[plt-dev] Nice job with futures!

From: Sam Tobin-Hochstadt (samth at ccs.neu.edu)
Date: Tue Mar 2 12:23:07 EST 2010

Since futures are now on by default, I thought I'd try them out (on a
silly microbenchmark).  For the Spectral Norm benchmark
just using this simple macro:

(define-syntax-rule (for/par b . body)
  (let ([futs (for/list b (future (lambda () . body)))])
    (for ([f (in-list futs)]) (touch f))))

in two places resulted in a 60% speedup on my 4 core machine.  Very impressive.
sam th
samth at ccs.neu.edu

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