Here it was my solution:
# get the correct number of real CPUs (two quad-core processors)
CPU_NUM=`cat /proc/cpuinfo | grep cores | uniq | awk '{ print $4*2 }'`
# Retrieve the number of real CPUs on Ganglia
/opt/ganglia/bin/gmetric -t uint32 -s zero -n 'cpu_num' -v $CPU_NUM -u
'CPUs'
Thanks a lot!
-Hugo
On 10/14/10 6:22 PM, "Bernard Li" <bern...@vanhpc.org> wrote:
> Hi Hugo:
>
> On Tue, Oct 12, 2010 at 1:21 PM, Hernandez, Hugo (NIH/NIAID) [C]
> <hugo.hernan...@nih.gov> wrote:
>
>> I have some XEON 5560 compute nodes which have enabled hyperthreading. At
>> this point, the OS (RHEL 5.4) is reporting 16 Œcores¹ but we already have 8
>> per compute node. There is a way to force ganglia to report the number of
>> real CPUs instead of the number of Œvirtual+real¹ CPUs? Any help will be
>> greatly appreciated.
>
> Here's the Bugzilla entry which describes the issue you're encountering:
>
> http://bugzilla.ganglia.info/cgi-bin/bugzilla/show_bug.cgi?id=84
>
> And here's a possible workaround:
>
> http://forums.ganglia.info/viewtopic.php?f=4&t=8&sid=0417f3deeb9d6b1af72e92285
> fdd2017
>
> We should try to work out a solution though... any takers?
>
> Cheers,
>
> Bernard
--
Hugo R. Hernandez
--
"Si seus esforços, foram vistos com indefrença, não desanime, que o sol faze
un espectacolo maravilhoso todas as manhãs cuando a maior parte das pessoas,
ainda estam durmindo"
- Anónimo brasileiro
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