Recently, I tried to use Java bindings in Open MPI released this February. As far as mentioned in the Java FAQ ( http://www.open-mpi.org/faq/?category=java ), the Java binding implementation doesn't cause any performance degradation because of just wrapping native Open MPI with mpiJava-based APIs. I believe this means no Java code is required to run on all processing nodes (workers) but it has only to run on a master node. Is this understanding correct?
If so, my question is if I need NOT to install JDK to the all nodes. In other words is it possible to have a machine used as a worker without JDK installed?
Thanks a lot for any comment in advance.