[Swift-user] control number of condor nodes?

[Allan Espinosa]

hi Glen,

How about setting the spread to be more uniform (like 0.1)?

-Allan
2010/6/24 Glen Hocky <hockyg at uchicago.edu>:
> Hey Everyone,
> Quick question. I'm testing on bg/p and things are working fine, but I can't
> seem to increase the number of nodes I'm using in the way I expect. I can
> run fine on 64 nodes tih
>>
>>     <filesystem provider="local"/>
>>
>>     <execution provider="coaster" jobmanager="local:cobalt"/>
>>
>>     <profile namespace="globus" key="queue">prod-devel</profile>
>>
>>     <profile namespace="globus" key="slots">1</profile>
>>
>>     <profile namespace="globus" key="nodeGranularity">64</profile>
>>
>>     <profile namespace="globus" key="workersPerNode">4</profile>
>>
>>     <profile namespace="globus" key="maxNodes">64</profile>
>>
>>     <profile namespace="globus" key="project">OOPS</profile>
>>
>>     <profile namespace="globus" key="kernelprofile">zeptoos</profile>
>>
>>     <profile namespace="globus" key="maxtime">3559</profile>
>>
>>     <profile namespace="globus" key="alcfbgpnat">true</profile>
>>
>>     <profile namespace="karajan" key="jobThrottle">2.55</profile>
>>
>>     <profile namespace="karajan" key="initialScore">100000</profile>
>>
>>     <scratch>/tmp</scratch>
>>
>>
>>  <workdirectory>/home/hockyg/reichman/glassy_dynamics/code/swift/work</workdirectory>
>
> I successfully went up to 256 nodes by increasing slots to 4 but I was
> unable to get a block of size 256.
> When I set maxnodes to 256, slots=1 , i get a block of size 128 regardless
> of several changes (and removal) of jobThrottle
> Any ideas on how to fine tune this, because I will certainly need to choose
> my number of jobs based on an expected ( max wall time * workers per node *
> number of nodes )
> Glen