[mpich-discuss] Linking to personal libraries

[Alejandro Allievi]

Hi Wesley,

Just to clarify myself: provided our NFS mirrors my home directory and
that LD_LIBRARY_PATH
is set correctly, the dynamic compile/link step for the user (me) is the
same as for static compile/link??

Thanks again Wesley!!

Alejandro


On Thu, Jun 6, 2013 at 11:15 AM, Wesley Bland <wbland at mcs.anl.gov> wrote:

> It depends on whether you are linking your library statically or
> dynamically. If you are linking statically, the linker puts everything in
> one executable that is sent to all of the nodes. If you do it dynamically,
> you need to make sure your libraries are available on all of the nodes you
> will be using (usually by using something like NFS to mirror your home
> directory across the cluster. You will also need to make sure your
> environment is set up correctly to allow the libraries to be found on the
> remote process, usually via an environment variable such as
> LD_LIBRARY_PATH.
>
> Wesley
>
>
> On Jun 6, 2013, at 6:18 AM, Alejandro Allievi <alejandro.allievi at gmail.com>
> wrote:
>
> H
> i
>
> When linking to personal libraries using MPICH2, how does each process
> access them in a distributed environment?? Does the linker actually
> combines
> everything
> into a single
> executable
> program
> and "sends a copy" of entire executable to each process even though not
> all processes may use the libraries?? Can somebody shed some light on the
> entire linking process??
>
> Thanks for any help!!
>
> Alejandro
>
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-- 
Alejandro Allievi
http://www.ace-net.ca/wiki/Alejandro_Allievi

"Tenez, mon ami, si vous y pensez bien, vous trouverez qu'en tout, notre
véritable sentiment n'est pas celui dans lequel nous n'avons jamais
vacillé; mais celui auquel nous sommes le plus habituellement revenus".
Denis Diderot.

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