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I am trying to perform elastic tensor calculations for two structures but the calculations don't complete before I hit the 48h walltime limit on my HPC (knowing that IBRION=6 calculations cannot be restarted). I have attached the input files for the two structures - are there any changes that could be made to reduce calculation time?

Thanks,

Will

Dear Will,

Since your systems are relatively large, could you provide me with the OUTCAR files so that I can see where VASP is taking too long? It will help me with figuring out a possible solution.

Kind regards,
Pedro

I've attached an edited version of the OUTCAR for U2N3 to meet attachment memory limits. I am rerunning the U2C3 calculation so I do not have the original OUTCAR, but hopefully the U2N3 OUTCAR is representative of both cases.