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beginning to compute perturbative rdm

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This commit is contained in:
Emmanuel Giner 2019-07-05 13:05:11 +02:00
parent 62f82b03c0
commit fd118fcc75
4 changed files with 178 additions and 2 deletions
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1
src/cipsi/NEED
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@ -3,3 +3,4 @@ zmq
mpi
davidson_undressed
iterations
two_body_rdm

1
src/cipsi/run_selection_slave.irp.f
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@ -61,7 +61,6 @@ subroutine run_selection_slave(thread,iproc,energy)
! Only first time
bsize = min(N, (elec_alpha_num * (mo_num-elec_alpha_num))**2)
call create_selection_buffer(bsize, bsize*2, buf)
! call create_selection_buffer(N, N*2, buf2)
buffer_ready = .True.
else
ASSERT (N == buf%N)

166
src/cipsi/selection.irp.f
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@ -1,5 +1,10 @@
use bitmasks
BEGIN_PROVIDER [logical , pert_2rdm ]
implicit none
pert_2rdm = .False.
END_PROVIDER
BEGIN_PROVIDER [ double precision, pt2_match_weight, (N_states) ]
implicit none
BEGIN_DOC
@ -248,6 +253,7 @@ subroutine select_singles_and_doubles(i_generator,hole_mask,particle_mask,fock_d
integer,allocatable :: tmp_array(:)
integer(bit_kind), allocatable :: minilist(:, :, :), fullminilist(:, :, :)
logical, allocatable :: banned(:,:,:), bannedOrb(:,:)
double precision, allocatable :: coef_fullminilist(:,:)
double precision, allocatable :: mat(:,:,:)
@ -546,6 +552,12 @@ subroutine select_singles_and_doubles(i_generator,hole_mask,particle_mask,fock_d
allocate (fullminilist (N_int, 2, fullinteresting(0)), &
minilist (N_int, 2, interesting(0)) )
if(pert_2rdm)then
allocate(coef_fullminilist(fullinteresting(0),N_states))
do i=1,fullinteresting(0)
coef_fullminilist(i,:) = psi_coef_sorted(fullinteresting(i),:)
enddo
endif
do i=1,fullinteresting(0)
fullminilist(1:N_int,1:2,i) = psi_det_sorted(1:N_int,1:2,fullinteresting(i))
enddo
@ -597,12 +609,19 @@ subroutine select_singles_and_doubles(i_generator,hole_mask,particle_mask,fock_d
call splash_pq(mask, sp, minilist, i_generator, interesting(0), bannedOrb, banned, mat, interesting)
call fill_buffer_double(i_generator, sp, h1, h2, bannedOrb, banned, fock_diag_tmp, E0, pt2, variance, norm, mat, buf)
if(.not.pert_2rdm)then
call fill_buffer_double(i_generator, sp, h1, h2, bannedOrb, banned, fock_diag_tmp, E0, pt2, variance, norm, mat, buf)
else
call fill_buffer_double_rdm(i_generator, sp, h1, h2, bannedOrb, banned, fock_diag_tmp, E0, pt2, variance, norm, mat, buf,fullminilist, coef_fullminilist, fullinteresting(0))
endif
end if
enddo
if(s1 /= s2) monoBdo = .false.
enddo
deallocate(fullminilist,minilist)
if(pert_2rdm)then
deallocate(coef_fullminilist)
endif
enddo
enddo
deallocate(preinteresting, prefullinteresting, interesting, fullinteresting)
@ -633,6 +652,10 @@ subroutine fill_buffer_double(i_generator, sp, h1, h2, bannedOrb, banned, fock_d
double precision :: E_shift
logical, external :: detEq
double precision, allocatable :: values(:)
integer, allocatable :: keys(:,;)
integer, :: nkeys
if(sp == 3) then
s1 = 1
@ -746,6 +769,147 @@ subroutine fill_buffer_double(i_generator, sp, h1, h2, bannedOrb, banned, fock_d
end
subroutine fill_buffer_double_rdm(i_generator, sp, h1, h2, bannedOrb, banned, fock_diag_tmp, E0, pt2, variance, norm, mat, buf, psi_det_connection, psi_coef_connection, n_det_connection)
use bitmasks
use selection_types
implicit none
integer, intent(in) :: n_det_connection
double precision, intent(in) :: psi_coef_connection(n_det_connection,N_states)
integer(bit_kind), intent(in) :: psi_det_connection(N_int,2,n_det_connection)
integer, intent(in) :: i_generator, sp, h1, h2
double precision, intent(in) :: mat(N_states, mo_num, mo_num)
logical, intent(in) :: bannedOrb(mo_num, 2), banned(mo_num, mo_num)
double precision, intent(in) :: fock_diag_tmp(mo_num)
