java.md

Java 
====

Java on ANSELM

  

Java is available on Anselm cluster. Activate java by loading the java
module

    $ module load java

Note that the java module must be loaded on the compute nodes as well,
in order to run java on compute nodes.

Check for java version and path

    $ java -version
    $ which java

With the module loaded, not only the runtime environment (JRE), but also
the development environment (JDK) with the compiler is available.

    $ javac -version
    $ which javac

Java applications may use MPI for interprocess communication, in
conjunction with OpenMPI. Read more
on <http://www.open-mpi.org/faq/?category=java>.
This functionality is currently not supported on Anselm cluster. In case
you require the java interface to MPI, please contact [Anselm
support](https://support.it4i.cz/rt/).