[DFTB-Plus-User] ​Re: Failure in diagonalisation routine ZHEEVR for Li-S systems

Bálint Aradi aradi at uni-bremen.de
Wed Nov 16 08:32:58 CET 2022


Dear Qisheng Wu,

Probably your system is very much on the edge of diagonalizability (if 
such a word exists...), and the two different DFTB+ versions use 
different LAPACK implementation with slightly different diagonalizer / 
Cholesky-decomposer numerics, leading to different results. When putting 
very "big" and very "small" elements in a tightly packed solid, basis 
dependence can become an issue. Usually, decreasing/increasing the basis 
function extend of the big/small element can help to resolve the issue.

Best regards,

Bálint



On 14.11.22 17:34, Wu, Qisheng wrote:
> Dear Martin,
> 
> Thanks a lot for the comments. Here are my replies:
> 
> I checked the skf.aux file, it shows "NotOrbitalResolved".
> 
> I believe the geometry optimizations in both standalone DFTB+ code and 
> MS are working properly. The error actually occurred at the very initial 
> step, so it has nothing to do with geometry optimizations. The error 
> also occurred when doing single-point energy calculations.
> 
> For the fitting, I followed the procedure reported in a previous work 
> (https://doi.org/10.1021/acs.jpcc.8b01839 
> <https://doi.org/10.1021/acs.jpcc.8b01839>) conducted in our group (Yue 
> Qi group @ Brown Univ.), in which the parameters were fitted as an 
> extension of the mio set with the MS parameterization tools. In that 
> work, systematic validations were presented for the Li-containing 
> systems, including Li metal, Li-containing inorganic crystals (LiH, 
> Li2O, and Li2CO3), molecular species (LiOH, LiCH3, et al.), and some 
> surface and interface systems. Those fitted parameters (both the 
> electronic parameters of Li and the repulsive potentials) worked 
> very well. At that time, there was no LIB 2019 yet. I do not want to 
> make too many changes while trying to extend the parameterization set to 
> include S and maybe also other elements.
> 
> For band structure validations of li metal and Li2S bulk, please see the 
> figure attached or through the following link:
> https://drive.google.com/file/d/1LSmYELMtIBQBlOlXgZjnACHUv208EnxU/view?usp=share_link <https://drive.google.com/file/d/1LSmYELMtIBQBlOlXgZjnACHUv208EnxU/view?usp=share_link>
> 
> In my new fitting, the electronic parameters are slightly revised 
> compared to what was reported in our previous work 
> (https://doi.org/10.1021/acs.jpcc.8b01839 
> <https://doi.org/10.1021/acs.jpcc.8b01839>), but you can see that the 
> band structures near the Fermi level of Li metal are still well 
> reproduced. The band structures of the valence bands of Li2S calculated 
> with DFTB agree with Dmol3 calculations as well.
> 
> I did not use dispersion correction while calculating the band 
> structures with DFTB and Dmol3 in MS. I tested on dispersion correction 
> (LJ, UFF parameters) while doing geometry optimizations with the 
> standalone DFTB+ code, and found that it makes little difference.
> 
> Thanks again for your time.
> 
> Best regards,
> Qisheng Wu
> 
> 
> On Fri, Nov 11, 2022 at 5:05 AM 
> <dftb-plus-user-request at mailman.zfn.uni-bremen.de 
> <mailto:dftb-plus-user-request at mailman.zfn.uni-bremen.de>> wrote:
> 
>     -----------------------------
> 
>     Message: 2
>     Date: Fri, 11 Nov 2022 10:04:42 +0000
>     From: PERSSON Martin <Martin.PERSSON at 3ds.com
>     <mailto:Martin.PERSSON at 3ds.com>>
>     To: User list for DFTB+ related questions
>              <dftb-plus-user at mailman.zfn.uni-bremen.de
>     <mailto:dftb-plus-user at mailman.zfn.uni-bremen.de>>
>     Subject: Re: [DFTB-Plus-User] Failure in diagonalisation routine
>              ZHEEVR for Li-S systems
