I previously posted about par_psql, but I recently found another PG parallelism project which can do a few extra things that par_psql can’t:
https://github.com/moat/pmpp
pmpp: Poor Man's Parallel Processing.
Corey Huinker had the idea of using dblink async as a foundation for distributing queries. This allows parallelisation at the query level and across multiple dbs simultaneously.
Nice idea!
Graeme Bell