Re: [Wien] Error for sphere overlapping

2015-06-03 Thread B Tankhilsaihan
Dear Abo I have checked case.in0 it shows following:
TOT  XC_PBE     (XC_LDA,XC_PBESOL,XC_WC,XC_MBJ,XC_REVTPSS)NR2V
 How to manage this error if there is format difference.
RegardsBatsaikhan.T


 On Wednesday, June 3, 2015 7:01 AM, Gavin Abo gs...@crimson.ua.edu wrote:
   

  As the error indicates, there is a problem with the contents of the 
c-mini.in0 file.  Without seeing what is in c-mini.in0, it is hard to know what 
is wrong.
 
 The case.in0 format has changed between 13.1 and 14.2.  The functionals used 
to be specified with a number like 13 for PBE, but now they are specify with 
a string like XC_PBE.  So maybe the problem is due to the format changed.  
For details on the new format of case.in0, see section 7.1.3 Input on page 
106 of the WIEN2k 14.2 usersguide [ 
http://www.wien2k.at/reg_user/textbooks/usersguide.pdf ].
 
 On 6/2/2015 10:39 AM, B Tankhilsaihan wrote:
  
  Hello Abo  Thank you for your help I updated software now i am running on 
Wien2k_14.2  when i run mini_position do i need to restore previous SCF 
calculation or It does new SCF itself ? Is there something to do with previous 
SCF calculation in the mini_position? I assuming not and created new session 
but i got error when I do initialization. The error occurs in  x dstart as 
following  
  
|  forrtl: severe (24): end-of-file during read, unit 14, file 
/home/wgfkp/WIEN2k/c-mini/c-mini.in0
Image  PCRoutineLineSource  
   
dstart 00455C26  Unknown   Unknown  Unknown
dstart 004108D6  make_inter_35  make_inter.F
dstart 0040D988  MAIN__ 21  dstart.F
dstart 00402ED6  Unknown   Unknown  Unknown
libc.so.6  2B61153F1A40  Unknown   Unknown  Unknown
dstart 00402DC9  Unknown   Unknown  Unknown
3.4u 0.1s 0:03.55 99.7% 0+0k 0+13120io 0pf+0w
error: command   /home/wgfkp/wien2k/dstart dstart.def   failed
 
   |

 
  Inputs are same as previous calculation which is done without error.   
  
  Regards Batsaikhan.T  
 
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Re: [Wien] Error for sphere overlapping

2015-06-02 Thread Gavin Abo
As the error indicates, there is a problem with the contents of the 
c-mini.in0 file.  Without seeing what is in c-mini.in0, it is hard to 
know what is wrong.


The case.in0 format has changed between 13.1 and 14.2.  The functionals 
used to be specified with a number like 13 for PBE, but now they are 
specify with a string like XC_PBE.  So maybe the problem is due to the 
format changed.  For details on the new format of case.in0, see section 
7.1.3 Input on page 106 of the WIEN2k 14.2 usersguide [ 
http://www.wien2k.at/reg_user/textbooks/usersguide.pdf ].


On 6/2/2015 10:39 AM, B Tankhilsaihan wrote:

Hello Abo
Thank you for your help
I updated software now i am running on Wien2k_14.2
when i run mini_position do i need to restore previous SCF calculation 
or It does new SCF itself ?
Is there something to do with previous SCF calculation in the 
mini_position?
I assuming not and created new session but i got error when I do 
initialization.

The error occurs in  x dstart as following

forrtl: severe (24): end-of-file during read, unit 14, file 
/home/wgfkp/WIEN2k/c-mini/c-mini.in0
Image  PCRoutineLineSource
dstart 00455C26  Unknown   Unknown  Unknown
dstart 004108D6  make_inter_35  make_inter.F
dstart 0040D988  MAIN__ 21  dstart.F
dstart 00402ED6  Unknown   Unknown  Unknown
libc.so.6  2B61153F1A40  Unknown   Unknown  Unknown
dstart 00402DC9  Unknown   Unknown  Unknown
3.4u 0.1s 0:03.55 99.7% 0+0k 0+13120io 0pf+0w
error: command   /home/wgfkp/wien2k/dstart dstart.def   failed


Inputs are same as previous calculation which is done without error.


Regards
Batsaikhan.T
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Re: [Wien] Error for sphere overlapping

2015-05-28 Thread Gavin Abo
Yes, you can try decreasing the RMT, where it is recommended to use 
setrmt (terminal) or set automatically RMT and continue editing 
(w2web) [ 
http://www.mail-archive.com/wien%40zeus.theochem.tuwien.ac.at/msg07996.html 
, http://www.wien2k.at/reg_user/faq/rmt.html ].


Or you might want to upgrade from WIEN2k 13.1 to 14.2 in order to use 
reduce_rmt_lapw that was released in WIEN2k 14.1.  As it says on the 
webpage at http://www.wien2k.at/reg_user/updates/ :


*reduce_rmt_lapw*: (should be called when a structure optimization stops 
due to overlapping spheres. It will save the current calc. as 
case_old_rmt_XX, reduce sphere sizes by a certain amount (3 % or -r XX) 
and extrapolate densities on the new radial mesh, so that afterwards you 
can easily continue with the minimization)


However, if any of the atomic positions have moved too close to each 
other, decreasing the RMT might not work and the atomic positions would 
have to be adjusted so that the atoms do not overlap.  Check the failing 
struct file with xcrysden and/or x nn, these programs can help you see 
if the atomic positions are too close.


I assume the Li positions are constrained in the calculation as you 
mentioned before [ 
http://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg12403.html ]. 
I haven't tried constraining positions during optimization.  So I don't 
know, but maybe constraining positions can also lead to such a problem.


Also, your RMT of Li looks like it might be too small.  From what I have 
seen in literature, the RMT of Li in LiFePO4 is around 1.97 a.u. [ J. 
Phys.: Condens. Matter vol. 22 p. 275501 (2010): 
http://dx.doi.org/10.1088/0953-8984/22/27/275501 ].


On 5/28/2015 4:39 AM, B Tankhilsaihan wrote:

Hello Dear Wien2k users
I am running calculation of minimization on Wien2k_13.01.
I faced with error that caused by sphere overlapping due to atomic 
movement.

My structure is LiFePO4 and I chose Rmt as following
Li-0.88
Fe-2.0
P-1.66
O-1.21
Then how can i solve this error?
Can I decrease these values more?


Thanks in advance

Regards
Tankhilaa
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