>     Message-ID: <1c5596207e8348d49f887df843c9c81a at 3ds.com
>     <mailto:1c5596207e8348d49f887df843c9c81a at 3ds.com>>
>     Content-Type: text/plain; charset="utf-8"
> 
>     Dear Qisheng Wu,
> 
>     If you extended the MIO library “OrbitalResolvedScc” should be set
>     to “No”. The MS DFTB+ parameterization tools ensure that these type
>     of settings are consistent when you extend parameters. You can what
>     settings should be used in the skf.aux file in the library.
> 
>     MS has its own drivers for Geometry optimization, Dynamics etc. so
>     the optimizer likely takes a different path to the optimized geometry.
>     Even though the MS 2020 version of DFTB+ is older it uses the same
>     eigenvalue solvers. The only difference I noticed when updating was
>     that we got slightly different geometries and dynamics results since
>     the force evaluation has been updated, but those differences was
>     very small.
> 
>     When you did the optimization did you fit the electronic settings
>     for Li to the Li band structure using the scripted tools in MS?
>     Have you checked the band structure for the Li2S and did you run
>     with or without dispersion correction?
> 
>     Finally why did you extend the mio library? I think the “LIB 2019”
>     library, containing Li-C-H-N-O-P-F, is available in MS 2020. It was
>     mainly fitted and validated against small molecules so I can’t make
>     promises about how it will perform for solids. But then so was mio.
> 
>     Best Regards,
>     Martin PERSSON
>     BIOVIA Scientific R&D Development Manager
> 
>     Dear Dr. Aradi,
> 
>     Thanks for your comment, but adding ShellResolvedScc = Yes does not
>     solve the problem (DFTB+ 22.1).
> 
>     Adding OrbitalResolvedScc = Yes to simulation with DFTB+ 17.1 does
>     not solve the problem as well.
> 
>     In terms of the version of DFTB+ in Materials Studio 2020, here is
>     the reply from people who work for Dassault Systemes:
> 
>     "It is a modified version of the  r4729 version of the DFTB+ code.
>     It's from 2015. There is a few years gap in the updates of DFTB+
>     since their rewrite of the code did not support all the features
>     that were exposed in the MS version. The current release of MS has
>     an up to date version of DFTB+."
> 
>     I will also ask them to see if they can help solve this problem.
>     Thanks again.
> 
>     Best regards,
>     Qisheng Wu
> 
> 
>     On Wed, Nov 9, 2022 at 4:52 AM Bálint Aradi <aradi at uni-bremen.de
>     <mailto:aradi at uni-bremen.de><mailto:aradi at uni-bremen.de
>     <mailto:aradi at uni-bremen.de>>> wrote:
>     The only difference I can see, is that you commented out
>     OrbitalResolvedScc in your input (which was changed to ShellResolvedScc
>     at some point). That would be important to add to get similar results as
>     with MS.
> 
>     As for periodic versus non-periodic: The overlap of the basis functions
>     is in the periodic case bigger, so if your system is on the edge of
>     having a linearly dependent basis set, chances are bigger, that you get
>     a problem in the periodic case.
> 
>     Cheers,
> 
>     Bálint
> 
> 
>     On 08.11.22 15:37, Wu, Qisheng wrote:
>      > Dear Dr. Bálint Aradi,
>      >
>      > Many thanks for the quick reply. You are right that the S is
>     supposed to
>      > be with "d" as the maximal angular shell in the mio-set. I made the
>      > change and re-run the geometry optimizations. Unfortunately, this
>     does
>      > not solve the problem. For the Li2S molecule, It turns out that
>     it makes
>      > very little difference in terms of Li-S bond length (2.005
>     angstroms vs
>      > 2.002 angstroms). But of course, "d" still should be used anyway.
