public static bool test(int n, string v1, string v2) {
var bodies = new NBodySystem();
if (!v1.equals("" + bodies.energy()))
return false;
for (int i = 0; i < n; ++i)
bodies.advance(0.01);
return v2.equals("" + bodies.energy());
}
private void CreateBody(NBodySystem system, GravityObjectInitial init)
{
GameObject obj = Instantiate(system.GravityObjectPrefab);
obj.transform.parent = system.gameObject.transform;
obj.transform.localPosition = init.StartPos;
GravityObject gObj = obj.GetComponent <GravityObject>();
gObj.SetInit(init);
}
public void BenchSetup()
{
bodyPtr = (Body *)Marshal.AllocHGlobal(Marshal.SizeOf <Body>() * 6);
rsPtr = (RS *)Marshal.AllocHGlobal(3 * 1024 * sizeof(double));
nBodyPP = Marshal.AllocHGlobal(Marshal.SizeOf <BodyVector>() * 12);
nBodyPtr = (BodyVector *)((ulong)nBodyPP - ((ulong)nBodyPP + 16) % 16);
rPtr = (R *)Marshal.AllocHGlobal(Marshal.SizeOf <R>() * 1024);
magPtr = (double *)Marshal.AllocHGlobal(sizeof(double) * 1024);
bodySystem = new NBodySystem(bodyPtr);
NBodySystem.Initialize(nBodyPtr);
}
public static void Main (String[] args) {
int n = args.Length > 0 ? Int32.Parse(args[0]) : 10000;
NBodySystem bodies = new NBodySystem();
Console.WriteLine("{0:f9}", bodies.Energy());
for (int i = 0; i < n; i++)
bodies.Advance(0.01);
Console.WriteLine("{0:f9}", bodies.Energy());
}
public void Run(int arg)
{
NBodySystem bodies = new NBodySystem();
Console.WriteLine("{0:f9}", bodies.Energy());
for (int i = 0; i < arg; i++)
{
bodies.Advance(0.01);
}
Console.WriteLine("{0:f9}", bodies.Energy());
}
public static void Bench()
{
int n = 5000000;
foreach (var iteration in Benchmark.Iterations)
{
using (iteration.StartMeasurement())
{
NBodySystem bodies = new NBodySystem();
for (int i = 0; i < n; i++) bodies.Advance(0.01);
}
}
}
public static Tuple <double, double> Main(String[] args)
{
int n = args.Length > 0 ? Int32.Parse(args[0]) : 10000;
NBodySystem bodies = new NBodySystem();
var s = bodies.Energy(); // Console.WriteLine("{0:f9}", bodies.Energy());
for (int i = 0; i < n; i++)
{
bodies.Advance(0.01);
}
return(Tuple.Create(s, bodies.Energy())); // Console.WriteLine("{0:f9}", bodies.Energy());
}
public static void Main(String[] args)
{
int n = args.Length > 0 ? Int32.Parse(args[0]) : 10000;
NBodySystem bodies = new NBodySystem();
Console.WriteLine("{0:f9}", bodies.Energy());
for (int i = 0; i < n; i++)
{
bodies.Advance(0.01);
}
Console.WriteLine("{0:f9}", bodies.Energy());
}
public override void RunOnce()
{
NBodySystem bodies = new NBodySystem();
WriteLine("{0:f9}", bodies.Energy());
for (int i = 0; i < n; i++)
{
bodies.Advance(0.01);
}
WriteLine("{0:f9}", bodies.Energy());
}
public static void Main()
{
Console.WriteLine("NBody");
int n = 500000;
NBodySystem bodies = new NBodySystem();
Console.WriteLine(bodies.Energy());
for (int i = 0; i < n; i++)
{
bodies.Advance(0.01);
}
Console.WriteLine(bodies.Energy());
}
public static void AdvanceStaticIntr1(double dt, R *rPtr, double *magPtr, ref NBodySystem bodySystem, int count = 50000000)
{
Body * items = bodySystem.bodies;
const int N = (BodyCount - 1) * BodyCount / 2;
R * r = rPtr;
double * mag = magPtr;
{
int k = 0;
ref Body iBody = ref items[0];
for (int j = 1; j < 5; ++j, ++k)
{
ref Body jBody = ref items[j];
ref R rf = ref r[k];
