionadded:: 2.2.0
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* \endverbatim
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*/
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template <typename T>
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inline void device_delete(thrust::device_ptr<T> ptr, const size_t n = 1)
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{
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// we don't have an allocator, so there is no need to go through thrust::detail::destroy_range
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thrust::for_each_n(device, ptr, n, detail::gozer{});
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thrust::device_free(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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