Yeah, that caught my eye too as that is impossibly large. We only have a handful of active queues - looks to me like there is some kind of alignment issue.
Paul - has this configuration worked with prior versions of OMPI? Or is this something new? Ralph > On Aug 30, 2017, at 4:17 PM, Larry Baker <ba...@usgs.gov> wrote: > > Paul, > >> (gdb) print base->nactivequeues > > > seems like an extraordinarily large number to me. I don't know what the > implications are of the --enable-debug clang option is. Any chance the > SEGFAULT is a debugging trap when an uninitialized value is encountered? > > The other thought I had is an alignment trap if, for example, nactivequeues > is a 64-bit int but is not 64-bit aligned. As far as I can tell, > nactivequeues is a plain int. But, what that is on FreeBSD/amd64, I do not > know. > > Should there be more information in dmesg or a system log file with the trap > code so you can identify whether it is an instruction fetch (VERY unlikely), > an operand fetch, or a store that caused the trap? > > Larry Baker > US Geological Survey > 650-329-5608 > ba...@usgs.gov <mailto:ba...@usgs.gov> > > > >> On 30 Aug 2017, at 3:17:05 PM, Paul Hargrove <phhargr...@lbl.gov >> <mailto:phhargr...@lbl.gov>> wrote: >> >> I am testing the 2.1.2rc3 tarball on FreeBSD-11.1, configured with >> --prefix=[...] --enable-debug CC=clang CXX=clang++ --disable-mpi-fortran >> --with-hwloc=/usr/local >> >> The CC/CXX setting are to use the system default compilers (rather than >> gcc/g++ in /usr/local/bin). >> The --with-hwloc is to avoid issue #3992 >> <https://github.com/open-mpi/ompi/issues/3992> (though I have not determined >> if that impacts this RC). >> >> When running ring_c I get a SEGV from orterun, for which a gdb backtrace is >> given below. >> The one surprising thing (highlighted) in the backtrace is that both the RHS >> and LHS of the assignment appear to be valid memory locations. >> So, if the backtrace is accurate then I am at a loss as to why a SEGV occurs. >> >> -Paul >> >> >> Program terminated with signal 11, Segmentation fault. >> [...] >> #0 opal_libevent2022_event_assign (ev=0x8065482c0, base=<value optimized >> out>, fd=<value optimized out>, >> events=2, callback=<value optimized out>, arg=0x0) >> at >> /home/phargrov/OMPI/openmpi-2.1.2rc3-freebsd11-amd64/openmpi-2.1.2rc3/opal/mca/event/libevent2022/libevent/event.c:1779 >> 1779 ev->ev_pri = base->nactivequeues / 2; >> (gdb) print base->nactivequeues >> $3 = 106201992 >> (gdb) print ev->ev_pri >> $4 = 0 '\0' >> (gdb) where >> #0 opal_libevent2022_event_assign (ev=0x8065482c0, base=<value optimized >> out>, fd=<value optimized out>, >> events=2, callback=<value optimized out>, arg=0x0) >> at >> /home/phargrov/OMPI/openmpi-2.1.2rc3-freebsd11-amd64/openmpi-2.1.2rc3/opal/mca/event/libevent2022/libevent/event.c:1779 >> #1 0x00000008062e1fd2 in pmix_start_progress_thread () >> at >> /home/phargrov/OMPI/openmpi-2.1.2rc3-freebsd11-amd64/openmpi-2.1.2rc3/opal/mca/pmix/pmix112/pmix/src/util/progress_threads.c:83 >> #2 0x00000008063047e4 in PMIx_server_init (module=0x806545be8, >> info=0x802e16a00, ninfo=2) >> at >> /home/phargrov/OMPI/openmpi-2.1.2rc3-freebsd11-amd64/openmpi-2.1.2rc3/opal/mca/pmix/pmix112/pmix/src/server/pmix_server.c:310 >> #3 0x00000008062c12f6 in pmix1_server_init (module=0x800b106a0, >> info=0x7fffffffe290) >> at >> /home/phargrov/OMPI/openmpi-2.1.2rc3-freebsd11-amd64/openmpi-2.1.2rc3/opal/mca/pmix/pmix112/pmix1_server_south.c:140 >> #4 0x0000000800889f43 in pmix_server_init () >> at >> /home/phargrov/OMPI/openmpi-2.1.2rc3-freebsd11-amd64/openmpi-2.1.2rc3/orte/orted/pmix/pmix_server.c:261 >> #5 0x0000000803e22d87 in rte_init () >> at >> /home/phargrov/OMPI/openmpi-2.1.2rc3-freebsd11-amd64/openmpi-2.1.2rc3/orte/mca/ess/hnp/ess_hnp_module.c:666 >> #6 0x000000080084a45e in orte_init (pargc=0x7fffffffe988, >> pargv=0x7fffffffe980, flags=4) >> at >> /home/phargrov/OMPI/openmpi-2.1.2rc3-freebsd11-amd64/openmpi-2.1.2rc3/orte/runtime/orte_init.c:226 >> #7 0x00000000004046a4 in orterun (argc=7, argv=0x7fffffffea18) >> at >> /home/phargrov/OMPI/openmpi-2.1.2rc3-freebsd11-amd64/openmpi-2.1.2rc3/orte/tools/orterun/orterun.c:831 >> #8 0x0000000000403bc2 in main (argc=7, argv=0x7fffffffea18) >> at >> /home/phargrov/OMPI/openmpi-2.1.2rc3-freebsd11-amd64/openmpi-2.1.2rc3/orte/tools/orterun/main.c:13 >> >> >> >> -- >> Paul H. Hargrove phhargr...@lbl.gov >> <mailto: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 >> devel@lists.open-mpi.org <mailto:devel@lists.open-mpi.org> >> https://lists.open-mpi.org/mailman/listinfo/devel > > _______________________________________________ > devel mailing list > devel@lists.open-mpi.org > https://lists.open-mpi.org/mailman/listinfo/devel
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