public static bool test(int n, string v1, string v2)
{
var bodies = new NBodySystem();
if (!v1.equals("" + bodies.energy()))
{
return(false);
}
for (int i = 0; i < n; ++i)
{
bodies.advance(0.01);
}
return(v2.equals("" + bodies.energy()));
}
public static int Main(String[] args)
{
int n = args.Length > 0 ? Int32.Parse(args[0]) : 10000;
NBodySystem bodies = new NBodySystem();
double initialEnergy = bodies.Energy();
Console.WriteLine("{0:f9}", initialEnergy);
for (int i = 0; i < n; i++) bodies.Advance(0.01);
double finalEnergy = bodies.Energy();
Console.WriteLine("{0:f9}", finalEnergy);
double deltaEnergy = Math.Abs(initialEnergy - finalEnergy);
bool result = deltaEnergy < 1e-4;
Console.WriteLine("Energy {0} conserved", result ? "was" : "was not");
return (result ? 100 : -1);
}
public static void Test()
{
const int n = 10000;
NBodySystem.Initialize();
InitialEnergy = (long)Math.Floor(NBodySystem.Energy() * Scale);
for (int i = 0; i < n; i++)
{
NBodySystem.Advance(0.01);
}
FinalEnergy = (long)Math.Floor(NBodySystem.Energy() * Scale);
}
public static void Bench()
{
int n = 5000000;
foreach (var iteration in Benchmark.Iterations)
{
using (iteration.StartMeasurement())
{
NBodySystem bodies = new NBodySystem();
for (int i = 0; i < n; i++)
{
bodies.Advance(0.01);
}
}
}
}
public static double[] Main(String[] args)
{
int n = args.Length > 0 ? Int32.Parse(args[0]) : 10000;
NBodySystem bodies = new NBodySystem();
var result = new double[2];
result[0] = bodies.Energy();
for (int i = 0; i < n; i++)
{
bodies.Advance(0.01);
}
result[1] = bodies.Energy();
return(result);
}
public unsafe void InitializeVerify()
{
double *bvPtr = stackalloc double[sizeof(BodyVector) / sizeof(double)];
NBodySystem.Initialize((BodyVector *)bvPtr);
Body * bodies = stackalloc Body[5];
NBodySystem bodySystem = new NBodySystem(bodies);
var result = NBodySystem.DumpBodyVector(5);
Assert.NotNull(result);
var expected = NBodySystem.DumpBodies(bodies, 5);
Assert.NotNull(expected);
Assert.Equal(expected, result);
}
public static int Main(String[] args)
{
int n = args.Length > 0 ? Int32.Parse(args[0]) : 10000;
NBodySystem bodies = new NBodySystem();
double initialEnergy = bodies.Energy();
Console.WriteLine("{0:f9}", initialEnergy);
for (int i = 0; i < n; i++)
{
bodies.Advance(0.01);
}
double finalEnergy = bodies.Energy();
Console.WriteLine("{0:f9}", finalEnergy);
double deltaEnergy = Math.Abs(initialEnergy - finalEnergy);
bool result = deltaEnergy < 1e-4;
Console.WriteLine("Energy {0} conserved", result ? "was" : "was not");
return(result ? 100 : -1);
}
public static void Run(String[] args)
{
int n = args.Length > 0 ? Int32.Parse(args[0]) : 50_000; //50_000_000;
Console.WriteLine("Calculating N-Body for {0} iterations", n);
NBodySystem bodies = new NBodySystem();
Console.WriteLine("{0:f9}", bodies.Energy());
var dtStart = DateTime.UtcNow;
for (int i = 0; i < n; i++)
{
bodies.Advance(0.01);
}
var elapsed = DateTime.UtcNow - dtStart;
Console.WriteLine("{0:f9}", bodies.Energy());
Console.WriteLine("Elapsed {0:f3} sec", elapsed.TotalSeconds);
}
public unsafe void AdvanceByOne()
{
double *bvPtr = stackalloc double[sizeof(BodyVector) / sizeof(double)];
NBodySystem.Initialize((BodyVector *)bvPtr);
Body * bodies = stackalloc Body[5];
NBodySystem bodySystem = new NBodySystem(bodies);
