Re: [Wien] wien2venus.py problem

2013-07-19 Thread Dr. Sharat Chandra


Dear Yasir Ali

Please use XCrysden for calculating the 3D electron density distribution 
in WIEN2k. It can handle spin polarized cases as well.


Regards
Sharat Chandra

On Thu, 18 Jul 2013, Yasir Ali wrote:


Date: Thu, 18 Jul 2013 22:16:35 -0700 (PDT)
From: Yasir Ali yasiralikhan...@yahoo.com
Reply-To: A Mailing list for WIEN2k users wien@zeus.theochem.tuwien.ac.at
To: wien wien@zeus.theochem.tuwien.ac.at
Subject: [Wien] wien2venus.py problem

I am facing problem in wien2venus.py. i used wien2venus.py 50 50 50 to 
generate case.rho3d file of electron density. When i used to plot this 
generated file, i.e., case.rho3d in VESTA, it does not give plot but 
only give an empty cube.


So any one can tell me what is the problem?

Regards:

Yasir Ali


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[Wien] Initialization issue with core leak out of sphere And RMT Sums Greater than NN-DIST

2011-12-05 Thread Dr. Sharat Chandra

Have you given the lattice parameters in Bohr units or in nm units? I Bohr 
= 0.5291772108 A

On Mon, 5 Dec 2011, Qiwen  YAO wrote:

 Date: Mon, 05 Dec 2011 19:24:36 +0900
 From: Qiwen  YAO Yao.Qiwen at nims.go.jp
 Reply-To: A Mailing list for WIEN2k users wien at zeus.theochem.tuwien.ac.at
 To: A Mailing list for WIEN2k users wien at zeus.theochem.tuwien.ac.at
 Subject: [Wien] Initialization issue with core leak out of sphere And RMT Sums
  Greater than NN-DIST
 
 Dear all,
 I have been facing a few compounds that I am unable to do the initialization 
 (using w2web) for the calculation.

 The problem is:
 I was facing both core leak out of sphere, and  RMT Sums Greater than 
 NN-DIST at the same time.

 A recent example: I am trying to do an calculation initialization on the 
 LuFe2O4  (R-3m group) crystal (cell parameters are from the Pearson's Crystal 
 Data sheet 382676, a=b=0.3435nm, c=2.525nm, Alpha=Beta=90 degree, Theta=120 
 degree. Atomic positions:
 O1: 0  0  0.1295
 Fe:  0  0  0.2141
 O2: 0  0  0.2914
 Lu:  0  0  0
 ).

 Using the WIEN default RMT values and the default ENERGY to separate core and 
 valence states (-6) , I was facing core electrons leak out of MT-sphere  
 message for all four atoms. So I go back to the x start step and change the 
 separation energy to the lowest possible value (-10 in this case) - if going 
 any lower than -10, I will be seeing the error message after running x 
 start, like these:

 forrtl: severe (24): end-of-file during read, unit -4, file stdin
 error: command   /home/wen/WIEN2K11/wien2k11install/lstart lstart.def   failed

 So, the natural step I took next is to increase the RMT values for the atoms 
 correspondingly (according to each atom's core leak value). Then I am facing 
 an another problem:  If I am to increase the RMT values too large, then in 
 the x nn step I will be seeing errors like

 ERROR !!!
 RMT(  1)=0.53000 AND RMT(  1)=0.53000
 SUMS TO 1.06000 GT NNN-DIST= 0.84061

 But if the RMT value is not increased enough then the core leaking message 
 will still be there.

 So how would I solve such problems? I have been facing these for a few 
 compounds - for example, the other compound I tried was BiAlO3 which would 
 lead me to the same bottle-neck problem.

 Is there an automatic approaching way that I can take to get rid of both 
 error message at the same time? For cases like these, if there is no 
 practical solution to the initialization would that means the unit cell 
 parameters were out of touch (reality)?

 Thank you for reading. I have been searching the archive for a solution but 
 no luck.

 Kind regards,
 Wen

 **

 Dr QiWen YAO
 JSPS Fellow
 Multifunctional Materials Group
 Optical and Electronic Materials Unit
 Environment and Energy Materials Research Division

 National Institute for Materials Science

 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
 Phone: +81-29-851-3354, ext. no. 6482, Fax: +81-29-859-2501

 **

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[Wien] About optic code in WIEN2k_11.1 (Release 5/4/2011)

2011-06-09 Thread Dr. Sharat Chandra
Hi

I have a report to make about the optic code included in WIEN2k_11.1 
(Release 5/4/2011).

I am using the WIEN2k on a Fedora 12 system with ifort (IFORT) 10.1 
20080602.

