dedf08166a
Added 863 files from NVIDIA/cccl sparse checkout: - c2h/ (27 files): Catch2 test helpers — generators, validators, runner - nvbench_helper/ (10 files): Benchmark harness utilities - cmake/ (29 files): CMake presets and build helpers - cudax/ (794 files): Experimental CUDA extensions - AGENTS.md: NVIDIA's official AI agent instructions for CCCL - CMakePresets.json: Standardized build configurations - cccl-version.json: Version tracking Also added CCCL_ASSET_MAP.md mapping all 4295 CCCL files to competition value and PRD items. cccl_upstream now covers 100% of competition-critical assets: - 27 tuning headers (SM80/90/100 benchmark data) - 32 dispatch headers (algorithm implementations) - 60 Thrust examples (correctness verification) - 217 CUB Catch2 tests (regression matrix) - 153 CUB benchmarks (parameter space search) - 18 CUB examples (API verification) - 27 test helpers + benchmark harness - 794 cudax experimental extensions
67 lines
1.9 KiB
Plaintext
67 lines
1.9 KiB
Plaintext
// SPDX-FileCopyrightText: Copyright (c) 2011-2025, NVIDIA CORPORATION. All rights reserved.
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// SPDX-License-Identifier: BSD-3-Clause
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#include <c2h/generators.h>
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// #include <c2h/detail/generators.cuh>
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#include <thrust/device_ptr.h>
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#include <thrust/find.h>
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#include <thrust/scan.h>
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#include <cuda/std/cstdint>
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#include <cuda/std/span>
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#include <c2h/device_policy.h>
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namespace c2h::detail
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{
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template <class T>
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struct greater_equal_op
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{
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T val;
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__device__ bool operator()(T x)
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{
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return x >= val;
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}
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};
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template <typename T>
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std::size_t gen_uniform_offsets(
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seed_t seed, cuda::std::span<T> segment_offsets, T total_elements, T min_segment_size, T max_segment_size)
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{
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gen_values_between(seed, segment_offsets, min_segment_size, max_segment_size);
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*thrust::device_ptr<T>(&segment_offsets[total_elements]) = total_elements + 1;
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thrust::exclusive_scan(device_policy, segment_offsets.begin(), segment_offsets.end(), segment_offsets.begin());
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const auto iter =
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thrust::find_if(device_policy, segment_offsets.begin(), segment_offsets.end(), greater_equal_op<T>{total_elements});
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*thrust::device_ptr<T>(&*iter) = total_elements;
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return iter - segment_offsets.begin() + 1;
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}
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template std::size_t gen_uniform_offsets(
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seed_t seed,
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cuda::std::span<int32_t> segment_offsets,
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int32_t total_elements,
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int32_t min_segment_size,
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int32_t max_segment_size);
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template std::size_t gen_uniform_offsets(
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seed_t seed,
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cuda::std::span<uint32_t> segment_offsets,
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uint32_t total_elements,
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uint32_t min_segment_size,
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uint32_t max_segment_size);
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template std::size_t gen_uniform_offsets(
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seed_t seed,
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cuda::std::span<int64_t> segment_offsets,
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int64_t total_elements,
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int64_t min_segment_size,
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int64_t max_segment_size);
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template std::size_t gen_uniform_offsets(
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seed_t seed,
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cuda::std::span<uint64_t> segment_offsets,
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uint64_t total_elements,
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uint64_t min_segment_size,
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uint64_t max_segment_size);
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} // namespace c2h::detail
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