2019-01-25 11:39:31 +01:00
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use map_module
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!! AO Map
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!! ======
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BEGIN_PROVIDER [ type(map_type), ao_integrals_erf_map ]
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implicit none
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BEGIN_DOC
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! |AO| integrals
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END_DOC
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integer(key_kind) :: key_max
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integer(map_size_kind) :: sze
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call two_e_integrals_index(ao_num,ao_num,ao_num,ao_num,key_max)
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sze = key_max
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call map_init(ao_integrals_erf_map,sze)
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print*, 'AO map initialized : ', sze
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END_PROVIDER
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BEGIN_PROVIDER [ integer, ao_integrals_erf_cache_min ]
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&BEGIN_PROVIDER [ integer, ao_integrals_erf_cache_max ]
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implicit none
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BEGIN_DOC
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! Min and max values of the AOs for which the integrals are in the cache
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END_DOC
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ao_integrals_erf_cache_min = max(1,ao_num - 63)
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ao_integrals_erf_cache_max = ao_num
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END_PROVIDER
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BEGIN_PROVIDER [ double precision, ao_integrals_erf_cache, (0:64*64*64*64) ]
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use map_module
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implicit none
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BEGIN_DOC
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! Cache of |AO| integrals for fast access
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END_DOC
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PROVIDE ao_two_e_integrals_erf_in_map
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integer :: i,j,k,l,ii
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integer(key_kind) :: idx
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real(integral_kind) :: integral
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!$OMP PARALLEL DO PRIVATE (i,j,k,l,idx,ii,integral)
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do l=ao_integrals_erf_cache_min,ao_integrals_erf_cache_max
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do k=ao_integrals_erf_cache_min,ao_integrals_erf_cache_max
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do j=ao_integrals_erf_cache_min,ao_integrals_erf_cache_max
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do i=ao_integrals_erf_cache_min,ao_integrals_erf_cache_max
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!DIR$ FORCEINLINE
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call two_e_integrals_index(i,j,k,l,idx)
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!DIR$ FORCEINLINE
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call map_get(ao_integrals_erf_map,idx,integral)
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ii = l-ao_integrals_erf_cache_min
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ii = ior( ishft(ii,6), k-ao_integrals_erf_cache_min)
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ii = ior( ishft(ii,6), j-ao_integrals_erf_cache_min)
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ii = ior( ishft(ii,6), i-ao_integrals_erf_cache_min)
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ao_integrals_erf_cache(ii) = integral
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enddo
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enddo
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enddo
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enddo
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!$OMP END PARALLEL DO
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END_PROVIDER
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subroutine insert_into_ao_integrals_erf_map(n_integrals,buffer_i, buffer_values)
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use map_module
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implicit none
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BEGIN_DOC
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! Create new entry into |AO| map
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END_DOC
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integer, intent(in) :: n_integrals
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integer(key_kind), intent(inout) :: buffer_i(n_integrals)
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real(integral_kind), intent(inout) :: buffer_values(n_integrals)
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call map_append(ao_integrals_erf_map, buffer_i, buffer_values, n_integrals)
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end
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double precision function get_ao_two_e_integral_erf(i,j,k,l,map) result(result)
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use map_module
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implicit none
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BEGIN_DOC
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! Gets one |AO| two-electron integral from the |AO| map
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END_DOC
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integer, intent(in) :: i,j,k,l
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integer(key_kind) :: idx
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type(map_type), intent(inout) :: map
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integer :: ii
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real(integral_kind) :: tmp
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2020-05-12 18:48:51 +02:00
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logical, external :: ao_two_e_integral_zero
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2019-01-25 11:39:31 +01:00
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PROVIDE ao_two_e_integrals_erf_in_map ao_integrals_erf_cache ao_integrals_erf_cache_min
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!DIR$ FORCEINLINE
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2020-05-12 19:10:12 +02:00
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if (ao_two_e_integral_zero(i,j,k,l)) then
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2019-01-25 11:39:31 +01:00
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tmp = 0.d0
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else if (ao_two_e_integral_erf_schwartz(i,k)*ao_two_e_integral_erf_schwartz(j,l) < ao_integrals_threshold) then
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tmp = 0.d0
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else
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ii = l-ao_integrals_erf_cache_min
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ii = ior(ii, k-ao_integrals_erf_cache_min)
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ii = ior(ii, j-ao_integrals_erf_cache_min)
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ii = ior(ii, i-ao_integrals_erf_cache_min)
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if (iand(ii, -64) /= 0) then
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!DIR$ FORCEINLINE
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call two_e_integrals_index(i,j,k,l,idx)
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!DIR$ FORCEINLINE
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call map_get(map,idx,tmp)
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tmp = tmp
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else
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ii = l-ao_integrals_erf_cache_min
