Maybe it doesn't help since I don't remember if the lapw1 memory usage is larger than lapw2 or not. However, I have found "x lapw1 -nmat_only" helpful for estimation in the past:

https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg08136.html


On 7/26/2019 2:27 AM, Luc Fruchter wrote:
Yes, I have shared memory. Swap on disk is disabled, so the system must manage differently here.

I just wonder now: is there a way to estimate the memory needed for the lapw2s, without running scf up to these ? Is this the total .vector size ?
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