Gerd Stolpmann <i...@gerd-stolpmann.de> writes: > Am Dienstag, den 23.11.2010, 17:53 +0000 schrieb Isaac Gouy: >> Christophe TROESTLER <Christophe.Troestler+ocaml <at> umh.ac.be> writes: >> >> > >> > On Tue, 23 Nov 2010 02:03:48 +0000, Isaac Gouy wrote: >> > > >> > > > C version : 12.11 secs >> > > > OCaml version : 47.22 secs >> > > > OCaml version with GC parameters tuned ("interesting alternative" >> > > section) : 12.67 secs >> > > >> > > And of course you know because that GC tuned OCaml program is shown >> > > on the >> > > benchmarks game website >> > > http://shootout.alioth.debian.org/u32/program.php?test=binarytrees& >> > > lang=ocaml&id=1 >> > >> > Since you are here, please explain why C can use memory pools and vec >> > tor instructions but tuning the GC of OCaml â although it is part of >> > the standard library â is considered an âalternativeâ. >> >> >> You seem to be suggesting that "tuning the GC" is considered "alternative" >> only >> for OCaml programs. >> >> You seem to be suggesting that "tuning the GC" is considered "alternative" >> for >> every task. >> >> Neither is true. >> >> You seem to be suggesting some kind of equivalence between vector >> instructions >> and "tuning the GC". >> You haven't said why they should be considered equivalent. >> >> Nor have you said why you think C should not be allowed to use memory pools. > > Quite easy: because you are comparing results that cannot be compared. > The reader of this benchmark (binary trees) might have the impression > that C is generally that fast - however, this would be no longer true if > these binary trees were used as library in a bigger program where using > memory pools is inappropriate, e.g. because the data managed by the > binary trees has an unpredictable lifetime. > > I do not say that it is complete nonsense to do this comparison, but > only that it is more specific than a reader would assume. The innocent > reader expects a comparison of binary tree performance, not of methods > of managing memory (and this is it finally). The true name of this test > should be "manage_many_small_memory_cells_where_pools_are_allowed". (It > would be actually interesting to compare various versions of this test > with different memory management methods.) > > Gerd
So write an ocaml programm that uses and array or bigarray to pool its memory. That is the same as C does. MfG Goswin _______________________________________________ Caml-list mailing list. Subscription management: http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list Archives: http://caml.inria.fr Beginner's list: http://groups.yahoo.com/group/ocaml_beginners Bug reports: http://caml.inria.fr/bin/caml-bugs