Can you provide some more detail? I'm not able to get this to fail (i.e., it seems to be working as expected for me).
For example, what's the contents of your /etc/openmpi/openmpi-default-hostfile -- did you list some hostnames in there? > On May 11, 2018, at 4:43 AM, Konstantinos Konstantinidis > <kostas1...@gmail.com> wrote: > > Hi, > > I have built Open MPI 2.1.2 multiple times on Ubuntu 16.04 and then I add the > line > > orte_default_hostfile=/etc/openmpi/openmpi-default-hostfile > > to the file > > /etc/openmpi/openmpi-mca-params.conf > > and I execute > > sudo chown myUsername /etc/openmpi/openmpi-default-hostfile > > For some reason this change never goes through and each time I run a program > with mpirun only one local process runs. So I have to manually specify my > hostname with the --hostfile argument. > > What can be the cause of this? > > The exact series of commands I use for building is the following > > sudo apt-get update > sudo apt-get upgrade > sudo apt-get install g++ > sudo apt-get install valgrind > sudo apt-get install libopenmpi-dev > sudo apt-get install gfortran > sudo apt-get install make > wget > https://www.open-mpi.org/software/ompi/v2.1/downloads/openmpi-2.1.2.tar.gz > tar -xvf openmpi-* && cd openmpi-* > ./configure --prefix=/usr/local --enable-mpi-cxx --enable-debug > --enable-memchecker --with-valgrind=/usr > sudo make all install > > Then, I add the following lines to the .bashrc file (Is this necessary?) > > export PATH="$PATH:/usr/local/bin" > export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/local/lib" > > for setting the path and library path, respectively and of course reload > .bashrc. > > Is the above way of installing Open MPI correct? I am really wondering since > I have no solid Linux knowledge. > _______________________________________________ > users mailing list > users@lists.open-mpi.org > https://lists.open-mpi.org/mailman/listinfo/users -- Jeff Squyres jsquy...@cisco.com _______________________________________________ users mailing list users@lists.open-mpi.org https://lists.open-mpi.org/mailman/listinfo/users
