(Just to followup for the list) I merged in the master PR, and created a PR for v2.0.0: https://github.com/open-mpi/ompi-release/pull/1149
Thanks Paul and Brice! On Sun, May 8, 2016 at 3:21 PM, Brice Goglin <brice.gog...@inria.fr> wrote: > Thanks, applied to hwloc. And PR for OMPI master at > https://github.com/open-mpi/ompi/pull/1657 > Brice > > > > Le 06/05/2016 00:29, Paul Hargrove a écrit : > > I have some good news: I have a fix!! > > FWIW: I too can build w/ xlc 12.1 (also BG/Q). > It is just the 13.1.0 on Power7 that crashes building hwloc. > Meanwhile, 13.1.2 on Power8 little-endian does not crash (but is a > different front-end than big-endian if I understand correctly). > > I started "bisecting" the file topology-xml-nolibxml.c and found that xlc > is crashing on "__hwloc_attribute_may_alias". > Simply disabling use of that attribute resolves the problem. > > So, here is the fix, which simply changes the check for this attribute to > match the way in which hwloc uses it. > It disqualifies the buggy compiler version(s) based on behavior, rather > than us trying to list affected versions. > > --- config/hwloc_check_attributes.m4~ 2016-05-05 17:18:10.380479303 -0500 > +++ config/hwloc_check_attributes.m4 2016-05-05 17:21:30.399799031 -0500 > @@ -322,9 +322,10 @@ > # Attribute may_alias: No suitable cross-check available, that works > for non-supporting compilers > # Ignored by intel-9.1.045 -- turn off with -wd1292 > # Ignored by PGI-6.2.5; ignore not detected due to missing cross-check > + # The test case is chosen to match hwloc's usage, and reproduces an > xlc-13.1.0 bug. > # > _HWLOC_CHECK_SPECIFIC_ATTRIBUTE([may_alias], > - [int * p_value __attribute__ ((__may_alias__));], > + [struct { int i; } __attribute__ ((__may_alias__)) * p_value;], > [], > []) > > > -Paul [proving that I am good for more than just *breaking* other people's > software - I can fix things too] > > On Thu, May 5, 2016 at 2:28 PM, Jeff Squyres (jsquyres) < > <jsquy...@cisco.com>jsquy...@cisco.com> wrote: > >> On May 5, 2016, at 5:27 PM, Josh Hursey < <jjhur...@open-mpi.org> >> jjhur...@open-mpi.org> wrote: >> > >> > Since this also happens with hwloc 1.11.3 standalone maybe hwloc folks >> can take point on further investigation? >> >> I think Brice would love your assistance in figuring this out, since I'm >> guessing he doesn't have access to these platforms, either. :-) >> >> -- >> Jeff Squyres >> jsquy...@cisco.com >> For corporate legal information go to: >> <http://www.cisco.com/web/about/doing_business/legal/cri/> >> http://www.cisco.com/web/about/doing_business/legal/cri/ >> >> _______________________________________________ >> devel mailing list >> de...@open-mpi.org >> Subscription: https://www.open-mpi.org/mailman/listinfo.cgi/devel >> Link to this post: >> http://www.open-mpi.org/community/lists/devel/2016/05/18917.php >> > > > > -- > Paul H. Hargrove <phhargr...@lbl.gov> > phhargr...@lbl.gov > Computer Languages & Systems Software (CLaSS) Group > Computer Science Department Tel: +1-510-495-2352 > Lawrence Berkeley National Laboratory Fax: +1-510-486-6900 > > > > _______________________________________________ > devel mailing list > de...@open-mpi.org > Subscription: https://www.open-mpi.org/mailman/listinfo.cgi/devel > Link to this post: > http://www.open-mpi.org/community/lists/devel/2016/05/18940.php >
