Benson, I think OpenJDK 9 is enough. I tested Open MPI Java bindings with OpenJDK 8, 9, 10, and 11 several months ago.
Compiling your MPI Java program requires mpi.jar, which should have been installed in $OMPI_INSTALL_DIR/lib. Probably your compilation error message indicates mpi.jar is not found. When you use the mpijavac command of Open MPI, its classpath is automatically passed to the javac command. How did you build ping-pong-mpi-tcp? With Maven? If so, Maven must know the path or use mpijavac. I don't know about Maven. Takahiro Kawashima, Fujitsu > Thanks. The code is here: > > https://github.com/mboysan/ping-pong-mpi-tcp > > OpenMPI is built using: > > ./configure --prefix=/PATH_TO_HOME_DIRECTORY/openmpi-4.0.1-install \ > --enable-mpi-java > > The code builds on a number of other machines. Are there any minimum > java build requirements for OpenMPI with Java? At present using a > machine with Ubuntu 16.04, GCC 5.4.0 and OpenJDK 9 > > On 4/9/19 4:10 PM, Jeff Squyres (jsquyres) via users wrote: > > Can you provide a small, standalone example + recipe to show the problem? > > > > > > > >> On Apr 8, 2019, at 6:45 AM, Benson Muite <benson_mu...@emailplus.org> > >> wrote: > >> > >> Hi > >> > >> Am trying to build an MPI Java program using OpenMPI 4.0.1: > >> > >> I get the following error: > >> > >> Compilation failure > >> /MY_DIRECTORY/ping-pong-mpi-tcp/src/main/java/SocketMainMultiJVM.java:[2,10] > >> error: cannot access MPIException > >> > >> Any suggestions on what I am doing incorrectly? > >> > >> Thanks, > >> > >> Benson _______________________________________________ users mailing list users@lists.open-mpi.org https://lists.open-mpi.org/mailman/listinfo/users
