Hello,<div>you can't just optimize periodic graphene - you'll get graphite if it works correctly.</div><div>Better to just run single point calculations scanning the correct cell area in a 2D calculation. There is just the one cell parameter to adjust.</div><div>Matt<br><br></div><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Thursday, 30 June 2022 at 09:31:33 UTC+1 Anjali ganai 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;">Dear All,<div><br></div><div>I'm trying to run cell optimization for graphene but the job runs very slowly even after 300 steps the cell optimization hasn't completed.</div><div>I tried omitting a few things like PRESSURE_TOLERANCE and EXTERNAL _PRESSURE, but was of no help.</div><div>My graphene unit cell is cubic and contains two atoms.</div><div>It would be of great help if someone suggest me something on what things to change in the input file to get the cell optimization done.</div><div>(Input files attached)</div><div><br></div><div>Regards</div><div>Anjali</div></blockquote></div>
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