This is a google-bait post, designed to perhaps help someone searching on this particular grid engine error message:
poll: protocol failure in circuit setup
Reported by Paul Uiterlinden, you can read the full post here. In short, a system running SGE 6.0u8 with a Solaris 10 qmaster was having some problems with a small percentage of submit hosts running Fedora Core 3 Linux. The problem was traced to the use of LD_ASSUME_KERNEL in /etc/profile on the affected machines.