Another alternative is to upgrade to lam 7.0.2.
Then you may lamboot several independant "lam universes" after setting
accordingly the environment variables LAM_MPI_SESSION_PREFIX and/or
LAM_MPI_SESSION_SUFFIX.
Easy then to lamboot one universe using some host-eth0 hostfile pointing
to your eth0 set of interfaces, and another lam universe using some
host-eth1 hostfile pointing to your eth1 set.
Setting up bonding is substancially more tricky and needs root privileges,
and some tweaking with the switch(es). I am not sure either it would be
very efficient for gigabit.
The best choice between a faster bonded network and two independant
gigabit networks may also depend on the communication pattern of your
two applications.
Hoping this may help also.
Pierre.
On Mon, 6 Oct 2003, Nihar Sanghvi wrote:
>
> On Mon, 6 Oct 2003, Dmitry Kovalsky wrote:
>
> - Hi there
> -
> - I have two nodes. I use gigabit to run in parallel. However the CPUs are
> - loaded to ~70% only. I want to setup another interface eth1 and to let
> - another job to be computed there. By this I want to load the CPU at 100%.
> - However seems LAM (6.5.9 I'm using) cann't run on eth0 and eth1 interfaces in
> - simultaneously. Or I'm wrong?
> -
>
> This basically is not an issue related to LAM. LAM does not know about
> the number of underlying network cards. All it needs is an IP address to
> communicate.
> Two processes in the same LAM universe may not be able to use
> different network cards.
>
> You could do something like Channel Bonding or unusual network topologies,
> on the lower level. This is beyond what LAM does.
>
> Hope this helps..
>
> Nihar
>
>
> - Sincerely yours,
> -
> - Ph.D. Student Dmytro Kovalskyy
> - Institute of Molecular Biology & Genetics
> - 150 Akad. Zabolotnogo Street,
> - Kiev-143, 03143
> - UKRAINE
> -
> - E-mail: dikov_at_[hidden]
> - Fax: +380 (44) 266-0759
> - Tel.: +380 (44) 266-5589
> -
> -
> -
> - _______________________________________________
> - This list is archived at http://www.lam-mpi.org/MailArchives/lam/
> -
>
>
> Powered by LAM/MPI...
> ---------------------------------------
> Nihar Sanghvi
> LAM/MPI Team
> Graduate Student (Indiana University)
> http://www.lam-mpi.org
> --------------------------------------
>
> _______________________________________________
> This list is archived at http://www.lam-mpi.org/MailArchives/lam/
>
--
_/_/_/_/ _/ _/ Dr. Pierre VALIRON
_/ _/ _/ _/ Laboratoire d'Astrophysique (UMR 5571 CNRS)
_/ _/ _/ _/ Observatoire de Grenoble / U. Joseph Fourier
_/_/_/_/ _/ _/ BP 53 F-38041 Grenoble Cedex 9 (France)
_/ _/ _/
_/ _/ _/ http://www-laog.obs.ujf-grenoble.fr
_/ _/ _/ mailto:Pierre.Valiron_at_[hidden]
_/ _/_/ Phone / Fax: +33 (0)4 76.51.47.87 / (0)4 76.44.88.21
|
