Re: [Condor-users] Core detection - AMD 6180 SE

[Brian Candler <B.Candler@xxxxxxxxx>]

On Tue, Aug 07, 2012 at 10:07:24AM -0500, Nick LeRoy wrote:
> Can you send the full /proc/cpuinfo?  The code that counts the number of CPUs 
> uses a number of hueristics, and it probably needs another small tweak.  I'm 
> not on the Condor team any longer, but I wrote the above code, and I could 
> probably fix this pretty easily.

Attached are:
* full /proc/cpuinfo
* extract from dmidecode
* condor_config_val output

However I'm not sure that /proc/cpuinfo by itself is sufficient. The
previous post linked to 
https://groups.google.com/forum/?fromgroups#!topic/linux.kernel/PzkEUWN05iw
where a proposed kernel change to /proc/cpuinfo was rejected.

One poster said:

"you can't get this info from /proc/cpuinfo output. But
/proc/cpuinfo is completely useless to gather entire toplogy
information anyway.  You should extract most stuff from the topology
subdirectory for CPUs."

Here's an example of what I see under /sys:

$ ls /sys/devices/system/cpu/
cpu0   cpu16  cpu23  cpu30  cpu38  cpu45  cpufreq     release
cpu1   cpu17  cpu24  cpu31  cpu39  cpu46  cpuidle     sched_mc_power_savings
cpu10  cpu18  cpu25  cpu32  cpu4   cpu47  kernel_max
cpu11  cpu19  cpu26  cpu33  cpu40  cpu5   offline
cpu12  cpu2   cpu27  cpu34  cpu41  cpu6   online
cpu13  cpu20  cpu28  cpu35  cpu42  cpu7   possible
cpu14  cpu21  cpu29  cpu36  cpu43  cpu8   present
cpu15  cpu22  cpu3   cpu37  cpu44  cpu9   probe
$ ls -l /sys/devices/system/cpu/cpu0/
total 0
drwxr-xr-x 6 root root    0 Aug  7 12:40 cache
drwxr-xr-x 3 root root    0 Aug  7 16:21 cpufreq
-r-------- 1 root root 4096 Aug  7 16:15 crash_notes
lrwxrwxrwx 1 root root    0 Aug  7 16:15 node0 -> ../../node/node0
drwxr-xr-x 2 root root    0 Aug  7 12:40 topology
$ head /sys/devices/system/cpu/cpu0/topology/*
==> /sys/devices/system/cpu/cpu0/topology/core_id <==
0

==> /sys/devices/system/cpu/cpu0/topology/core_siblings <==
00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000fff

==> /sys/devices/system/cpu/cpu0/topology/core_siblings_list <==
0-11

==> /sys/devices/system/cpu/cpu0/topology/physical_package_id <==
0

==> /sys/devices/system/cpu/cpu0/topology/thread_siblings <==
00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000001

==> /sys/devices/system/cpu/cpu0/topology/thread_siblings_list <==
0

There is also /sys/devices/system/node[0-7]/ with 6 cpus under each.

Regards,

Brian.

Attachment: cpuinfo.gz
Description: application/gunzip

Attachment: dmidecode.gz
Description: application/gunzip

Attachment: condorval.gz
Description: application/gunzip