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mirror of https://github.com/QuantumPackage/qp2.git synced 2024-12-12 14:43:29 +01:00

added casscf_cipsi

This commit is contained in:
eginer 2023-06-18 21:42:40 +02:00
parent 55fed4b487
commit b2e44beb3e
27 changed files with 3448 additions and 0 deletions

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#!/usr/bin/env bats
source $QP_ROOT/tests/bats/common.bats.sh
source $QP_ROOT/quantum_package.rc
function run_stoch() {
thresh=$2
test_exe casscf || skip
qp set perturbation do_pt2 True
qp set determinants n_det_max $3
qp set davidson threshold_davidson 1.e-10
qp set davidson n_states_diag 4
qp run casscf | tee casscf.out
energy1="$(ezfio get casscf energy_pt2 | tr '[]' ' ' | cut -d ',' -f 1)"
eq $energy1 $1 $thresh
}
@test "F2" { # 18.0198s
rm -rf f2_casscf
qp_create_ezfio -b aug-cc-pvdz ../input/f2.zmt -o f2_casscf
qp set_file f2_casscf
qp run scf
qp set_mo_class --core="[1-6,8-9]" --act="[7,10]" --virt="[11-46]"
run_stoch -198.773366970 1.e-4 100000
}
@test "N2" { # 18.0198s
rm -rf n2_casscf
qp_create_ezfio -b aug-cc-pvdz ../input/n2.xyz -o n2_casscf
qp set_file n2_casscf
qp run scf
qp set_mo_class --core="[1-4]" --act="[5-10]" --virt="[11-46]"
run_stoch -109.0961643162 1.e-4 100000
}
@test "N2_stretched" {
rm -rf n2_stretched_casscf
qp_create_ezfio -b aug-cc-pvdz -m 7 ../input/n2_stretched.xyz -o n2_stretched_casscf
qp set_file n2_stretched_casscf
qp run scf | tee scf.out
qp set_mo_class --core="[1-4]" --act="[5-10]" --virt="[11-46]"
qp set electrons elec_alpha_num 7
qp set electrons elec_beta_num 7
run_stoch -108.7860471300 1.e-4 100000
#
}

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[energy]
type: double precision
doc: Calculated Selected |FCI| energy
interface: ezfio
size: (determinants.n_states)
[energy_pt2]
type: double precision
doc: Calculated |FCI| energy + |PT2|
interface: ezfio
size: (determinants.n_states)
[state_following_casscf]
type: logical
doc: If |true|, the CASSCF will try to follow the guess CI vector and orbitals
interface: ezfio,provider,ocaml
default: False
[diag_hess_cas]
type: logical
doc: If |true|, only the DIAGONAL part of the hessian is retained for the CASSCF
interface: ezfio,provider,ocaml
default: False
[hess_cv_cv]
type: logical
doc: If |true|, the core-virtual - core-virtual part of the hessian is computed
interface: ezfio,provider,ocaml
default: True
[level_shift_casscf]
type: Positive_float
doc: Energy shift on the virtual MOs to improve SCF convergence
interface: ezfio,provider,ocaml
default: 0.005
[fast_2rdm]
type: logical
doc: If true, the two-rdm are computed with a fast algo
interface: ezfio,provider,ocaml
default: True
[criterion_casscf]
type: character*(32)
doc: choice of the criterion for the convergence of the casscf: can be energy or gradients or e_pt2
interface: ezfio, provider, ocaml
default: e_pt2
[thresh_casscf]
type: Threshold
doc: Threshold on the convergence of the CASCF energy.
interface: ezfio,provider,ocaml
default: 1.e-06
[pt2_min_casscf]
type: Threshold
doc: Minimum value of the pt2_max parameter for the CIPSI in the CASSCF iterations.
interface: ezfio,provider,ocaml
default: 1.e-04
[n_big_act_orb]
type: integer
doc: Number of active orbitals from which the active space is considered as large, and therefore pt2_min_casscf is activated.
interface: ezfio,provider,ocaml
default: 16
[adaptive_pt2_max]
type: logical
doc: If |true|, the pt2_max value in the CIPSI iterations will automatically adapt, otherwise it is fixed at the value given in the EZFIO folder
interface: ezfio,provider,ocaml
default: True

5
src/casscf_cipsi/NEED Normal file
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cipsi
selectors_full
generators_cas
two_body_rdm
dav_general_mat

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======
casscf
======
|CASSCF| program with the CIPSI algorithm.

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! -*- F90 -*-
BEGIN_PROVIDER [logical, bavard]
! bavard=.true.
bavard=.false.
END_PROVIDER

