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Accelerated u0_h_u0

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This commit is contained in:
Anthony Scemama 2016-12-13 12:40:12 +01:00
parent 683189855a
commit c911db7f8e
1 changed files with 65 additions and 1 deletions
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66
src/Davidson/u0Hu0.irp.f
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@ -383,6 +383,8 @@ subroutine H_S2_u_0_nstates(v_0,s_0,u_0,H_jj,S2_jj,n,keys_tmp,Nint,N_st,sze_8)
!$OMP DO SCHEDULE(dynamic)
do sh=1,shortcut(0,1)
do sh2=1,shortcut(0,1)
if (sh==sh2) cycle
exa = 0
do ni=1,Nint
exa = exa + popcnt(xor(version(ni,sh,1), version(ni,sh2,1)))
@ -398,7 +400,6 @@ subroutine H_S2_u_0_nstates(v_0,s_0,u_0,H_jj,S2_jj,n,keys_tmp,Nint,N_st,sze_8)
enddo
do j=shortcut(sh2,1),shortcut(sh2+1,1)-1
if (i==j) cycle
ext = exa + popcnt(xor(sorted_i(1), sorted(1,j,1)))
if (ext > 4) cycle
do ni=2,Nint
@ -423,6 +424,69 @@ subroutine H_S2_u_0_nstates(v_0,s_0,u_0,H_jj,S2_jj,n,keys_tmp,Nint,N_st,sze_8)
endif
endif
enddo
enddo
enddo
exa = 0
do i=shortcut(sh,1),shortcut(sh+1,1)-1
org_i = sort_idx(i,1)
do ni=1,Nint
sorted_i(ni) = sorted(ni,i,1)
enddo
do j=shortcut(sh,1),i-1
ext = exa + popcnt(xor(sorted_i(1), sorted(1,j,1)))
if (ext > 4) cycle
do ni=2,Nint
ext = ext + popcnt(xor(sorted_i(ni), sorted(ni,j,1)))
if (ext > 4) exit
end do
if(ext <= 4) then
org_j = sort_idx(j,1)
call i_h_j (keys_tmp(1,1,org_j),keys_tmp(1,1,org_i),nint,hij)
if (hij /= 0.d0) then
do istate=1,n_st
vt (istate,org_i) = vt (istate,org_i) + hij*ut(istate,j)
enddo
endif
if (ext /= 2) then
call get_s2(keys_tmp(1,1,org_j),keys_tmp(1,1,org_i),nint,s2)
if (s2 /= 0.d0) then
do istate=1,n_st
st (istate,org_i) = st (istate,org_i) + s2*ut(istate,j)
enddo
endif
endif
endif
enddo
do j=i+1,shortcut(sh+1,1)-1
if (i==j) cycle
ext = exa + popcnt(xor(sorted_i(1), sorted(1,j,1)))
if (ext > 4) cycle
do ni=2,Nint
ext = ext + popcnt(xor(sorted_i(ni), sorted(ni,j,1)))
if (ext > 4) exit
end do
if(ext <= 4) then
org_j = sort_idx(j,1)
call i_h_j (keys_tmp(1,1,org_j),keys_tmp(1,1,org_i),nint,hij)
if (hij /= 0.d0) then
do istate=1,n_st
vt (istate,org_i) = vt (istate,org_i) + hij*ut(istate,j)
enddo
endif
if (ext /= 2) then
call get_s2(keys_tmp(1,1,org_j),keys_tmp(1,1,org_i),nint,s2)
if (s2 /= 0.d0) then
do istate=1,n_st
st (istate,org_i) = st (istate,org_i) + s2*ut(istate,j)
enddo
endif
endif
endif
enddo
enddo
enddo