[gmx-users] Compilation options

[leafyoung81-group at yahoo.com]

I guess that you are on x86 or x86-64. On these platforms and others with SIMD processor, kernel will automatically select which core (sse2 or sse) to run, and the core is written in assembly. Unless there is false recognition of the platform by GNU tools, there is not much improvement you may gain from changing switches.

Yang Ye

----- Original Message ----
From: Stéphane Teletchéa <steletch at jouy.inra.fr>
To: gmx-users at gromacs.org
Sent: Friday, December 16, 2005 11:51:51 PM
Subject: [gmx-users] Compilation options

Hi,

I'm trying to benchmark at best gromacs (3.3 vs 3.2 and vs scaling).

To explore Gromacs potential, i'm playing with provided compilation 
options, for instance :

./configure
--prefix=/home/mig/steletch/Programmes/gromacs-s3.3sse2mpilam
--enable-sse2
--enable-fortran
--enable-mpi
--disable-nice
--with-gnu-ld

I've looked around the ./configure --help but for instance the 
--disable-nice command is not presented (i've found it in the archives), 
the --enable-sse2 also :-(

Is there any option i can use to have better optimisations ?

Thanks in advance for comments/pointers.

Stéphane

-- 
Stéphane Téletchéa, PhD.                  http://www.steletch.org
Unité Mathématique Informatique et Génome http://migale.jouy.inra.fr/mig
INRA, Domaine de Vilvert                  Tél : (33) 134 652 121 / 3086
78352 Jouy-en-Josas cedex, France         Fax : (33) 134 652 901
_______________________________________________
gmx-users mailing list
gmx-users at gromacs.org
http://www.gromacs.org/mailman/listinfo/gmx-users
Please don't post (un)subscribe requests to the list. Use the
www interface or send it to gmx-users-request at gromacs.org.