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|
MODULE bse_basic_structures
!this module describes the basis structures
!which are obtained from the DFT and GW code
USE kinds, ONLY : DP
REAL(kind=DP), ALLOCATABLE :: vg_q(:) ! contains the elements V(G) of the Coulomb potential obtained upon integration over q
COMPLEX(kind=DP), ALLOCATABLE :: u_trans(:,:,:)!unitarian transformation from bloch wfcs to wannier'
TYPE wannier_o
! this structures contains the overlap between the wannier square modules
integer :: numb_v ! number of valence bands for the two spin channels
real(kind=dp),dimension(:,:), pointer ::o(:,:) ! overlap matrix (numb_v*numb_v)
END TYPE
TYPE ii_mat
integer :: numb_v! number of valence bands for the two spin channels
integer :: np_max ! maximum number of overlapping wannier orbitals for a given v
integer, dimension (:,:), pointer :: iimat(:,:) ! (np_max,numb_v) the rows of this matrix contain for each iv,
!the set of jv for which o_mat(iv,jv)>=s_bse
END TYPE
TYPE vww_prod
!this type contains the v*wv*wv' products needed for the exchange part of the
!direct interaction term of the excitonic Hamiltonian
integer :: numb_v! number of valence bands for the two spin channels
integer :: npw ! number of plane wave per processor
integer :: np_max ! maximum number of overlapping wannier orbitals for a given v
complex(kind=dp), dimension (:,:,:), pointer :: vww(:,:,:) ! v*wv*wv' product in G space (npw,np_max,numb_v)
END TYPE
TYPE bse_z
! this type contains the z terms to build up the Wc term of the excitonic Hamiltonian
!z_beta_v_v'=(v*phi_beta)*wv*Wv'
integer :: numb_v! number of valence bands for the two spin channels
integer :: np_max ! maximum number of overlapping wannier orbitals for a given v
integer :: numw_prod ! dimension of the polarizability basis
real(kind=dp), dimension (:,:,:), pointer :: z(:,:,:) ! v*phi_beta*wv*wv' product (numw_prod,np_max,numb_v)
END TYPE
TYPE v_state
! this type contains the valence states wavefunctions and single particle energies
!
integer :: nspin ! number of spin channels
integer :: numb_v(2) ! number valence state
integer :: npw ! number of g-vectors per processor
real(kind=dp), dimension (:,:),pointer :: esp(:,:) ! single particle energies (numb_v,nspin)
complex(kind=dp), dimension(:,:,:), pointer :: wfn(:,:,:) ! wave function in G space (npw,numb_v,nspin)
integer ::gstart
END TYPE
TYPE v_state_r
! this type contains the valence states wfns in real space on the dual grid
integer :: nspin ! number of spin channels
integer :: numb_v(2) ! number of valence states
integer :: nrxxt ! number of r points per processor
real(kind=dp), dimension(:,:,:), pointer :: wfnrt(:,:,:) ! wave function in r-spce (dual grid) (nrxxt,numb_v,nspin)
END TYPE
TYPE c_state
! this type contains the valence states wavefunctions and single particle energies
!
