Commit 3445fe8e authored by Ulysse Beaugnon's avatar Ulysse Beaugnon

The simulator now use the <future> library of the C++ 11

It allow the simulator to run multiple simulation at once (but not yet multiple runs)
and to let the system decide how it should scale on each computer
parent cc812286
// To compile with -std=c++0x
// To compile : g++ -std=c++0x results.cpp graph.cpp main.cpp -lpthread
#include "main.h"
#include <fstream>
#include <future>
#include <sstream>
int n = 1000; // the number of peer
int k = 10; // each peer try to make k connections with the others
const char* outName = "out.csv";
......@@ -13,9 +13,6 @@ Results Simulate(mt19937 rng, int n, int k, int maxPeer, int maxDistanceFrom, i
for(int r=0; r<runs; r++)
{
cout << "\r \rn = " << n << ", k = " << k << ", run = " << r;
cout.flush();
Graph graph(n, k, maxPeer, rng);
results.UpdateArity(graph);
......@@ -27,7 +24,6 @@ Results Simulate(mt19937 rng, int n, int k, int maxPeer, int maxDistanceFrom, i
results.UpdateDistance(distance, graph.size);
}
}
cout << "\r \r";
results.Finalise();
return results;
......@@ -40,15 +36,34 @@ int main(int argc, char** argv)
fstream output(outName, fstream::out);
output << "n,k,maxPeer,avgDistance,disconnected,maxDistance,maxArityDistrib" << endl;
vector<future<string>> outputStrings;
for(int n=200; n<=20000; n*=2)
for(int k=5; k<=50; k+=5)
{
Results results = Simulate(rng, n, k, 3*k, 10000, 50);
output << n << "," << k << "," << 3*k << "," << results.avgDistance << ","
<< results.disconnected << "," << results.maxDistance << ","
<< results.arityDistrib[3*k] << endl;
outputStrings.push_back(async(launch::async, [rng, n, k]()
{
Results results = Simulate(rng, n, k, 3*k, 10000, 50);
ostringstream out;
out << n << "," << k << "," << 3*k << "," << results.avgDistance << ","
<< results.disconnected << "," << results.maxDistance << ","
<< results.arityDistrib[3*k];
return out.str();
}));
}
cout << "Launching finished" << endl;
int nTask = outputStrings.size();
for(int i=0; i<nTask; i++)
{
output << outputStrings[i].get() << endl;
cout << "\r" << i << "/" << nTask;
cout.flush();
}
cout << endl;
output.close();
return 0;
}
......
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