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Matrix product in batches
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parent
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commit
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127
CI/F12CI.ml
127
CI/F12CI.ml
@ -20,11 +20,16 @@ let f12_integrals mo_basis =
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let two_e_ints = MOBasis.f12_ints mo_basis in
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( (fun _ _ _ -> 0.),
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(fun i j k l s s' ->
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if s' = Spin.other s then
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F12.get_phys two_e_ints i j k l
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if (i=k && j<>l) || (j=l && i<>k) then
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0.
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else
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(F12.get_phys two_e_ints i j k l) -.
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(F12.get_phys two_e_ints i j l k)
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begin
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if s' = Spin.other s then
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0.5 *. (F12.get_phys two_e_ints i j k l)
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else
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0.25 *. ((F12.get_phys two_e_ints i j k l) -.
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(F12.get_phys two_e_ints i j l k))
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end
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) )
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@ -70,16 +75,18 @@ let is_internal det_space =
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Determinant.alfa a
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|> Spindeterminant.bitstring
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in
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(*
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let beta =
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Determinant.beta a
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|> Spindeterminant.bitstring
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in
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let a = Bitstring.logand aux_mask alfa
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and b = Bitstring.logand aux_mask beta
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in Bitstring.popcount a + Bitstring.popcount b < 2
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*)
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in
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match Bitstring.popcount a + Bitstring.popcount b with
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| 1 | 2 -> false
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| _ -> true
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(*
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if not (Bitstring.logand aux_mask alfa |> Bitstring.is_zero ) then
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false
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else
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@ -88,6 +95,7 @@ let is_internal det_space =
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|> Spindeterminant.bitstring
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in
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Bitstring.logand aux_mask beta |> Bitstring.is_zero
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*)
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let dressing_vector ~frozen_core aux_basis f12_amplitudes ci =
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@ -118,40 +126,65 @@ let dressing_vector ~frozen_core aux_basis f12_amplitudes ci =
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Printf.printf "Building matrix\n%!";
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(* Determinants of the FCI space as a list *)
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let in_dets =
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DeterminantSpace.determinants_array ci.CI.det_space
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|> Array.to_list
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in
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let m_H_aux, m_F_aux =
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let out_dets_stream =
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(* Stream that generates only singly and doubly excited determinants
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wrt FCI space *)
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let out_dets_stream =
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(* Stream that generates all determinants of FCI space *)
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let s =
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DeterminantSpace.fci_of_mo_basis ~frozen_core aux_basis
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|> DeterminantSpace.determinant_stream
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in
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let in_dets =
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DeterminantSpace.determinants_array ci.CI.det_space
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|> Array.to_list
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in
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(* Select only singly and doubly excited determinants
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wrt FCI space *)
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Stream.from (fun _ ->
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try
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let rec result () =
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let ki = Stream.next s in
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if is_internal ci.CI.det_space ki then
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result ()
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else
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Some ki
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in
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result ()
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with Stream.Failure -> None
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)
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in
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let rec col_vecs_list accu_H accu_F =
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let make_h_and_f n =
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let rec col_vecs_list accu_H accu_F = function
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| 0 ->
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List.rev accu_H,
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List.rev accu_F
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| n ->
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try
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let ki = Stream.next out_dets_stream in
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if is_internal ci.CI.det_space ki then
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raise Exit
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else
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let h, f =
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List.map (fun kj ->
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match hf_ij aux_basis ki kj with
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| [ a ; b ] -> a, b
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| _ -> assert false ) in_dets
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|> List.split
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in
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col_vecs_list (h::accu_H) (f::accu_F)
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let h, f =
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List.map (fun kj ->
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match hf_ij aux_basis ki kj with
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| [ a ; b ] -> a, b
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| _ -> assert false ) in_dets
