[gmx-users] Software Raid and low GROMACS performance

[Alexandre Suman de Araujo]

Hi all.

I have two machines with Intel Quad Core processors and Intel 
motherboards. In the first one I'm running Open Suse with normal 
partition scheme. In the second I'm running Ubuntu 8.04 with software 
RAID 1.

Running a simulations in parallel (4 process, one for each core) in the 
first computer I have a scaling of almost 100%. The same simulation in 
the second computer gives me a very worst scaling.

Is it possible that the software RAID is the responsible for this lost 
in GROMACS performance? Does anybody have experience with this?

Thank's

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Alexandre Suman de Araujo                                    *
Faculdade de Ciências Farmacêuticas de Ribeirão Preto        *
Universidade de São Paulo                                    *
Dep. de Física e Química                                     *
Grupo de Física Biológica     * e-mail: asaraujo at fcfrp.usp.br*
Av. do Café, s/n°             * e-mail: ale.suman at gmail.com  *
CEP: 14040-903                * Phone: +55 (16) 3602-4172    *
Ribeirão Preto, SP, Brasil    * Phone: +55 (16) 3602-4222    *
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