<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif;color:#000000">It is probably impossible for anyone to help you with so little information, beyond guesses which may be wrong.</div><div class="gmail_default" style="font-family:verdana,sans-serif;color:#000000"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;color:#000000">1) What information (errors) are in *.error, *.outputnlvdw, *.dayfile, :log ?</div><div class="gmail_default" style="font-family:verdana,sans-serif;color:#000000">2) What omp are you using? What mpi?</div><div class="gmail_default" style="font-family:verdana,sans-serif;color:#000000">3) What is the FFT size you are using, how much memory do you have?</div><div class="gmail_default" style="font-family:verdana,sans-serif;color:#000000"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;color:#000000">A guess; the FFT size is too large for your memory.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Feb 16, 2020 at 1:07 AM shamik chakrabarti <<a href="mailto:shamik15041981@gmail.com">shamik15041981@gmail.com</a>> 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">Dear Wien2k users,<div><br></div><div>                         I was trying to simulate structural optimization of an Li-Sn alloy using nlvdw functional 

<b>rev-vdW-DF2. </b>I have successfully used this functional for other simple structures like SnS2.<b> </b>However, I have encountered an error in the first cycle as "Error in NLVDW" this time. I have attached the struct file herewith this mail. </div><div><br></div><div>Looking forward to hearing from you. However, if any other information is required, please let me know. Thanks in advance.</div><div><br></div><div>with regards,</div><div><br>-- <br><div dir="ltr"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div style="font-size:small">Dr. Shamik Chakrabarti</div><div style="font-size:small">Research Fellow </div><div style="font-size:small">Department of Physics</div><div style="font-size:small">Indian Institute of Technology Patna</div><div style="font-size:small">Bihta-801103</div><div style="font-size:small">Patna</div><div style="font-size:small">Bihar, India</div></div></div></div></div></div></div></div></div></div>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr">Professor Laurence Marks<br>Department of Materials Science and Engineering<br>Northwestern University<br><a href="http://www.numis.northwestern.edu/" target="_blank">www.numis.northwestern.edu</a><div>Corrosion in 4D: <a href="http://www.numis.northwestern.edu/MURI" target="_blank">www.numis.northwestern.edu/MURI</a><br>Co-Editor, Acta Cryst A<br>"Research is to see what everybody else has seen, and to think what nobody else has thought"<br>Albert Szent-Gyorgi</div></div></div>