From: David Brown <caml-list2@davidb.org>
To: Jacques Carette <carette@mcmaster.ca>
Cc: Xavier Leroy <Xavier.Leroy@inria.fr>, caml-list@yquem.inria.fr
Subject: Re: [Caml-list] compiler bug?
Date: Thu, 18 May 2006 13:07:32 -0700 [thread overview]
Message-ID: <20060518200732.GA31619@old.davidb.org> (raw)
In-Reply-To: <446CCB8E.8080601@mcmaster.ca>
On Thu, May 18, 2006 at 03:31:26PM -0400, Jacques Carette wrote:
> In Computer Algebra, people use Groebner bases all the time. They have
> doubly-exponential worst-case complexity -- but seem to work rather well
> in practice. So I have stopped paying attention to worst-case; average
> case, when available, does matter a lot more.
Except when someone made a decision like this, in say a revision control
system, and suddenly you discover that you've provoked a worst case
scenario, and it suddenly takes hundreds of cpu hours to check in a file
rather than a few seconds.
For something like a compiler, worse case behavior is very important. It
is not generally acceptable for a build to just hang in the compiler.
Dave
next prev parent reply other threads:[~2006-05-18 20:07 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-17 23:14 Dan Koppel
2006-05-17 23:33 ` [Caml-list] " John Carr
2006-05-18 17:15 ` Xavier Leroy
2006-05-18 17:34 ` Jacques Carette
2006-05-18 17:46 ` Xavier Leroy
2006-05-18 19:31 ` Jacques Carette
2006-05-18 20:07 ` David Brown [this message]
2006-05-18 20:15 ` Jacques Carette
2006-05-18 20:20 ` Alain Frisch
2006-05-18 18:19 ` skaller
2006-05-18 18:53 ` Jacques Carette
2006-05-19 1:47 ` skaller
2006-05-19 2:17 ` Brian Hurt
2006-05-19 3:11 ` skaller
2006-05-19 16:48 ` Jacques Carette
2006-05-19 19:10 ` skaller
2012-08-06 10:04 [Caml-list] Compiler bug? Dmitry Bely
2012-08-06 10:11 ` Alain Frisch
2012-08-06 10:20 ` Dmitry Bely
2012-08-06 10:34 ` Alain Frisch
2012-08-06 11:03 ` Dmitry Bely
2012-08-06 11:32 ` Alain Frisch
2012-08-06 12:16 ` Dmitry Bely
2012-08-07 1:35 ` Cedric Cellier
2012-08-08 16:03 ` Dmitry Bely
2012-08-08 18:03 ` Alain Frisch
2012-08-08 18:22 ` Jesper Louis Andersen
2012-08-08 18:40 ` Dmitry Bely
2012-08-08 19:29 ` Fabrice Le Fessant
2012-08-08 23:34 ` Anil Madhavapeddy
2012-08-09 0:53 ` Francois Berenger
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