[Wien] Parallel calculation -stop of iterations after mixer. :ENE NaN value

Coriolan TIUSAN coriolan.tiusan at phys.utcluj.ro
Sun Oct 28 14:35:56 CET 2018


Dear wien2k users,

I am running wien 18.2 on Ubuntu 18.04 , installed on a HP station: 
64GB,  Intel® Xeon(R) Gold 5118 CPU @ 2.30GHz × 48.

The fortran compiler/math library are ifc and intel mkl library. For 
parallel execution I have MPI+SCALAPACK, FFTW.

When calculating multilayered structures (e.g. V(3ML)/Fe(3ML)/MgO(3ML) 
in supercell slab model (attached structure file), after a certain 
number of iterations towards the convergence, I have a sudden stop, 
without any error (in error files) after the mixer.

I have similar problems for similar heterostructures: Au/Fe/MgO, but 
only when trying to do geometrical optimization (force minimisation). 
The initial scf calculation for Au/Fe/MgO slab converged (runsp_lapw -cc 
0.001, -ec 0.0001 -p)  without any errors. I guess that, this would 
demonstrate that the programs have been properly installed and functional?

Coming back to the stop in scf for V/Fe/MgO, the following things can be 
remarked:

1/ For the  last iteration case.scf file containes NaN values for  :DIS 
and :ENE,

:DEN  : DENSITY INTEGRAL  =                    NaN   (Ry)

:ENE  : *WARNING** TOTAL ENERGY IN Ry =                   NaN

2/ The dayfile displays:

  LAPW0 END
[1]    Done                          mpirun -np 48 -machinefile 
.machine0 /home/tiusan/W2k/lapw0_mpi lapw0.def >> .time00
  LAPW1 END
[1]  + Done                          ( cd $PWD; $t $ttt; rm -f 
.lock_$lockfile[$p] ) >> .time1_$loop
  LAPW1 END
[1]  + Done                          ( cd $PWD; $t $ttt; rm -f 
.lock_$lockfile[$p] ) >> .time1_$loop
LAPW2 - FERMI; weights written
  LAPW2 END
[1]    Done                          ( cd $PWD; $t $ttt $vector_split; 
rm -f .lock_$lockfile[$p] ) >> .time2_$loop
  SUMPARA END
LAPW2 - FERMI; weights written
  LAPW2 END
[1]    Done                          ( cd $PWD; $t $ttt $vector_split; 
rm -f .lock_$lockfile[$p] ) >> .time2_$loop
  SUMPARA END
  CORE  END
  CORE  END
  MIXER END
(standard_in) 1: syntax error
(standard_in) 1: syntax error
(standard_in) 1: syntax error
(standard_in) 1: syntax error
(standard_in) 1: syntax error
etest: Subscript out of range.

3/ Following some remarks from the frum, I have added sleep 1 in the 
testconv script, without any success...

Could someone help?

With thanks in advance,

Coriolan TIUSAN



-- 
__________________________________________________________________
|       Prof. Dr. Eng. Habil. Coriolan Viorel TIUSAN              |
|---------------------------------------------------------------  |
|                                                                 |
| Department of Physics and Chemistry                             |
| Technical University of Cluj-Napoca                             |
|                                                                 |
| Center of Superconductivity, Spintronics and Surface Science    |
| Str. Memorandumului No. 28, RO-400114 Cluj-Napoca, ROMANIA      |
|                                                                 |
|       Tel: +40-264-401-465 Fax: +40-264-592-055                 |
|                Cell: +40-732-893-750                            |
|       e-mail: coriolan.tiusan at phys.utcluj.ro                    |
|       web: http://www.c4s.utcluj.ro/                            |
|_______________________________________________________________  |
|                         	                                  |
|  Senior Researcher                                              |
|  National Center of Scientific Research - FRANCE                |
|  e-mail: coriolan.tiusan at ijl.nancy-universite.fr                |
|  web: http://www.c4s.utcluj.ro/webperso/tiusan/welcome.html     |
|_________________________________________________________________|