integer :: nspin ! number of spin channels
integer :: numb_c ! number valence state
integer :: npw ! number of g-vectors per processor
real(kind=dp), dimension (:,:),pointer :: esp(:) ! single particle energies (numb_c)
complex(kind=dp), dimension(:,:), pointer :: wfn(:,:) ! wave function in G space (npw,numb_c)
integer ::gstart
END TYPE
TYPE c_state_r
! this type contains the valence states wfns in real space on the dual grid
integer :: nspin ! number of spin channels
integer :: numb_c ! number of valence states
integer :: nrxxt ! number of r points per processor
real(kind=dp), dimension(:,:), pointer :: wfnrt(:,:) ! wave function in r-spce (dual grid) (nrxxt,numb_c)
END TYPE
CONTAINS
subroutine initialize_v_state_r(v_wfnr)
implicit none
type(v_state_r) :: v_wfnr
nullify(v_wfnr%wfnrt)
return
end subroutine
subroutine initialize_v_state(v_wfn)
implicit none
type(v_state) :: v_wfn
nullify(v_wfn%wfn)
nullify(v_wfn%esp)
return
end subroutine
subroutine initialize_c_state_r(c_wfnr)
implicit none
type(c_state_r) :: c_wfnr
nullify(c_wfnr%wfnrt)
return
end subroutine
subroutine initialize_c_state(c_wfn)
implicit none
type(c_state) :: c_wfn
nullify(c_wfn%wfn)
nullify(c_wfn%esp)
return
end subroutine
subroutine initialize_wannier_o(o)
implicit none
type(wannier_o) :: o
nullify(o%o)
return
end subroutine
subroutine initialize_imat(iimat)
implicit none
type(ii_mat) :: iimat
nullify(iimat%iimat)
return
end subroutine
subroutine initialize_vww_prod(vww)
implicit none
type(vww_prod) :: vww
nullify(vww%vww)
return
end subroutine
subroutine initialize_bse_z(z)
implicit none
type(bse_z) :: z
nullify(z%z)
return
end subroutine
subroutine free_v_state_r(v_wfnr)
implicit none
type(v_state_r) :: v_wfnr
if(associated(v_wfnr%wfnrt)) deallocate (v_wfnr%wfnrt)
nullify(v_wfnr%wfnrt)
return
end subroutine
subroutine free_v_state(v_wfn)
implicit none
type(v_state) :: v_wfn
if(associated(v_wfn%wfn)) deallocate (v_wfn%wfn)
nullify(v_wfn%wfn)
if(associated(v_wfn%esp)) deallocate (v_wfn%esp)
nullify(v_wfn%esp)
return
end subroutine
subroutine free_c_state_r(c_wfnr)
implicit none
type(c_state_r) :: c_wfnr
if(associated(c_wfnr%wfnrt)) deallocate (c_wfnr%wfnrt)
nullify(c_wfnr%wfnrt)
return
end subroutine
subroutine free_c_state(c_wfn)
implicit none
type(c_state) :: c_wfn
if(associated(c_wfn%wfn)) deallocate (c_wfn%wfn)
nullify(c_wfn%wfn)
if(associated(c_wfn%esp)) deallocate (c_wfn%esp)
nullify(c_wfn%esp)
return
end subroutine
subroutine free_wannier_o(o)
implicit none
type(wannier_o) :: o
if(associated(o%o)) deallocate (o%o)
nullify(o%o)
return
end subroutine
subroutine free_imat(iimat)
implicit none
type(ii_mat) :: iimat
if(associated(iimat%iimat)) deallocate (iimat%iimat)
nullify(iimat%iimat)
return
end subroutine
subroutine free_vww_prod(vww)
implicit none
type(vww_prod) :: vww
if(associated(vww%vww)) deallocate (vww%vww)
nullify(vww%vww)
return
end subroutine
subroutine free_bse_z(z)
implicit none
type(bse_z) :: z
if(associated(z%z)) deallocate (z%z)
nullify(z%z)
return
end subroutine
subroutine make_v_state(numb_v,v)
use io_global, ONLY : stdout, ionode
USE gvect, ONLY : gstart
USE lsda_mod, ONLY : nspin
use wavefunctions, ONLY : evc
use io_files, ONLY : prefix, iunwfc, tmp_dir
USE io_files, ONLY: nwordwfc
USE wvfct, ONLY : nbnd, npwx,npw,et
use mp_world, ONLY : mpime
USE mp, ONLY :mp_barrier
USE mp_world, ONLY : world_comm
implicit none
type(v_state) :: v
integer :: numb_v(2)
integer :: is,ivmax,iv
logical :: debug
debug=.false.
