From 2f19e94b0ce78d6ccc9eedbf04b8a3460fd05565 Mon Sep 17 00:00:00 2001 From: Sebastiano Tronto Date: Mon, 29 Apr 2024 21:59:51 +0200 Subject: Sort benchmarks --- sort-benchmark/integers/sort_parallel.cpp | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 sort-benchmark/integers/sort_parallel.cpp (limited to 'sort-benchmark/integers/sort_parallel.cpp') diff --git a/sort-benchmark/integers/sort_parallel.cpp b/sort-benchmark/integers/sort_parallel.cpp new file mode 100644 index 0000000..5de4158 --- /dev/null +++ b/sort-benchmark/integers/sort_parallel.cpp @@ -0,0 +1,28 @@ +/* Requires Thread Building Blocks (libtbb-dev on Debian) */ + +#include +#include +#include +#include +#include + +int a[ARRAYSIZE]; + +int main(void) { + srand(time(NULL)); + for (auto &x : a) x = rand() % 1000000000; + + struct timespec begin; + clock_gettime(CLOCK_MONOTONIC, &begin); + + std::sort(std::execution::par, a, a+ARRAYSIZE, + [](const int &x, const int &y) { return x < y; }); + + struct timespec end; + clock_gettime(CLOCK_MONOTONIC, &end); + double time = end.tv_sec - begin.tv_sec + + (end.tv_nsec - begin.tv_nsec) / 1000000000.0; + + std::cout << "(" << a[ARRAYSIZE/2] << ") C++ time for " << ARRAYSIZE + << " numbers (parallel): " << time << "s\n"; +} -- cgit v1.3