allReduce        2941 ompi/mpi/java/java/Comm.java 	public final void allReduce(Object sendbuf, Object recvbuf,
allReduce        2981 ompi/mpi/java/java/Comm.java 	public final void allReduce(Object buf, int count, Datatype type, Op op)
allReduce        2999 ompi/mpi/java/java/Comm.java 	private native void allReduce(