What platform and distribution do you have? Brice
Le 24/09/2011 20:37, Ralph Castain a écrit : > Yep, it fails. Runs on my Mac, but not under Linux. > > Program terminated with signal 11, Segmentation fault. > #0 0x00002aaaaacdbedd in hwloc_bitmap_snprintf () from > /nfs/rinfs/san/homedirs/rhc/lib/libhwloc.so.3 > (gdb) where > #0 0x00002aaaaacdbedd in hwloc_bitmap_snprintf () from > /nfs/rinfs/san/homedirs/rhc/lib/libhwloc.so.3 > #1 0x00002aaaaacdc060 in hwloc_bitmap_asprintf () from > /nfs/rinfs/san/homedirs/rhc/lib/libhwloc.so.3 > #2 0x00002aaaaacd9b34 in hwloc__xml_export_object () from > /nfs/rinfs/san/homedirs/rhc/lib/libhwloc.so.3 > #3 0x00002aaaaacda325 in hwloc___nolibxml_prepare_export () from > /nfs/rinfs/san/homedirs/rhc/lib/libhwloc.so.3 > #4 0x00002aaaaacda39c in hwloc__nolibxml_prepare_export () from > /nfs/rinfs/san/homedirs/rhc/lib/libhwloc.so.3 > #5 0x00002aaaaacda4be in hwloc_topology_export_xmlbuffer () from > /nfs/rinfs/san/homedirs/rhc/lib/libhwloc.so.3 > #6 0x00000000004009b8 in main () at xmlbuffer.c:31 > > On Sep 24, 2011, at 9:45 AM, Brice Goglin wrote: > >> Indeed, this object contains invalid pointers. >> >> Can you try to run tests/xmlbuffer.c from hwloc's tree? It does >> export+import+export+compare on the same machine. It would be good to >> know if it fails on one of the machines you're using here. >> >> https://svn.open-mpi.org/trac/hwloc/browser/branches/v1.2-ompi/tests/xmlbuffer.c?rev=3837&format=txt >> >> thanks >> Brice >> >> >> >> Le 24/09/2011 17:07, Ralph Castain a écrit : >>> FWIW: I tried just printing out the contents of that root object >>> immediately after importing the xml, and it clearly has a problem: >>> >>> (gdb) print *obj >>> $2 = {type = OPAL_HWLOC122_hwloc_OBJ_SYSTEM, os_index = 0, name = 0x101 >>> <Address 0x101 out of bounds>, memory = { >>> total_memory = 46912502995240, local_memory = 46912502995240, >>> page_types_len = 0, page_types = 0x0}, attr = 0x2, >>> depth = 6900112, logical_index = 0, os_level = 6571424, next_cousin = 0x0, >>> prev_cousin = 0xffffffff, parent = 0x0, >>> sibling_rank = 0, next_sibling = 0x0, prev_sibling = 0x0, arity = 145, >>> children = 0x2aaaab139738, >>> first_child = 0x2aaaab139738, last_child = 0x0, userdata = 0x0, cpuset = >>> 0x0, complete_cpuset = 0x0, >>> online_cpuset = 0x644700, allowed_cpuset = 0x691970, nodeset = 0x6919e0, >>> complete_nodeset = 0x644c90, >>> allowed_nodeset = 0x644cb0, distances = 0x6948b0, distances_count = >>> 6900000, infos = 0x0, infos_count = 0} >>> >>> >>> On Sep 24, 2011, at 9:02 AM, Ralph Castain wrote: >>> >>>> Here's the trace: >>>> >>>> #0 0x00002aaaaae61737 in hwloc__xml_export_object (output=0x7fffffffd890, >>>> topology=0x695f10, obj=0x2aaaab139b28) >>>> at topology-xml.c:1094 >>>> #1 0x00002aaaaae61b69 in hwloc___nolibxml_prepare_export >>>> (topology=0x695f10, >>>> xmlbuffer=0x698a70 "<?xml version=\"1.0\" >>>> encoding=\"UTF-8\"?>\n<!DOCTYPE topology SYSTEM >>>> \"hwloc.dtd\">\n<topology>\n <object type=\"Unknown\" >>>> os_level=\"-1424778408\" os_index=\"10922\" cpuset=\"0xf...f\" >>>> complete_cpuset=\"0xf...f\" onl"..., >>>> buflen=16384) at topology-xml.c:1193 >>>> #2 0x00002aaaaae61be0 in hwloc__nolibxml_prepare_export >>>> (topology=0x695f10, bufferp=0x7fffffffd988, buflenp=0x7fffffffd97c) >>>> at topology-xml.c:1207 >>>> #3 0x00002aaaaae61d02 in opal_hwloc122_hwloc_topology_export_xmlbuffer >>>> (topology=0x695f10, xmlbuffer=0x7fffffffd988, >>>> buflen=0x7fffffffd97c) at