Jonathan R. Madsen
f3e7a1664a
* cmake-format + miscellaneous tweaks
* Formatted cmake in examples and tests
* Updated linux-ci.yml artifacts naming
* Updated clang-format
* Fixed submodule branches
[ROCm/rocprofiler-systems commit: 6c93674f92]
50 linhas
934 B
C++
50 linhas
934 B
C++
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#include <atomic>
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#include <cstdio>
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#include <cstdlib>
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#include <thread>
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#include <vector>
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std::atomic<long> total{ 0 };
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long
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fib(long n) __attribute__((noinline));
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void
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run(size_t nitr, long) __attribute__((noinline));
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long
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fib(long n)
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{
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return (n < 2) ? n : fib(n - 1) + fib(n - 2);
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}
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void
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run(size_t nitr, long n)
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{
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long local = 0;
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for(size_t i = 0; i < nitr; ++i)
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local += fib(n);
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total += local;
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}
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int
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main(int argc, char** argv)
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{
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size_t nthread = 16;
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size_t nitr = 50000;
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long nfib = 10;
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if(argc > 1) nfib = atol(argv[1]);
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if(argc > 2) nthread = atol(argv[2]);
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if(argc > 3) nitr = atol(argv[3]);
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std::vector<std::thread> threads{};
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for(size_t i = 0; i < nthread; ++i)
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threads.emplace_back(&run, nitr, nfib);
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for(auto& itr : threads)
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itr.join();
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printf("fibonacci(%li) x %lu = %li\n", nfib, nthread, total.load());
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return 0;
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}
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