starlisp required that you rephrased your problem to be large vector, with support for turning off logical cpus, very much like programming a modern gpu. if your problem could be recast that way it was pretty nice. however the generalized scatter/gather was so expensive, it had to be used very sparingly. you had to use the grey coded nearest neighbor hypercube network as much as possible.

the really* cool language from Hillis and Steele was cmlisp, but I don't know how far they got, they never released anything.