I run ganglia on a mixed cluster of:
IA32: RedHat and MSC.Linux
Itanium: RedHat (single CPU's)
Itanium-2: MSC.linux (single and dual CPU's)
The cpu_num is correct. I agree with Steve,
Can you find out which box is off?
I am only posting to state that, at
least on my system, Ganglia reports
the correct number of CPUs on an
Itanium-2.
BTW - I am running 2.5.1.
Joe
Steven Wagner wrote:
Hi Jason,
Assuming that Itanium gmond uses gmond/machines/linux.c, the number of
CPUs is retrieved using the glibc call "get_nprocs()" with the
remainder of the CPU info parsed from /proc/cpuinfo. You may want to
check the source.
If you grep the gmond output (telnet one-of-your-monitoring-core-hosts
8649) for "cpu_num" you should be able to find out which one's
reporting the number of CPUs properly. :)
I don't know if we've got anybody doing ganglia development in an MP
Itanium environment. I don't recall any mention of it on the
developer list, anyway...
Since it's a glibc call, that implies this could be happening
elsewhere... I'm guessing it isn't but just in case, you may want to
check /proc/cpuinfo and your dmesg output to see if both processors
are being reported by the kernel.
[or 'all four,' if you're using a hyperthreading-enabled processor...
can't remember offhand whether the I2 is or not ... ]
Good luck...
Jason Holland wrote:
Hi,
I'm currently running ganglia 2.5.1 on an Itanium2 cluster to monitor
the nodes. The nodes are hp zx6000 workstations with dual 900 mhz
itanium2 cpu's. Ganglia is reporting an incorrect number of cpu's. For
the 24 workstations we have online right now, its reporting 25
cpu's. Has
anyone seen this before? How does ganglia determine this number? From
/proc? btw, we are running RedHat Advanced Workstation 2.1. Thanks
Jason P Holland
Texas Learning and Computation Center
http://www.tlc2.uh.edu
University of Houston
Philip G Hoffman Hall rm 207A
tel: 713-743-4850
cell: 281-451-5991
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