[QE-users] Possible problems of using "memory = 'small'"

[Paolo Giannozzi]

Once upon the time, the only limitation of 'memory="small"' was the 
impossibility to read data produced with N processors on M processors, 
if M != N (where N and M are actually "processors used for plane-wave 
parallelization"). This should still hold (no warranty).

Paolo

On 6/21/22 12:40, Lenz Fiedler wrote:
> Hi users,
> 
> I hope this is not a duplicate, but I am trying to work with a big cell 
> and am running into memory issues. I tracked the issues (partially) down 
> to ggen, and found that by setting "memory" to "small" (as suggested in 
> the comments in the code) the problems disappeared, because the 
> no_global_sort was now set to true.
> 
> My question now is: are there any known limitations to this? Anything 
> one should be careful about when using "memory = 'small'" or can I just 
> use it whenever?
> 
> Kind regards,
> 
> Lenz Fiedler, M. Sc.
> PhD Candidate | Matter under Extreme Conditions
> 
> Tel.: +49 3581 37523 55
> E-Mail: l.fiedler at hzdr.de
> https://www.casus.science
> 
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> 
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> 
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-- 
Paolo Giannozzi, Dip. Scienze Matematiche Informatiche e Fisiche,
Univ. Udine, via delle Scienze 206, 33100 Udine, Italy
Phone +39-0432-558216, fax +39-0432-558222