You can install the grid engine software either as the root user or as an unprivileged user (for example, your own user account). However, if you install the software logged in as an unprivileged user, the installation allows only that user to run grid engine system jobs. Access is denied to all other accounts. Installing the software logged in as the root account resolves this restriction. However, root permission is required for the complete installation procedure. Also, if you install as an unprivileged user, you are not allowed to use the qrsh, qtcsh, qmake commands, nor can you run tightly integrated parallel jobs.
If you decide to install grid engine as an unprivileged user, you must set the sge_commd port number higher than or equal to 1024.