topology-xml.c:1281 >>>> #4 0x00002aaaaae529f4 in opal_hwloc_compare (topo1=0x695f10, >>>> topo2=0x6915c0, type=22 '\026') at base/hwloc_base_dt.c:183 >>>> #5 0x00002aaaaadf348c in opal_dss_compare (value1=0x695f10, >>>> value2=0x6915c0, type=22 '\026') at dss/dss_compare.c:39 >>>> #6 0x00002aaaaad9b5f7 in process_orted_launch_report (fd=-1, event=1, >>>> data=0x6444d0) at base/plm_base_launch_support.c:564 >>>> #7 0x00002aaaaae3881f in event_process_active_single_queue >>>> (base=0x60dd60, activeq=0x6111e0) at event.c:1329 >>>> #8 0x00002aaaaae38c71 in event_process_active (base=0x60dd60) at >>>> event.c:1396 >>>> #9 0x00002aaaaae3902b in opal_libevent2012_event_base_loop >>>> (base=0x60dd60, flags=1) at event.c:1598 >>>> #10 0x00002aaaaadf080d in opal_progress () at runtime/opal_progress.c:189 >>>> #11 0x00002aaaaad9bbfa in orte_plm_base_daemon_callback (num_daemons=2) at >>>> base/plm_base_launch_support.c:666 >>>> #12 0x00002aaaaada49e1 in plm_slurm_launch_job (jdata=0x67a500) at >>>> plm_slurm_module.c:404 >>>> #13 0x0000000000403822 in orterun (argc=4, argv=0x7fffffffe1d8) at >>>> orterun.c:817 >>>> #14 0x0000000000402aa3 in main (argc=4, argv=0x7fffffffe1d8) at main.c:13 >>>> >>>> And the error report >>>> >>>> Program received signal SIGSEGV, Segmentation fault. >>>> 0x00002aaaaae61737 in hwloc__xml_export_object (output=0x7fffffffd890, >>>> topology=0x695f10, obj=0x2aaaab139b28) >>>> at topology-xml.c:1094 >>>> 1094 sprintf(tmp, "%llu", (unsigned long long) >>>> obj->memory.page_types[i].count); >>>> (gdb) print obj >>>> $1 = (opal_hwloc122_hwloc_obj_t) 0x2aaaab139b28 >>>> (gdb) print *obj >>>> $2 = {type = 2870188824, os_index = 10922, name = 0x2aaaab139b18 >>>> "\b\233\023\253\252*", memory = {total_memory = 6579376, >>>> local_memory = 6579376, page_types_len = 2870188856, page_types = >>>> 0x2aaaab139b38}, attr = 0x2aaaab139b48, >>>> depth = 2870188872, logical_index = 10922, os_level = -1424778408, >>>> next_cousin = 0x2aaaab139b58, >>>> prev_cousin = 0x2aaaab139b68, parent = 0x2aaaab139b68, sibling_rank = >>>> 2870188920, next_sibling = 0x2aaaab139b78, >>>> prev_sibling = 0x2aaaab139b88, arity = 2870188936, children = >>>> 0x2aaaab139b98, first_child = 0x2aaaab139b98, >>>> last_child = 0x2aaaab139ba8, userdata = 0x2aaaab139ba8, cpuset = >>>> 0x2aaaab139bb8, complete_cpuset = 0x2aaaab139bb8, >>>> online_cpuset = 0x2aaaab139bc8, allowed_cpuset = 0x2aaaab139bc8, nodeset = >>>> 0x2aaaab139bd8, >>>> complete_nodeset = 0x2aaaab139bd8, allowed_nodeset = 0x2aaaab139be8, >>>> distances = 0x2aaaab139be8, >>>> distances_count = 2870189048, infos = 0x2aaaab139bf8, infos_count = >>>> 2870189064} >>>> (gdb) print obj->memory >>>> $3 = {total_memory = 6579376, local_memory = 6579376, page_types_len = >>>> 2870188856, page_types = 0x2aaaab139b38} >>>> (gdb) print obj->memory.page_types >>>> $4 = (struct opal_hwloc122_hwloc_obj_memory_page_type_s *) 0x2aaaab139b38 >>>> (gdb) print i >>>> $5 = 1612 >>>> (gdb) print obj->memory.page_types[1600] >>>> $6 = {size = 0, count = 0} >>>> (gdb) print obj->memory.page_types[1612] >>>> Cannot access memory at address 0x2aaaab13fff8 >>>> (gdb) print obj->memory.page_types[1611] >>>> $7 = {size = 0, count = 0} >>>> (gdb) >>>> >>>> >>>> The whole obj looks like trash to me. I looked a little more - the object >>>> referenced is the root object: >>>> >>>> 1193 hwloc__xml_export_object (&output, topology, >>>> hwloc_get_root_obj(topology)); >>>> >>>> I'm continuing to look in case I'm doing