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BEGIN_PROVIDER [real*8, bielec_PQxx, (mo_num, mo_num,n_core_inact_act_orb,n_core_inact_act_orb)]
BEGIN_DOC
! bielec_PQxx : integral (pq|xx) with p,q arbitrary, x core or active
! indices are unshifted orbital numbers
END_DOC
implicit none
integer :: i,j,ii,jj,p,q,i3,j3,t3,v3
real*8 :: mo_two_e_integral
bielec_PQxx(:,:,:,:) = 0.d0
PROVIDE mo_two_e_integrals_in_map
!$OMP PARALLEL DEFAULT(NONE) &
!$OMP PRIVATE(i,ii,j,jj,i3,j3) &
!$OMP SHARED(n_core_inact_orb,list_core_inact,mo_num,bielec_PQxx, &
!$OMP n_act_orb,mo_integrals_map,list_act)
!$OMP DO
do i=1,n_core_inact_orb
ii=list_core_inact(i)
do j=i,n_core_inact_orb
jj=list_core_inact(j)
call get_mo_two_e_integrals_i1j1(ii,jj,mo_num,bielec_PQxx(1,1,i,j),mo_integrals_map)
bielec_PQxx(:,:,j,i)=bielec_PQxx(:,:,i,j)
end do
do j=1,n_act_orb
jj=list_act(j)
j3=j+n_core_inact_orb
call get_mo_two_e_integrals_i1j1(ii,jj,mo_num,bielec_PQxx(1,1,i,j3),mo_integrals_map)
bielec_PQxx(:,:,j3,i)=bielec_PQxx(:,:,i,j3)
end do
end do
!$OMP END DO
!$OMP DO
do i=1,n_act_orb
ii=list_act(i)
i3=i+n_core_inact_orb
do j=i,n_act_orb
jj=list_act(j)
j3=j+n_core_inact_orb
call get_mo_two_e_integrals_i1j1(ii,jj,mo_num,bielec_PQxx(1,1,i3,j3),mo_integrals_map)
bielec_PQxx(:,:,j3,i3)=bielec_PQxx(:,:,i3,j3)
end do
end do
!$OMP END DO
!$OMP END PARALLEL
END_PROVIDER
BEGIN_PROVIDER [real*8, bielec_PxxQ, (mo_num,n_core_inact_act_orb,n_core_inact_act_orb, mo_num)]
BEGIN_DOC
! bielec_PxxQ : integral (px|xq) with p,q arbitrary, x core or active
! indices are unshifted orbital numbers
END_DOC
implicit none
integer :: i,j,ii,jj,p,q,i3,j3,t3,v3
double precision, allocatable :: integrals_array(:,:)
real*8 :: mo_two_e_integral
PROVIDE mo_two_e_integrals_in_map
bielec_PxxQ = 0.d0
!$OMP PARALLEL DEFAULT(NONE) &
!$OMP PRIVATE(i,ii,j,jj,i3,j3,integrals_array) &
!$OMP SHARED(n_core_inact_orb,list_core_inact,mo_num,bielec_PxxQ, &
!$OMP n_act_orb,mo_integrals_map,list_act)
allocate(integrals_array(mo_num,mo_num))
!$OMP DO
do i=1,n_core_inact_orb
ii=list_core_inact(i)
do j=i,n_core_inact_orb
jj=list_core_inact(j)
call get_mo_two_e_integrals_ij(ii,jj,mo_num,integrals_array,mo_integrals_map)
do q=1,mo_num
do p=1,mo_num
bielec_PxxQ(p,i,j,q)=integrals_array(p,q)
bielec_PxxQ(p,j,i,q)=integrals_array(q,p)
end do
end do
end do
do j=1,n_act_orb
jj=list_act(j)
j3=j+n_core_inact_orb
call get_mo_two_e_integrals_ij(ii,jj,mo_num,integrals_array,mo_integrals_map)
do q=1,mo_num
do p=1,mo_num
bielec_PxxQ(p,i,j3,q)=integrals_array(p,q)
bielec_PxxQ(p,j3,i,q)=integrals_array(q,p)
end do
end do
end do
end do
!$OMP END DO
! (ip|qj)
!$OMP DO
do i=1,n_act_orb
ii=list_act(i)
i3=i+n_core_inact_orb
do j=i,n_act_orb
jj=list_act(j)
j3=j+n_core_inact_orb
call get_mo_two_e_integrals_ij(ii,jj,mo_num,integrals_array,mo_integrals_map)
do q=1,mo_num
do p=1,mo_num
bielec_PxxQ(p,i3,j3,q)=integrals_array(p,q)
bielec_PxxQ(p,j3,i3,q)=integrals_array(q,p)
end do
end do
end do
end do
!$OMP END DO
deallocate(integrals_array)
!$OMP END PARALLEL
END_PROVIDER
BEGIN_PROVIDER [real*8, bielecCI, (n_act_orb,n_act_orb,n_act_orb, mo_num)]
BEGIN_DOC
! bielecCI : integrals (tu|vp) with p arbitrary, tuv active
! index p runs over the whole basis, t,u,v only over the active orbitals
END_DOC
implicit none
integer :: i,j,k,p,t,u,v
double precision, external :: mo_two_e_integral
PROVIDE mo_two_e_integrals_in_map
!$OMP PARALLEL DO DEFAULT(NONE) &
!$OMP PRIVATE(i,j,k,p,t,u,v) &
!$OMP SHARED(mo_num,n_act_orb,list_act,bielecCI)
do p=1,mo_num
do j=1,n_act_orb
u=list_act(j)
do k=1,n_act_orb
v=list_act(k)
do i=1,n_act_orb
t=list_act(i)
bielecCI(i,k,j,p) = mo_two_e_integral(t,u,v,p)
end do
end do
end do
end do
!$OMP END PARALLEL DO
END_PROVIDER

