40 lines
892 B
Plaintext
40 lines
892 B
Plaintext
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#include <thrust/device_vector.h>
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#include <thrust/functional.h>
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#include <thrust/generate.h>
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#include <thrust/host_vector.h>
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#include <thrust/random.h>
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#include <thrust/reduce.h>
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#include <iostream>
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int my_rand()
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{
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static thrust::default_random_engine rng;
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static thrust::uniform_int_distribution<int> dist(0, 9999);
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return dist(rng);
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}
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int main()
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{
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// generate random data on the host
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thrust::host_vector<int> h_vec(100);
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thrust::generate(h_vec.begin(), h_vec.end(), my_rand);
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// transfer to device and compute sum
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thrust::device_vector<int> d_vec = h_vec;
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// initial value of the reduction
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int init = 0;
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// binary operation used to reduce values
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cuda::std::plus<int> binary_op;
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// compute sum on the device
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int sum = thrust::reduce(d_vec.begin(), d_vec.end(), init, binary_op);
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// print the sum
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std::cout << "sum is " << sum << '\n';
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return 0;
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}
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