Cost_package/Manuals/molcost_emploi

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***********
* MOLCOST *
***********
Interface between molcas and the toulouse programs
I What does the program?
1. After seward
- generates an formatted Info file containing various information about
the system studied
- generates an unformatted Mono file containing one-electron operators
2. After motra
generates the same files, with Molecular Orbital information if files
TraOne and TraInt exist.
II. DATA
a namelist
&cost
prefix='Project.' (required data)
molcas= version of molcas: 4 or 5 or 54 (default 0: in that case, molcost
analizes the OneInt file to get the molcas value)
(yopm= T: OPENMOLCAS version - not yet implemented - see calculs_openmolcas_emploi)
ycl= T: generates a formatted file of MO integrals (default F)
yao= T: reads and interfaces the AO integrals (default T)
ymo= T: reads and interfaces the OM integrals (default T)
ybas= T: reads and interfaces the COM file (default F)
ysym= T: the one-electron operators in the Mono file are
square matrices
F: the one-electron operators in the Mono file are
trianguler matrices (default F)
(see in paragraph IV the form of file Mono)
fermi= 0: fermi level (number of occupied orbitals in each symmetry)
(required if molcost runs after motra)
ychol= F: T in Cholesky calculation
III. Aspect of the Info file (example of ethylene molecule) ("prefix"Info)
=============================================
File: C2H4.Info
created by molcost
date:
=============================================
&cost_AO
nsym=8
isym= 6, 6, 3, 3, 1, 1, 0, 0,
norb= 20
its=
1,2,3,4,5,6,7,8,
2,1,4,3,6,5,8,7,
3,4,1,2,7,8,5,6,
4,3,2,1,8,7,6,5,
5,6,7,8,1,2,3,4,
6,5,8,7,2,1,4,3,
7,8,5,6,3,4,1,2,
8,7,6,5,4,3,2,1,
enuc= 33.382397244601
natom= 2
coor=
1.2651715494, 0.0000000000, 0.0000000000,
2.2159663935, 1.8187044168, 0.0000000000,
atom=
'C ','H ',
label=
'C 1s ','C 1s ','C 1s ','C 2px ','H 1s ',
'H 1s ','C 1s ','C 1s ','C 1s ','C 2px ',
'H 1s ','H 1s ','C 2py ','H 1s ','H 1s ',
'C 2py ','H 1s ','H 1s ','C 2pz ','C 2pz ',
/
if Info is created after motra, a second namelist appears:
&cost_MO
nsym=8,norb= 20,noc= 8
itsym=
1,1,1,2,2,3,4,5,1,1,1,2,2,2,2,3,3,4,4,6,
isym= 6, 6, 3, 3, 1, 1, 0, 0,
frozen= 0, 0, 0, 0, 0, 0, 0, 0,
enuc= 0.333823972446E+02
ycl=F
&end
IV. How to read the unformatted Mono file ("prefix"Mono)
open(1,file=...)
1. ysym=F (one-eletron operators in triangular form)
a. seek the label:
- One-electrons integrals: label= '==ONEINT MATRIX (TOTAL)'
- Overlap matrix: label= '==OVERLAP MATRIX (SYM)'
character*80 aa
do
read(1) aa
if(trim(aa).eq.label) then
b. read the operator
- read the length of the operator, the number of symmetries,
the number of orbitals by symmetry
read(1) len,nsym,(isym(k),k=1,nsym)
- read the operator
read(1) hmono(1:len)
endif
enddo
other one electron operators must be added...