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Optimized S2

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This commit is contained in:
Anthony Scemama 2018-09-21 10:02:55 +02:00
parent d807a6e7e3
commit 98b2384d43
2 changed files with 29 additions and 18 deletions
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4
src/DavidsonUndressed/diag_restart_save_all_states.irp.f
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@ -9,8 +9,6 @@ subroutine routine
implicit none
call diagonalize_CI
print*,'N_det = ',N_det
call save_wavefunction_general(N_det,N_states_diag,psi_det_sorted,size(psi_coef_sorted,1),psi_coef_sorted)
call save_wavefunction_general(N_det,N_states,psi_det_sorted,size(psi_coef_sorted,1),psi_coef_sorted)
end

43
src/Determinants/occ_pattern.irp.f
View File

@ -51,16 +51,27 @@ subroutine occ_pattern_to_dets(o,d,sze,n_alpha,Nint)
integer(bit_kind),intent(in) :: o(Nint,2)
integer(bit_kind),intent(out) :: d(Nint,2,sze)
integer :: i, k, nt, na, nd, amax
integer :: i, l, k, nt, na, nd, amax
integer :: list_todo(2*n_alpha)
integer :: list_a(2*n_alpha)
integer :: ishift
amax = n_alpha
do k=1,Nint
amax -= popcnt( o(k,2) )
enddo
call bitstring_to_list(o(1,1), list_todo, nt, Nint)
nt = 0
ishift = 2
do i=1,Nint
l = o(i,1)
do while (l /= 0_bit_kind)
nt = nt+1
list_todo(nt) = ishift+popcnt(l-1_bit_kind) - popcnt(l)
l = iand(l,l-1_bit_kind)
enddo
ishift = ishift + bit_kind_size
enddo
na = 0
nd = 0
@ -69,7 +80,7 @@ subroutine occ_pattern_to_dets(o,d,sze,n_alpha,Nint)
sze = nd
integer :: ne(2), l
integer :: ne(2)
l=0
do i=1,nd
ne(1) = 0
@ -90,6 +101,7 @@ subroutine occ_pattern_to_dets(o,d,sze,n_alpha,Nint)
end
recursive subroutine rec_occ_pattern_to_dets(list_todo,nt,list_a,na,d,nd,sze,amax,Nint)
use bitmasks
implicit none
@ -98,6 +110,7 @@ recursive subroutine rec_occ_pattern_to_dets(list_todo,nt,list_a,na,d,nd,sze,am
integer,intent(inout) :: list_todo(nt)
integer, intent(inout) :: list_a(na+1),nd
integer(bit_kind),intent(inout) :: d(Nint,2,sze)
integer :: iint, ipos, i,j,k
if (na == amax) then
nd += 1
@ -106,14 +119,17 @@ recursive subroutine rec_occ_pattern_to_dets(list_todo,nt,list_a,na,d,nd,sze,am
print *, irp_here, ': sze = ', sze
stop 'bug in rec_occ_pattern_to_dets'
endif
if (na > 0) then
call list_to_bitstring( d(1,1,nd), list_a, na, Nint)
endif
if (nt > 0) then
call list_to_bitstring( d(1,2,nd), list_todo, nt, Nint)
endif
do i=1,na
iint = ishft(list_a(i)-1,-bit_kind_shift) + 1
ipos = list_a(i)-ishft((iint-1),bit_kind_shift)-1
d(iint,1,nd) = ibset( d(iint,1,nd), ipos )
enddo
do i=1,nt
iint = ishft(list_todo(i)-1,-bit_kind_shift) + 1
ipos = list_todo(i)-ishft((iint-1),bit_kind_shift)-1
d(iint,2,nd) = ibset( d(iint,2,nd), ipos )
enddo
else
integer :: i, j, k
integer, allocatable :: list_todo_tmp(:)
allocate (list_todo_tmp(nt))
do i=1,nt
@ -317,7 +333,7 @@ subroutine make_s2_eigenfunction
smax = s
ithread=0
!$ ithread = omp_get_thread_num()
!$OMP DO
!$OMP DO SCHEDULE (dynamic,1000)
do i=1,N_occ_pattern
call occ_pattern_to_dets_size(psi_occ_pattern(1,1,i),s,elec_alpha_num,N_int)
s += 1
@ -330,10 +346,7 @@ subroutine make_s2_eigenfunction
do j=1,s
if (.not. is_in_wavefunction(d(1,1,j), N_int) ) then
N_det_new += 1
do k=1,N_int
det_buffer(k,1,N_det_new) = d(k,1,j)
det_buffer(k,2,N_det_new) = d(k,2,j)
enddo
det_buffer(:,:,N_det_new) = d(:,:,j)
if (N_det_new == bufsze) then
call fill_H_apply_buffer_no_selection(bufsze,det_buffer,N_int,ithread)
N_det_new = 0