[Pw_forum] Resource usage on Single CPU vs MPI

[Nicola Marzari]

si.scf.in should take at most a few seconds to execute.

			nicola


Charles Chen wrote:
> Dear pwscf users,
> 
> I am using CVS2 on IA64+linux cluster, complied with MPICH.
> 
> I can have some tutorial sample (si.scf.in) done but frequently get
> warning from our administrator on using too much resources.
> 
> Is this difference reasonable?
> 
> Here is the resources usage excerpt from the output file:
> 
> for single processor:
> 
>> Resource usage summary:
>>
>>     CPU time   :   1680.30 sec.
>>     Max Memory :         4 MB
>>     Max Swap   :        12 MB
>>
>>     Max Processes  :         1
>>     Max Threads    :         1
> for two processors used:
>> Resource usage summary:
>>
>>     CPU time   :  11781.85 sec.
>>     Max Memory :       110 MB
>>     Max Swap   :     59562 MB
>>
>>     Max Processes  :         6
>>     Max Threads    :         6
> Thanks!
> 
> Charles Chen
> 


-- 
---------------------------------------------------------------------
Prof Nicola Marzari   Department of Materials Science and Engineering
13-5066   MIT   77 Massachusetts Avenue   Cambridge MA 02139-4307 USA
tel 617.4522758 fax 2586534 marzari at mit.edu http://quasiamore.mit.edu