<div>Hello Ramanish,</div><div><br /></div><div>Thank you for your suggestion. You are correct; I switched to the LAMMPS software and was able to obtain results for classical MD simulations. <br /></div><div><br /></div><div>Thanks and regards,</div><div>Sucharita<br /></div><br /><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Friday, 28 July 2023 at 13:04:11 UTC-5 sing...@umn.edu 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;"><div>Hi Sucharita, <br></div><div><br></div><div>Is there a specific reason you want to use CP2K for classical MD? Because there are other software such as LAMMPS, GROMACS, HOOMD etc. which are more suitable for classical MD. <br></div><div>For generating initial systems you can check out mbuild (<a href="https://mbuild.mosdef.org/en/stable/" target="_blank" rel="nofollow" data-saferedirecturl="https://www.google.com/url?hl=en-GB&q=https://mbuild.mosdef.org/en/stable/&source=gmail&ust=1691074363053000&usg=AOvVaw19rmX5r2hl62ztGeJPC34_">https://mbuild.mosdef.org/en/stable/</a>) and packmol (<a href="https://m3g.github.io/packmol/" target="_blank" rel="nofollow" data-saferedirecturl="https://www.google.com/url?hl=en-GB&q=https://m3g.github.io/packmol/&source=gmail&ust=1691074363053000&usg=AOvVaw2NIprD1boZMnJltXnGftGX">https://m3g.github.io/packmol/</a>). <br></div><div>The force field file template will depend on the software you choose for your MD simulations. If you just want to do classical MD, I would recommend using the software I have mentioned above. <br></div><div><br></div><div>Best,</div><div>Ramanish<br></div><br><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Monday, July 24, 2023 at 4:44:47 PM UTC-5 Sucharita Giri 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"><div>Hello,</div><div><br></div><div>I am a new user of cp2k and want to simulate classical MD of liquid systems. I have few doubt:</div>1. How do I obtain/create the system's initial geometry?<br><div>2. How can I create a forcefield file? (If I have the parameters from a journal or if this data is not available) </div><div><br></div><div>I have completed a few assignments on the website but would like to create the input file from scratch. It would be extremely great if someone could offer me with useful sources.</div><div><br></div><div>Thanks in advance,</div><div>Sucharita<br></div></blockquote></div></blockquote></div>
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