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(