Ok, I see whats happening. That component is calling a gcc specific memory barrier. I will replace it with the appropriate opal_atomic call.
-Nathan On Sunday, March 02, 2014 5:12 PM, devel [devel-boun...@open-mpi.org] on behalf of Paul Hargrove [phhargr...@lbl.gov] wrote: > To: Open MPI Developers > Subject: [OMPI devel] v1.7.5rc1 build failure: unresolved __sync_syncronize() > > With many testers still running at this time, the first to complete is a > failure report. > > From a FreBSD-6/amd64 platform: > CCLD otfmerge-mpi > /data/home/hargrove/OMPI/openmpi-1.7.5rc1-freebsd6-amd64/BLD/ompi/contrib/vt/vt/../../../.libs/libmpi.a(osc_sm > _passive_target.o)(.text+0x18b): In function `lk_fetch32': > /data/home/hargrove/OMPI/openmpi-1.7.5rc1-freebsd6-amd64/openmpi-1.7.5rc1/ompi/mca/osc/sm/:51: > undefined reference to `__sync_synchronize' > > Keep in mind that with 99% certainty this has NOTHING to do with VT. It just > happens thatotfmerge-mpi is the first executable linked with libmpi. Rather > the fault lies with the __sync_synchronize call in osc_sm_passive_target.c. > The __sync_synchronize() call is not only gcc-specific, but didn't exist > prior to about gcc-4.1. Surely there must be a opal call that should be used > here instead? > > There is no reason to think this is specific to FreeBSD-6, but rather the use > of a gcc older than the addition of __sync_syncronize() seems the most likely > key to exposing the problem. I suspect that as my non-gcc testers complete > (esp. PGI and Sun) this same issue will arise there. > > > On Sat, Mar 1, 2014 at 6:13 PM, Ralph Castain > <r...@open-mpi.org<mailto:r...@open-mpi.org>> wrote: > In the usual place: > > http://www.open-mpi.org/software/ompi/v1.7/ > > Please subject this to your best tests as we hope to roll this (plus bug > fixes) to 1.8.0 at the end of the month. This includes the new OSHMEM > support, plus a completely updated MPI-3 compliant one-sided implementation. > > Scheduled release date: Mar 10 > > Thanks > Ralph > > _______________________________________________ > devel mailing list > de...@open-mpi.org<mailto:de...@open-mpi.org> > http://www.open-mpi.org/mailman/listinfo.cgi/devel > > > > -- > Paul H. Hargrove > phhargr...@lbl.gov<mailto:phhargr...@lbl.gov> > Future Technologies Group > Computer and Data Sciences Department Tel: +1-510-495-2352 > Lawrence Berkeley National Laboratory Fax: +1-510-486-6900
