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package mpi.group;
import mpjdev.*;
import mpjbuf.*;
import mpi.*;
import java.util.Arrays;
public class Group_com {
public static void main(String args[]) throws Exception {
try {
Group_com a = new Group_com(args);
}
catch (Exception e) {
}
}
public Group_com() {
}
public Group_com(String[] args) throws Exception {
MPI.Init(args);
int res = -1;
mpi.Group grp = MPI.COMM_WORLD.Group();
int me = MPI.COMM_WORLD.Rank();
int tasks = MPI.COMM_WORLD.Size();
if (tasks < 8) {
if (me == 0)
System.out.println("group->Group_com: MUST RUN with 8 tasks");
MPI.COMM_WORLD.Barrier();
MPI.Finalize();
return;
}
int[] incl1 = { 4, 0, 5, 6 };
int[] incl2 = { 6, 7, 4 };
int[] incl3 = { 6, 0, 5, 4 };
mpi.Group grp0 = grp.Incl(incl1);
mpi.Group grp1 = grp.Incl(incl1);
mpi.Group grp2 = grp.Incl(incl2);
mpi.Group grp3 = MPI.GROUP_EMPTY;
mpi.Group grp4 = grp.Incl(incl3);
mpi.Group grp5 = null;
// if(me == 0) {
res = mpi.Group.Compare(grp0, grp1);
if (res != MPI.IDENT) {
System.out.println("ERROR(1): grp1{4 0 5 6} and grp0{4 0 5 6} "
+ "are IDENTICAL");
}
res = mpi.Group.Compare(grp1, grp2);
if (res != MPI.UNEQUAL) {
System.out.println("res<" + res + ">");
System.out.println("unequal<" + MPI.UNEQUAL + ">");
System.out.println("ERROR(2): grp1{4 0 5 6} and grp2{6 7 4} "
+ "are UNEQUAL");
}
res = mpi.Group.Compare(grp4, grp1);
if (res != MPI.SIMILAR) {
System.out.println("ERROR(3): grp1{4 0 5 6} and grp4{6 0 5 4} "
+ "are SIMILAR");
}
res = mpi.Group.Compare(grp3, grp1);
if (res != MPI.UNEQUAL) {
System.out.println("ERROR(4): grp1{4 0 5 6} and grp3{ " + "are UNEQUAL");
}
// these are empty groups and generate an exception ..i could have easily
// made them return IDENT ...but i dont think they fit well into the
// definition of IDENT ...
// res = mpi.Group.Compare(grp3,grp3);
// if(res != MPI.IDENT) {
// System.out.println("ERROR(3): grp3{ } and grp3{ } "+
// "are IDENTICAL");
// }
// this test should generate an exception which it does ...
// res = mpi.Group.Compare(grp5, grp5);
MPI.COMM_WORLD.Barrier();
if (me == 0)
System.out.println("Group_com TEST COMPLETED");
// }
MPI.Finalize();
}
}
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