call start_clock('make_v_state')
if(debug) then
write(*,*) 'make_v_state: in, mpime=',mpime
! debug MARGHE
write(*,*) 'nbnd=', nbnd
write(*,*) 'numb_v(1)=', numb_v(1)
endif
v%nspin=nspin
v%numb_v(:)=numb_v(:)
v%npw=npw
v%gstart=gstart
allocate( evc( npwx, nbnd ) )
if (nspin==1) then
ivmax= v%numb_v(1)
else
ivmax=max(v%numb_v(1),v%numb_v(2))
endif
allocate( v%wfn(v%npw,ivmax,v%nspin))
allocate( v%esp(ivmax,v%nspin))
do is=1,nspin
call davcio(evc,2*nwordwfc,iunwfc,is,-1)
do iv=1,v%numb_v(is)
v%wfn(1:v%npw,1:v%numb_v(is),is)=evc(1:v%npw,1:v%numb_v(is))
enddo
v%esp(1:v%numb_v(is),is)=et(1:v%numb_v(is),is)
enddo
deallocate(evc)
if(debug) then
write(*,*) 'make_v_state: out, mpime=',mpime
endif
call mp_barrier( world_comm )
call stop_clock('make_v_state')
return
end subroutine
subroutine make_c_state(numb_v,c)
use io_global, ONLY : stdout, ionode
USE gvect, ONLY : gstart
USE lsda_mod, ONLY : nspin
use wavefunctions, ONLY : evc
use io_files, ONLY : prefix, iunwfc, tmp_dir
USE io_files, ONLY: nwordwfc
USE wvfct, ONLY : nbnd, npwx,npw,et
use mp_world, ONLY : mpime
USE mp, ONLY :mp_barrier
USE mp_world, ONLY : world_comm
implicit none
type(c_state) :: c
integer :: numb_v(2)
integer :: is,ic
logical :: debug
debug=.false.
call start_clock('make_c_state')
if(debug) then
write(*,*) 'make_c_state: in, mpime=',mpime
! debug MARGHE
write(*,*) 'nbnd=', nbnd
write(*,*) 'numb_v(1)=', numb_v(1)
endif
c%nspin=nspin
c%numb_c=nbnd-numb_v(1)
c%npw=npw
c%gstart=gstart
allocate( evc( npwx, nbnd ) )
! if (nspin==1) then
! ivmax= v%numb_v(1)
! else
! ivmax=max(v%numb_v(1),v%numb_v(2))
! endif
allocate( c%wfn(c%npw,c%numb_c))
allocate( c%esp(c%numb_c))
do is=1,nspin
call davcio(evc,2*nwordwfc,iunwfc,is,-1)
do ic=1,c%numb_c
c%wfn(1:c%npw,1:c%numb_c)=evc(1:c%npw,numb_v(is)+1:nbnd)
enddo
c%esp(1:c%numb_c)=et(numb_v(is)+1:nbnd,is)
enddo
deallocate(evc)
if(debug) then
write(*,*) 'make_c_state: out, mpime=',mpime
endif
call mp_barrier( world_comm )
call stop_clock('make_c_state')
return
end subroutine
subroutine c_times_cstate(v,cstate_in,cstate_out)
! this subroutine multiplies each line ic of the c_state vector by the ic real component of the v vector
use kinds, only:DP
!use bse_wannier, only: qpe_imin,qpe_imax
implicit none
type(c_state),intent(in) :: cstate_in
type(c_state),intent(out) :: cstate_out
integer :: ib
real(kind=DP) :: v(cstate_in%numb_c)
do ib=1,cstate_in%numb_c
cstate_out%wfn(1:cstate_out%npw,ib)=cmplx(v(ib),0.d0)* cstate_out%wfn(1:cstate_in%npw,ib)
enddo
return
end subroutine
