<div dir="ltr">Hi Marcella,<div><br></div><div>I expressed it badly, I want to say that each displaced atomic configuration needs an energy+gradient calculation, this is 6N energy+gradient evaluations, plus the minimum energy geometry. Of course the number of output files is equal to the replica layout, but my problem is that the number of energy+gradient evaluations into all these replica outputs is not equal to 6N.</div><div>A practical example, I have an 8 atom isolated molecule, so it needs 48 energy+gradient evaluations which are printed in the main output correctly. I launched this calculation in a node with 20 cores, so the replica layout is 20 and there are 20 output files. When I see these output files I check there are 5 energy computations into each output, so there are 5*20=100 energy evaluations. This is the point which makes me worried. I do not understand why there are that huge amount of energy evaluations when 6N=48. </div><div><br></div><div>Regards - Lucas</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">El mié, 12 oct 2022 a las 4:51, Marcella Iannuzzi (<<a href="mailto:marci.akira@gmail.com">marci.akira@gmail.com</a>>) escribió:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br>Hi Lucas<div><br></div><div>The number of output files of the type ${projectname}-r-#.out</div><div>should be equal to REPLICA| layout of the replica grid, number of groups</div><div>and not to 6N</div><div><br></div><div>Kind regards</div><div>Marcella</div><div><br></div><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Wednesday, October 12, 2022 at 12:35:08 AM UTC+2 Lucas Lodeiro wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><div dir="ltr">Hello all,<div><br></div><div>I have a detailed doubt about the files and data printed for a vibrational analysis. AFAIK, the calculation is done by numerical differentiation of gradients (differentiation in both directions and average them) so for a molecule with N atoms it needs 6N calculations, which is clearly printed in the main output. Also, each replica/configurationn (6N) is computed and a particular output is printed for each one.</div><div>Up to this point everything looks fine, but when I see the particular replica output, there are 5 energy computations into the output... I would expect just one.</div><div>Why is this happening? Am I missing something?</div><div><br></div><div>Regards - Lucas</div></div></div></div>
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