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BEGIN_PROVIDER [real*8, bielec_PQxx_no, (mo_num, mo_num,n_core_inact_act_orb,n_core_inact_act_orb)]
BEGIN_DOC
! integral (pq|xx) in the basis of natural MOs
! indices are unshifted orbital numbers
END_DOC
implicit none
integer :: i,j,k,l,t,u,p,q
double precision, allocatable :: f(:,:,:), d(:,:,:)
!$OMP PARALLEL DEFAULT(NONE) &
!$OMP PRIVATE(j,k,l,p,d,f) &
!$OMP SHARED(n_core_inact_act_orb,mo_num,n_act_orb,n_core_inact_orb, &
!$OMP bielec_PQxx_no,bielec_PQxx,list_act,natorbsCI)
allocate (f(n_act_orb,mo_num,n_core_inact_act_orb), &
d(n_act_orb,mo_num,n_core_inact_act_orb))
!$OMP DO
do l=1,n_core_inact_act_orb
bielec_PQxx_no(:,:,:,l) = bielec_PQxx(:,:,:,l)
do k=1,n_core_inact_act_orb
do j=1,mo_num
do p=1,n_act_orb
f(p,j,k)=bielec_PQxx_no(list_act(p),j,k,l)
end do
end do
end do
call dgemm('T','N',n_act_orb,mo_num*n_core_inact_act_orb,n_act_orb,1.d0, &
natorbsCI, size(natorbsCI,1), &
f, n_act_orb, &
0.d0, &
d, n_act_orb)
do k=1,n_core_inact_act_orb
do j=1,mo_num
do p=1,n_act_orb
bielec_PQxx_no(list_act(p),j,k,l)=d(p,j,k)
end do
end do
do j=1,mo_num
do p=1,n_act_orb
f(p,j,k)=bielec_PQxx_no(j,list_act(p),k,l)
end do
end do
end do
call dgemm('T','N',n_act_orb,mo_num*n_core_inact_act_orb,n_act_orb,1.d0, &
natorbsCI, n_act_orb, &
f, n_act_orb, &
0.d0, &
d, n_act_orb)
do k=1,n_core_inact_act_orb
do p=1,n_act_orb
do j=1,mo_num
bielec_PQxx_no(j,list_act(p),k,l)=d(p,j,k)
end do
end do
end do
end do
!$OMP END DO NOWAIT
deallocate (f,d)
allocate (f(mo_num,mo_num,n_act_orb),d(mo_num,mo_num,n_act_orb))
!$OMP DO
do l=1,n_core_inact_act_orb
do p=1,n_act_orb
do k=1,mo_num
do j=1,mo_num
f(j,k,p) = bielec_PQxx_no(j,k,n_core_inact_orb+p,l)
end do
end do
end do
call dgemm('N','N',mo_num*mo_num,n_act_orb,n_act_orb,1.d0, &
f, mo_num*mo_num, &
natorbsCI, n_act_orb, &
0.d0, &
d, mo_num*mo_num)
do p=1,n_act_orb
do k=1,mo_num
do j=1,mo_num
bielec_PQxx_no(j,k,n_core_inact_orb+p,l)=d(j,k,p)
end do
end do
end do
end do
!$OMP END DO NOWAIT
!$OMP BARRIER
!$OMP DO
do l=1,n_core_inact_act_orb
do p=1,n_act_orb
do k=1,mo_num
do j=1,mo_num
f(j,k,p) = bielec_PQxx_no(j,k,l,n_core_inact_orb+p)
end do
end do
end do
call dgemm('N','N',mo_num*mo_num,n_act_orb,n_act_orb,1.d0, &
f, mo_num*mo_num, &
natorbsCI, n_act_orb, &
0.d0, &
d, mo_num*mo_num)
do p=1,n_act_orb
do k=1,mo_num
do j=1,mo_num
bielec_PQxx_no(j,k,l,n_core_inact_orb+p)=d(j,k,p)
end do
end do
end do
end do
!$OMP END DO
deallocate (f,d)
!$OMP END PARALLEL
END_PROVIDER
BEGIN_PROVIDER [real*8, bielec_PxxQ_no, (mo_num,n_core_inact_act_orb,n_core_inact_act_orb, mo_num)]
BEGIN_DOC
! integral (px|xq) in the basis of natural MOs
! indices are unshifted orbital numbers
END_DOC
implicit none
integer :: i,j,k,l,t,u,p,q
double precision, allocatable :: f(:,:,:), d(:,:,:)
!$OMP PARALLEL DEFAULT(NONE) &
!$OMP PRIVATE(j,k,l,p,d,f) &
!$OMP SHARED(n_core_inact_act_orb,mo_num,n_act_orb,n_core_inact_orb, &
!$OMP bielec_PxxQ_no,bielec_PxxQ,list_act,natorbsCI)
allocate (f(n_act_orb,n_core_inact_act_orb,n_core_inact_act_orb), &
d(n_act_orb,n_core_inact_act_orb,n_core_inact_act_orb))
!$OMP DO
do j=1,mo_num
bielec_PxxQ_no(:,:,:,j) = bielec_PxxQ(:,:,:,j)
do l=1,n_core_inact_act_orb
do k=1,n_core_inact_act_orb
do p=1,n_act_orb
f(p,k,l) = bielec_PxxQ_no(list_act(p),k,l,j)
end do
end do
end do
call dgemm('T','N',n_act_orb,n_core_inact_act_orb**2,n_act_orb,1.d0, &
natorbsCI, size(natorbsCI,1), &
f, n_act_orb, &
0.d0, &
d, n_act_orb)
do l=1,n_core_inact_act_orb
do k=1,n_core_inact_act_orb
do p=1,n_act_orb
bielec_PxxQ_no(list_act(p),k,l,j)=d(p,k,l)
end do
end do
end do
end do
!$OMP END DO NOWAIT
deallocate (f,d)
allocate (f(n_act_orb,mo_num,n_core_inact_act_orb), &
d(n_act_orb,mo_num,n_core_inact_act_orb))
!$OMP DO
do k=1,mo_num
do l=1,n_core_inact_act_orb
do j=1,mo_num
do p=1,n_act_orb
f(p,j,l) = bielec_PxxQ_no(j,n_core_inact_orb+p,l,k)
end do
end do
end do
call dgemm('T','N',n_act_orb,mo_num*n_core_inact_act_orb,n_act_orb,1.d0, &
natorbsCI, size(natorbsCI,1), &
f, n_act_orb, &
0.d0, &
d, n_act_orb)
do l=1,n_core_inact_act_orb
do j=1,mo_num
do p=1,n_act_orb
bielec_PxxQ_no(j,n_core_inact_orb+p,l,k)=d(p,j,l)
end do
end do
end do
end do
!$OMP END DO NOWAIT
deallocate(f,d)
allocate(f(mo_num,n_core_inact_act_orb,n_act_orb), &
d(mo_num,n_core_inact_act_orb,n_act_orb) )
!$OMP DO
do k=1,mo_num
do p=1,n_act_orb
do l=1,n_core_inact_act_orb
do j=1,mo_num
f(j,l,p) = bielec_PxxQ_no(j,l,n_core_inact_orb+p,k)
end do
end do
end do
call dgemm('N','N',mo_num*n_core_inact_act_orb,n_act_orb,n_act_orb,1.d0, &
f, mo_num*n_core_inact_act_orb, &
natorbsCI, size(natorbsCI,1), &
0.d0, &
d, mo_num*n_core_inact_act_orb)
do p=1,n_act_orb
do l=1,n_core_inact_act_orb
do j=1,mo_num
bielec_PxxQ_no(j,l,n_core_inact_orb+p,k)=d(j,l,p)
end do
end do
end do
end do
!$OMP END DO NOWAIT
!$OMP BARRIER
!$OMP DO
do l=1,n_core_inact_act_orb
do p=1,n_act_orb
do k=1,n_core_inact_act_orb
do j=1,mo_num
f(j,k,p) = bielec_PxxQ_no(j,k,l,n_core_inact_orb+p)
end do
end do
end do
call dgemm('N','N',mo_num*n_core_inact_act_orb,n_act_orb,n_act_orb,1.d0, &
f, mo_num*n_core_inact_act_orb, &
natorbsCI, size(natorbsCI,1), &
0.d0, &
d, mo_num*n_core_inact_act_orb)
do p=1,n_act_orb
do k=1,n_core_inact_act_orb
do j=1,mo_num
bielec_PxxQ_no(j,k,l,n_core_inact_orb+p)=d(j,k,p)
end do
end do
end do
end do
!$OMP END DO NOWAIT
deallocate(f,d)
!$OMP END PARALLEL
END_PROVIDER
BEGIN_PROVIDER [real*8, bielecCI_no, (n_act_orb,n_act_orb,n_act_orb, mo_num)]
BEGIN_DOC
! integrals (tu|vp) in the basis of natural MOs
! index p runs over the whole basis, t,u,v only over the active orbitals
END_DOC
implicit none
integer :: i,j,k,l,t,u,p,q
double precision, allocatable :: f(:,:,:), d(:,:,:)
!$OMP PARALLEL DEFAULT(NONE) &
!$OMP PRIVATE(j,k,l,p,d,f) &
!$OMP SHARED(n_core_inact_act_orb,mo_num,n_act_orb,n_core_inact_orb, &
!$OMP bielecCI_no,bielecCI,list_act,natorbsCI)
allocate (f(n_act_orb,n_act_orb,mo_num), &
d(n_act_orb,n_act_orb,mo_num))
!$OMP DO
do l=1,mo_num
bielecCI_no(:,:,:,l) = bielecCI(:,:,:,l)
do k=1,n_act_orb
do j=1,n_act_orb
do p=1,n_act_orb
f(p,j,k)=bielecCI_no(p,j,k,l)
end do
end do
end do
call dgemm('T','N',n_act_orb,n_act_orb*n_act_orb,n_act_orb,1.d0, &
natorbsCI, size(natorbsCI,1), &
f, n_act_orb, &
0.d0, &
d, n_act_orb)
do k=1,n_act_orb
do j=1,n_act_orb
do p=1,n_act_orb
bielecCI_no(p,j,k,l)=d(p,j,k)
end do
end do
do j=1,n_act_orb
do p=1,n_act_orb
f(p,j,k)=bielecCI_no(j,p,k,l)
end do
end do
end do
call dgemm('T','N',n_act_orb,n_act_orb*n_act_orb,n_act_orb,1.d0, &
natorbsCI, n_act_orb, &
f, n_act_orb, &
0.d0, &
d, n_act_orb)
do k=1,n_act_orb
do p=1,n_act_orb
do j=1,n_act_orb
bielecCI_no(j,p,k,l)=d(p,j,k)
end do
end do
end do
do p=1,n_act_orb
do k=1,n_act_orb
do j=1,n_act_orb
f(j,k,p)=bielecCI_no(j,k,p,l)
end do
end do
end do
call dgemm('N','N',n_act_orb*n_act_orb,n_act_orb,n_act_orb,1.d0, &
f, n_act_orb*n_act_orb, &
natorbsCI, n_act_orb, &
0.d0, &
d, n_act_orb*n_act_orb)
do p=1,n_act_orb
do k=1,n_act_orb
do j=1,n_act_orb
bielecCI_no(j,k,p,l)=d(j,k,p)
end do
end do
end do
end do
!$OMP END DO
!$OMP DO
do l=1,n_act_orb
do p=1,n_act_orb
do k=1,n_act_orb
do j=1,n_act_orb
f(j,k,p)=bielecCI_no(j,k,l,list_act(p))
end do
end do
end do
call dgemm('N','N',n_act_orb*n_act_orb,n_act_orb,n_act_orb,1.d0, &
f, n_act_orb*n_act_orb, &
natorbsCI, n_act_orb, &
0.d0, &
d, n_act_orb*n_act_orb)
do p=1,n_act_orb
do k=1,n_act_orb
do j=1,n_act_orb
bielecCI_no(j,k,l,list_act(p))=d(j,k,p)
end do
end do
end do
end do
!$OMP END DO
deallocate(d,f)
!$OMP END PARALLEL
END_PROVIDER