subroutine v_wfng_to_wfnr(vwfng,fc,vwfnr)
!this subroutine FFT the valence wfns to real space in the dual grid
USE kinds, ONLY : DP
USE fft_custom_gwl
USE bse_wannier, ONLY : dual_bse
USE wvfct, ONLY : g2kin, npwx, npw, nbnd, nbndx
USE io_global, ONLY : stdout, ionode, ionode_id
USE mp_world, ONLY : mpime, nproc,world_comm
USE mp_wave, ONLY : mergewf,splitwf
USE mp, ONLY : mp_sum
USE gvect
USE wavefunctions, ONLY : psic
implicit none
type(v_state) vwfng
type(v_state_r) vwfnr
type(fft_cus) :: fc
COMPLEX(kind=DP), allocatable :: vwfng_t(:,:,:)
COMPLEX(kind=DP), ALLOCATABLE :: evc_g(:)
integer :: ii,is
integer ::ivmax
call start_clock('v_wfng_to_wfnr')
if (vwfng%nspin==1) then
ivmax= vwfng%numb_v(1)
else
ivmax=max(vwfng%numb_v(1),vwfng%numb_v(2))
endif
allocate(vwfng_t(fc%npwt,ivmax,vwfng%nspin))
vwfnr%nspin=vwfng%nspin
vwfnr%nrxxt=fc%nrxxt
vwfnr%numb_v=vwfng%numb_v
allocate(vwfnr%wfnrt(vwfnr%nrxxt,ivmax,vwfnr%nspin))
allocate(evc_g(fc%ngmt_g ))
if(fc%dual_t==4.d0) then
do is=1,vwfng%nspin
vwfng_t(1:fc%npwt,1:vwfng%numb_v(is),is)= vwfng%wfn(1:fc%npwt,1:vwfng%numb_v(is),is)
enddo
else
do is=1,vwfng%nspin
call reorderwfp_col(vwfng%numb_v(is),vwfng%npw,fc%npwt,vwfng%wfn(1,1,is),vwfng_t(1,1,is),vwfng%npw,&
& fc%npwt,ig_l2g,fc%ig_l2gt,fc%ngmt_g,mpime, nproc,world_comm )
!do ii=1,vwfng%numb_v(is)
! call mergewf(vwfng%wfn(:,ii,is),evc_g,vwfng%npw,ig_l2g,mpime,nproc,ionode_id,intra_pool_comm)
! call splitwf(vwfng_t(:,ii,is),evc_g,fc%npwt,fc%ig_l2gt,mpime,nproc,ionode_id,intra_pool_comm)
!enddo
enddo
endif
do is=1,vwfng%nspin
do ii=1,vwfng%numb_v(is),2
psic(1:fc%nrxxt)=(0.d0,0.d0)
if (ii==vwfng%numb_v(is)) then
psic(fc%nlt(1:fc%npwt)) = vwfng_t(1:fc%npwt,ii,is)
psic(fc%nltm(1:fc%npwt)) = CONJG( vwfng_t(1:fc%npwt,ii,is) )
else
psic(fc%nlt(1:fc%npwt))=vwfng_t(1:fc%npwt,ii,is)+(0.d0,1.d0)*vwfng_t(1:fc%npwt,ii+1,is)
psic(fc%nltm(1:fc%npwt)) =CONJG(vwfng_t(1:fc%npwt,ii,is))+(0.d0,1.d0)*CONJG(vwfng_t(1:fc%npwt,ii+1,is))
endif
CALL cft3t( fc, psic, fc%nr1t, fc%nr2t, fc%nr3t, fc%nrx1t, fc%nrx2t, fc%nrx3t, 2 )
vwfnr%wfnrt(1:fc%nrxxt,ii,is)= DBLE(psic(1:fc%nrxxt))
if(ii/=vwfng%numb_v(is)) vwfnr%wfnrt(1:fc%nrxxt,ii+1,is)= DIMAG(psic(1:fc%nrxxt))
enddo
enddo
deallocate(evc_g)
call stop_clock('v_wfng_to_wfnr')
return
end subroutine
subroutine c_wfng_to_wfnr(cwfng,fc,cwfnr)
!this subroutine FFT the conduction wfns to real space in the dual grid
USE kinds, ONLY : DP
USE fft_custom_gwl
USE bse_wannier, ONLY : dual_bse, num_nbndv
USE wvfct, ONLY : g2kin, npwx, npw, nbnd, nbndx
