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
95 lines
2.7 KiB
C
95 lines
2.7 KiB
C
//===----------------------------------------------------------------------===//
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//
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// Part of CUDA Experimental in CUDA Core Compute Libraries,
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// under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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// SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION.
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//
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//===----------------------------------------------------------------------===//
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#pragma once
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// NOLINTBEGIN(modernize-use-using)
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#ifndef CCCL_C_EXPERIMENTAL
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# error "C exposure is experimental and subject to change. Define CCCL_C_EXPERIMENTAL to acknowledge this notice."
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#endif // !CCCL_C_EXPERIMENTAL
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#include <cuda.h>
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#include <stdint.h>
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#include <cccl/c/extern_c.h>
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#include <cccl/c/types.h>
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CCCL_C_EXTERN_C_BEGIN
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typedef struct cccl_device_reduce_build_result_t
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{
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int cc;
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void* payload;
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size_t payload_size;
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void* jit_compiler; // hostjit::JITCompiler*
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void* reduce_fn; // int(*)(void*, size_t*, void*, void*, unsigned long long, void*, void*, void*) — trailing void* is
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// the CUstream
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uint64_t accumulator_size;
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cccl_determinism_t determinism;
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} cccl_device_reduce_build_result_t;
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// TODO return a union of nvtx/cuda/nvrtc errors or a string?
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CCCL_C_API CUresult cccl_device_reduce_build(
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cccl_device_reduce_build_result_t* build,
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cccl_iterator_t d_in,
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cccl_iterator_t d_out,
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cccl_op_t op,
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cccl_value_t init,
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cccl_determinism_t determinism,
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int cc_major,
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int cc_minor,
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const char* cub_path,
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const char* thrust_path,
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const char* libcudacxx_path,
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const char* ctk_path);
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// Extended version with build configuration
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CCCL_C_API CUresult cccl_device_reduce_build_ex(
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cccl_device_reduce_build_result_t* build,
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cccl_iterator_t d_in,
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cccl_iterator_t d_out,
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cccl_op_t op,
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cccl_value_t init,
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cccl_determinism_t determinism,
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int cc_major,
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int cc_minor,
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const char* cub_path,
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const char* thrust_path,
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const char* libcudacxx_path,
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const char* ctk_path,
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cccl_build_config* config);
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CCCL_C_API CUresult cccl_device_reduce(
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cccl_device_reduce_build_result_t build,
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void* d_temp_storage,
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size_t* temp_storage_bytes,
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cccl_iterator_t d_in,
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cccl_iterator_t d_out,
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uint64_t num_items,
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cccl_op_t op,
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cccl_value_t init,
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CUstream stream);
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CCCL_C_API CUresult cccl_device_reduce_nondeterministic(
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cccl_device_reduce_build_result_t build,
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void* d_temp_storage,
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size_t* temp_storage_bytes,
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cccl_iterator_t d_in,
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cccl_iterator_t d_out,
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uint64_t num_items,
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cccl_op_t op,
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cccl_value_t init,
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CUstream stream);
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CCCL_C_API CUresult cccl_device_reduce_cleanup(cccl_device_reduce_build_result_t* bld_ptr);
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CCCL_C_EXTERN_C_END
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// NOLINTEND(modernize-use-using)
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