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Re: [abinit-forum] alternative to tolmxf


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  • From: Josef Zwanziger <jzwanzig@gmail.com>
  • To: forum@abinit.org
  • Subject: Re: [abinit-forum] alternative to tolmxf
  • Date: Wed, 29 Apr 2009 10:32:40 -0300
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Dear Christian,

what would it mean to relax a structure without relaxing the forces?
What value of tolmxf are you using? If you really don't care about
getting a highly accurate structure, you could simply set tolmxf to a
coarse value (1.0D-4 say).

On Wed, Apr 29, 2009 at 10:13 AM, <ludwigc@uni-mainz.de> wrote:
> I am trying to relax a structure and observe the following: while the total
> energy is stable pretty quickly, the forces fluctuate for some time, which
> prevents a quick convergence. Since the total energy is the only value I am
> interested in, it would be nice to set a convergence criterion analogous to
> toldfe for the Broyden steps. Is this somehow possible? I found nothing in
> the
> list of input variables.
>
> Christian
>



--
Josef W. Zwanziger
Professor of Chemistry
Canada Research Chair in NMR Studies of Materials
Director, Atlantic Region Magnetic Resonance Centre
Dalhousie University
Halifax, NS B3H 4J3 Canada
tel: +1 (902) 494-1960
fax: +1 (902) 494-1867
web: http://jwz.chem.dal.ca
jzwanzig@gmail.com, jzwanzig@dal.ca



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