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Acceleration of pt2_find

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This commit is contained in:
Anthony Scemama 2017-02-01 14:06:57 +01:00
parent 3bbc3980c5
commit 17386004bd
1 changed files with 13 additions and 9 deletions
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22
plugins/Full_CI_ZMQ/pt2_stoch_routines.irp.f
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@ -167,7 +167,7 @@ subroutine pt2_collector(b, tbc, comb, Ncomb, computed, pt2_detail, sumabove, su
type(selection_buffer), intent(inout) :: b
double precision :: pt2_mwen(N_states, N_det)
double precision :: pt2_mwen(N_states, N_det_generators)
integer(ZMQ_PTR),external :: new_zmq_to_qp_run_socket
integer(ZMQ_PTR) :: zmq_to_qp_run_socket
@ -203,7 +203,7 @@ subroutine pt2_collector(b, tbc, comb, Ncomb, computed, pt2_detail, sumabove, su
zmq_to_qp_run_socket = new_zmq_to_qp_run_socket()
zmq_socket_pull = new_zmq_pull_socket()
allocate(val(b%N), det(N_int, 2, b%N), task_id(N_det), index(N_det))
allocate(val(b%N), det(N_int, 2, b%N), task_id(N_det_generators), index(N_det_generators))
more = 1
if (time0 < 0.d0) then
time0 = omp_get_wtime()
@ -277,14 +277,14 @@ subroutine pt2_collector(b, tbc, comb, Ncomb, computed, pt2_detail, sumabove, su
end subroutine
integer function pt2_find(v, w, sze)
integer function pt2_find(v, w, sze, imin, imax)
implicit none
integer, intent(in) :: sze
integer, intent(in) :: sze, imin, imax
double precision, intent(in) :: v, w(sze)
integer :: i,l,h
l = 0
h = N_det-1
l = imin
h = imax-1
do while(h >= l)
i = ishft(h+l,-1)
@ -443,7 +443,7 @@ subroutine get_comb(stato, dets, ct)
curs = 1d0 - stato
do j = comb_teeth, 1, -1
!DIR$ FORCEINLINE
dets(j) = pt2_find(curs, pt2_cweight,size(pt2_cweight))
dets(j) = pt2_find(curs, pt2_cweight,size(pt2_cweight), first_det_of_teeth(j), first_det_of_teeth(j+1))
curs -= comb_step
end do
end subroutine
@ -476,6 +476,7 @@ end subroutine
BEGIN_PROVIDER [ double precision, pt2_weight, (N_det_generators) ]
&BEGIN_PROVIDER [ double precision, pt2_cweight, (N_det_generators) ]
&BEGIN_PROVIDER [ double precision, pt2_cweight_cache, (N_det_generators) ]
&BEGIN_PROVIDER [ double precision, comb_step ]
&BEGIN_PROVIDER [ integer, first_det_of_teeth, (comb_teeth+1) ]
&BEGIN_PROVIDER [ integer, first_det_of_comb ]
@ -508,9 +509,12 @@ end subroutine
comb_step = (1d0 - pt2_cweight(first_det_of_comb-1)) * comb_step
stato = 1d0 - comb_step! + 1d-5
stato = 1d0 - comb_step
iloc = N_det_generators
do i=comb_teeth, 1, -1
first_det_of_teeth(i) = pt2_find(stato, pt2_cweight, N_det_generators)
integer :: iloc
iloc = pt2_find(stato, pt2_cweight, N_det_generators, 0, iloc)
first_det_of_teeth(i) = iloc
stato -= comb_step
end do
first_det_of_teeth(comb_teeth+1) = N_det_generators + 1