There are two categories of methods: detected or defined. Now I think detected might be possible with Maui, but I don't know how to do it. Defined, I know how to do. It looks like you were on the right track with that with PBS. In PBS terms, resources and properties are somewhat the same thing. What you specify as a property in qmgr, you specify as a resource to qsub. So your qsub line should be:
qsub -l nodes=1:ppn=1:512mb filename
Where 512mb is simply recognized as a string. Keep in mind also that you can add multiple properties to a node, but using "+=" instead of "=" on the qmgr command line. If you're making a lot of changes, it may be simpler to just edit the ascii file where this configuration is stored: /var/spool/pbs/server_priv/nodes You will have to restart the pbs_server service after saving the file though (go through qmgr if you don't want to restart the server).
As far as specifying multiple resources to match on the qsub line, you'll have to hit the manual- I can't remember that off the top of my head, but I think it's possible.
Jeremy
At 10:23 AM 10/8/2003, Benjamin Simmons wrote:
TIA for all who can provide some light onto this!!!!!
I have a cluster that is up and working with OSCAR 2.2.1 that has a very heterogeneous mixture of processor speeds.
I want to make the scheduler a bit more informed about the nodes. I see an item in the feature requests that discusses adding information about the speed of the node and about the memory in each node automatically in a script. How does one do this manually. I have been reading man pages and help files for a while now, and am no closer to adding this information into the pbs queue or maui config files. I see in either pbs or maui, I should be able to specify information about the RAM or computer speed. I am failing to actually get the information into the right spots.
for pbs I am running qmgr and typing the following command to set the amount of memory
set node nodename.domain.name.edu properties="512mb"
I think this is the wrong command, it just adds the memory as property of the node and does not add it to the resource list. I want to be able to specify something like the following line to request a specific family of nodes out of my cluster.
qsub -l nodes=1:ppn=1,mem=512mb filename
Alternately if I can specify in the Maui config file the relative speed of a node ( on http://www.supercluster.org/mauidocs/12.2nodeattributes.shtml I see that you can set the relative speed of a node from 0.01 to 100) This setting would also work as it would be more transparent to the end user.
I am open to any and all suggestions, and will share the answer I come up with here.
Any thoughts or points to info would be appreciated.
Thanks, Ben Simmons The University of Memphis Mechanical Engineering
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