Since futures are now on by default, I thought I'd try them out (on a
silly microbenchmark). For the Spectral Norm benchmark
(collects/tests/mzscheme/benchmarks/shootout/spectranorm-unsafe.ss)
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
[email protected]
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