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Author Topic: method to reduce memory in ldos?  (Read 2649 times)

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Offline esp

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method to reduce memory in ldos?
« on: September 8, 2012, 10:25 »
i had an ldos calc quit on a linux machine due to "memory error" .. so I am wondering, which settings can I tweak to reduce the memory usage?  it is the number of history steps that is causing it (i think i have it at 20)?  .. what can i try please?  the configuration has at least a few hundred atoms (graphene of length 12nm), so it takes over 12 hours to run, so i want to try to reduce time with trial and error
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Offline Anders Blom

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Re: method to reduce memory in ldos?
« Reply #1 on: September 8, 2012, 14:48 »
Well, it depends where it runs out, if it's in the self-consistent loop or afterwards in the actual LDOS evaluation. History steps do make up some of the peak usage but is only relevant during the loop.
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