I have the privilege to login into a submitting node in a SGE cluster. But I found I couldn't login into any computing node in the same SGE cluster. I have searched in Google and have been confirmed that in the network of computing nodes, it would have ssh right to connect between each two node of this network, then the job would run with the MPI environment. So why couldn't I connect anyone of the computing nodes using ssh terminal? When I tried to connect, the error message is ssh_exchange_identification: Connection closed by remote host. Is it because that the configuration have prevented the common user to do this operation?
Try qrsh -q \*@hostname. Replace the hostname with the actual hostname.