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Date: Fri, 25 May 2007 14:26:32 -0400
From: Denis <denis.che@gmail.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] which -march flag to pick for Intel Core 2 Duo in make.conf?
In-Reply-To: <72bdee2f0705251003g5075c767pff4252bc9ed28638@mail.gmail.com>
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References: <AA0639A1EB70AE409130258CE7BDC31806646B17@messenger.cv63.navy.mil>
<72bdee2f0705251003g5075c767pff4252bc9ed28638@mail.gmail.com>
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On 5/25/07, Andreas Claesson <andreas.claesson@gmail.com> wrote:
> Since you (Denis) are doing a lot of mathematical calculations you
> will probably benefit from running in 64bit mode.
I often need to run Monte Carlo simulations (in C) which involve a lot
of array storage and array scanning/searching operations... I wonder
what the speed-up would be for those simulations if run under a 64-bit
mode. Are there any requirements on how the simulations should be
programmed in order to take advantage of the 64-bit arch, or is that
automatically done by the GCC compiler and the kernel?
--
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