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
28 lines
579 B
Plaintext
28 lines
579 B
Plaintext
#include <thrust/device_ptr.h>
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#include <thrust/fill.h>
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#include <cuda.h>
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int main()
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{
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size_t N = 10;
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// obtain raw pointer to device memory
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int* raw_ptr;
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cudaMalloc((void**) &raw_ptr, N * sizeof(int));
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// wrap raw pointer with a device_ptr
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thrust::device_ptr<int> dev_ptr = thrust::device_pointer_cast(raw_ptr);
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// use device_ptr in Thrust algorithms
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thrust::fill(dev_ptr, dev_ptr + static_cast<std::ptrdiff_t>(N), (int) 0);
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// access device memory transparently through device_ptr
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dev_ptr[0] = 1;
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// free memory
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cudaFree(raw_ptr);
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return 0;
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}
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