Hi, I am trying to use Jumbo frames but mpirun will not start the job. I am using OpenMPI v1.1 shipped with the latest Rocks (4.2). Ifconfig is reporting that all the NIC on the cluster are using an MTU of 9000 and the switch (HP Procurve) should be able to use Jumbo frames.
Is there any special flag I need to pass to mpirun or a configuration file I need to edit? Thanks Massimiliano