>      >
>      > I have also looked at the input file generated within MS and
>     attached it
>      > to this email (Li2S_tetra.hsd). The version of DFTB+ in MS 2020
>     might be
>      > different (I do not know what version it is), and there are some
>      > keywords that I did not previously use in my input. The Driver
>     section
>      > is also empty, whose possible reason is that MS uses its own
>     driver to
>      > conduct geometry optimizations (it's just my guess). After
>     tailoring my
>      > own inputs based on what I found in the input from MS (dftb_in.hsd as
>      > attached), I was still not able to solve the problem.
>      >
>      > What I do not understand is that the calculation works for the Li2S
>      > molecule but not for the Li2S bulk. It's really puzzling. I hope this
>      > issue could be fixed in the end.
>      >
>      > By the way, I have tested using different versions of DFTB+ (e.g.,
>      > 17.1), and the same error showed up for geometry optimization of the
>      > Li2S bulk, but not for the Li2S molecule.
>      >
>      > Thanks again.
>      >
>      > Best regards,
>      > Qisheng Wu
>      >
>      >
>      > On Tue, Nov 8, 2022 at 6:00 AM
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>      >     Today's Topics:
>      >
>      >         1. Re: Failure in diagonalisation routine ZHEEVR for Li-S
>      >            systems (Bálint Aradi)
>      >
>      >
>      >   
>       ----------------------------------------------------------------------
>      >
>      >     Message: 1
>      >     Date: Mon, 7 Nov 2022 16:12:28 +0100
>      >     From: Bálint Aradi <aradi at uni-bremen.de
>     <mailto:aradi at uni-bremen.de><mailto:aradi at uni-bremen.de
>     <mailto:aradi at uni-bremen.de>> <mailto:aradi at uni-bremen.de
>     <mailto:aradi at uni-bremen.de><mailto:aradi at uni-bremen.de
>     <mailto:aradi at uni-bremen.de>>>>
>      >     To: dftb-plus-user at mailman.zfn.uni-bremen.de
>     <mailto:dftb-plus-user at mailman.zfn.uni-bremen.de><mailto:dftb-plus-user at mailman.zfn.uni-bremen.de <mailto:dftb-plus-user at mailman.zfn.uni-bremen.de>>
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>      >     Subject: Re: [DFTB-Plus-User] Failure in diagonalisation routine
>      >              ZHEEVR for Li-S systems
>      >     Message-ID:
>     <8d8e2f4f-6368-a719-f281-d263b107c054 at uni-bremen.de
>     <mailto:8d8e2f4f-6368-a719-f281-d263b107c054 at uni-bremen.de><mailto:8d8e2f4f-6368-a719-f281-d263b107c054 at uni-bremen.de <mailto:8d8e2f4f-6368-a719-f281-d263b107c054 at uni-bremen.de>>
>      >     <mailto:8d8e2f4f-6368-a719-f281-d263b107c054 at uni-bremen.de
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>      >     Content-Type: text/plain; charset="utf-8"; Format="flowed"
>      >
>      >     Dear Qisheng Wu,
>      >
>      >     The DFTB+ in MS is identical to the open source version,
>     therefore,
>      >     I am
>      >     a little bit puzzled, why you get different behavior for the bulk
>      >     calculation.
>      >
>      >     Check, whether the dftb+ input file generated by MS is
>     equivalent to
>      >     yours. My guess would be the maximal angular momenta.
>     Actually, in the
>      >     mio-set the S is supposed to be with "d" as maximal angular
>     shell (and
>      >     you use "p" instead). Also probably MS uses only "s" for the
>     Li and not
>      >     "p" as in your input?
>      >
>      >     Best regards,
>      >
>      > Bálint
>      >
>      >
>      >     On 07.11.22 15:47, Wu, Qisheng wrote:
>      >      > Dear DFTB+ developers,
>      >      >
>      >      > I am currently working on a Li-S system and fitted Li-Li
