If you have several UNIX platforms with Perl installed and SSH access, then you can use GRID::Machine to have Perl interpreters running in those nodes and make them collaborate. The best thing being that you don't have to ask administrators to install any additional software.

I have written a tutorial (GRID::Machine::perlparintro) that through a simple example introduces how to use Perl via GRID::Machine to exploit the computing power of idle workstations.

Hope it Helps

Casiano