We are getting extremely frequent C++ application deadlocks with the new patcher. We are still investigating.
George. On Fri, May 6, 2016 at 12:14 PM, Paul Hargrove <phhargr...@lbl.gov> wrote: > I am testing a tarball built from v2.x-dev-1410-g81e0924 > This includes pull request #1128 in which Nathan addressed multiple > "patcher" issues. > > However, I see the crash below in dlopen_test on a LITTLE-ENDIAN Power8 > system. > This is happening when built with "V13.1.2 (5725-C73, 5765-J08)", but not > with gcc on the same system. > So, I cannot conclusively assign blame to OpenMPI. > > -Paul > > Program terminated with signal SIGSEGV, Segmentation fault. > > (gdb) where > #0 0x0000000000000000 in ?? () > #1 0x00003fff897adb38 in intercept_munmap (start=0x3fff89670000, > length=65536) > at > /home/phargrov/OMPI/openmpi-v2.x-dev-1410-g81e0924-linux-ppc64el-xlc/openmpi-gitclone/opal/mca/memory/patcher/memory_patcher_component.c:155 > #2 0x00003fff8933bc80 in __GI__IO_setb () from /lib64/libc.so.6 > #3 0x00003fff89339528 in __GI__IO_file_close_it () from /lib64/libc.so.6 > #4 0x00003fff89327f74 in fclose@@GLIBC_2.17 () from /lib64/libc.so.6 > #5 0x0000000010000f7c in do_test () > at > /home/phargrov/OMPI/openmpi-v2.x-dev-1410-g81e0924-linux-ppc64el-xlc/openmpi-gitclone/ompi/debuggers/dlopen_test.c:97 > #6 0x00000000100010e0 in main (argc=1, argv=0x3fffff332888) > at > /home/phargrov/OMPI/openmpi-v2.x-dev-1410-g81e0924-linux-ppc64el-xlc/openmpi-gitclone/ompi/debuggers/dlopen_test.c:135 > > "start" is valid: > (gdb) print *(char*)0x3fff89670000 > $1 = 35 '#' > > Frame 1: > 155 opal_mem_hooks_release_hook (start, length, true); > > -- > Paul H. Hargrove 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/2016/05/18928.php >
