reduceScatter    3096 ompi/mpi/java/java/Comm.java 		reduceScatter(handle, sendbuf, sdb, sendoff, recvbuf, rdb, recvoff,
reduceScatter    3126 ompi/mpi/java/java/Comm.java 		reduceScatter(handle, null, false, 0, buf, db, off, counts,