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ii = ior( ishft(ii,6), k-ao_integrals_erf_cache_min)
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ii = ior( ishft(ii,6), j-ao_integrals_erf_cache_min)
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ii = ior( ishft(ii,6), i-ao_integrals_erf_cache_min)
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tmp = ao_integrals_erf_cache(ii)
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endif
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endif
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result = tmp
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end
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subroutine get_ao_two_e_integrals_erf(j,k,l,sze,out_val)
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use map_module
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BEGIN_DOC
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! Gets multiple |AO| two-electron integral from the |AO| map .
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! All i are retrieved for j,k,l fixed.
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END_DOC
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implicit none
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integer, intent(in) :: j,k,l, sze
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real(integral_kind), intent(out) :: out_val(sze)
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integer :: i
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integer(key_kind) :: hash
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double precision :: thresh
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2020-05-12 18:48:51 +02:00
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logical, external :: ao_one_e_integral_zero
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2019-01-25 11:39:31 +01:00
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PROVIDE ao_two_e_integrals_erf_in_map ao_integrals_erf_map
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thresh = ao_integrals_threshold
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2020-05-12 18:48:51 +02:00
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if (ao_one_e_integral_zero(j,l)) then
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2019-01-25 11:39:31 +01:00
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out_val = 0.d0
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return
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endif
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double precision :: get_ao_two_e_integral_erf
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do i=1,sze
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out_val(i) = get_ao_two_e_integral_erf(i,j,k,l,ao_integrals_erf_map)
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enddo
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end
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subroutine get_ao_two_e_integrals_erf_non_zero(j,k,l,sze,out_val,out_val_index,non_zero_int)
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use map_module
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implicit none
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BEGIN_DOC
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! Gets multiple |AO| two-electron integrals from the |AO| map .
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! All non-zero i are retrieved for j,k,l fixed.
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END_DOC
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integer, intent(in) :: j,k,l, sze
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real(integral_kind), intent(out) :: out_val(sze)
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integer, intent(out) :: out_val_index(sze),non_zero_int
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integer :: i
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integer(key_kind) :: hash
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double precision :: thresh,tmp
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2020-05-12 18:48:51 +02:00
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logical, external :: ao_one_e_integral_zero
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2019-01-25 11:39:31 +01:00
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PROVIDE ao_two_e_integrals_erf_in_map
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thresh = ao_integrals_threshold
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non_zero_int = 0
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2020-05-12 18:48:51 +02:00
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if (ao_one_e_integral_zero(j,l)) then
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2019-01-25 11:39:31 +01:00
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out_val = 0.d0
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return
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endif
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non_zero_int = 0
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do i=1,sze
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integer, external :: ao_l4
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double precision, external :: ao_two_e_integral_erf
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!DIR$ FORCEINLINE
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if (ao_two_e_integral_erf_schwartz(i,k)*ao_two_e_integral_erf_schwartz(j,l) < thresh) then
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cycle
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endif
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call two_e_integrals_index(i,j,k,l,hash)
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call map_get(ao_integrals_erf_map, hash,tmp)
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if (dabs(tmp) < thresh ) cycle
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non_zero_int = non_zero_int+1
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out_val_index(non_zero_int) = i
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out_val(non_zero_int) = tmp
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enddo
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end
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function get_ao_erf_map_size()
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implicit none
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integer (map_size_kind) :: get_ao_erf_map_size
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BEGIN_DOC
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! Returns the number of elements in the |AO| map
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END_DOC
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get_ao_erf_map_size = ao_integrals_erf_map % n_elements
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end
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subroutine clear_ao_erf_map
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implicit none
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BEGIN_DOC
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! Frees the memory of the |AO| map
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END_DOC
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call map_deinit(ao_integrals_erf_map)
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FREE ao_integrals_erf_map
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end
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subroutine dump_ao_integrals_erf(filename)
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use map_module
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implicit none
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BEGIN_DOC
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! Save to disk the |AO| erf integrals
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END_DOC
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character*(*), intent(in) :: filename
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integer(cache_key_kind), pointer :: key(:)
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real(integral_kind), pointer :: val(:)
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integer*8 :: i,j, n
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call ezfio_set_work_empty(.False.)
