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
74 lines
1.8 KiB
Plaintext
74 lines
1.8 KiB
Plaintext
//===----------------------------------------------------------------------===//
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//
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// Part of CUDASTF in CUDA C++ Core 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) 2022-2024 NVIDIA CORPORATION & AFFILIATES.
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//
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//===----------------------------------------------------------------------===//
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/**
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* @file
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* @brief Composition of boolean operations applied on logical data
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*/
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#include <cuda/experimental/stf.cuh>
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using namespace cuda::experimental::stf;
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// z = AND(x,y)
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logical_data<slice<int>> AND(context& ctx, logical_data<slice<int>> x, logical_data<slice<int>> y)
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{
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assert(x.shape().size() == y.shape().size());
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auto z = ctx.logical_data(x.shape());
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std::string symbol = "(" + x.get_symbol() + " & " + y.get_symbol() + ")";
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z.set_symbol(symbol);
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ctx.parallel_for(z.shape(), x.read(), y.read(), z.write()).set_symbol("AND")->*
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[] __device__(size_t i, auto dx, auto dy, auto dz) {
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dz(i) = dx(i) & dy(i);
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};
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return z;
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}
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// y = NOT(x)
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logical_data<slice<int>> NOT(context& ctx, logical_data<slice<int>> x)
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{
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auto y = ctx.logical_data(x.shape());
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std::string symbol = "( !" + x.get_symbol() + ")";
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y.set_symbol(symbol);
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ctx.parallel_for(y.shape(), x.read(), y.write()).set_symbol("NOT")->*[] __device__(size_t i, auto dx, auto dy) {
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dy(i) = ~dx(i);
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};
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return y;
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}
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int main()
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{
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const size_t n = 12;
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int X[n], Y[n], Z[n];
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context ctx;
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auto lX = ctx.logical_data(X);
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auto lY = ctx.logical_data(Y);
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auto lZ = ctx.logical_data(Z);
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lX.set_symbol("X");
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lY.set_symbol("Y");
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lZ.set_symbol("Z");
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auto lB = AND(ctx, AND(ctx, lX, lY), AND(ctx, lX, lZ));
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auto lC = AND(ctx, NOT(ctx, AND(ctx, lB, NOT(ctx, lY))), lX);
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ctx.finalize();
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}
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