Урок 9 Вглубь процессора

kutuzzzov

Nov 2nd, 2022

1,345

Never

Add comment

Not a member of Pastebin yet? Sign Up, it unlocks many cool features!

C++ 2.35 KB | None | 0 0

raw download clone embed print report

// main
#include "log_duration.h"
#include <iostream>
#include <numeric>
#include <random>
#include <string>
#include <vector>
using namespace std;
vector<float> ComputeAvgTemp(const vector<vector<float>>& vs) {
// место для вашего решения
if (vs.empty()) return {};
int n = vs[0].size();
int m = vs.size();
vector<float> result(n);
vector<float> sum(n);
vector<float> size(n);
for (int i = 0; i < n; ++i) {
sum = {};
size = {};
for (int j = 0; j < m; ++j) {
sum[i] += (vs[j][i] > 0 ? vs[j][i] : 0);
size[i] += (vs[j][i] > 0 ? 1 : 0);
}
result[i] += (size[i] > 0 ? sum[i] / size[i] : 0);
}
return result;
}
vector<float> GetRandomVector(int size) {
static mt19937 engine;
uniform_real_distribution<float> d(-100, 100);
vector<float> res(size);
for (int i = 0; i < size; ++i) {
res[i] = d(engine);
}
return res;
}
int main() {
vector<vector<float>> data;
data.reserve(5000);
for (int i = 0; i < 5000; ++i) {
data.push_back(GetRandomVector(5000));
}
vector<float> avg;
{
LOG_DURATION("ComputeAvgTemp"s);
avg = ComputeAvgTemp(data);
}
cout << "Total mean: "s << accumulate(avg.begin(), avg.end(), 0.f) / avg.size() << endl;
}
// log_duration
#pragma once
#include <chrono>
#include <iostream>
#define PROFILE_CONCAT_INTERNAL(X, Y) X##Y
#define PROFILE_CONCAT(X, Y) PROFILE_CONCAT_INTERNAL(X, Y)
#define UNIQUE_VAR_NAME_PROFILE PROFILE_CONCAT(profileGuard, __LINE__)
#define LOG_DURATION(x) LogDuration UNIQUE_VAR_NAME_PROFILE(x)
class LogDuration {
public:
// заменим имя типа std::chrono::steady_clock
// с помощью using для удобства
using Clock = std::chrono::steady_clock;
LogDuration(const std::string& id) : id_(id) {
}
~LogDuration() {
using namespace std::chrono;
using namespace std::literals;
const auto end_time = Clock::now();
const auto dur = end_time - start_time_;
std::cerr << id_ << ": "s << duration_cast<milliseconds>(dur).count() << " ms"s << std::endl;
}
private:
const std::string id_;
const Clock::time_point start_time_ = Clock::now();
};

Add Comment

Please, Sign In to add comment