package mpi.comm;/**************************************************************************** MESSAGE PASSING INTERFACE TEST CASE SUITE Copyright IBM Corp. 1995 IBM Corp. hereby grants a non-exclusive license to use, copy, modify, and distribute this software for any purpose and without fee provided that the above copyright notice and the following paragraphs appear in all copies. IBM Corp. makes no representation that the test cases comprising this suite are correct or are an accurate representation of any standard. In no event shall IBM be liable to any party for direct, indirect, special incidental, or consequential damage arising out of the use of this software even if IBM Corp. has been advised of the possibility of such damage. IBM CORP. SPECIFICALLY DISCLAIMS ANY WARRANTIES INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS AND IBM CORP. HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.**************************************************************************** These test cases reflect an interpretation of the MPI Standard.  They are are, in most cases, unit tests of specific MPI behaviors.  If a user of any test case from this set believes that the MPI Standard requires behavior different than that implied by the test case we would appreciate feedback. Comments may be sent to:    Richard Treumann    treumann@kgn.ibm.com**************************************************************************** MPI-Java version :    Sung-Hoon Ko(shko@npac.syr.edu)    Northeast Parallel Architectures Center at Syracuse University    03/22/98****************************************************************************/import mpi.*;public class intercomm {  static int newsize,me,size,color,key,             local_lead,remote_lead,newme,othersum;  static int mebuf[] = new int[1];  static int sum[]  = new int[1];  static int newsum[] = new int[1];  static boolean flag;  static Intracomm comm,mergecomm;  static Intercomm intercomm;   static Status status;  static Group newgid;  static void inter_tests() throws MPIException {    flag = intercomm.Test_inter();    if(flag != true)      System.out.println	("ERROR in MPI_Comm_test_inter: flag = "+flag+", should be 1");        newsize = intercomm.Remote_size();        if(newsize != size/2)      System.out.println	("ERROR in MPI_Comm_remote_size: size = "+newsize+	 ", should be "+(size/2));        newgid = intercomm.Remote_group();    newsize = newgid.Size();    if(newsize != size/2)      System.out.println	("ERROR in MPI_Comm_remote_group: size = "+newsize+	 ", should be "+(size/2));     newsum[0] = sum[0];    status = intercomm.Sendrecv_replace(newsum,0,1,MPI.INT,newme,7,newme,7);    othersum = size/2*(size/2-1);    if(me%2 == 0)  othersum += size/2;    if(othersum != newsum[0])      System.out.println	("ERROR in Intercomm_create, sum = "+othersum+", should be "+newsum);    boolean high = (color==1) ? true : false;    Intracomm mergecomm = intercomm.Merge(high);    mebuf[0] = me;    mergecomm.Allreduce(mebuf,0,newsum,0,1,MPI.INT,MPI.SUM);    if(newsum[0] != size*(size-1)/2)      System.out.println	("ERROR in MPI_Intercomm_merge: sum = "+newsum[0]+	 ", should be "+size*(size-1)/2);  }   ////////////////////////////////////////////////////////////  static public void main(String[] args) throws MPIException {  }  public intercomm() {  }  public intercomm(String[] args) throws Exception {    Intracomm comm1, comm2;    MPI.Init(args);        me = MPI.COMM_WORLD.Rank();    size = MPI.COMM_WORLD.Size();      if(size%2==1) {       if(me == 0)        System.out.println("comm->intercomm: MUST RUN WITH EVEN NUMBER"+	                   "OF TASKS");      MPI.COMM_WORLD.Barrier();      MPI.Finalize();      return;     }    key = me;    color = me%2;    comm = MPI.COMM_WORLD.Split(color,key);    comm1 = comm;    flag = comm.Test_inter();    if(flag != false)      System.out.println	("ERROR in MPI_Comm_test_inter: flag = "+flag+", should be false");    newme = comm.Rank();    mebuf[0] = me;    comm.Allreduce(mebuf,0,sum,0,1,MPI.INT,MPI.SUM);    local_lead = 0;//  local_lead = (color==0) ? 0 : 1;    remote_lead = (color==1) ? 0 : 1;    intercomm = MPI.COMM_WORLD.Create_intercomm(comm,local_lead,remote_lead,5);    inter_tests(); /*       Intercomm incomm = (Intercomm) intercomm.clone();    intercomm = incomm;    inter_tests();    MPI.COMM_WORLD.Barrier();    */    if(me == 0)  System.out.println("Intercomm TEST COMPLETE");    MPI.Finalize();  }}