private static void Run(Communicator communicator, DSM dsm)
{
while (true)
{
Console.WriteLine("\nRank " + communicator.Rank + " waiting..\n");
var messages = new Message[1];
communicator.Receive(Communicator.anySource, 0, ref messages);
var message = messages[0];
switch (message.Tag)
{
case Tag.Close:
Console.WriteLine("Rank " + communicator.Rank + " stopped listening...");
return;
case Tag.Subscribe:
{
var data = message.Payload;
Console.WriteLine("Subscribe message received");
Console.WriteLine("Rank " + communicator.Rank + " received: rank " + data.Value + " subscribes to " + data.Var);
dsm.SyncSubscription(data.Var, data.Value);
break;
}
case Tag.Update:
{
var data = message.Payload;
Console.WriteLine("Update message received");
Console.WriteLine("Rank " + communicator.Rank + " received:" + data.Var + "->" + data.Value);
dsm.SetVariable(data.Var, data.Value);
break;
}
case Tag.Error:
{
var data = message.Payload;
Console.WriteLine("ErrorMessage message received");
Console.WriteLine("Rank " + communicator.Rank + " received: Process " + data.Value + " tried to update unavailable variable " + data.Var);
break;
}
default:
throw new ArgumentOutOfRangeException();
}
PrintAll(communicator, dsm);
}
}
private static void PrintAll(Communicator communicator, DSM dsm)
{
var sb = new StringBuilder();
sb.Append("Write all\n");
sb.Append($"Rank {communicator.Rank} -> a = {dsm.A}, b = {dsm.B}, c = {dsm.C}\n");
sb.Append("Subscribers: \n");
foreach (var var in dsm.Subscribers.Keys)
{
sb.Append(var).Append("->")
.Append(string.Join(',', dsm.Subscribers.GetValueOrDefault(var)))
.Append('\n');
}
Console.WriteLine(sb);
}
public static void Main(string[] args)
{
MPI.Environment.Run(ref args, communicator =>
{
var dsm = new DSM(communicator);
var thread = new Thread(() => Run(communicator, dsm));
thread.Start();
switch (communicator.Rank)
{
case 0:
{
dsm.SubscribeTo("a");
dsm.SubscribeTo("b");
dsm.SubscribeTo("c");
dsm.CheckAndReplace("a", 0, 111);
dsm.CheckAndReplace("b", 1, 222);
dsm.CheckAndReplace("c", 444, 555);
dsm.Close();
break;
}
case 1:
{
dsm.SubscribeTo("a");
dsm.SubscribeTo("b");
break;
}
case 2:
{
dsm.SubscribeTo("b");
dsm.SubscribeTo("c");
dsm.CheckAndReplace("c", 2, 444);
break;
}
}
thread.Join();
});
}