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program casscf
implicit none
BEGIN_DOC
! TODO : Put the documentation of the program here
END_DOC
call reorder_orbitals_for_casscf
! no_vvvv_integrals = .True.
! touch no_vvvv_integrals
n_det_max_full = 500
touch n_det_max_full
pt2_relative_error = 0.04
touch pt2_relative_error
! call run_stochastic_cipsi
call run
end
subroutine run
implicit none
double precision :: energy_old, energy, pt2_max_before, ept2_before,delta_E
logical :: converged,state_following_casscf_save
integer :: iteration
converged = .False.
energy = 0.d0
mo_label = "MCSCF"
iteration = 1
state_following_casscf_save = state_following_casscf
state_following_casscf = .True.
touch state_following_casscf
ept2_before = 0.d0
if(adaptive_pt2_max)then
pt2_max = 0.005
SOFT_TOUCH pt2_max
endif
do while (.not.converged)
print*,'pt2_max = ',pt2_max
call run_stochastic_cipsi
energy_old = energy
energy = eone+etwo+ecore
pt2_max_before = pt2_max
call write_time(6)
call write_int(6,iteration,'CAS-SCF iteration = ')
call write_double(6,energy,'CAS-SCF energy = ')
if(n_states == 1)then
double precision :: E_PT2, PT2
call ezfio_get_casscf_energy_pt2(E_PT2)
call ezfio_get_casscf_energy(PT2)
PT2 -= E_PT2
call write_double(6,E_PT2,'E + PT2 energy = ')
call write_double(6,PT2,' PT2 = ')
call write_double(6,pt2_max,' PT2_MAX = ')
endif
print*,''
call write_double(6,norm_grad_vec2,'Norm of gradients = ')
call write_double(6,norm_grad_vec2_tab(1), ' Core-active gradients = ')
call write_double(6,norm_grad_vec2_tab(2), ' Core-virtual gradients = ')
call write_double(6,norm_grad_vec2_tab(3), ' Active-virtual gradients = ')
print*,''
call write_double(6,energy_improvement, 'Predicted energy improvement = ')
if(criterion_casscf == "energy")then
converged = dabs(energy_improvement) < thresh_scf
else if (criterion_casscf == "gradients")then
converged = norm_grad_vec2 < thresh_scf
else if (criterion_casscf == "e_pt2")then
delta_E = dabs(E_PT2 - ept2_before)
converged = dabs(delta_E) < thresh_casscf
endif
ept2_before = E_PT2
if(adaptive_pt2_max)then
pt2_max = dabs(energy_improvement / (pt2_relative_error))
pt2_max = min(pt2_max, pt2_max_before)
if(n_act_orb.ge.n_big_act_orb)then
pt2_max = max(pt2_max,pt2_min_casscf)
endif
endif
print*,''
call write_double(6,pt2_max, 'PT2_MAX for next iteration = ')
mo_coef = NewOrbs
mo_occ = occnum
call save_mos
if(.not.converged)then
iteration += 1
if(norm_grad_vec2.gt.0.01d0)then
N_det = N_states
else
N_det = max(N_det/8 ,N_states)
endif
psi_det = psi_det_sorted
psi_coef = psi_coef_sorted
read_wf = .True.
call clear_mo_map
SOFT_TOUCH mo_coef N_det psi_det psi_coef
if(adaptive_pt2_max)then
SOFT_TOUCH pt2_max
endif
if(iteration .gt. 3)then
state_following_casscf = state_following_casscf_save
soft_touch state_following_casscf
endif
endif
enddo
end

