Re: [HTCondor-users] AMD or INTEL

[Brian Candler <b.candler@xxxxxxxxx>]

> Thanks guys! I thought it might be buried in the classad somewhere.

FYI, a couple of ways you can do this.

(1) Write a script which checks the machine type (e.g. from /proc/cpuinfo as described) and returns "has_intel = True" or "has_amd = True". There is then a hook in condor where you can configure it to run this script periodically and update classads accordingly. See:

http://stackoverflow.com/questions/9864766/how-to-tell-condor-to-dispatch-jobs-only-to-machines-on-the-cluster-that-have

(2) I used ansible, a configuration management tool, which learned the CPU type as a "fact" from the target host, then used this to push out a config template which depended on this variable. In my case:

{% if "AMD Opteron(tm) Processor 6180 SE" in ansible_processor %}
#On AMD 12-core processors, comment out the COUNT_HYPERTHREAD_CPUS = False. See
#https://www-auth.cs.wisc.edu/lists/condor-users/2011-August/msg00005.shtml
#COUNT_HYPERTHREAD_CPUS = False
{% else %}
COUNT_HYPERTHREAD_CPUS = False
{% endif %}

but in a similar way you could statically add classAd info. This approach makes sense if you are going to use a centralised management tool anyway.

Regards,

Brian.