<DIV>>Message: 6<BR>>Date: Fri, 16 Oct 2009 08:18:35 +0200 (CEST)<BR>>From: "Lorenzo Paulatto" <paulatto@sissa.it><BR>>Subject: Re: [Pw_forum] Pw_forum Digest, Vol 28, Issue 38<BR>>To: "PWSCF Forum" <pw_forum@pwscf.org><BR>>Message-ID: <48411.78.12.170.175.1255673915.squirrel@webmail.sissa.it><BR>>Content-Type: text/plain;charset=iso-8859-1<BR>><BR>><BR>>On Fri, October 16, 2009 03:24, Q.J.Wang wrote:<BR>>> The problem is when I redo the relaxation ,the value of 'Total force'and<BR>>> the 'P' become large in every bfgs cycle .And at last shows error :<BR>><BR>>I see. Apart from a wacky initial configuration (you should check with<BR>>xcrysden..) I suspect you might have used the same outdir and prefix for<BR>>the two calculations, this usually produces some funny problems, can you<BR>>check?</DIV>
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<DIV>According to your advice ,I checked the initial configuration with xcrysden ,there is no problem about the initia configuration .The outdir and prefix I used also not the same in the two caculations .<BR></DIV>
<DIV><BR>>regards<BR>><BR>><BR>>-- <BR>>Lorenzo Paulatto<BR>>SISSA & DEMOCRITOS (Trieste)<BR>>phone: +39 040 3787 511<BR>>skype: paulatz<BR>>www: http://people.sissa.it/~paulatto/<BR>><BR>><BR>><BR>>----------------------------------------------------------------<BR>> SISSA Webmail https://webmail.sissa.it/<BR>> Powered by SquirrelMail http://www.squirrelmail.org/<BR>><BR>><BR>><BR>>------------------------------<BR>><BR>>Message: 7<BR>>Date: Fri, 16 Oct 2009 08:30:47 +0200<BR>>From: Paolo Giannozzi <giannozz@democritos.it><BR>>Subject: Re: [Pw_forum] Pw_forum Digest, Vol 28, Issue 38<BR>>To: PWSCF Forum <pw_forum@pwscf.org><BR>>Message-ID: <12DAC9A4-4846-4DBC-926B-6855066F67D5@democritos.it><BR>>Content-Type: text/plain; charset=US-ASCII; format=flowed<BR>><BR>><BR>>On Oct 16, 2009, at 3:24 , Q.J.Wang wrote:<BR>><BR>>> pot_extrapolation = 'second_order' ,<BR>>> wfc_extrapolation = 'second_order'<BR>><BR>>these are useless for structural optimizaton</DIV>
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<DIV>OK ,Let me have a try .</DIV>
<DIV><BR>>---<BR>>Paolo Giannozzi, Dept of Physics, University of Udine<BR>>via delle Scienze 208, 33100 Udine, Italy<BR>>Phone +39-0432-558216, fax +39-0432-558222<BR></DIV><br><br><span title="neteasefooter"/><hr/>
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