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Davidson without diagonal option

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This commit is contained in:
Anthony Scemama 2021-06-18 12:45:41 +02:00
parent 2ef1e128e1
commit 66baf49ca6
2 changed files with 22 additions and 7 deletions
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5
src/davidson/EZFIO.cfg
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@ -58,3 +58,8 @@ doc: Maximum number of determinants where |H| is fully diagonalized
interface: ezfio,provider,ocaml
default: 1000
[without_diagonal]
type: logical
doc: If |true|, don't use denominator
default: False
interface: ezfio,provider,ocaml

24
src/davidson/diagonalization_hcsf_dressed.irp.f
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@ -447,14 +447,24 @@ subroutine davidson_diag_csf_hjj(dets_in,u_in,H_jj,energies,dim_in,sze,sze_csf,N
! Compute residual vector and davidson step
! -----------------------------------------
!$OMP PARALLEL DO DEFAULT(SHARED) PRIVATE(i,k)
do k=1,N_st_diag
do i=1,sze
U(i,k) = (lambda(k) * U(i,k) - W(i,k) ) &
/max(H_jj(i) - lambda (k),1.d-2)
if (without_diagonal) then
!$OMP PARALLEL DO DEFAULT(SHARED) PRIVATE(i,k)
do k=1,N_st_diag
do i=1,sze
U(i,k) = (lambda(k) * U(i,k) - W(i,k) ) &
/max(H_jj(i) - lambda (k),1.d-2)
enddo
enddo
enddo
!$OMP END PARALLEL DO
!$OMP END PARALLEL DO
else
!$OMP PARALLEL DO DEFAULT(SHARED) PRIVATE(i,k)
do k=1,N_st_diag
do i=1,sze
U(i,k) = (lambda(k) * U(i,k) - W(i,k) )
enddo
enddo
!$OMP END PARALLEL DO
endif
do k=1,N_st
residual_norm(k) = u_dot_u(U(1,k),sze)