I am having some problems getting SGE working on a small linux cluster. I get the following error: unable to contact qmaster via "master" commd - commlib error: "READ ERROR" when trying to add an admin host, using the "install_qmaster" script (the master node, named "master" internally, but "rioja" externally). I am not sure if this is a naming problem, or somethign to do with the way the ports are configured. I have all the nodes with an /etc/services file that reserves port 555 for the sge_commd service. Any ideas about what could be responsible for this, or what files I could edit to get this working? I am already editing the default/common/act_qmaster file to get the qmaster and scheduler daemons to start. Any help appreciated... Cheers, JP