Oh, good catch -- thanks.
I wouldn't call abort -- that will dump core. Just show_help() and
exit(nonzero), I guess.
On Dec 4, 2014, at 3:31 PM, George Bosilca <bosi...@icl.utk.edu> wrote:
> You can't use the PML error reporting mechanism in this particular instance,
> it is too early in the setup process (in the BTL component init function) and
> the PML has not setup the error callback yet.
>
> This function is called during the MPI_Init, at a time where most of the Open
> MPI infrastructure is not yet setup. I guess the safest way to force the
> process to fail is to call exit or maybe abort.
>
> George.
>
>
>
> On Fri, Dec 5, 2014 at 3:40 AM, Jeff Squyres (jsquyres) <jsquy...@cisco.com>
> wrote:
> You're supposed to call the PML error handler, which was passed down to the
> BTL during initialization.
>
> That is, the BTL registers a btl_register_error function with the PML. The
> PML then calls this function and passes in its error handler function
> pointer. The BTL can then use that error handler to tell the PML when an
> error occurs.
>
> Right now, the only PML error handler aborts the job. So this should be a
> sufficient mechanism.
>
>
> On Dec 3, 2014, at 12:15 PM, Ralph Castain <r...@open-mpi.org> wrote:
>
> > We talked during the telecon about the user-reported issue where they asked
> > for knem support, it wasn’t available on the system, but we ran anyway at a
> > reduced performance level. The agreement we had was that OMPI should
> > instead fail at that point since the user had requested something we could
> > not do. I got tasked with implementing this.
> >
> > Here is the problem code:
> >
> > /* If "use_knem" is positive, then it's an error if knem support
> > is not available -- deactivate the sm btl. */
> > if (mca_btl_sm_component.use_knem > 0) {
> > opal_show_help("help-mpi-btl-sm.txt",
> > "knem requested but not available",
> > true, opal_process_info.nodename);
> > return NULL;
> >
> > As you can see, we deactivate sm but do not necessarily fail. Question for
> > you folks: how do I cause us to safely fail from within a BTL??
> >
> > Thanks
> > Ralph
> >
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>
>
> --
> Jeff Squyres
> jsquy...@cisco.com
> For corporate legal information go to:
> http://www.cisco.com/web/about/doing_business/legal/cri/
>
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--
Jeff Squyres
jsquy...@cisco.com
For corporate legal information go to:
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