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qp2/src/mo_two_e_ints/four_idx_novvvv.irp.f
2021-07-01 11:25:51 +02:00

190 lines
5.6 KiB
Fortran

!BEGIN_PROVIDER [ logical, no_vvvv_integrals ]
! implicit none
! BEGIN_DOC
! If `True`, computes all integrals except for the integrals having 3 or 4 virtual indices
! END_DOC
!
! no_vvvv_integrals = .False.
!END_PROVIDER
BEGIN_PROVIDER [ double precision, mo_coef_novirt, (ao_num,n_core_inact_act_orb) ]
implicit none
BEGIN_DOC
! MO coefficients without virtual MOs
END_DOC
integer :: j,jj
do j=1,n_core_inact_act_orb
jj = list_core_inact_act(j)
mo_coef_novirt(:,j) = mo_coef(:,jj)
enddo
END_PROVIDER
subroutine ao_to_mo_novirt(A_ao,LDA_ao,A_mo,LDA_mo)
implicit none
BEGIN_DOC
! Transform A from the |AO| basis to the |MO| basis excluding virtuals
!
! $C^\dagger.A_{ao}.C$
END_DOC
integer, intent(in) :: LDA_ao,LDA_mo
double precision, intent(in) :: A_ao(LDA_ao,ao_num)
double precision, intent(out) :: A_mo(LDA_mo,n_core_inact_act_orb)
double precision, allocatable :: T(:,:)
allocate ( T(ao_num,n_core_inact_act_orb) )
!DIR$ ATTRIBUTES ALIGN : $IRP_ALIGN :: T
call dgemm('N','N', ao_num, n_core_inact_act_orb, ao_num, &
1.d0, A_ao,LDA_ao, &
mo_coef_novirt, size(mo_coef_novirt,1), &
0.d0, T, size(T,1))
call dgemm('T','N', n_core_inact_act_orb, n_core_inact_act_orb, ao_num,&
1.d0, mo_coef_novirt,size(mo_coef_novirt,1), &
T, ao_num, &
0.d0, A_mo, size(A_mo,1))
deallocate(T)
end
subroutine four_idx_novvvv
print*,'********'
print*,'********'
print*,'********'
print*,'WARNING :: Using four_idx_novvvv, and we are not sure that this routine is not bugged ...'
print*,'********'
print*,'********'
print*,'********'
use map_module
implicit none
BEGIN_DOC
! Retransform MO integrals for next CAS-SCF step
END_DOC
print*,'Using partial transformation'
print*,'It will not transform all integrals with at least 3 indices within the virtuals'
integer :: i,j,k,l,n_integrals
double precision, allocatable :: f(:,:,:), f2(:,:,:), d(:,:), T(:,:,:,:), T2(:,:,:,:)
double precision, external :: get_ao_two_e_integral
integer(key_kind), allocatable :: idx(:)
real(integral_kind), allocatable :: values(:)
integer :: p,q,r,s
double precision :: c
allocate( T(n_core_inact_act_orb,n_core_inact_act_orb,ao_num,ao_num) , &
T2(n_core_inact_act_orb,n_core_inact_act_orb,ao_num,ao_num) )
!$OMP PARALLEL DEFAULT(NONE) &
!$OMP SHARED(mo_num,ao_num,T,n_core_inact_act_orb, mo_coef_transp, &
!$OMP mo_integrals_threshold,mo_coef,mo_integrals_map, &
!$OMP list_core_inact_act,T2,ao_integrals_map) &
!$OMP PRIVATE(i,j,k,l,p,q,r,s,idx,values,n_integrals, &
!$OMP f,f2,d,c)
allocate(f(ao_num,ao_num,ao_num), f2(ao_num,ao_num,ao_num), d(mo_num,mo_num), &
idx(mo_num*mo_num), values(mo_num*mo_num) )
! <aa|vv>
!$OMP DO
do s=1,ao_num
do r=1,ao_num
do q=1,ao_num
do p=1,r
f (p,q,r) = get_ao_two_e_integral(p,q,r,s,ao_integrals_map)
f (r,q,p) = f(p,q,r)
enddo
enddo
enddo
do r=1,ao_num
do q=1,ao_num
do p=1,ao_num
f2(p,q,r) = f(p,r,q)
enddo
enddo
enddo
! f (p,q,r) = <pq|rs>
! f2(p,q,r) = <pr|qs>
do r=1,ao_num
call ao_to_mo_novirt(f (1,1,r),size(f ,1),T (1,1,r,s),size(T,1))
call ao_to_mo_novirt(f2(1,1,r),size(f2,1),T2(1,1,r,s),size(T,1))
enddo
! T (i,j,p,q) = <ij|rs>
! T2(i,j,p,q) = <ir|js>
enddo
!$OMP END DO
!$OMP DO
do j=1,n_core_inact_act_orb
do i=1,n_core_inact_act_orb
do s=1,ao_num
do r=1,ao_num
f (r,s,1) = T (i,j,r,s)
f2(r,s,1) = T2(i,j,r,s)
enddo
enddo
call ao_to_mo(f ,size(f ,1),d,size(d,1))
n_integrals = 0
do l=1,mo_num
do k=1,mo_num
n_integrals+=1
call two_e_integrals_index(list_core_inact_act(i),list_core_inact_act(j),k,l,idx(n_integrals))
values(n_integrals) = d(k,l)
enddo
enddo
call map_append(mo_integrals_map, idx, values, n_integrals)
call ao_to_mo(f2,size(f2,1),d,size(d,1))
n_integrals = 0
do l=1,mo_num
do k=1,mo_num
n_integrals+=1
call two_e_integrals_index(list_core_inact_act(i),k,list_core_inact_act(j),l,idx(n_integrals))
values(n_integrals) = d(k,l)
enddo
enddo
call map_append(mo_integrals_map, idx, values, n_integrals)
enddo
enddo
!$OMP END DO
deallocate(f,f2,d,idx,values)
!$OMP END PARALLEL
deallocate(T,T2)
call map_sort(mo_integrals_map)
call map_unique(mo_integrals_map)
call map_shrink(mo_integrals_map,real(mo_integrals_threshold,integral_kind))
end
subroutine four_idx_novvvv2
use bitmasks
implicit none
integer :: i
integer(bit_kind) :: mask_ijkl(N_int,4)
print*, '<ix|ix>'
do i = 1,N_int
mask_ijkl(i,1) = core_inact_act_bitmask_4(i,1)
mask_ijkl(i,2) = full_ijkl_bitmask_4(i,1)
mask_ijkl(i,3) = core_inact_act_bitmask_4(i,1)
mask_ijkl(i,4) = full_ijkl_bitmask_4(i,1)
enddo
call add_integrals_to_map(mask_ijkl)
print*, '<ii|vv>'
do i = 1,N_int
mask_ijkl(i,1) = core_inact_act_bitmask_4(i,1)
mask_ijkl(i,2) = core_inact_act_bitmask_4(i,1)
mask_ijkl(i,3) = virt_bitmask(i,1)
mask_ijkl(i,4) = virt_bitmask(i,1)
enddo
call add_integrals_to_map(mask_ijkl)
end