USE io_global, ONLY : stdout, ionode, ionode_id
USE mp_world, ONLY : mpime, nproc,world_comm
USE mp_wave, ONLY : mergewf,splitwf
USE mp, ONLY : mp_sum
USE gvect
USE wavefunctions, ONLY : psic
implicit none
type(c_state) cwfng
type(c_state_r) cwfnr
type(fft_cus) :: fc
COMPLEX(kind=DP), allocatable :: cwfng_t(:,:)
COMPLEX(kind=DP), ALLOCATABLE :: evc_g(:)
integer :: ii,is
integer ::icmax
call start_clock('c_wfng_to_wfnr')
! if (vwfng%nspin==1) then
! ivmax= vwfng%numb_v(1)
! else
! ivmax=max(vwfng%numb_v(1),vwfng%numb_v(2))
! endif
! icmax=nbnd-num_nbndv(1)
allocate(cwfng_t(fc%npwt,cwfng%numb_c))
cwfnr%nrxxt=fc%nrxxt
cwfnr%numb_c=cwfng%numb_c
allocate(cwfnr%wfnrt(cwfnr%nrxxt,cwfnr%numb_c))
allocate(evc_g(fc%ngmt_g ))
if(fc%dual_t==4.d0) then
cwfng_t(1:fc%npwt,1:cwfng%numb_c)= cwfng%wfn(1:fc%npwt,1:cwfng%numb_c)
else
call reorderwfp_col(cwfng%numb_c,cwfng%npw,fc%npwt,cwfng%wfn(1,1),cwfng_t(1,1),cwfng%npw,&
& fc%npwt,ig_l2g,fc%ig_l2gt,fc%ngmt_g,mpime, nproc,world_comm )
endif
do ii=1,cwfng%numb_c,2
psic(1:fc%nrxxt)=(0.d0,0.d0)
if (ii==cwfng%numb_c) then
psic(fc%nlt(1:fc%npwt)) = cwfng_t(1:fc%npwt,ii)
psic(fc%nltm(1:fc%npwt)) = CONJG( cwfng_t(1:fc%npwt,ii) )
else
psic(fc%nlt(1:fc%npwt))=cwfng_t(1:fc%npwt,ii)+(0.d0,1.d0)*cwfng_t(1:fc%npwt,ii+1)
psic(fc%nltm(1:fc%npwt)) =CONJG(cwfng_t(1:fc%npwt,ii))+(0.d0,1.d0)*CONJG(cwfng_t(1:fc%npwt,ii+1))
endif
CALL cft3t( fc, psic, fc%nr1t, fc%nr2t, fc%nr3t, fc%nrx1t, fc%nrx2t, fc%nrx3t, 2 )
cwfnr%wfnrt(1:fc%nrxxt,ii)= DBLE(psic(1:fc%nrxxt))
if(ii/=cwfng%numb_c) cwfnr%wfnrt(1:fc%nrxxt,ii+1)= DIMAG(psic(1:fc%nrxxt))
enddo
deallocate(evc_g)
call stop_clock('c_wfng_to_wfnr')
return
end subroutine
subroutine write_wfnr(wfnr)
! this subroutines writes on disk the type v_state_r for every processor
! USE io_files, ONLY : find_free_unit, prefix
USE io_files, ONLY : tmp_dir,prefix
USE mp_world, ONLY : mpime
implicit none
INTEGER, EXTERNAL :: find_free_unit
type(v_state_r) wfnr
INTEGER :: iw, iunw,is
CHARACTER(5) :: nproc
iunw=find_free_unit()
write(nproc,'(5i1)') &
& mpime/10000,mod(mpime,10000)/1000,mod(mpime,1000)/100,mod(mpime,100)/10,mod(mpime,10)
open( unit=iunw, file=trim(tmp_dir)//trim(prefix)//'.wfnr_t.'// nproc , status='unknown',form='unformatted')
write(iunw) wfnr%numb_v
write(iunw) wfnr%nspin
write(iunw) wfnr%nrxxt
do is=1,wfnr%nspin
do iw=1,wfnr%numb_v(is)
write(iunw) wfnr%wfnrt(1:wfnr%nrxxt,iw,is)
enddo
enddo
close(iunw)
end subroutine
subroutine read_wfnr(wfnr)
! this subroutines reads from disk the type v_state_r for every processor
