Field Detail

• EMPTY

  public static final int EMPTY

  See Also:

  Constant Field Values

• code

  public int code

• mpjdevGroup

  public mpjdev.Group mpjdevGroup

Constructor Detail

• Group

  public Group(mpjdev.Group mpjdevGroup)

Method Detail

• free

  public void free()

  This method frees this group object. Though automatic garbage collector will take care of it, but we mark this object for gc, by declaring it null implement at the end.

• Size

  public int Size()
           throws MPIException

  Size of group.

  returns:

  number of processors in the group

  Java binding of the MPI operation MPI_GROUP_SIZE.

  Throws:

  MPIException

• Rank

  public int Rank()
           throws MPIException

  Rank of this process in group.

  returns:

  rank of the calling process in the group

  Java binding of the MPI operation MPI_GROUP_RANK. Result value is MPI.UNDEFINED if this process is not a member of the group.

  Throws:

  MPIException

• Translate_ranks

  public static int[] Translate_ranks(Group group1,
                      int[] ranks1,
                      Group group2)
                               throws MPIException

  Translate ranks within one group to ranks within another.

  group1	a group
  ranks1	array of valid ranks in group1
  group2	another group
  returns:	array of corresponding ranks in group2

  Java binding of the MPI operation MPI_GROUP_TRANSLATE_RANKS.

  Result elements are MPI.UNDEFINED where no correspondence exists.

  Throws:

  MPIException

• Compare

  public static int Compare(Group group1,
            Group group2)
                     throws MPIException

  Compare two groups.

  group1	first group
  group2	second group
  returns:	result

  Java binding of the MPI operation MPI_GROUP_COMPARE.

  MPI.IDENT results if the group members and group order are exactly the same in both groups. MPI.SIMILAR results if the group members are the same but the order is different. MPI.UNEQUAL results otherwise.

  Throws:

  MPIException

• Union

  public static Group Union(Group group1,
            Group group2)
                     throws MPIException

  Set union of two groups.

  group1	first group
  group2	second group
  returns:	union group

  Java binding of the MPI operation MPI_GROUP_UNION.

  Throws:

  MPIException

• Intersection

  public static Group Intersection(Group group1,
                   Group group2)
                            throws MPIException

  Set intersection of two groups.

  group1	first group
  group2	second group
  returns:	intersection group

  Java binding of the MPI operation MPI_GROUP_INTERSECTION.

  Throws:

  MPIException

• Difference

  public static Group Difference(Group group1,
                 Group group2)
                          throws MPIException

  Result contains all elements of the first group that are not in the second group.

  group1	first group
  group2	second group
  returns:	difference group

  Java binding of the MPI operation MPI_GROUP_DIFFERENCE.

  Throws:

  MPIException

• Incl

  public Group Incl(int[] ranks)
             throws MPIException

  Create a subset group including specified processes.

  ranks	ranks from this group to appear in new group
  returns:	new group

  Java binding of the MPI operation MPI_GROUP_INCL.

  Throws:

  MPIException

• Excl

  public Group Excl(int[] ranks)
             throws MPIException

  Create a subset group excluding specified processes.

  ranks	ranks from this group not to appear in new group
  returns:	new group

  Java binding of the MPI operation MPI_GROUP_EXCL.

  Throws:

  MPIException

• Range_incl

  public Group Range_incl(int[][] ranges)
                   throws MPIException

  Create a subset group including processes specified by strided intervals of ranks.

  ranges	array of integer triplets
  returns:	new group

  Java binding of the MPI operation MPI_GROUP_RANGE_INCL.

  The triplets are of the form (first rank, last rank, stride) indicating ranks in this group to be included in the new group. The size of the first dimension of ranges is the number of triplets. The size of the second dimension is 3.

  Throws:

  MPIException

• Range_excl

  public Group Range_excl(int[][] ranges)
                   throws MPIException

  Create a subset group excluding processes specified by strided intervals of ranks.

  ranges	array of integer triplets
  returns:	new group

  Java binding of the MPI operation MPI_GROUP_RANGE_EXCL.

  Triplet array is defined as for Range_incl, the ranges indicating ranks in this group to be excluded from the new group.

  Throws:

  MPIException

• finalize

  public void finalize()
                throws MPIException

  Destructor.

  Java binding of the MPI operation MPI_GROUP_FREE.

  Overrides:

  finalize in class java.lang.Object

  Throws:

  MPIException