// Other data structures
RS * rsaPtr = stackalloc RS[1];
R * rPtr = stackalloc R[1024];
double *magPtr = stackalloc double[1024];
double *mag2Ptr = stackalloc double[1024];
NBodySystem.AdvanceStaticIntrSoa(0.01, rsaPtr, magPtr);
var result = NBodySystem.DumpBodyVector(5);
NBodySystem.AdvanceStaticIntr2(0.01, rPtr, mag2Ptr, ref bodySystem);
var expected = NBodySystem.DumpBodies(bodies, 5);
Assert.Equal(expected, result);
}
public float DistanceScale = 1; //How many metres 1 unit represents
private void Awake()
{
Instance = this;
}
public static void Main(string[] args)
{
var target = "C#";
if (args.Length > 0)
{
target = args[0];
}
Console.WriteLine($"============ {target} ============");
{
Console.WriteLine("##### N-Body #####");
NBodySystem dummy = new NBodySystem();
dummy.Advance(0.01);
Func <Int32, TimeSpan> test = (ti) =>
{
NBodySystem bodies = new NBodySystem();
var e = new Elapsed("11");
for (int i = 0; i < 50000000; i++)
{
bodies.Advance(0.01);
}
var d = e.Done();
Console.WriteLine($"Try #{ti} : {d}, {bodies.Energy()}");
return(d);
};
var times0 = new List <TimeSpan>(10);
for (var i = 0; i < 10; i++)
{
times0.Add(test(i));
}
var times = times0.Where(x => x != times0.Min() && x != times0.Max()).ToList();
var average = new TimeSpan((long)times.Select(ts => ts.Ticks).Average());
//Console.WriteLine($"{target} [N-Body] : {average}\n");
using (StreamWriter sw = File.AppendText("averages.txt"))
{
sw.WriteLine($"{target} [N-Body] : {average}");
}
}
{
Console.WriteLine("##### Spectral-Norm #####");
SpectralNorm.RunGame(0);
Func <Int32, TimeSpan> test = (ti) =>
{
var e = new Elapsed("11");
var r = SpectralNorm.RunGame(5500);
var d = e.Done();
//Console.WriteLine("{0:f9}", r);
Console.WriteLine($"Try #{ti} : {d}, {r}");
return(d);
};
var times0 = new List <TimeSpan>(10);
for (var i = 0; i < 10; i++)
{
times0.Add(test(i));
}
var times = times0.Where(x => x != times0.Min() && x != times0.Max()).ToList();
var average = new TimeSpan((long)times.Select(ts => ts.Ticks).Average());
//Console.WriteLine($"{target} [Spectral-Norm] : {average}");
using (StreamWriter sw = File.AppendText("averages.txt"))
{
sw.WriteLine($"{target} [S-Norm] : {average}");
}
}
{
Console.WriteLine("##### Quicksort #####");
Quicksort.DoSort(new Int32[3] {
0, 1, 2
}, 0, 2);
Func <Int32, TimeSpan> test = (ti) =>
{
var n = 50000000;
var r = new Random();
var array = new Int32[n];
for (var i = 0; i < n; i++)
{
array[i] = r.Next(0, n);
}
var e = new Elapsed("");
Quicksort.DoSort(array, 0, n - 1);
var d = e.Done();
Console.WriteLine($"Try #{ti} : {d}, {array[1000]}");
return(d);
};
var times0 = new List <TimeSpan>(10);
for (var i = 0; i < 10; i++)
{
times0.Add(test(i));
}
var times = times0.Where(x => x != times0.Min() && x != times0.Max()).ToList();
var average = new TimeSpan((long)times.Select(ts => ts.Ticks).Average());
//Console.WriteLine($"{target} [Spectral-Norm] : {average}");
using (StreamWriter sw = File.AppendText("averages.txt"))
{
sw.WriteLine($"{target} [Q-Sort] : {average}");
}
}
}
public unsafe void Initialize()
{
double *bvPtr = stackalloc double[sizeof(BodyVector) / sizeof(double)];
NBodySystem.Initialize((BodyVector *)bvPtr);
}
public void AdvanceStaticIntr1()
{
NBodySystem.AdvanceStaticIntr1(0.01, rPtr, magPtr, ref bodySystem);
}