! USE io_files, ONLY : find_free_unit, prefix
USE io_files, ONLY : tmp_dir, prefix
USE mp_world, ONLY : mpime
implicit none
INTEGER, EXTERNAL :: find_free_unit
type(v_state_r) wfnr
INTEGER :: iw, iunw,is
CHARACTER(5) :: nproc
iunw=find_free_unit()
write(nproc,'(5i1)') &
& mpime/10000,mod(mpime,10000)/1000,mod(mpime,1000)/100,mod(mpime,100)/10,mod(mpime,10)
open( unit=iunw, file=trim(tmp_dir)//trim(prefix)//'.wfnr_t.'// nproc , status='old',form='unformatted')
read(iunw) wfnr%numb_v
read(iunw) wfnr%nspin
read(iunw) wfnr%nrxxt
do is=1,wfnr%nspin
do iw=1,wfnr%numb_v(is)
read(iunw) wfnr%wfnrt(1:wfnr%nrxxt,iw,is)
enddo
enddo
close(iunw)
end subroutine
subroutine write_cwfnr(wfnr)
! this subroutines writes on disk the type v_state_r for every processor
! USE io_files, ONLY : find_free_unit, prefix
USE io_files, ONLY : tmp_dir,prefix
USE mp_world, ONLY : mpime
implicit none
INTEGER, EXTERNAL :: find_free_unit
type(c_state_r) wfnr
INTEGER :: iw, iunw,is
CHARACTER(5) :: nproc
iunw=find_free_unit()
write(nproc,'(5i1)') &
& mpime/10000,mod(mpime,10000)/1000,mod(mpime,1000)/100,mod(mpime,100)/10,mod(mpime,10)
open( unit=iunw, file=trim(tmp_dir)//trim(prefix)//'.cwfnr_t.'// nproc , status='unknown',form='unformatted')
write(iunw) wfnr%numb_c
write(iunw) wfnr%nrxxt
do iw=1,wfnr%numb_c
write(iunw) wfnr%wfnrt(1:wfnr%nrxxt,iw)
enddo
close(iunw)
end subroutine
subroutine read_cwfnr(wfnr)
! this subroutines reads from disk the type v_state_r for every processor
! USE io_files, ONLY : find_free_unit, prefix
USE io_files, ONLY : tmp_dir,prefix
USE mp_world, ONLY : mpime
implicit none
INTEGER, EXTERNAL :: find_free_unit
type(c_state_r) wfnr
INTEGER :: iw, iunw,is
CHARACTER(5) :: nproc
iunw=find_free_unit()
write(nproc,'(5i1)') &
& mpime/10000,mod(mpime,10000)/1000,mod(mpime,1000)/100,mod(mpime,100)/10,mod(mpime,10)
open( unit=iunw, file=trim(tmp_dir)//trim(prefix)//'.cwfnr_t.'// nproc , status='old',form='unformatted')
read(iunw) wfnr%numb_c
read(iunw) wfnr%nrxxt
do iw=1,wfnr%numb_c
read(iunw) wfnr%wfnrt(1:wfnr%nrxxt,iw)
enddo
close(iunw)
end subroutine
subroutine read_omat(ispin,o)
! this subroutines reads the overlap matrix written by pw4gww
! USE io_files, ONLY : find_free_unit, prefix
USE io_files, ONLY : prefix,tmp_dir
USE io_global, ONLY : ionode, ionode_id
USE mp, ONLY : mp_bcast
USE kinds, ONLY : DP
USE mp_world, ONLY : world_comm
implicit none
INTEGER, EXTERNAL :: find_free_unit
type(wannier_o) :: o
integer ispin
integer ii,iunu
real(kind=DP) :: s_bse
