Folks,
Here's a script that might be useful for monitoring OS X clusters:
#!/bin/zsh
echo $HOST
ncpu=$(/usr/sbin/sysctl -n hw.ncpu)
vec=$(/usr/sbin/sysctl -n hw.vectorunit)
speed=$(/usr/sbin/sysctl -n hw.cpufrequency)
echo "CPUs: " $ncpu " Vector Unit: "$vec " Clock Speed: " $speed "Hz"
uptime | sed 's/^[ ]*//'
top -l2 1 | awk '{if (FNR==12) print "CPU Usage - user:" $(NF-5) " system:"
$(NF-3) " idle:" $(NF-1)}'
top -l1 0.1 | awk '{if (FNR==5) print "Memory: " $(NF-3) " " $(NF-2) " "
$(NF-1) " " $(NF)}'
(the last two lines wrap around)
On a cluster node, this will spit out something like:
xserve29
CPUs: 2 Vector Unit: 1 Clock Speed: 999999997 Hz
4:56PM up 6 days, 7:02, 1 user, load averages: 0.01, 0.01, 0.00
CPU Usage - user:0.0% system:1.9% idle:98.1%
Memory: 187M used, 1.32G free
(for vector unit, 1=yes 0=no)
Assuming the script is called something like "nodestat" and is in the bin in
my home space (accessible from all nodes), I'm calling it from the master
node like this:
#!/bin/zsh
for node in xserve{26..32}; do
echo ""
rsh $node bin/nodestat
done
Of course, you can tweak this a zillion ways. If I had a really large
cluster, I might have a single line of output per node.
I was able to wrap a GUI around this script using AppleScript Studio. You
can see what it looks like here:
http://members.cox.net/craig.hunter/clstat.jpg
This can also be tweaked a zillion different ways depending on your cluster
setup, and could even be generalized for arbitrary clusters if you had the
right interface design. I may see if I can come up with something for one
of our larger Linux clusters (50+ nodes), but right now it looks like a real
interface challenge! May be better to stick to the command line for large
clusters. I guess the main point is that it's relatively easy to make this
into a nice package.
I'd be glad to give out the source and project files if anyone would find it
useful.
Craig
--
Dr. Craig Hunter
NASA Langley Research Center
AAAC/Configuration Aerodynamics Branch
email@hidden
(757) 864-3020
(Dual G4 - OS X)
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