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See source/bdfopt, module/dlfind_module.F90, sys_util/bdf_dlfind_util.F90 for interface.
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== Current limitations ==

1. Change of symmetry during optimization is not correctly handled for excited state optimization, because the correct input file needs to be prepared.

== Examples ==

=== Ground-state opt ===

{{{

$COMPASS
Title
 CH2 Molecule test run, cc-pvqz
Basis
 3-21g
# cc-pvdz
Geometry
O 0.00000000 -0.00000000 0.00174418
H -0.78045951 0.00000000 -0.10962269
H 0.78045951 0.00000000 -0.10962269
End geometry
Check
Skeleton
$END

$bdfopt
$end

$XUANYUAN
$END

$SCF
RHF
$END

$resp
geom
norder
1
method
1
$end

}}}

=== Excited state opt ===

{{{

$COMPASS
Title
 CH2 Molecule test run, cc-pvqz
Basis
 3-21g
Geometry
 O 0.000000 0.000000 0.243991
 H 0.000000 1.178727 -0.45964
 H 0.000000 -1.178727 -0.45964
End geometry
Check
Skeleton
$END

$bdfopt
$end

$XUANYUAN
$END

$SCF
RHF
$END

$tddft
imethod
1
itda
0
idiag
1
istore
1
iexit
1
crit_e
1.d-8
crit_vec
1.d-6
$end

$resp
geom
norder
1
method
2
states
1
1 4 1
nfiles
1
$end

}}}
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== Expert keywords ==
=== Keyword3 ===
{{{#!wiki
xxx
}}}
=== Keyword4 ===
{{{#!wiki
xxx
}}}

= Depend Files =

|| Filename || Description || Format ||
|| || || ||

= Examples =

= Insert latex =
You can insert latex formula as
{{{#!latex
  \begin{equation}
    \rho_{\mu}=\sum_i w_i*\chi_{\mu}(r_i)\chi_{\mu}(r_i)
  \end{equation}
}}}

You can also insert a latex formular inline
    The basis is <<latex($\chi_{\mu}$)>>

bdfopt

See source/bdfopt, module/dlfind_module.F90, sys_util/bdf_dlfind_util.F90 for interface.

Geometry optimiser of BDF package. This module can be used to find minimal points, saddle points and also conical intersection points. 

Current limitations

1. Change of symmetry during optimization is not correctly handled for excited state optimization, because the correct input file needs to be prepared.

Examples

Ground-state opt

$COMPASS    
Title
 CH2 Molecule test run, cc-pvqz
Basis
 3-21g
# cc-pvdz
Geometry
O       0.00000000     -0.00000000      0.00174418
H      -0.78045951      0.00000000     -0.10962269
H       0.78045951      0.00000000     -0.10962269
End geometry
Check
Skeleton
$END

$bdfopt
$end

$XUANYUAN
$END

$SCF
RHF
$END

$resp
geom
norder
1
method
1
$end

Excited state opt

$COMPASS    
Title
 CH2 Molecule test run, cc-pvqz
Basis
 3-21g
Geometry
 O  0.000000    0.000000    0.243991
 H  0.000000    1.178727   -0.45964
 H  0.000000   -1.178727   -0.45964
End geometry
Check
Skeleton
$END

$bdfopt
$end

$XUANYUAN
$END

$SCF
RHF
$END

$tddft
imethod
1
itda
0
idiag
1
istore
1
iexit
1
crit_e
1.d-8
crit_vec
1.d-6
$end

$resp
geom
norder
1
method
2
states
1
1 4 1
nfiles
1
$end

General keywords

Maxcycle

xxx

Method

xxx

bdfopt (last edited 2022-11-15 06:59:28 by wzou)