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.

Subject: Re: [OMPI devel] how to add a component in the ompi?
From: hu yaohui (loki2441_at_[hidden])
Date: 2010-03-16 23:22:18


Hi Jeff & All
Yes,you are right,i was just a little dizzy then. i need to modify the send
function of component self in btl framework.
i just met a problem right now.
when i browse the function mca_btl_self_send(~/ompi/mca/btl/self/btl_self.c),i
think it use this to send the data
<snip>
303 reg = mca_btl_base_active_message_trigger + tag;
304 reg->cbfunc( btl, tag, des, reg->cbdata );
</snip>
i trace through the "mca_btl_base_active_message_trigger" to the function
where it get its value ,then i find function
mca_bml_r2_register(~/ompi/mca/bml/bml_r2.c),it
like this:
<snip>
728 mca_btl_base_active_message_trigger[tag].cbfunc = cbfunc;
729 mca_btl_base_active_message_trigger[tag].cbdata = data;
<snip>
when i trace through mca_bml_r2_register ,in the same file,i get this
structure:
<snip>
mca_bml_r2_module_t mca_bml_r2 = {
    {
        &mca_bml_r2_component,
        mca_bml_r2_add_procs,
        mca_bml_r2_del_procs,
        mca_bml_r2_add_btl,
        mca_bml_r2_del_btl,
        mca_bml_r2_del_proc_btl,
        mca_bml_r2_register, <------------------------------------
        mca_bml_r2_register_error,
        mca_bml_r2_finalize,
        mca_bml_r2_ft_event
    }

};
<snip>
after this ,i find the place where mca_bml_r2 is initialized,but i cannt
find anything related to mca_bml_r2_register.i just want to know reg =
mca_btl_base_active_message_trigger + tag;
really is.and i want to modify the send function of self ,is this the right
way? or you can tell me the right way to modify the send function of self
component.

Thanks & Regards
Yaohui Hu

On Wed, Mar 17, 2010 at 12:52 AM, Jeff Squyres <jsquyres_at_[hidden]> wrote:

> On Mar 16, 2010, at 9:45 AM, hu yaohui wrote:
>
> > it just said,i had a wrong command format,when i use mpirun --help,i
> really
> > didn't find the --mca parameter.why the tcp FAQ part list these command
> lines,
> > but it cann't execute successfully on my machine.Is there any another way
> to control the specific
> > btl components to be used?
>
> Make sure you're using the right mpirun -- you might have multiple
> installed on your machine.
>
> OMPI's "mpirun --help" definitely includes a description of the --mca
> parameter:
>
> -mca|--mca <arg0> <arg1>
> Pass context-specific MCA parameters; they are
> considered global if --gmca is not used and only
> one context is specified (arg0 is the parameter
> name; arg1 is the parameter value)
>
> --
> Jeff Squyres
> jsquyres_at_[hidden]
> For corporate legal information go to:
> http://www.cisco.com/web/about/doing_business/legal/cri/
>
>
> _______________________________________________
> devel mailing list
> devel_at_[hidden]
> http://www.open-mpi.org/mailman/listinfo.cgi/devel
>