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Subject: Re: [OMPI users] btl_tcp_if_exclude param
From: Gabriele Fatigati (g.fatigati_at_[hidden])
Date: 2010-04-13 09:17:07


Yes, it's right!

Now i can see btl_tcp_if_include flag:

MCA btl: parameter "btl_tcp_if_include" (current value: <none>, data source:
default value)
MCA btl: parameter "btl_tcp_if_exclude" (current value: "eth0,ib0,ib1", data
source: file

[/cineca/prod/opt/compilers/openmpi/1.3.3/intel--11.1--binary/etc/openmpi-mca-params.conf])

My actual configuration is:

btl = ^tcp
btl_tcp_if_exclude = eth0,ib0,ib1
oob_tcp_include = eth1,lo

But is it right? I have some doubt..

2010/4/13 Jeff Squyres <jsquyres_at_[hidden]>

> On Apr 13, 2010, at 9:03 AM, Gabriele Fatigati wrote:
>
> > ompi_info --param btl tcp
>
> Ah ha... this is revealing:
>
> > MCA btl: parameter "btl" (current value: "^tcp", data
> source: file
> >
> [/cineca/prod/opt/compilers/openmpi/1.3.3/intel--11.1--binary/etc/openmpi-mca-params.conf])
> > Default selection set of components for the btl
> framework (<none> means use all components that can be found)
>
> It seems you have a config file
> /cineca/prod/opt/compilers/openmpi/1.3.3/intel--11.1--binary/etc/openmpi-mca-params.conf
> that is excluding the TCP BTL from being used.
>
> This config file will even prevent the TCP BTL from being shown in
> ompi_info -- remember that ompi_info shows *current* values of MCA
> parameters. So you might want to do something like this:
>
> ompi_info --mca btl "" --param btl tcp
>
> That would override the "btl" MCA parameter in your config file, allow the
> BTL TCP to be loaded by ompi_info, and therefore show you all the BTL TCP
> params.
>
> Make sense?
>
> --
> Jeff Squyres
> jsquyres_at_[hidden]
> For corporate legal information go to:
> http://www.cisco.com/web/about/doing_business/legal/cri/
>
>
> _______________________________________________
> users mailing list
> users_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/users
>
>

-- 
Ing. Gabriele Fatigati
Parallel programmer
CINECA Systems & Tecnologies Department
Supercomputing Group
Via Magnanelli 6/3, Casalecchio di Reno (BO) Italy
www.cineca.it                    Tel:   +39 051 6171722
g.fatigati [AT] cineca.it