>     and L-S
>      >      > parameters as an extension of the /mio/ set using the DFTB+
>      >     module and
>      >      > parameterization tools as implemented in the Materials Studio
>      >     software.
>      >      > S-S is directly taken from the /mio/ set. To verify the
>      >     parameters, I
>      >      > first conducted geometry optimizations of Li2S bulk and Li2S
>      >     molecule,
>      >      > which ran very well through the DFTB+ module in the
>     Materials Studio
>      >      > software.
>      >      >
>      >      > Then I switched to DFTB+ 22.1 code (precompiled executable for
>      >     x86_64),
>      >      > which I will need to use for large-scale simulations. The
>     geometry
>      >      > optimization of the Li2S molecule worked very well, but
>     that of
>      >     the L2S
>      >      > bulk failed, with the error information:
>      >      >
>      >      > "-> Failure in diagonalisation routine ZHEEVR, unable to
>     complete
>      >      > Cholesky factorization of B     85"
>      >      >
>      >      > I checked some previous messages in this email list, and
>     am aware
>      >     that
>      >      > this could be due to unphysical geometry. But I do not
>     think this
>      >     is the
>      >      > case for my simulation since it worked well at least for
>     the Li2S
>      >     molecule.
>      >      >
>      >      > I appreciate it if anyone can help address this issue,
>     which will be
>      >      > very helpful for me to continue my research project. I
>     have put
>      >     all the
>      >      > inputs (dftb_in.hsd), outputs (out), and parameter files
>     (*skf)
>      >     in my
>      >      > google drive. Feel free to download that using the link below:
>      >      >
>      >      >
>      >
>     https://drive.google.com/file/d/1LL8GHzfI8pH4Nlr2ZJ8IN4q3xTVpQmy1/view?usp=share_link <https://drive.google.com/file/d/1LL8GHzfI8pH4Nlr2ZJ8IN4q3xTVpQmy1/view?usp=share_link> <https://drive.google.com/file/d/1LL8GHzfI8pH4Nlr2ZJ8IN4q3xTVpQmy1/view?usp=share_link <https://drive.google.com/file/d/1LL8GHzfI8pH4Nlr2ZJ8IN4q3xTVpQmy1/view?usp=share_link>> <https://drive.google.com/file/d/1LL8GHzfI8pH4Nlr2ZJ8IN4q3xTVpQmy1/view?usp=share_link <https://drive.google.com/file/d/1LL8GHzfI8pH4Nlr2ZJ8IN4q3xTVpQmy1/view?usp=share_link> <https://drive.google.com/file/d/1LL8GHzfI8pH4Nlr2ZJ8IN4q3xTVpQmy1/view?usp=share_link <https://drive.google.com/file/d/1LL8GHzfI8pH4Nlr2ZJ8IN4q3xTVpQmy1/view?usp=share_link>>>
>      >      >
>      >      > Best regards,
>      >      > Qisheng Wu
>      >      >
>      >      > _______________________________________________
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>      >      >
>      >
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>      >
>      >     --
>      >     Dr. Bálint Aradi
>      >     Bremen Center for Computational Materials Science, University
>     of Bremen
>      > http://www.bccms.uni-bremen.de/cms/people/b-aradi/
>     <http://www.bccms.uni-bremen.de/cms/people/b-aradi/>
>      >     <http://www.bccms.uni-bremen.de/cms/people/b-aradi/
>     <http://www.bccms.uni-bremen.de/cms/people/b-aradi/>>
>      >
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>     --
>     Dr. Bálint Aradi
>     Bremen Center for Computational Materials Science, University of Bremen
>     http://www.bccms.uni-bremen.de/cms/people/b-aradi/
>     <http://www.bccms.uni-bremen.de/cms/people/b-aradi/>
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-- 
Dr. Bálint Aradi
Bremen Center for Computational Materials Science, University of Bremen
http://www.bccms.uni-bremen.de/cms/people/b-aradi/


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