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Convergence problems


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  • From: Eduardo Cruz Silva <ecruz@ipicyt.edu.mx>
  • To: forum@abinit.org
  • Subject: Convergence problems
  • Date: Tue, 10 May 2005 10:23:04 -0500

Hi Everybody!!

I'm a new user of ABINIT, and after some weeks of using the code, now I
have arrived to a severe problem (well, that's what I think of it)

I'm currently working on 1dimensional systems, and I have managed to
converge the calculation of the total Energy to a good value and relax
the structure, but when I start with response function calculations, I
get a convergence error using CG energy minimization (the code stops
after 13 restarts).

I read the FAQ and changed iscf to 3, which is described as safer but
slower, however, this caused a divergence of the 2DEt. Finally, I've
tried iscf=2, but it didn't work anyways. Can you make any suggestion
in this case?

attached are the input files.

Thank you all for your time!

Attachment: input.tar
Description: Unix tar archive




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