Dear SIESTA user,

I already sent this email but I did not receive any answer, hopefully this
time.


I have a problem with relaxing a slab containing 447 atoms, I run it using
64 processors but it always stops after first "CG move" without any error.
the last lines in the OUTPUT file are these:

------------------------------------------------------------
-----------------------------------------------------------
 446 10.093   0.143   0.584   1.801   1.805   1.863   1.805   1.801  -0.029
             -0.019  -0.029  -0.019  -0.029   0.163   0.092   0.163

mulliken: Qtot =     2936.000

* Maximum dynamic memory allocated =   315 MB

siesta:                 ==============================
                            Begin CG move =      1
                        ==============================

outcell: Unit cell vectors (Ang):
       19.727538    0.000000    0.000000
       -9.863769   17.084549    0.000000
        0.000000    0.000000   26.000000

outcell: Cell vector modules (Ang)   :   19.727538   19.727538   26.000000
outcell: Cell angles (23,13,12) (deg):     90.0000     90.0000    120.0000
outcell: Cell volume (Ang**3)        :   8762.9383
New_DM. Step:     2
Re-using DM from previous geometry...
Re-using DM without extrapolation (not allowed)
Density Matrix sparsity pattern changed.
------------------------------------------------------------
---------------------------------------------




in stderr file I can see this error :
------------------------------------------------------------
----------------------------------------------
NOTE: orbital pair   4609  4488 (at least) is multiply connected.
NOTE: Harmless for Gamma calculations, except if a COHP analysis is
intended.
--------------------------------------------------------------------------
mpiexec noticed that process rank 60 with PID 482517 on node compute-5-12
exited on signal 11 (Segmentation fault).
------------------------------------------------------------
-----------------------------------------------



I am wondering if any body could help me to solve this problem.

The fdf file is also is like this:

------------------------------------------------------------
------------------------------------------------
NumberOfAtoms    446
NumberOfSpecies  2

%block ChemicalSpeciesLabel
    1    6  C
    2   46  Pd
%endblock ChemicalSpeciesLabel

%block kgrid_Monkhorst_Pack
  3  0   0    0.0
  0  3   0    0.0
  0  0   1    0.0
%endblock kgrid_Monkhorst_Pack

MeshCutoff           250. Ry
PAO.EnergyShift      0.005 Ry

LatticeConstant 1.00 Ang

%block LatticeVectors
 19.727538       0.000000        0.000000
-9.863769        17.084549       0.000000
 0.000000        0.000000        26.000000
%endblock LatticeVectors

AtomicCoordinatesFormat Fractional
%block AtomicCoordinatesAndAtomicSpecies
I've removed this part to make it shorter!!!!!!!!!!!!!
%endblock AtomicCoordinatesAndAtomicSpecies

SpinPolarized         .false.
xc.functional         LDA
xc.authors            CA

SolutionMethod        diagon

MaxSCFIterations      90
MD.TypeOfRun          CG
DM.MixingWeight       0.02
DM.Tolerance          1.d-4
MD.MaxForceTol        0.04 eV/Ang
MD.NumCGsteps         200
DM.NumberPulay        4
ElectronicTemperature 300.0 K

WriteXML  .false.
SlabDipoleCorrection .true.
MD.VariableCell     .false.
WriteEigenvalues    .true.
WriteKbands         .true.
WriteBands          .true.
WriteWaveFunctions  .true.
WriteMullikenPop     1
WriteDenchar        .true.
COOP.Write          .true.
WriteMDhistory      .true.
WriteMDXmol         .true.
SaveElectrostaticPotential .true.
SaveNeutralAtomPotential   .true.
SaveTotalPotential         .true.
------------------------------------------------------------
------------------



Thanks alot

Responder a