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BEGIN_PROVIDER [ logical, do_only_1h1p ]
&BEGIN_PROVIDER [ logical, do_only_cas ]
&BEGIN_PROVIDER [ logical, do_ddci ]
implicit none
BEGIN_DOC
! In the CAS case, all those are always false except do_only_cas
END_DOC
do_only_cas = .True.
do_only_1h1p = .False.
do_ddci = .False.
END_PROVIDER

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subroutine davidson_diag_sx_mat(N_st, u_in, energies)
implicit none
integer, intent(in) :: N_st
double precision, intent(out) :: u_in(nMonoEx+1,n_states_diag), energies(N_st)
integer :: i,j,N_st_tmp, dim_in, sze, N_st_diag_in
integer, allocatable :: list_guess(:)
double precision, allocatable :: H_jj(:)
logical :: converged
N_st_diag_in = n_states_diag
provide SXmatrix
sze = nMonoEx+1
dim_in = sze
allocate(H_jj(sze), list_guess(sze))
H_jj(1) = 0.d0
N_st_tmp = 1
list_guess(1) = 1
do j = 2, nMonoEx+1
H_jj(j) = SXmatrix(j,j)
if(H_jj(j).lt.0.d0)then
list_guess(N_st_tmp) = j
N_st_tmp += 1
endif
enddo
if(N_st_tmp .ne. N_st)then
print*,'Pb in davidson_diag_sx_mat'
print*,'N_st_tmp .ne. N_st'
print*,N_st_tmp, N_st
stop
endif
print*,'Number of possibly interesting states = ',N_st
print*,'Corresponding diagonal elements of the SX matrix '
u_in = 0.d0
do i = 1, min(N_st, N_st_diag_in)
! do i = 1, N_st
j = list_guess(i)
print*,'i,j',i,j
print*,'SX(i,i) = ',H_jj(j)
u_in(j,i) = 1.d0
enddo
call davidson_general(u_in,H_jj,energies,dim_in,sze,N_st,N_st_diag_in,converged,SXmatrix)
print*,'energies = ',energies
end