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|> List.split
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in
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let h =
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Vec.of_list h
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and f =
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Vec.of_list f
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in
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col_vecs_list (h::accu_H) (f::accu_F) (n-1)
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with
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| Exit -> col_vecs_list accu_H accu_F
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| Stream.Failure ->
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List.rev_map Vec.of_list accu_H,
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List.rev_map Vec.of_list accu_F
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| Stream.Failure -> col_vecs_list accu_H accu_F 0
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in
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let h, f =
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col_vecs_list [] []
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col_vecs_list [] [] n
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in
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Mat.of_col_vecs_list h,
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Mat.of_col_vecs_list f
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@ -160,7 +193,21 @@ let dressing_vector ~frozen_core aux_basis f12_amplitudes ci =
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Printf.printf "Matrix product\n%!";
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let m_HF =
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gemm m_H_aux m_F_aux ~transb:`T
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let batch_size = 10_000_000 / (Mat.dim1 f12_amplitudes) in
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let result =
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let m_H_aux, m_F_aux = make_h_and_f batch_size in
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gemm m_H_aux m_F_aux ~transb:`T
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in
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while (Stream.peek out_dets_stream <> None)
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do
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Printf.printf "gemm\n%!";
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let m_H_aux, m_F_aux = make_h_and_f batch_size in
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let hf =
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gemm m_H_aux m_F_aux ~transb:`T
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in
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ignore @@ Mat.add result hf ~c:result
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done;
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result
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in
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@ -200,7 +247,7 @@ let dressing_vector ~frozen_core aux_basis f12_amplitudes ci =
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Printf.printf "Done\n%!";
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gemm m_HF f12_amplitudes
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|> Matrix.sparse_of_mat
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|> Matrix.dense_of_mat
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@ -211,6 +258,7 @@ let make ~simulation ?(threshold=1.e-12) ~frozen_core ~mo_basis ~aux_basis_filen
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let f12 = Util.of_some @@ Simulation.f12 simulation in
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let mo_num = MOBasis.size mo_basis in
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Printf.printf "Add aux basis\n%!";
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(* Add auxiliary basis set *)
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let s =
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let charge = Charge.to_int @@ Simulation.charge simulation
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@ -230,7 +278,16 @@ let make ~simulation ?(threshold=1.e-12) ~frozen_core ~mo_basis ~aux_basis_filen
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let aux_basis =
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MOBasis.of_mo_basis s mo_basis
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in
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let () =
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Printf.printf "F12 ints\n%!";
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ignore @@ MOBasis.f12_ints aux_basis
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in
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let () =
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Printf.printf "2e ints\n%!";
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ignore @@ MOBasis.two_e_ints aux_basis
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in
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Printf.printf "det space\n%!";
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let det_space =
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DeterminantSpace.fci_f12_of_mo_basis aux_basis ~frozen_core mo_num
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in
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@ -243,12 +300,12 @@ let make ~simulation ?(threshold=1.e-12) ~frozen_core ~mo_basis ~aux_basis_filen
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in
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(*
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let f12_amplitudes =
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fun c ->
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let result = lacpy c in
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Mat.scal (0.5) result ;
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result
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(*
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(* While in a sequential region, initiate the parallel
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4-idx transformation to avoid nested parallel jobs
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*)
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@ -276,8 +333,8 @@ let make ~simulation ?(threshold=1.e-12) ~frozen_core ~mo_basis ~aux_basis_filen
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if abs_float norm.{1,1} > 1. then
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failwith "Norm of |F> > 1";
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result
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*)
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in
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*)
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let e_shift =
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let det =
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@ -294,7 +351,7 @@ let make ~simulation ?(threshold=1.e-12) ~frozen_core ~mo_basis ~aux_basis_filen
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let rec iteration ?(state=1) psi =
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let delta =
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dressing_vector ~frozen_core aux_basis (f12_amplitudes psi) ci
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dressing_vector ~frozen_core aux_basis psi ci
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in
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let f = 1.0 /. psi.{1,1} in
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@ -76,7 +76,7 @@ let () =
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in
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let fcif12 =
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F12CI.make ~simulation ~frozen_core:true ~mo_basis ~aux_basis_filename ()
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F12CI.make ~simulation ~frozen_core:false ~mo_basis ~aux_basis_filename ()
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in
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let ci = F12CI.ci fcif12 in
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