allGather        1974 ompi/mpi/java/java/Comm.java 	public final void allGather(Object sendbuf, int sendcount, Datatype sendtype,
allGather        2013 ompi/mpi/java/java/Comm.java 	public final void allGather(Object buf, int count, Datatype type)
allGather        2030 ompi/mpi/java/java/Comm.java 	private native void allGather(