something stupid, but the code is >>>> pretty linear here - unpack, import, export for compare. >>>> >>>> >>>> On Sep 24, 2011, at 8:59 AM, Jeff Squyres wrote: >>>> >>>>> Here's some feedback from Ralph -- any idea what's going wrong here? >>>>> >>>>> ----- >>>>> >>>>> 1. I export a topology into xml using >>>>> >>>>> hwloc_topology_export_xmlbuffer(t, &xmlbuffer, &len); >>>>> >>>>> I then pack and send the string. >>>>> >>>>> 2. I unpack the string on the other end and import it into a topology >>>>> hwloc_topology_init(&t); >>>>> if (0 != (rc = hwloc_topology_set_xmlbuffer(t, xmlbuffer, >>>>> strlen(xmlbuffer)))) { >>>>> hwloc_topology_destroy(t); >>>>> goto cleanup; >>>>> } >>>>> hwloc_topology_load(t); >>>>> >>>>> 3. I then need to compare two topologies, so I export the topology I >>>>> received into another xml string >>>>> hwloc_topology_export_xmlbuffer(t1, &x1, &l1); >>>>> >>>>> It is this export that fails, which implies to me that somehow the import >>>>> didn't work right. Note that this code worked fine with libxml2, so this >>>>> is a regression. >>>>> >>>>> >>>>> On Sep 22, 2011, at 9:39 AM, Jeff Squyres wrote: >>>>> >>>>>> Yes, I can get some testing of the ompi branch pretty quickly. I can >>>>>> bring in a new copy of this later today and see what we can see. >>>>>> >>>>>> Many thanks! >>>>>> >>>>>> >>>>>> On Sep 19, 2011, at 9:05 AM, Brice Goglin wrote: >>>>>> >>>>>>> I pushed the new minimalistic XML import/export implementation without >>>>>>> libxml2 to the nolibxml branch. If libxml2 is available, it's still used >>>>>>> by default. --disable-libxml2 or some env variables can be used for >>>>>>> force the minimalistic implementation if needed. The minimalistic implem >>>>>>> is only guaranteed to import XML files that were generated by hwloc >>>>>>> (even if libxml was enabled there). >>>>>>> >>>>>>> I also backported most of this to the new v1.2-ompi branch (required to >>>>>>> backport some other XML cleanups from trunk). This branch will now serve >>>>>>> as a base for Open MPI's embedded hwloc. The idea is to have a complete >>>>>>> v1.2 + nolibxml somewhere so that we can at least run make check (Open >>>>>>> MPI does not embed enough to run hwloc's make check). >>>>>>> >>>>>>> How do we proceed now? Can we have the OMPI guys test the new code soon? >>>>>>> Should I wait for their feedback before merging the nolibxml branch into >>>>>>> the trunk? I'd like to merge this in v1.3 too (and basically release rc2 >>>>>>> as the actual first feature-complete RC), so getting feedback early >>>>>>> might be appreciated. >>>>>>> >>>>>>> Brice >>>>>>> >>>>>>> _______________________________________________ >>>>>>> hwloc-devel mailing list >>>>>>> [email protected] >>>>>>> http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-devel >>>>>> -- >>>>>> Jeff Squyres >>>>>> [email protected] >>>>>> For corporate legal information go to: >>>>>> http://www.cisco.com/web/about/doing_business/legal/cri/ >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> hwloc-devel mailing list >>>>>> [email protected] >>>>>> http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-devel >>>>> -- >>>>> Jeff Squyres >>>>> [email protected] >>>>> For corporate legal information go to: >>>>> http://www.cisco.com/web/about/doing_business/legal/cri/ >>>>> >>> _______________________________________________ >>> hwloc-devel mailing list >>> [email protected] >>> http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-devel
