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
makefile.am. The autogen.sh 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
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