On Wed, 2013-03-27 at 18:12 +0100, Ludovic Courtès wrote: > Hi, > > Nala Ginrut <nalagin...@gmail.com> skribis: > > > scheme@(guile-user)> (par-map 1+ (iota 10000)) > > While executing meta-command: > > ERROR: Throw to key `vm-error' with args `(vm-run "VM: Stack > > overflow" ())'. > > Commit 8a177d3 fixes this. I added a paragraph in the documentation > that explains what happens: delimited continuations to the rescue once > again! ;-) > > Comments welcome. >
oh~I love delimited continuations! But I'm still puzzled with the performance of par-map: --------------------cut------------------- scheme@(guile-user)> ,time (define a (map (lambda (x) (expt x 5)) (iota 10000))) ;; 0.008019s real time, 0.007979s run time. 0.000000s spent in GC. scheme@(guile-user)> ,time (define a (par-map (lambda (x) (expt x 5)) (iota 10000))) ;; 6.596471s real time, 6.579375s run time. 1.513880s spent in GC. --------------------end------------------- So my question is, what's the proper scenario to use par-map? > Ludo’.
