mirror of
https://gitlab.com/scemama/QCaml.git
synced 2024-08-29 15:53:41 +02:00
100 lines
2.9 KiB
OCaml
100 lines
2.9 KiB
OCaml
let () =
|
|
let open Command_line in
|
|
begin
|
|
set_header_doc (Sys.argv.(0) ^ " - QCaml command");
|
|
set_description_doc "Runs a CAS-CI calculation";
|
|
set_specs
|
|
[ { short='b' ; long="basis" ; opt=Mandatory;
|
|
arg=With_arg "<string>";
|
|
doc="Name of the file containing the basis set"; } ;
|
|
|
|
{ short='x' ; long="xyz" ; opt=Mandatory;
|
|
arg=With_arg "<string>";
|
|
doc="Name of the file containing the nuclear coordinates in xyz format"; } ;
|
|
|
|
{ short='m' ; long="multiplicity" ; opt=Optional;
|
|
arg=With_arg "<int>";
|
|
doc="Spin multiplicity (2S+1). Default is singlet"; } ;
|
|
|
|
{ short='c' ; long="charge" ; opt=Optional;
|
|
arg=With_arg "<int>";
|
|
doc="Total charge of the molecule. Default is 0"; } ;
|
|
|
|
{ short='n' ; long="n_elec" ; opt=Mandatory;
|
|
arg=With_arg "<int>";
|
|
doc="Number of electrons in the active space."; } ;
|
|
|
|
{ short='o' ; long="n_orb" ; opt=Mandatory;
|
|
arg=With_arg "<int>";
|
|
doc="Number of MOs in the active space."; } ;
|
|
]
|
|
end;
|
|
|
|
(* Handle options *)
|
|
let basis_file = Util.of_some @@ Command_line.get "basis" in
|
|
|
|
let nuclei_file = Util.of_some @@ Command_line.get "xyz" in
|
|
|
|
let n = Util.of_some @@ Command_line.get "n_elec" |> int_of_string in
|
|
let m = Util.of_some @@ Command_line.get "n_orb" |> int_of_string in
|
|
|
|
let charge =
|
|
match Command_line.get "charge" with
|
|
| Some x -> int_of_string x
|
|
| None -> 0
|
|
in
|
|
|
|
let multiplicity =
|
|
match Command_line.get "multiplicity" with
|
|
| Some x -> int_of_string x
|
|
| None -> 1
|
|
in
|
|
|
|
let ppf =
|
|
if Parallel.master then Format.std_formatter
|
|
else Printing.ppf_dev_null
|
|
in
|
|
|
|
let s =
|
|
Simulation.of_filenames ~charge ~multiplicity ~nuclei:nuclei_file basis_file
|
|
in
|
|
|
|
let hf = HartreeFock.make s in
|
|
Format.fprintf ppf "@[%a@]@." HartreeFock.pp hf;
|
|
|
|
let mos =
|
|
MOBasis.of_hartree_fock hf
|
|
in
|
|
|
|
let space =
|
|
DeterminantSpace.cas_of_mo_basis mos ~frozen_core:true n m
|
|
in
|
|
let ci = CI.make space in
|
|
Format.fprintf ppf "CAS-CI energy : %20.16f@." ((CI.eigenvalues ci).{1} +. Simulation.nuclear_repulsion s);
|
|
|
|
(*
|
|
let pt2 = CI.pt2_mp ci in
|
|
Format.fprintf ppf "CAS-MP2 energy : %20.16f@." ((CI.eigenvalues ci).{1} +. Simulation.nuclear_repulsion s +. pt2);
|
|
*)
|
|
|
|
(*
|
|
|
|
let pt2 = CI.pt2_en ci in
|
|
Format.fprintf ppf "CAS-EN2 energy : %20.16f@." ((CI.eigenvalues ci).{1} +. Simulation.nuclear_repulsion s +. pt2);
|
|
|
|
let pt2 = CI.pt2_en_reference ci in
|
|
Format.fprintf ppf "CAS-EN2 energy (reference) : %20.16f@." ((CI.eigenvalues ci).{1} +. Simulation.nuclear_repulsion s +. pt2);
|
|
*)
|
|
|
|
(*
|
|
let variance = CI.variance ci in
|
|
Format.fprintf ppf "CAS variance : %20.16f@." variance
|
|
*)
|
|
|
|
(*
|
|
let s2 = Util.xt_o_x ~o:(CI.s2_matrix ci) ~x:(CI.eigenvectors ci) in
|
|
Util.list_range 1 (DeterminantSpace.size space)
|
|
|> List.iter (fun i -> Format.printf "@[%f@]@;" s2.{i,i});
|
|
*)
|
|
|