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open(unit=66,file=filename,FORM='unformatted')
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write(66) integral_kind, key_kind
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write(66) ao_integrals_erf_map%sorted, ao_integrals_erf_map%map_size, &
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ao_integrals_erf_map%n_elements
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do i=0_8,ao_integrals_erf_map%map_size
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write(66) ao_integrals_erf_map%map(i)%sorted, ao_integrals_erf_map%map(i)%map_size,&
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ao_integrals_erf_map%map(i)%n_elements
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enddo
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do i=0_8,ao_integrals_erf_map%map_size
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key => ao_integrals_erf_map%map(i)%key
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val => ao_integrals_erf_map%map(i)%value
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n = ao_integrals_erf_map%map(i)%n_elements
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write(66) (key(j), j=1,n), (val(j), j=1,n)
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enddo
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close(66)
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end
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integer function load_ao_integrals_erf(filename)
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implicit none
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BEGIN_DOC
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! Read from disk the |AO| erf integrals
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END_DOC
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character*(*), intent(in) :: filename
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integer*8 :: i
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integer(cache_key_kind), pointer :: key(:)
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real(integral_kind), pointer :: val(:)
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integer :: iknd, kknd
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integer*8 :: n, j
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load_ao_integrals_erf = 1
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open(unit=66,file=filename,FORM='unformatted',STATUS='UNKNOWN')
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read(66,err=98,end=98) iknd, kknd
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if (iknd /= integral_kind) then
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print *, 'Wrong integrals kind in file :', iknd
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stop 1
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endif
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if (kknd /= key_kind) then
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print *, 'Wrong key kind in file :', kknd
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stop 1
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endif
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read(66,err=98,end=98) ao_integrals_erf_map%sorted, ao_integrals_erf_map%map_size,&
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ao_integrals_erf_map%n_elements
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do i=0_8, ao_integrals_erf_map%map_size
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read(66,err=99,end=99) ao_integrals_erf_map%map(i)%sorted, &
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ao_integrals_erf_map%map(i)%map_size, ao_integrals_erf_map%map(i)%n_elements
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call cache_map_reallocate(ao_integrals_erf_map%map(i),ao_integrals_erf_map%map(i)%map_size)
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enddo
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do i=0_8, ao_integrals_erf_map%map_size
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key => ao_integrals_erf_map%map(i)%key
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val => ao_integrals_erf_map%map(i)%value
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n = ao_integrals_erf_map%map(i)%n_elements
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read(66,err=99,end=99) (key(j), j=1,n), (val(j), j=1,n)
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enddo
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call map_sort(ao_integrals_erf_map)
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load_ao_integrals_erf = 0
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return
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99 continue
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call map_deinit(ao_integrals_erf_map)
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98 continue
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stop 'Problem reading ao_integrals_erf_map file in work/'
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end
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