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Re :[abinit-forum] Convergence problem of tolmxf


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  • From: ALPER KINACI <e120231@metu.edu.tr>
  • To: forum@abinit.org
  • Subject: Re :[abinit-forum] Convergence problem of tolmxf
  • Date: Wed, 23 Feb 2005 14:58:46 +0200


Hello,

I have tried increasing toldfe to 1e-10 and it worked very smoothly
and precisely. The
system converged after 14 broyden steps. Thanks very much.

Here is the final step of the output.


BROYDEN STEP NUMBER 14
------------------------------------------------------

iter Etot(hartree) deltaE(h) residm vres2 diffor
maxfor magn
ETOT 1 -22.966776381449 -2.30E+01 6.19E-06 9.67E-03 0.0E+00
0.00E+00 0.000
ETOT 2 -22.966775384457 9.97E-07 8.88E-06 1.79E-02 0.0E+00
0.00E+00 0.000
ETOT 3 -22.966777447156 -2.06E-06 3.33E-06 1.60E-04 0.0E+00
0.00E+00 0.000
ETOT 4 -22.966777451853 -4.70E-09 7.53E-06 2.12E-04 0.0E+00
0.00E+00 0.000
ETOT 5 -22.966777468819 -1.70E-08 3.01E-06 4.83E-05 0.0E+00
0.00E+00 0.000
ETOT 6 -22.966777469062 -2.43E-10 5.87E-06 4.96E-05 0.0E+00
0.00E+00 0.000
ETOT 7 -22.966777471519 -2.46E-09 2.35E-06 1.43E-05 0.0E+00
0.00E+00 0.000
ETOT 8 -22.966777471989 -4.70E-10 4.42E-06 6.80E-06 0.0E+00
0.00E+00 0.000
ETOT 9 -22.966777471885 1.03E-10 1.79E-06 8.41E-06 0.0E+00
0.00E+00 0.000
ETOT 10 -22.966777472555 -6.69E-10 3.40E-06 1.07E-06 0.0E+00
0.00E+00 0.000
ETOT 11 -22.966777472515 3.95E-11 1.38E-06 1.29E-06 0.0E+00
0.00E+00 0.000
ETOT 12 -22.966777472623 -1.08E-10 2.78E-06 4.69E-07 0.0E+00
0.00E+00 0.000
ETOT 13 -22.966777472628 -5.31E-12 1.11E-06 4.35E-07 0.0E+00
0.00E+00 0.000
ETOT 14 -22.966777472646 -1.75E-11 2.42E-06 1.49E-07 0.0E+00
0.00E+00 0.000

At SCF step 14, etot is converged :
for the second time, diff in etot= 1.747E-11 < toldfe= 1.000E-10

Cartesian components of stress tensor (hartree/bohr^3)
sigma(1 1)= -2.00257614E-07 sigma(3 2)= 0.00000000E+00
sigma(2 2)= -1.95773196E-07 sigma(3 1)= 0.00000000E+00
sigma(3 3)= -8.39009848E-08 sigma(2 1)= 0.00000000E+00

Unit cell characteristics :
acell= 5.6273851223E+00 5.6273849793E+00 5.6273849793E+00
rprim= 8.1649392253E-01 0.0000000000E+00 5.7735402871E-01
-4.0824697164E-01 7.0710446098E-01 5.7735404338E-01
-4.0824697164E-01 -7.0710446098E-01 5.7735404338E-01
ucvol= 1.7820500285E+02 Bohr^3
lengths= 5.6273851223E+00 5.6273849793E+00 5.6273849793E+00 Bohr
angles (23,13,12)= 89.99962399 89.99962691 89.99962691 degrees
Cartesian coordinates (bohr)
0.00000000000000E+00 0.00000000000000E+00 0.00000000000000E+00
0.00000000000000E+00 0.00000000000000E+00 4.87349020722319E+00
Cartesian forces (hart/bohr); max,rms= 0.00000E+00 0.00000E+00 (free
atoms)
0.00000000000000E+00 0.00000000000000E+00 0.00000000000000E+00
0.00000000000000E+00 0.00000000000000E+00 0.00000000000000E+00

At the end of Broyden step 14, total energy= -2.29667774726458E+01
Ha.

At Broyd/MD step 14, gradients are converged :
max grad (force/stress) = 2.0026E-05 < tolmxf= 5.0000E-05 ha/bohr
(free atoms)





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