Hi,<div><br></div><div>I think you may have set NPROC_REP incorrectly. If you use a total of 1800 processors (with openmp threads = 1; mpiexec -np 1800 cp2k.psmp in > out), for example, NPROC_REP for 9 images should be 200. Get rid of the KPOINTS section, drop the smearing and mixing parts, and turn on OT. Change EXTRAPOLATION USE_GUESS to EXTRAPOLATION ASPC or PS with OT. Should run much quicker. I can't remember if CP2K treats the user supplied endpoints as frames in the number of replicas or if it's 2 + NUMBER_OF_REPLICA. Someone else can clarify or you can run a couple test calculations assuming you divide your total processor pool by 9 or 11 in setting NPROC_REP. If you kept the output files from your first attempt, you'll know based on how many bands were created.</div><div><br></div><div>-T<br><br></div><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Thursday, December 31, 2020 at 4:36:17 PM UTC-5 ti...@hotmail.com wrote:<br/></div><blockquote class="gmail_quote" style="margin: 0 0 0 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
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I'm currently learning how to run CI-NEB simulations, but I found that my NEB calculations were really slow. There's only one iteration finished in 23 hours. I tried to change some parameters including MAX_SCF and EPS_SCF, and remove the DFT-D3, but they didn't
help. I wonder if you know how to solve this kind of problem? My input file is attached below.</div>
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Thanks in advance!</div>
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Best,</div>
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Xiao Wang</div>
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