Hi there,
I have a problem while using (all)reduce. If X10_NPLACES is set to
something greater than 1, the code hangs at team.reduce(...). With
X10_NPLACES = 1, the program terminates. The same code with a Rail[Long]
does execute and terminate as expected (see comments in code). I think
the problem is due to the fact that Boolean does not implement
Arithmetic. Is this behavior intended? If so, is there a way to get this
code snippet to terminate (other than extending Boolean and implementing
Arithmetic)?
Tested with the current SVN-version of X10 (Revision 29416), gcc 4.8.4
and Oracle Java 1.8.0 U45.
Thanks and cheers,
Marco
import x10.util.Team;
public class Main
{
public static def main(val args:Rail[String]) : void
{
val numPlaces:Long = Place.numPlaces();
val reducer:Rail[Boolean] = new Rail[Boolean](numPlaces);
// val reducer:Rail[Long] = new Rail[Long](numPlaces);
val reducerGlobal = new GlobalRef[Rail[Boolean]](reducer);
// val reducerGlobal = new GlobalRef[Rail[Long]](reducer);
val alive:PlaceGroup = Place.places().filterDeadPlaces();
val team:Team = new Team(Place.places());
Console.OUT.println("Starting");
val reduction:() => void
= () =>
{
var rail:Rail[Boolean];
// var rail:Rail[Long];
if (here == reducerGlobal.home)
{
rail = (reducerGlobal() as Rail[Boolean]);
// rail = (reducerGlobal() as Rail[Long]);
}
else
{
rail = new Rail[Boolean](numPlaces);
// rail = new Rail[Long](numPlaces);
}
rail(here.id) = true;
// rail(here.id) = 1;
Console.OUT.println(here + ": " + rail);
team.reduce(reducerGlobal.home
, rail
, 0
, rail
, 0
, numPlaces
, Team.ADD);
};
alive.broadcastFlat(reduction);
Console.OUT.println(reducer);
}
}------------------------------------------------------------------------------
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