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From: John Carr <jfc@MIT.EDU>
To: caml-list@inria.fr
Subject: Re: [Caml-list] 64-bit OCaml?
Date: Sat, 06 Nov 2004 10:47:06 -0500	[thread overview]
Message-ID: <200411061547.iA6Fl6ga001951@psi-phi.mit.edu> (raw)
In-Reply-To: Your message of "Sat, 06 Nov 2004 11:06:30 +0100." <20041106100630.GB26835@yquem.inria.fr>


> Also, the only situations where 64-bit code is beneficial are 1- large
> integer arithmetic (bignums, crypto), and 2- exploiting more than 4 Gb
> of RAM.

3 - some floating point intensive code if unaligned accesses are slow

On 32 bit machines heap values are only 32 bit aligned and loads and
stores of 64 bit floats may be slower due to misalignment.  The
performance impact varies by CPU.


  parent reply	other threads:[~2004-11-06 15:47 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-11-06  4:02 David McClain
2004-11-06  5:05 ` [Caml-list] " David Brown
2004-11-06  9:43   ` Sven Luther
2004-11-06  5:15 ` David Brown
2004-11-06  9:41 ` Sven Luther
2004-11-06 10:06 ` Xavier Leroy
2004-11-06 12:16   ` Sven Luther
2004-11-06 15:47   ` John Carr [this message]
2004-11-07 20:18   ` Francis Dupont

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