Please run "hwloc-gather-topology simics" and send the resulting simics.tar.bz2 that it will create. However, I assume that the simulator returns buggy x86 cpuid information, so we'll see if we want/can easily workaround the bug or just let simics developers fix it. Brice
Le 29/04/2014 01:15, Friedley, Andrew a écrit : > Hi, > > I ran into a problem when running OMPI v1.8.1 -- a divide by zero crash deep > in the hwloc code called by OMPI. The system I'm running is a simics x86_64 > emulator and RHEL 6.3. I can reproduce the error running lstopo from hwloc > v1.9: > > [root@viper0 bin]# LD_LIBRARY_PATH=/root/hwloc/lib ./lstopo -v > Floating point exception (core dumped) > > > Hwloc v1.1rc6, already installed on the system, and a corresponding OMPI > 1.6.5 build, works with no problems: > > [root@viper0 bin]# lstopo --version > lstopo 1.1rc6 > [root@viper0 bin]# lstopo -v > Machine (P#0 local=2055580KB total=2055580KB DMIProductName=Bochs > DMIProductVersion= DMIProductSerial= DMIChassisVendor=Bochs DMIChassisType=1 > DMIChassisVersion= DMIChassisSerial= DMIChassisAssetTag= DMIBIOSVendor=Bochs > DMIBIOSVersion=Bochs DMIBIOSDate=01/01/2007 DMIS) > Socket L#0 (P#0) > L3Cache L#0 (8192KB line=64) > L2Cache L#0 (256KB line=64) > L1Cache L#0 (32KB line=64) > Core L#0 (P#0) > PU L#0 (P#0) > depth 0: 1 Machine (type #1) > depth 1: 1 Socket (type #3) > depth 2: 1 Cache (type #4) > depth 3: 1 Cache (type #4) > depth 4: 1 Cache (type #4) > depth 5: 1 Core (type #5) > depth 6: 1 PU (type #6) > > > Here's the output from a GDB session on hwloc v1.9: > > [root@viper0 bin]# LD_LIBRARY_PATH=/root/hwloc/lib gdb ./lstopo > GNU gdb (GDB) Red Hat Enterprise Linux (7.2-56.el6) > Copyright (C) 2010 Free Software Foundation, Inc. > License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> > This is free software: you are free to change and redistribute it. > There is NO WARRANTY, to the extent permitted by law. Type "show copying" > and "show warranty" for details. > This GDB was configured as "x86_64-redhat-linux-gnu". > For bug reporting instructions, please see: > <http://www.gnu.org/software/gdb/bugs/>... > Reading symbols from /root/hwloc/bin/lstopo...done. > (gdb) r -v > Starting program: /root/hwloc/bin/lstopo -v > warning: no loadable sections found in added symbol-file system-supplied DSO > at 0x7ffff7ffd000 > > Program received signal SIGFPE, Arithmetic exception. > 0x00007ffff7df0558 in look_proc (infos=0x61b6a0, highest_cpuid=11, > highest_ext_cpuid=<value optimized out>, features=<value optimized out>, > cpuid_type=intel) > at topology-x86.c:323 > 323 infos->threadid = infos->logprocid % infos->max_nbthreads; > Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.80.el6.x86_64 > (gdb) bt > #0 0x00007ffff7df0558 in look_proc (infos=0x61b6a0, highest_cpuid=11, > highest_ext_cpuid=<value optimized out>, features=<value optimized out>, > cpuid_type=intel) at topology-x86.c:323 > #1 0x00007ffff7df165a in look_procs (topology=0x619100, nbprocs=1, > fulldiscovery=0) at topology-x86.c:741 > #2 hwloc_look_x86 (topology=0x619100, nbprocs=1, fulldiscovery=0) at > topology-x86.c:886 > #3 0x00007ffff7df17f9 in hwloc_x86_discover (backend=<value optimized out>) > at topology-x86.c:934 > #4 0x00007ffff7dd6568 in hwloc_discover (topology=0x619100) at > topology.c:2452 > #5 hwloc_topology_load (topology=0x619100) at topology.c:2925 > #6 0x0000000000402cf0 in main (argc=<value optimized out>, argv=<value > optimized out>) at lstopo.c:581 > (gdb) print infos->logprocid > $1 = 0 > (gdb) print infos->max_nbthreads > $2 = 0 > > > Any ideas? Any other info I should provide? > > Thanks, > > Andrew > _______________________________________________ > hwloc-users mailing list > hwloc-us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-users