I am calculating the optical constants for Si diamond structure crystal. 
(lattice parameter 10.270700 atu, Si at (1/8,1/8,1/8). My Si.inop file is 
given below (just the default file from case.inop, where I have put the 
proper number of bands in line 2 for NBvalMAX):

---
9 1   number of k-points, first k-point
-5.0 3.0 4Emin, Emax for matrix elements, NBvalMAX
2 number of choices (columns in *outmat):
1 Re xx
3 Re zz
OFF   ON/OFF   writes MME to unit 4

Choices:
1..Re xx
2..Re yy
3..Re zz
4..Re xy
5..Re xz
6..Re yz
7..Im xy
8..Im xz
9..Im yz
-

When I run the command: x optic, I get the following error:

  emin,emax,nbvalmax  -5.00   3.00 4
  creating ust
  kmin,kmax -16  -16  -16   16   16   16
forrtl: severe (174): SIGSEGV, segmentation fault occurred
Image  PCRoutineLineSource
optic  00428975  planew_   166  planew_tmp.f
optic  0043AAA7  mom_mat_  588  sph-UP_tmp.f
optic  0047  MAIN__447  opmain.f
optic  0040328E  Unknown   Unknown  Unknown
libc.so.6  0030BE61EB1D  Unknown   Unknown  Unknown
optic  004031A9  Unknown   Unknown  Unknown
8.090u 0.232s 0:08.33 99.8% 0+0k 0+5840io 0pf+0w
error: command   /usr/local/wien2k111/optic optic.def   failed
--

This input file runs properly with the optic package included in 
WIEN2k_09.2 (Release 29/9/2009).

I am not able to understand where is the error coming from as the codes 
in both the versions are quite different.

Regards

Sharat Chandra


[Wien] charge density of a single atom

2011-05-16 Thread Dr. Sharat Chandra
Hi

I am interested in obtaining the variation in the charge density with 
respect to r, for isolated Y atom. For this I have seen the convergence of 
total energy with respect to the unit cell length, RMT*kmax and Gmax and I 
use a single k-point for all the calculations. I obtain 15 a.u. as the 
converged unit cell parameter. I have put the atom in the centre of the 
unit cell. scf shows that there are 11 electrons in the valence band, ie., 
4s2, 4p6, 4d1, 5s2. The input for lapw2 in electron density calculation is 
the range of the valence electrons energy obtained in the scf file. I 
carry out the calculation of the 3D charge density using XCrysden, using 
RHO, ANG, VAL, NODEBUG as the inputs for lapw5 program.

I calculate the the distribution of the charge density from the 
(1/2,1/2,1/2) to (1,1/2,1/2) direction along the single line to get the 
rho(r) versus r on a 300 point grid from the xsf data save by XCrysden. 
When I perform an integration of this data (by integrating the r versus 
4*pi*r^2*rho(r) data) to obtain the total charge, I get ~20 electrons. I 
should be getting either 11 electrons, or 39 electrons, which is the 
atomic number of Y, what I get is neither here nor there.

Can you please tell me what I am doing wrong? Is it that I have to use AIM 
to get the real charge density, or any other method is to be used?

Regards

Sharat Chandra



[Wien] mpich2 with Wien2k

2008-04-21 Thread Dr. Sharat Chandra
Dear Lawrence

We have been able to get the WIEN working only with the mpich1 till now 
and we too get the same error as you have reported. The error is mainly 
due to the error in the devices that get made during the compilation of 
mpich2. However, WIEN works properly with lammpi package.

We have the mpich1/2 and lam on our 64 node cluster machine with Redhat 4E 
and Intel ifort 9/mkl8 compilers. Till now we have found the mpich1 or lam 
mpi to be compatible with most of the dft packages.

Hope this helps you. 

Regards
Sharat Chandra


On Fri, 18 Apr 2008, Laurence Marks wrote:

 Has anyone got this working? I'm getting an error in CALL
 SL_INIT(ICTXTALL, 1, NPE) in lapw1 of
 
 Fatal error in MPI_Comm_size: Invalid communicator, error stack:
 MPI_Comm_size(110): MPI_Comm_size(comm=0x5b, size=0xa4ee68) failed
 MPI_Comm_size(69).: Invalid communicator
 
 (it might be some bad hardware/drivers)



[Wien] Where is the MKL?

2008-04-09 Thread Dr. Sharat Chandra
Hi

You have to run the proper mklvars*.sh or mklvars*.csh file depending on 
your shell (whether bash or csh/tcsh) at the login time (put it in the 
.bashrc or .tcshrc).

Regards
Sharat Chandra