Files
project_6/cccl_upstream/libcudacxx/include/cuda/__mdspan/traits.h
EngineX CI 56fd68e7dd [INFRA] Import NVIDIA/CCCL upstream as optimization reference library
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
2026-07-30 09:35:51 +00:00

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1.9 KiB
C++

//===----------------------------------------------------------------------===//
//
// Part of the libcu++ Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES.
//
//===----------------------------------------------------------------------===//
#ifndef _CUDA___MDSPAN_TRAITS_H
#define _CUDA___MDSPAN_TRAITS_H
#include <cuda/std/detail/__config>
#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
# pragma GCC system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
# pragma clang system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
# pragma system_header
#endif // no system header
#include <cuda/__fwd/mdspan.h>
#include <cuda/std/__fwd/mdspan.h>
#include <cuda/std/__type_traits/is_same.h>
#include <cuda/std/__cccl/prologue.h>
_CCCL_BEGIN_NAMESPACE_CUDA
template <typename _LayoutPolicy>
inline constexpr bool __is_layout_right_v = ::cuda::std::is_same_v<_LayoutPolicy, ::cuda::std::layout_right>;
template <typename _LayoutPolicy>
inline constexpr bool __is_layout_left_v = ::cuda::std::is_same_v<_LayoutPolicy, ::cuda::std::layout_left>;
template <typename _LayoutPolicy>
inline constexpr bool __is_layout_stride_v = ::cuda::std::is_same_v<_LayoutPolicy, ::cuda::std::layout_stride>;
template <typename _LayoutPolicy>
inline constexpr bool __is_layout_stride_relaxed_v =
::cuda::std::is_same_v<_LayoutPolicy, ::cuda::layout_stride_relaxed>;
template <typename _LayoutPolicy>
inline constexpr bool __is_cuda_mdspan_layout_v =
__is_layout_right_v<_LayoutPolicy> || __is_layout_left_v<_LayoutPolicy> || __is_layout_stride_v<_LayoutPolicy>
|| __is_layout_stride_relaxed_v<_LayoutPolicy>;
_CCCL_END_NAMESPACE_CUDA
#include <cuda/std/__cccl/epilogue.h>
#endif // _CUDA___MDSPAN_TRAITS_H