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use bitmasks
BEGIN_PROVIDER [real*8, D0tu, (n_act_orb,n_act_orb) ]
implicit none
BEGIN_DOC
! the first-order density matrix in the basis of the starting MOs.
! matrix is state averaged.
END_DOC
integer :: t,u
do u=1,n_act_orb
do t=1,n_act_orb
D0tu(t,u) = one_e_dm_mo_alpha_average( list_act(t), list_act(u) ) + &
one_e_dm_mo_beta_average ( list_act(t), list_act(u) )
enddo
enddo
END_PROVIDER
BEGIN_PROVIDER [real*8, P0tuvx, (n_act_orb,n_act_orb,n_act_orb,n_act_orb) ]
BEGIN_DOC
! The second-order density matrix in the basis of the starting MOs ONLY IN THE RANGE OF ACTIVE MOS
! The values are state averaged
!
! We use the spin-free generators of mono-excitations
! E_pq destroys q and creates p
! D_pq = <0|E_pq|0> = D_qp
! P_pqrs = 1/2 <0|E_pq E_rs - delta_qr E_ps|0>
!
! P0tuvx(p,q,r,s) = chemist notation : 1/2 <0|E_pq E_rs - delta_qr E_ps|0>
END_DOC
implicit none
integer :: t,u,v,x
integer :: tt,uu,vv,xx
integer :: mu,nu,istate,ispin,jspin,ihole,ipart,jhole,jpart
integer :: ierr
real*8 :: phase1,phase11,phase12,phase2,phase21,phase22
integer :: nu1,nu2,nu11,nu12,nu21,nu22
integer :: ierr1,ierr2,ierr11,ierr12,ierr21,ierr22
real*8 :: cI_mu(N_states),term
integer(bit_kind), dimension(N_int,2) :: det_mu, det_mu_ex
integer(bit_kind), dimension(N_int,2) :: det_mu_ex1, det_mu_ex11, det_mu_ex12
integer(bit_kind), dimension(N_int,2) :: det_mu_ex2, det_mu_ex21, det_mu_ex22
if (bavard) then
write(6,*) ' providing the 2 body RDM on the active part'
endif
P0tuvx= 0.d0
if(fast_2rdm)then
do istate=1,N_states
do x = 1, n_act_orb
do v = 1, n_act_orb
do u = 1, n_act_orb
do t = 1, n_act_orb
! 1 1 2 2 1 2 1 2
P0tuvx(t,u,v,x) = 0.5d0 * state_av_act_2_rdm_spin_trace_mo(t,v,u,x)
enddo
enddo
enddo
enddo
enddo
else
P0tuvx = P0tuvx_peter
endif
END_PROVIDER

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use bitmasks
BEGIN_PROVIDER [real*8, P0tuvx_peter, (n_act_orb,n_act_orb,n_act_orb,n_act_orb) ]
BEGIN_DOC
! the second-order density matrix in the basis of the starting MOs
! matrices are state averaged
!
! we use the spin-free generators of mono-excitations
! E_pq destroys q and creates p
! D_pq = <0|E_pq|0> = D_qp
! P_pqrs = 1/2 <0|E_pq E_rs - delta_qr E_ps|0>
!
END_DOC
implicit none
integer :: t,u,v,x,mu,nu,istate,ispin,jspin,ihole,ipart,jhole,jpart
integer :: ierr
real*8 :: phase1,phase11,phase12,phase2,phase21,phase22
integer :: nu1,nu2,nu11,nu12,nu21,nu22
integer :: ierr1,ierr2,ierr11,ierr12,ierr21,ierr22
real*8 :: cI_mu(N_states),term
integer(bit_kind), dimension(N_int,2) :: det_mu, det_mu_ex
integer(bit_kind), dimension(N_int,2) :: det_mu_ex1, det_mu_ex11, det_mu_ex12
integer(bit_kind), dimension(N_int,2) :: det_mu_ex2, det_mu_ex21, det_mu_ex22
if (bavard) then
write(6,*) ' providing density matrix P0'
endif
P0tuvx_peter = 0.d0
! first loop: we apply E_tu, once for D_tu, once for -P_tvvu
do mu=1,n_det
call det_extract(det_mu,mu,N_int)
do istate=1,n_states
cI_mu(istate)=psi_coef(mu,istate)
end do
do t=1,n_act_orb
ipart=list_act(t)
do u=1,n_act_orb
ihole=list_act(u)
! apply E_tu
call det_copy(det_mu,det_mu_ex1,N_int)
call det_copy(det_mu,det_mu_ex2,N_int)
call do_spinfree_mono_excitation(det_mu,det_mu_ex1 &
,det_mu_ex2,nu1,nu2,ihole,ipart,phase1,phase2,ierr1,ierr2)
! det_mu_ex1 is in the list
if (nu1.ne.-1) then
do istate=1,n_states
term=cI_mu(istate)*psi_coef(nu1,istate)*phase1
! and we fill P0_tvvu
do v=1,n_act_orb
P0tuvx_peter(t,v,v,u)-=term
end do
end do
end if
! det_mu_ex2 is in the list
if (nu2.ne.-1) then
do istate=1,n_states
term=cI_mu(istate)*psi_coef(nu2,istate)*phase2
do v=1,n_act_orb
P0tuvx_peter(t,v,v,u)-=term
end do
end do
end if
end do
end do
end do
! now we do the double excitation E_tu E_vx |0>
do mu=1,n_det
call det_extract(det_mu,mu,N_int)
do istate=1,n_states
cI_mu(istate)=psi_coef(mu,istate)
end do
do v=1,n_act_orb
ipart=list_act(v)
do x=1,n_act_orb
ihole=list_act(x)
! apply E_vx
call det_copy(det_mu,det_mu_ex1,N_int)
call det_copy(det_mu,det_mu_ex2,N_int)
call do_spinfree_mono_excitation(det_mu,det_mu_ex1 &
,det_mu_ex2,nu1,nu2,ihole,ipart,phase1,phase2,ierr1,ierr2)
! we apply E_tu to the first resultant determinant, thus E_tu E_vx |0>
if (ierr1.eq.1) then
do t=1,n_act_orb
jpart=list_act(t)
do u=1,n_act_orb
jhole=list_act(u)
call det_copy(det_mu_ex1,det_mu_ex11,N_int)
call det_copy(det_mu_ex1,det_mu_ex12,N_int)
call do_spinfree_mono_excitation(det_mu_ex1,det_mu_ex11&
,det_mu_ex12,nu11,nu12,jhole,jpart,phase11,phase12,ierr11,ierr12)
if (nu11.ne.-1) then
do istate=1,n_states
P0tuvx_peter(t,u,v,x)+=cI_mu(istate)*psi_coef(nu11,istate)&
*phase11*phase1
end do
end if
if (nu12.ne.-1) then
do istate=1,n_states
P0tuvx_peter(t,u,v,x)+=cI_mu(istate)*psi_coef(nu12,istate)&
*phase12*phase1
end do
end if
end do
end do
end if
! we apply E_tu to the second resultant determinant
if (ierr2.eq.1) then
do t=1,n_act_orb
jpart=list_act(t)
do u=1,n_act_orb
jhole=list_act(u)
call det_copy(det_mu_ex2,det_mu_ex21,N_int)
call det_copy(det_mu_ex2,det_mu_ex22,N_int)
call do_spinfree_mono_excitation(det_mu_ex2,det_mu_ex21&
,det_mu_ex22,nu21,nu22,jhole,jpart,phase21,phase22,ierr21,ierr22)
if (nu21.ne.-1) then
do istate=1,n_states
P0tuvx_peter(t,u,v,x)+=cI_mu(istate)*psi_coef(nu21,istate)&
*phase21*phase2
end do
end if
if (nu22.ne.-1) then
do istate=1,n_states
P0tuvx_peter(t,u,v,x)+=cI_mu(istate)*psi_coef(nu22,istate)&
*phase22*phase2
end do
end if
end do
end do
end if
end do
end do
end do
! we average by just dividing by the number of states
do x=1,n_act_orb
do v=1,n_act_orb
do u=1,n_act_orb
do t=1,n_act_orb
P0tuvx_peter(t,u,v,x)*=0.5D0/dble(N_states)
end do
end do
end do
end do
END_PROVIDER

