Looks like we should “officially” be using ports 6444 and 6445 now. Expect to see these values propagate into an /etc/services file near you.
From http://www.iana.org/assignments/port-numbers:
sge_qmaster 6444/tcp Grid Engine Qmaster Service sge_qmaster 6444/udp Grid Engine Qmaster Service sge_execd 6445/tcp Grid Engine Execution Service sge_execd 6445/udp Grid Engine Execution Service
Discovered when Andreas posted Issue 2099. Thanks Andreas!