double precision, intent(in) :: E0(N_states)
double precision, intent(inout) :: pt2(N_states)
double precision, intent(inout) :: variance(N_states)
double precision, intent(inout) :: norm(N_states)
type(selection_buffer), intent(inout) :: buf
logical :: ok
integer :: s1, s2, p1, p2, ib, j, istate
integer(bit_kind) :: mask(N_int, 2), det(N_int, 2)
double precision :: e_pert, delta_E, val, Hii, sum_e_pert, tmp, alpha_h_psi, coef(N_states)
double precision, external :: diag_H_mat_elem_fock
double precision :: E_shift
logical, external :: detEq
double precision, allocatable :: values(:)
integer, allocatable :: keys(:,;)
integer, :: nkeys
integer :: sze_buffer
sze_buffer = 5 * mo_num ** 2
allocate(keys(4,sze_buffer),values(sze_buffer))
nkeys = 0
if(sp == 3) then
s1 = 1
s2 = 2
else
s1 = sp
s2 = sp
end if
call apply_holes(psi_det_generators(1,1,i_generator), s1, h1, s2, h2, mask, ok, N_int)
E_shift = 0.d0
if (h0_type == 'SOP') then
j = det_to_occ_pattern(i_generator)
E_shift = psi_det_Hii(i_generator) - psi_occ_pattern_Hii(j)
endif
do p1=1,mo_num
if(bannedOrb(p1, s1)) cycle
ib = 1
if(sp /= 3) ib = p1+1
do p2=ib,mo_num
! -----
! /!\ Generating only single excited determinants doesn't work because a
! determinant generated by a single excitation may be doubly excited wrt
! to a determinant of the future. In that case, the determinant will be
! detected as already generated when generating in the future with a
! double excitation.
!
! if (.not.do_singles) then
! if ((h1 == p1) .or. (h2 == p2)) then
! cycle
! endif
! endif
!
! if (.not.do_doubles) then
! if ((h1 /= p1).and.(h2 /= p2)) then
! cycle
! endif
! endif
! -----
if(bannedOrb(p2, s2)) cycle
if(banned(p1,p2)) cycle
if( sum(abs(mat(1:N_states, p1, p2))) == 0d0) cycle
call apply_particles(mask, s1, p1, s2, p2, det, ok, N_int)
if (do_only_cas) then
integer, external :: number_of_holes, number_of_particles
if (number_of_particles(det)>0) then
cycle
endif
if (number_of_holes(det)>0) then
cycle
endif
endif
if (do_ddci) then
logical, external :: is_a_two_holes_two_particles
if (is_a_two_holes_two_particles(det)) then
cycle
endif
endif
if (do_only_1h1p) then
logical, external :: is_a_1h1p
if (.not.is_a_1h1p(det)) cycle
endif
Hii = diag_H_mat_elem_fock(psi_det_generators(1,1,i_generator),det,fock_diag_tmp,N_int)
sum_e_pert = 0d0
do istate=1,N_states
delta_E = E0(istate) - Hii + E_shift
alpha_h_psi = mat(istate, p1, p2)
val = alpha_h_psi + alpha_h_psi
tmp = dsqrt(delta_E * delta_E + val * val)
if (delta_E < 0.d0) then
tmp = -tmp
endif
e_pert = 0.5d0 * (tmp - delta_E)
coef(istate) = e_pert / alpha_h_psi
pt2(istate) = pt2(istate) + e_pert
variance(istate) = variance(istate) + alpha_h_psi * alpha_h_psi
norm(istate) = norm(istate) + coef * coef
if (weight_selection /= 5) then
! Energy selection
sum_e_pert = sum_e_pert + e_pert * selection_weight(istate)
else
! Variance selection
sum_e_pert = sum_e_pert - alpha_h_psi * alpha_h_psi * selection_weight(istate)
endif
end do
call give_2rdm_pert_contrib(det,coef,psi_det_connection,psi_coef_connection,n_det_connection,nkeys,keys,values,sze_buff)
if(sum_e_pert <= buf%mini) then
call add_to_selection_buffer(buf, det, sum_e_pert)
end if
end do
end do
end
subroutine splash_pq(mask, sp, det, i_gen, N_sel, bannedOrb, banned, mat, interesting)
use bitmasks
implicit none

12
src/cipsi/update_2rdm.irp.f Normal file
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@ -0,0 +1,12 @@
use bitmasks
subroutine give_2rdm_pert_contrib(det,coef,psi_det_connection,psi_coef_connection,n_det_connection,nkeys,keys,values,sze_buff)
implicit none
integer, intent(in) :: n_det_connection,nkeys,sze_buff
double precision, intent(in) :: coef(N_states)
integer(bit_kind), intent(in) :: det(N_int,2)
integer(bit_kind), intent(in) :: psi_det_connection(N_int,2,n_det_connection)
integer, intent(in) :: keys(4,sze_buff)
double precision, intent(in) :: values(sze_buff)
end