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use bitmasks
subroutine do_signed_mono_excitation(key1,key2,nu,ihole,ipart, &
ispin,phase,ierr)
BEGIN_DOC
! we create the mono-excitation, and determine, if possible,
! the phase and the number in the list of determinants
END_DOC
implicit none
integer(bit_kind) :: key1(N_int,2),key2(N_int,2)
integer(bit_kind), allocatable :: keytmp(:,:)
integer :: exc(0:2,2,2),ihole,ipart,ierr,nu,ispin
real*8 :: phase
logical :: found
allocate(keytmp(N_int,2))
nu=-1
phase=1.D0
ierr=0
call det_copy(key1,key2,N_int)
! write(6,*) ' key2 before excitation ',ihole,' -> ',ipart,' spin = ',ispin
! call print_det(key2,N_int)
call do_single_excitation(key2,ihole,ipart,ispin,ierr)
! write(6,*) ' key2 after ',ihole,' -> ',ipart,' spin = ',ispin
! call print_det(key2,N_int)
! write(6,*) ' excitation ',ihole,' -> ',ipart,' gives ierr = ',ierr
if (ierr.eq.1) then
! excitation is possible
! get the phase
call get_single_excitation(key1,key2,exc,phase,N_int)
! get the number in the list
found=.false.
nu=0
!TODO BOTTLENECK
do while (.not.found)
nu+=1
if (nu.gt.N_det) then
! the determinant is possible, but not in the list
found=.true.
nu=-1
else
call det_extract(keytmp,nu,N_int)
integer :: i,ii
found=.true.
do ii=1,2
do i=1,N_int
if (keytmp(i,ii).ne.key2(i,ii)) then
found=.false.
end if
end do
end do
end if
end do
end if
!
! we found the new string, the phase, and possibly the number in the list
!
end subroutine do_signed_mono_excitation
subroutine det_extract(key,nu,Nint)
BEGIN_DOC
! extract a determinant from the list of determinants
END_DOC
implicit none
integer :: ispin,i,nu,Nint
integer(bit_kind) :: key(Nint,2)
do ispin=1,2
do i=1,Nint
key(i,ispin)=psi_det(i,ispin,nu)
end do
end do
end subroutine det_extract
subroutine det_copy(key1,key2,Nint)
use bitmasks ! you need to include the bitmasks_module.f90 features
BEGIN_DOC
! copy a determinant from key1 to key2
END_DOC
implicit none
integer :: ispin,i,Nint
integer(bit_kind) :: key1(Nint,2),key2(Nint,2)
do ispin=1,2
do i=1,Nint
key2(i,ispin)=key1(i,ispin)
end do
end do
end subroutine det_copy
subroutine do_spinfree_mono_excitation(key_in,key_out1,key_out2 &
,nu1,nu2,ihole,ipart,phase1,phase2,ierr,jerr)
BEGIN_DOC
! we create the spin-free mono-excitation E_pq=(a^+_p a_q + a^+_P a_Q)
! we may create two determinants as result
!
END_DOC
implicit none
integer(bit_kind) :: key_in(N_int,2),key_out1(N_int,2)
integer(bit_kind) :: key_out2(N_int,2)
integer :: ihole,ipart,ierr,jerr,nu1,nu2
integer :: ispin
real*8 :: phase1,phase2
! write(6,*) ' applying E_',ipart,ihole,' on determinant '
! call print_det(key_in,N_int)
! spin alpha
ispin=1
call do_signed_mono_excitation(key_in,key_out1,nu1,ihole &
,ipart,ispin,phase1,ierr)
! if (ierr.eq.1) then
! write(6,*) ' 1 result is ',nu1,phase1
! call print_det(key_out1,N_int)
! end if
! spin beta
ispin=2
call do_signed_mono_excitation(key_in,key_out2,nu2,ihole &
,ipart,ispin,phase2,jerr)
! if (jerr.eq.1) then
! write(6,*) ' 2 result is ',nu2,phase2
! call print_det(key_out2,N_int)
! end if
end subroutine do_spinfree_mono_excitation

