Hi All,
I am using the java backend on X10 2.2.0. I am updating my tutorial examples
to 2.2.0. I got the following error message, and thought I would see if anyone
has seen anything similar:
dhudak@opt0003 846%> x10c DistPi.x10
dhudak@opt0003 847%> export X10_NPLACES=2
dhudak@opt0003 848%> x10 DistPi
With 20000 points, the value of pi is 3.148
dhudak@opt0003 849%> export X10_NPLACES=4
dhudak@opt0003 850%> x10 DistPi
With 40000 points, the value of pi is 3.1467
write errno=32 Fatal Error at place 0: sending STANDARD x10rt_msg_params.type:
Broken pipe
Here is the source code:
import x10.util.Random;
public class DistPi {
public static def main(args: Array[String](1)) {
val samplesPerPlace = 10000;
val localCounts = DistArray.make[Double](Dist.makeUnique(),
0.0);
finish for (p in localCounts.dist.places()) {
async at (p) {
val seed = 13+here.id;
val r = new Random(seed);
for (i in 1..samplesPerPlace) {
val x = r.nextDouble();
val y = r.nextDouble();
val z = x*x+y*y;
if ((x*x + y*y) <= 1.0) {
localCounts(here.id)++;
}
}
}
}
var globalCount:Double = 0.0;
for (p in localCounts.dist.places()) {
globalCount += (at (p) localCounts(here.id));
}
val pi = 4*(globalCount/(samplesPerPlace*here.MAX_PLACES as
Double));
Console.OUT.println("With "+samplesPerPlace*here.MAX_PLACES+"
points, the value of pi is " + pi);
}
}
Thanks,
Dave
---
David E. Hudak, Ph.D. [email protected]
Program Director, HPC Engineering
Ohio Supercomputer Center
http://www.osc.edu
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