OpenMPI

[joeiznogood]

Hi!

I am right now testing cluster-in-the-cloud to set up an Oracle Cloud based cluster. My problem is that I cannot get MPI jobs to work right now across multiple nodes.

In my broad search of the internet, I stumbled upon your documentation for the scalable version of CitC where it says:
"Because OpenMPI uses random port numbers for all its communication, a new policy was added to the virtual cloud network that allows all nodes on that subnetwork to communicate with each other through any port. Moreover, the firewall configuration for the nodes was edited to open up all ports.cCommands added to initialization script"

Could you please give me some details on adding the new policy to the VNC, as well as where to edit the firewall initialisation script?

Thank you!