if(ionode) then
iunu = find_free_unit()
if (ispin==1) open(unit=iunu,file=trim(tmp_dir)//trim(prefix)//'.wbse1',status='old',form='unformatted')
if (ispin==2) open(unit=iunu,file=trim(tmp_dir)//trim(prefix)//'.wbse2',status='old',form='unformatted')
read(iunu) o%numb_v
read(iunu) s_bse
allocate(o%o(o%numb_v,o%numb_v))
do ii=1,o%numb_v
read(iunu) o%o(1:o%numb_v,ii)
enddo
close(iunu)
endif
CALL mp_bcast(o%numb_v, ionode_id , world_comm)
if(.not.ionode) then
allocate(o%o(o%numb_v,o%numb_v))
endif
CALL mp_bcast(o%o, ionode_id, world_comm )
return
end subroutine
subroutine read_iimat(iimat,ispin)
! this subroutines reads the ii matrix written by pw4gww
! USE io_files, ONLY : find_free_unit, prefix
USE io_files, ONLY : prefix, tmp_dir
USE io_global, ONLY : ionode, ionode_id
USE mp, ONLY : mp_bcast
USE mp_world, ONLY : world_comm
USE kinds, ONLY : DP
implicit none
INTEGER, EXTERNAL :: find_free_unit
type(ii_mat) :: iimat
integer ispin
real(kind=DP) :: s_bse
integer :: iv,iuni
logical :: debug
debug=.false.
if(ionode) then
iuni = find_free_unit()
if (ispin==1) open(unit=iuni,file=trim(tmp_dir)//trim(prefix)//'.iwwbse1',status='old',form='unformatted')
if (ispin==2) open(unit=iuni,file=trim(tmp_dir)//trim(prefix)//'.iwwbse2',status='old',form='unformatted')
read(iuni) iimat%numb_v
read(iuni) s_bse
read(iuni) iimat%np_max
if(debug) then
write(*,*) 'From read_iimat numb_v',iimat%numb_v
write(*,*) 'From read_iimat s_bse', s_bse
write(*,*) 'From read_iimat np_max',iimat%np_max
endif
endif
CALL mp_bcast(iimat%numb_v, ionode_id, world_comm )
CALL mp_bcast(iimat%np_max, ionode_id, world_comm )
allocate(iimat%iimat(iimat%np_max,iimat%numb_v))
if(ionode) then
if(debug) then
write(*,*) 'iimat matrix'
endif
do iv=1, iimat%numb_v
read(iuni) iimat%iimat(1:iimat%np_max,iv)
if(debug) then
write(*,*) 'iv=',iv, iimat%iimat(1:iimat%np_max,iv)
endif
enddo
close(iuni)
endif
CALL mp_bcast(iimat%iimat, ionode_id, world_comm )
return
end subroutine
subroutine read_vww_prod(ispin,numb_v,npw,np_max,iimat,vww)
!each processor reads the vww(G) written by pw4gww
!be careful to check that the iimat that is passed to the subroutine is the related to the correct spin channel
! USE io_files, ONLY : find_free_unit, prefix,diropn
USE io_files, ONLY : prefix,diropn
USE io_global, ONLY : stdout, ionode
implicit none
INTEGER, EXTERNAL :: find_free_unit
type(vww_prod) :: vww
type(ii_mat) :: iimat
integer :: numb_v,npw,np_max,ispin
integer iv, ip, iungprod, ii,iundebug,i
logical exst,debug
debug=.false.
