This one does seem like a bug. I'll open an issue.
> On Aug 14, 2015, at 3:08 PM, George Bosilca <bosi...@icl.utk.edu> wrote:
>
> Another issue, maybe a little bit more unsettling.
>
> If I iterate over the existing pvars, and for each after retrieving their
> name I use the name to search for the associated index I get an error. A
> short example is below.
>
> George.
>
>
> err = MPI_T_pvar_get_num(&numPvar);
> if(err) MPI_Abort(MPI_COMM_WORLD, 0);
> printf("%d MPI Performance Variables\n", numPvar);
>
> for(i = 0; i < numPvar; i++) {
> nameLen = sizeof(name);
> descLen = sizeof(desc);
> err = MPI_T_pvar_get_info(i, name, &nameLen, &verbosity,
> &varClass, &datatype, &enumtype, desc,
> &descLen, &binding, &isReadonly,
> &isContinous, &isAtomic);
> if( (MPI_SUCCESS != err) && (MPI_T_ERR_INVALID_INDEX != err) ) {
> printf("Failed to read Pvar %d/%d\n", i, numPvar);
> MPI_Abort(MPI_COMM_WORLD, 0);
> }
>
> printf("\t%s\tClass-%d\tBinding-%d\tReadonly-%s\tContinous-%s\tAtomic-%s\t%s\n",
> name, varClass, binding, isReadonly ? "T" : "F",
> isContinous ? "T" : "F", isAtomic ? "T" : "F", desc);
> err = MPI_T_pvar_get_index(name, binding, &pvar_idx);
> if (err != MPI_SUCCESS) {
> printf("cannot find %s pvar\n", name);
> MPI_Abort(MPI_COMM_WORLD, 0);
> }
> if( pvar_idx != i )
> printf("This is weird (%d != %d)!\n", pvar_idx, i);
> }
>
>
>
> On Fri, Aug 14, 2015 at 2:36 PM, George Bosilca <bosi...@icl.utk.edu> wrote:
> For this particular test I used the current master (022a9d8).
>
> I reread the MPI_T chapter and [as usual] there might be something that
> cautions the current behavior (aka. returning MPI_T_ERR_INVALID_INDEX for an
> index smaller than the number of cvars returned by MPI_T_cvar_get_num). This
> is indicated by the example 14.4, page 576. If I exclude this return code
> from the list of errors, then things are working as expected.
>
> What is the community feeling? Should we reutrn the exact number of available
> cvars or an upper bound is a valid value?
>
> George.
>
>
> On Fri, Aug 14, 2015 at 2:21 PM, Jeff Squyres (jsquyres) <jsquy...@cisco.com>
> wrote:
> George: what OMPI version did you test?
>
> > On Aug 14, 2015, at 2:14 PM, George Bosilca <bosi...@icl.utk.edu> wrote:
> >
> > This user email requires special attention, as it highlighted some issues
> > with our MPI_T variables.
> >
> > I wrote a short application to list all pvar and cvar available.
> > Unexpectedly, listing the cvars leads to a lot of failures, 138 over 1035
> > cvars. If a cvar is broken I would have expected (based on the reading of
> > the MPI_T chapter) not to be able to iterate over them instead of getting
> > an error. The tester is attached.
> >
> > George.
> >
> >
> > ---------- Forwarded message ----------
> > From: Khalid Hasanov <xali...@gmail.com>
> > Date: Fri, Aug 14, 2015 at 11:14 AM
> > Subject: [OMPI users] open mpi 1.8.6. MPI_T
> > To: Open MPI Users <us...@open-mpi.org>
> >
> >
> > Hello,
> >
> > I am trying to use MPI_T interface to set coll_tuned_bcast_algorithm mca
> > parameter during run time, however I was not successful to do that.
> >
> > I wonder if is it currently supported in Open MPI.
> >
> > I had the same problem with setting btl_self_eager_limit parameter.
> >
> > The code I am using attached below.
> >
> >
> > Thanks.
> >
> >
> > --
> > Best Regards,
> > Khalid
> >
> > _______________________________________________
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> > us...@open-mpi.org
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> > Link to this post:
> > http://www.open-mpi.org/community/lists/users/2015/08/27470.php
> >
> > <pvar_list.c>_______________________________________________
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> > de...@open-mpi.org
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> > Link to this post:
> > http://www.open-mpi.org/community/lists/devel/2015/08/17744.php
>
>
> --
> 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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> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/devel
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>
>
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> Link to this post:
> http://www.open-mpi.org/community/lists/devel/2015/08/17747.php
--
Jeff Squyres
jsquy...@cisco.com
For corporate legal information go to:
http://www.cisco.com/web/about/doing_business/legal/cri/
