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
44 lines
1.4 KiB
C++
44 lines
1.4 KiB
C++
// SPDX-FileCopyrightText: Copyright (c) 2008-2018, NVIDIA Corporation. All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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/*! \file device_make_unique.h
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* \brief A factory function for creating `unique_ptr`s to device objects.
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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/allocate_unique.h>
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#include <thrust/detail/type_deduction.h>
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#include <thrust/device_allocator.h>
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#include <thrust/device_new.h>
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#include <thrust/device_ptr.h>
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THRUST_NAMESPACE_BEGIN
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///////////////////////////////////////////////////////////////////////////////
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template <typename T, typename... Args>
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_CCCL_HOST auto device_make_unique(Args&&... args)
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-> decltype(uninitialized_allocate_unique<T>(::cuda::std::declval<device_allocator<T>>()))
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{
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// FIXME: This is crude - we construct an unnecessary T on the host for
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// `device_new`. We need a proper dispatched `construct` algorithm to
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// do this properly.
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auto p = uninitialized_allocate_unique<T>(device_allocator<T>());
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device_new<T>(p.get(), T(THRUST_FWD(args)...));
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return p;
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}
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///////////////////////////////////////////////////////////////////////////////
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THRUST_NAMESPACE_END
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