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subroutine driver_optorb
implicit none
end

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program print_2rdm
implicit none
BEGIN_DOC
! get the active part of the bielectronic energy on a given wave function.
!
! useful to test the active part of the spin trace 2 rdms
END_DOC
!no_vvvv_integrals = .True.
read_wf = .True.
!touch read_wf no_vvvv_integrals
!call routine
!call routine_bis
call print_grad
end
subroutine print_grad
implicit none
integer :: i
do i = 1, nMonoEx
if(dabs(gradvec2(i)).gt.1.d-5)then
print*,''
print*,i,gradvec2(i),excit(:,i)
endif
enddo
end
subroutine routine
integer :: i,j,k,l
integer :: ii,jj,kk,ll
double precision :: accu(4),twodm,thr,act_twodm2,integral,get_two_e_integral
thr = 1.d-10
accu = 0.d0
do ll = 1, n_act_orb
l = list_act(ll)
do kk = 1, n_act_orb
k = list_act(kk)
do jj = 1, n_act_orb
j = list_act(jj)
do ii = 1, n_act_orb
i = list_act(ii)
integral = get_two_e_integral(i,j,k,l,mo_integrals_map)
accu(1) += state_av_act_2_rdm_spin_trace_mo(ii,jj,kk,ll) * integral
enddo
enddo
enddo
enddo
print*,'accu = ',accu(1)
end

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BEGIN_PROVIDER [real*8, gradvec_old, (nMonoEx)]
BEGIN_DOC
! calculate the orbital gradient <Psi| H E_pq |Psi> by hand, i.e. for
! each determinant I we determine the string E_pq |I> (alpha and beta
! separately) and generate <Psi|H E_pq |I>
! sum_I c_I <Psi|H E_pq |I> is then the pq component of the orbital
! gradient
! E_pq = a^+_pa_q + a^+_Pa_Q
END_DOC
implicit none
integer :: ii,tt,aa,indx,ihole,ipart,istate
real*8 :: res
do indx=1,nMonoEx
ihole=excit(1,indx)
ipart=excit(2,indx)
call calc_grad_elem(ihole,ipart,res)
gradvec_old(indx)=res
end do
real*8 :: norm_grad
norm_grad=0.d0
do indx=1,nMonoEx
norm_grad+=gradvec_old(indx)*gradvec_old(indx)
end do
norm_grad=sqrt(norm_grad)
if (bavard) then
write(6,*)
write(6,*) ' Norm of the orbital gradient (via <0|EH|0>) : ', norm_grad
write(6,*)
endif
END_PROVIDER
subroutine calc_grad_elem(ihole,ipart,res)
BEGIN_DOC
! eq 18 of Siegbahn et al, Physica Scripta 1980
! we calculate 2 <Psi| H E_pq | Psi>, q=hole, p=particle
END_DOC
implicit none
integer :: ihole,ipart,mu,iii,ispin,ierr,nu,istate
real*8 :: res
integer(bit_kind), allocatable :: det_mu(:,:),det_mu_ex(:,:)
real*8 :: i_H_psi_array(N_states),phase
allocate(det_mu(N_int,2))
allocate(det_mu_ex(N_int,2))
res=0.D0
do mu=1,n_det
! get the string of the determinant
call det_extract(det_mu,mu,N_int)
do ispin=1,2
! do the monoexcitation on it
call det_copy(det_mu,det_mu_ex,N_int)
call do_signed_mono_excitation(det_mu,det_mu_ex,nu &
,ihole,ipart,ispin,phase,ierr)
if (ierr.eq.1) then
call i_H_psi(det_mu_ex,psi_det,psi_coef,N_int &
,N_det,N_det,N_states,i_H_psi_array)
do istate=1,N_states
res+=i_H_psi_array(istate)*psi_coef(mu,istate)*phase
end do
end if
end do
end do
! state-averaged gradient
res*=2.D0/dble(N_states)
end subroutine calc_grad_elem

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use bitmasks
BEGIN_PROVIDER [ integer, nMonoEx ]
BEGIN_DOC
! Number of single excitations
END_DOC
implicit none
nMonoEx=n_core_inact_orb*n_act_orb+n_core_inact_orb*n_virt_orb+n_act_orb*n_virt_orb
END_PROVIDER
BEGIN_PROVIDER [integer, n_c_a_prov]
&BEGIN_PROVIDER [integer, n_c_v_prov]
&BEGIN_PROVIDER [integer, n_a_v_prov]
implicit none
n_c_a_prov = n_core_inact_orb * n_act_orb
n_c_v_prov = n_core_inact_orb * n_virt_orb
n_a_v_prov = n_act_orb * n_virt_orb
END_PROVIDER
BEGIN_PROVIDER [integer, excit, (2,nMonoEx)]
&BEGIN_PROVIDER [character*3, excit_class, (nMonoEx)]
&BEGIN_PROVIDER [integer, list_idx_c_a, (3,n_c_a_prov) ]
&BEGIN_PROVIDER [integer, list_idx_c_v, (3,n_c_v_prov) ]
&BEGIN_PROVIDER [integer, list_idx_a_v, (3,n_a_v_prov) ]
&BEGIN_PROVIDER [integer, mat_idx_c_a, (n_core_inact_orb,n_act_orb)
&BEGIN_PROVIDER [integer, mat_idx_c_v, (n_core_inact_orb,n_virt_orb)
&BEGIN_PROVIDER [integer, mat_idx_a_v, (n_act_orb,n_virt_orb)
BEGIN_DOC
! a list of the orbitals involved in the excitation
END_DOC
implicit none
integer :: i,t,a,ii,tt,aa,indx,indx_tmp
indx=0