From: YAMAGATA yoriyuki <yoriyuki@mbg.sphere.ne.jp>
To: markus@oefai.at
Cc: caml-list@inria.fr
Subject: Re: [Caml-list] Surreal-0.0.3
Date: Tue, 21 May 2002 21:11:28 +0900 [thread overview]
Message-ID: <20020521211128T.yoriyuki@mbg.sphere.ne.jp> (raw)
In-Reply-To: <20020516170347.GA25822@kiefer.ai.univie.ac.at>
From: Markus Mottl <markus@oefai.at>
Subject: Re: [Caml-list] Surreal-0.0.3
Date: Thu, 16 May 2002 19:03:47 +0200
> The only problem of such a library might be its efficiency...
A pioneer work by Böhm et al shows that a naive approach using
functions as reals achieves better performance than a lazy approach
(at least the one using infinite n-base expansion).
The main point of Surreal is performance. (So, I don't use lazy
approaches.) I tried some idea to boost performance for large scale
computation. Another reason I was discouraged is that I don't know
how to show the performance improvement. I hope someone who has
experience with numerical computation looks my idea and judges whether
it is useful.
Yet another problem I have encountered is memory exhaustion. In my
experiment, memory is major limitation (rather time). caml lazy
construct always memorizes values, so one may encounter a similar
problem. Haskel or other lazy languages may have better space
efficiency, though.
That's my thought.
--
Yamagata Yoriyuki
http://www.mars.sphere.ne.jp/yoriyuki/
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prev parent reply other threads:[~2002-05-21 21:06 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-05-16 16:05 YAMAGATA yoriyuki
2002-05-16 17:03 ` Markus Mottl
2002-05-21 12:11 ` YAMAGATA yoriyuki [this message]
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