Thanks for the debugging. I guess VMware doesn't properly emulate the CPUID instruction.
Please do: 1) take a tarball from git master at https://ci.inria.fr/hwloc/job/master-0-tarball/ and build it 2) export HWLOC_COMPONENTS=-x86 in your terminal 3) do utils/hwloc/hwloc-gather-cpuid 4) tar cfj cpuid.tbz2 foo and send that cpuid.tbz2 Step (3) might do an infinite loop for the same reason, please replace for(i=0; ; i++) { with for(i=0; i<10; i++) { everywhere in utils/hwloc/hwloc-gather-cpuid.c This tarball will help me find what's buggy in VMware CPUID instruction. In the meantime, you can fix your hwloc by exporting HWLOC_COMPONENTS=-x86 in your environment. If somebody knows how do detect vmware by looking under /proc or /sys, we could use that to automatically set that environment variable. thanks Brice Le 01/02/2016 05:59, Jianjun Wen a écrit : > I did a debug build. Found it loops forever in this loop in > topology-x86.c:404. > > > /* Get package/core/thread information from cpuid 0x0b > * (Intel x2APIC) > */ > if (cpuid_type == intel && has_x2apic(features)) { > unsigned level, apic_nextshift, apic_number, apic_type, apic_id = > 0, apic_shift = 0, id; > for (level = 0; ; level++) { > ecx = level; > eax = 0x0b; > hwloc_x86_cpuid(&eax, &ebx, &ecx, &edx); > if (!eax && !ebx) > break; > } > > On Sun, Jan 31, 2016 at 8:30 PM, Christopher Samuel > <sam...@unimelb.edu.au <mailto:sam...@unimelb.edu.au>> wrote: > > On 01/02/16 15:09, Jianjun Wen wrote: > > > 0x00007ffff7bce13c in look_proc () from /lib64/libhwloc.so.5 > > > > Always the same place. > > pstack on the process when stuck might give more of an insight as it > should give more of a stack trace. > > Also running lstopo under strace should show what it is trying to > do at > that point. > > All the best, > Chris > -- > Christopher Samuel Senior Systems Administrator > VLSCI - Victorian Life Sciences Computation Initiative > Email: sam...@unimelb.edu.au <mailto:sam...@unimelb.edu.au> > Phone: +61 (0)3 903 55545 <tel:%2B61%20%280%293%20903%2055545> > http://www.vlsci.org.au/ http://twitter.com/vlsci > > _______________________________________________ > hwloc-users mailing list > hwloc-us...@open-mpi.org <mailto:hwloc-us...@open-mpi.org> > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-users > Link to this post: > http://www.open-mpi.org/community/lists/hwloc-users/2016/01/1251.php > > > > > -- > -Jianjun Wen > Wancube.com - 3D photography > Phone: 408 888 7023 > > > _______________________________________________ > hwloc-users mailing list > hwloc-us...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/hwloc-users > Link to this post: > http://www.open-mpi.org/community/lists/hwloc-users/2016/01/1252.php
