Is there a Scheme implementation that parallelizes?

Question

Is there a R5RS-or-higher Scheme implementation that does parallelization? For example, if I say to do:

(map (lambda (x) 
        (pure-functional-stuff x))
     '(1 3 5 7 11 13))

it will process 1, 3, 5, and 7 simultaneously if the machine can do it? That's supposed to be one of the big advantages of functional programming, but I can't find a maintained, up-to-date Scheme that does it. I'd be fine with one that wouldn't parallelize it unless I assert that the function doesn't have side-effects.

Answer 1

I'm a developer of Schemik and I think that it is the Scheme you are looking for. The project is still developed and maintained. Early this year, I released a version which improves compatibility with R5RS. Unfortunately, Schemik is a research project focused on the process of expression evaluation, thus, its standard library is still relatively small. Is there any particular functionality you miss in Schemik?