Open MPI logo

Open MPI Development Mailing List Archives

  |   Home   |   Support   |   FAQ   |  

This web mail archive is frozen.

This page is part of a frozen web archive of this mailing list.

You can still navigate around this archive, but know that no new mails have been added to it since July of 2016.

Click here to be taken to the new web archives of this list; it includes all the mails that are in this frozen archive plus all new mails that have been sent to the list since it was migrated to the new archives.

From: Jeff Squyres (jsquyres_at_[hidden])
Date: 2007-10-11 08:49:10

If you copy the sm btl, be sure to change all function names /
variables from "*btl_sm_..." to "*btl_<your_name_name>_...". The
OMPI configure/build/run system requires that the name of the
component be the same as:

- the directory that it lives in under ompi/mca/btl
- the well-known component struct
- the filename of the DSO

That's how the infrastructure finds your component and all the
relevant parts.

Also, since no one answered this question directly: the shared memory
code is only in two directories:

- ompi/mca/btl/sm
- ompi/mca/common/sm

It's split between those two because it was envisioned that a coll
component may also want to share some data between the sm btl and
itself. Hence, the stuff in "common" can be shared.

On Oct 11, 2007, at 6:46 AM, Aurelien Bouteiller wrote:

> The elegant way is to go the way you are going. Basically you need to
> provide open and close to the mca framework, init and finalize to
> the btl framework and populate all the functions defined in btl.h and
> btl/base/base.h. Copying an already existing btl is the best way not
> to forget anybody in that process. You also need to change names in
> The will do all the smart things and
> recognize and configure your new component. This is that simple :]
> Aurelien
> --
> Aurelien Bouteiller, PhD
> Innovative Computing Laboratory - MPI group
> +1 865 974 6321
> 1122 Volunteer Boulevard
> Claxton Education Building Suite 350
> Knoxville, TN 37996
> Le 11 oct. 07 à 10:39, Torje Henriksen a écrit :
>> Hi,
>> I would like to make my own btl component for shared memory, and
>> use that
>> instead of the sm component.
>> First off I would just copy the current sm component, give it
>> another name
>> and see if I can get that to load instead.
>> Is there an elegant way of adding components, any documentation on
>> this?
>> I've tried to grep for mca_btl_sm etc, but the number of files
>> returned is
>> daunting. Do I have to make changes all around ompi, or is there
>> something
>> I'm missing? Some automagical goodness, maybe? ;)
>> Tanks,
>> -Torje
>> _______________________________________________
>> devel mailing list
>> devel_at_[hidden]
> _______________________________________________
> devel mailing list
> devel_at_[hidden]

Jeff Squyres
Cisco Systems