-------------- next part --------------
VFeMgO                                                                         
P   LATTICE,NONEQUIV.ATOMS: 13                                                 
MODE OF CALC=RELA unit=ang                                                     
  5.725872  5.725872 33.391474 90.000000 90.000000 90.000000                   
ATOM  -1: X=0.00000000 Y=0.00000000 Z=0.00000000
          MULT= 1          ISPLIT=-2
V 1        NPT=  781  R0=0.00005000 RMT=    2.0800   Z: 23.0                   
LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
                     0.0000000 1.0000000 0.0000000
                     0.0000000 0.0000000 1.0000000
ATOM  -2: X=0.50000000 Y=0.50000000 Z=0.08573854
          MULT= 1          ISPLIT=-2
V 2        NPT=  781  R0=0.00005000 RMT=    2.0800   Z: 23.0                   
LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
                     0.0000000 1.0000000 0.0000000
                     0.0000000 0.0000000 1.0000000
ATOM  -3: X=0.00000000 Y=0.00000000 Z=0.17147708
          MULT= 1          ISPLIT=-2
V 3        NPT=  781  R0=0.00005000 RMT=    2.0800   Z: 23.0                   
LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
                     0.0000000 1.0000000 0.0000000
                     0.0000000 0.0000000 1.0000000
ATOM  -4: X=0.50000000 Y=0.50000000 Z=0.25721562
          MULT= 1          ISPLIT=-2
V 4        NPT=  781  R0=0.00005000 RMT=    2.0800   Z: 23.0                   
LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
                     0.0000000 1.0000000 0.0000000
                     0.0000000 0.0000000 1.0000000
ATOM  -5: X=0.00000000 Y=0.00000000 Z=0.33814375
          MULT= 1          ISPLIT=-2
Fe1        NPT=  781  R0=0.00005000 RMT=    2.0300   Z: 26.0                   
LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
                     0.0000000 1.0000000 0.0000000
                     0.0000000 0.0000000 1.0000000
ATOM  -6: X=0.50000000 Y=0.50000000 Z=0.41907187
          MULT= 1          ISPLIT=-2
Fe2        NPT=  781  R0=0.00005000 RMT=    2.0300   Z: 26.0                   
LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
                     0.0000000 1.0000000 0.0000000
                     0.0000000 0.0000000 1.0000000
ATOM  -7: X=0.00000000 Y=0.00000000 Z=0.50000000
          MULT= 1          ISPLIT=-2
Fe3        NPT=  781  R0=0.00005000 RMT=    2.0300   Z: 26.0                   
LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
                     0.0000000 1.0000000 0.0000000
                     0.0000000 0.0000000 1.0000000
ATOM  -8: X=0.00000000 Y=0.00000000 Z=0.61519525
          MULT= 1          ISPLIT=-2
O 1        NPT=  781  R0=0.00010000 RMT=    1.8000   Z:  8.0                   
LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
                     0.0000000 1.0000000 0.0000000
                     0.0000000 0.0000000 1.0000000
ATOM  -9: X=0.50000000 Y=0.50000000 Z=0.61519525
          MULT= 1          ISPLIT=-2
Mg1        NPT=  781  R0=0.00010000 RMT=    2.0100   Z: 12.0                   
LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
                     0.0000000 1.0000000 0.0000000
                     0.0000000 0.0000000 1.0000000
ATOM -10: X=0.50000000 Y=0.50000000 Z=0.74833616
          MULT= 1          ISPLIT=-2
O 2        NPT=  781  R0=0.00010000 RMT=    1.8000   Z:  8.0                   
LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
                     0.0000000 1.0000000 0.0000000
                     0.0000000 0.0000000 1.0000000
ATOM -11: X=0.00000000 Y=0.00000000 Z=0.74833616
          MULT= 1          ISPLIT=-2
Mg2        NPT=  781  R0=0.00010000 RMT=    2.0100   Z: 12.0                   
LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
                     0.0000000 1.0000000 0.0000000
                     0.0000000 0.0000000 1.0000000
ATOM -12: X=0.00000000 Y=0.00000000 Z=0.88147708
          MULT= 1          ISPLIT=-2
O 3        NPT=  781  R0=0.00010000 RMT=    1.8000   Z:  8.0                   
LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
                     0.0000000 1.0000000 0.0000000
                     0.0000000 0.0000000 1.0000000
ATOM -13: X=0.50000000 Y=0.50000000 Z=0.88147708
          MULT= 1          ISPLIT=-2
Mg3        NPT=  781  R0=0.00010000 RMT=    2.0100   Z: 12.0                   
LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000
                     0.0000000 1.0000000 0.0000000
                     0.0000000 0.0000000 1.0000000
   8      NUMBER OF SYMMETRY OPERATIONS
-1 0 0 0.00000000
 0-1 0 0.00000000
 0 0 1 0.00000000
       1
-1 0 0 0.00000000
 0 1 0 0.00000000
 0 0 1 0.00000000
       2
 0-1 0 0.00000000
-1 0 0 0.00000000
 0 0 1 0.00000000
       3
 0 1 0 0.00000000
-1 0 0 0.00000000
 0 0 1 0.00000000
       4
 0-1 0 0.00000000
 1 0 0 0.00000000
 0 0 1 0.00000000
       5
 0 1 0 0.00000000
 1 0 0 0.00000000
 0 0 1 0.00000000
       6
 1 0 0 0.00000000
 0-1 0 0.00000000
 0 0 1 0.00000000
       7
 1 0 0 0.00000000
 0 1 0 0.00000000
 0 0 1 0.00000000
       8


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