if(debug) then
iundebug = find_free_unit()
open(iundebug,file='vww_bse.dat')
endif
vww%numb_v=numb_v
vww%npw=npw
vww%np_max=np_max
allocate(vww%vww(npw,np_max,numb_v))
vww%vww(1:npw,1:np_max,1:numb_v)=dcmplx(0.d0,0.d0)
iungprod = find_free_unit()
if (ispin==1) CALL diropn( iungprod, 'vww_bse1.',npw*2, exst)
if (ispin==2) CALL diropn( iungprod, 'vww_bse2.',npw*2, exst)
! if(debug) then
! if(ionode) write(stdout,*) 'Read_vww_prod #1'
! endif
ii=0
do iv=1,numb_v
do ip=1, np_max
if(iimat%iimat(ip,iv)>0) then
! if(debug) then
! if(ionode) write(stdout,*) 'Read_vww_prod #', ii
! endif
ii=ii+1
call davcio(vww%vww(:,ip,iv),npw*2,iungprod,ii,-1)
if(debug) then
if(ionode) then
do i=1,npw
write(iundebug,*) vww%vww(i,ip,iv)
enddo
endif
endif
endif
enddo
enddo
close(iungprod)
if (debug) close(iundebug)
return
end subroutine
subroutine read_z(ispin,iimat,z)
! the ionode reads the z matrix and broadcast its value to the rest of the
! processors.
!be careful to check that the iimat that is passed to the subroutine is the related to the correct spin channel
! USE io_files, ONLY : find_free_unit, prefix
USE io_files, ONLY : prefix, tmp_dir
USE io_global, ONLY : ionode, ionode_id
USE mp, ONLY : mp_bcast, mp_barrier
USE mp_world, ONLY : world_comm
USE kinds, ONLY : DP
USE io_global, ONLY : stdout,ionode
implicit none
INTEGER, EXTERNAL :: find_free_unit
type(bse_z) ::z
type(ii_mat) :: iimat
! integer :: numw_prod
integer ::ispin
real(kind=DP) :: s_bse
integer :: iv,iunz,ii
logical debug
debug=.false.
if(ionode) then
iunz = find_free_unit()
if(debug) then
if(ionode) write(stdout,*) 'read_z ',trim(tmp_dir)//trim(prefix)//'.zbse1'
endif
if (ispin==1) open(unit=iunz,file=trim(tmp_dir)//trim(prefix)//'.zbse1',status='old',form='unformatted')
if (ispin==2) open(unit=iunz,file=trim(tmp_dir)//trim(prefix)//'.zbse2',status='old',form='unformatted')
read(iunz) z%numb_v
read(iunz) s_bse
read(iunz) z%np_max
read(iunz) z%numw_prod
if(debug) then
if(ionode) write(stdout,*) 'z%numb_v=', z%numb_v
if(ionode) write(stdout,*) 's_bse=',s_bse
if(ionode) write(stdout,*) 'z%np_max=',z%np_max
if(ionode) write(stdout,*) 'z%numw_prod=', z%numw_prod
endif
endif
CALL mp_bcast(z%numb_v, ionode_id, world_comm )
CALL mp_bcast(z%np_max, ionode_id, world_comm )
CALL mp_bcast(z%numw_prod, ionode_id, world_comm )
call mp_barrier(world_comm)
allocate(z%z(z%numw_prod,z%np_max,z%numb_v))
if(ionode) then
do iv=1, z%numb_v
do ii=1,z%np_max
if(debug) then
if(ionode) write(stdout,*)'read_z, ii=',ii
endif
if (iimat%iimat(ii,iv)>0) read(iunz) z%z(:,ii,iv)
enddo
enddo
endif
if(debug) then
if(ionode) write(stdout,*) 'read_z #1'
endif
!
CALL mp_bcast(z%z, ionode_id, world_comm )
call mp_barrier(world_comm)
if(debug) then
if(ionode) write(stdout,*) 'read_z #2'
endif
if(ionode) close(iunz)
FLUSH( stdout )
return
end subroutine
END MODULE
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