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32- and 64-bit performance
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| Date: | -- (:) |
| From: | Jon Harrop <jon@f...> |
| Subject: | Re: [Caml-list] Re: 32- and 64-bit performance |
On Thursday 31 March 2005 16:05, Stefan Monnier wrote: > > I just bought a new Athlon 64 laptop and installed 32- and 64-bit Debian. > > Here are some timings, showing the performance change when moving from > > 32- to 64-bit using ocamlopt (3.08.2) and g++ (3.4.4): > > Is there a GNU/Linux (and OCaml) mode supporting the half-way case where > you use the new amd64 registers but still stay with 32bit pointers? > That should fix the one case where the amd64 mode is slower because of the > extra memory use. I do not believe there is such a mode, no. I'm not entirely sure how this could work but I'm quite happy to take a performance hit in a few programs. Particularly because arrays are so much more useful now. :-) -- Dr Jon D Harrop, Flying Frog Consultancy Ltd. Objective CAML for Scientists http://www.ffconsultancy.com/products/ocaml_for_scientists