//protected Thread master = null;
private void setup_mpi()
{
int nc, color;
string[] args = System.Environment.GetCommandLineArgs();
mpi = new MPI.Environment(ref args);
worldcomm = Communicator.world;
total_nodes = worldcomm.Size;
node = worldcomm.Rank;
//---------------------------------------------------------------------
// compute square root; add small number to allow for roundoff
//---------------------------------------------------------------------
nc = Convert.ToInt32(Math.Sqrt(total_nodes) + 0.00001d);
maxcells = Convert.ToInt32(Math.Sqrt(total_nodes));
//---------------------------------------------------------------------
// We handle a non-square number of nodes by making the excess nodes
// inactive. However, we can never handle more cells than were compiled
// in.
//---------------------------------------------------------------------
if (nc > maxcells)
{
nc = maxcells;
}
if (node >= nc * nc)
{
active = false;
color = 1;
}
else
{
active = true;
color = 0;
}
comm_setup = (Intracommunicator)worldcomm.Split(color, node);
if (!active)
{
return;
}
no_nodes = comm_setup.Size;
comm_solve = (Intracommunicator)comm_setup.Clone();
comm_rhs = (Intracommunicator)comm_setup.Clone();
//---------------------------------------------------------------------
// let node 0 be the root for the group (there is only one)
//---------------------------------------------------------------------
root = 0;
}
public override int go()
{
double[] src = new double[d1 * d2 * d3 * 2];
double[] dst = new double[d1 * d2 * d3 * 2];
worldcomm = this.WorldComm;
commslice2 = (Intracommunicator)worldcomm.Split(me2, me1);
setVetor(xin, src);
commslice2.AlltoallFlattened <double>(src, d1 * d2 * d3 * 2 / np1, ref dst);
setVetor(dst, xout);
return(0);
}
