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cp_eri_mme_interface.F
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cp_eri_mme_interface.F
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!--------------------------------------------------------------------------------------------------!
! CP2K: A general program to perform molecular dynamics simulations !
! Copyright 2000-2023 CP2K developers group <https://cp2k.org> !
! !
! SPDX-License-Identifier: GPL-2.0-or-later !
!--------------------------------------------------------------------------------------------------!
! **************************************************************************************************
!> \brief Interface to Minimax-Ewald method for periodic ERI's to be used in CP2K.
! **************************************************************************************************
MODULE cp_eri_mme_interface
USE basis_set_types, ONLY: gto_basis_set_type
USE cell_types, ONLY: cell_create,&
cell_release,&
cell_type,&
init_cell,&
pbc
USE cp_log_handling, ONLY: cp_get_default_logger,&
cp_logger_type
USE cp_output_handling, ONLY: cp_print_key_finished_output,&
cp_print_key_section_create,&
cp_print_key_unit_nr,&
medium_print_level
USE eri_mme_test, ONLY: eri_mme_2c_perf_acc_test,&
eri_mme_3c_perf_acc_test
USE eri_mme_types, ONLY: eri_mme_coulomb,&
eri_mme_init,&
eri_mme_longrange,&
eri_mme_param,&
eri_mme_print_grid_info,&
eri_mme_release,&
eri_mme_set_params,&
eri_mme_yukawa
USE input_keyword_types, ONLY: keyword_create,&
keyword_release,&
keyword_type
USE input_section_types, ONLY: section_add_keyword,&
section_add_subsection,&
section_create,&
section_release,&
section_type,&
section_vals_get_subs_vals,&
section_vals_type,&
section_vals_val_get
USE input_val_types, ONLY: real_t
USE kinds, ONLY: default_string_length,&
dp
USE message_passing, ONLY: mp_para_env_type
USE orbital_pointers, ONLY: init_orbital_pointers
USE qs_kind_types, ONLY: get_qs_kind,&
qs_kind_type
USE string_utilities, ONLY: s2a
#include "./base/base_uses.f90"
IMPLICIT NONE
PRIVATE
LOGICAL, PRIVATE, PARAMETER :: debug_this_module = .FALSE.
CHARACTER(len=*), PARAMETER, PRIVATE :: moduleN = 'cp_eri_mme_interface'
PUBLIC :: &
cp_eri_mme_finalize, &
cp_eri_mme_init_read_input, &
cp_eri_mme_param, &
cp_eri_mme_perf_acc_test, &
cp_eri_mme_set_params, &
cp_eri_mme_update_local_counts, &
create_eri_mme_section, &
create_eri_mme_test_section
INTERFACE cp_eri_mme_set_params
MODULE PROCEDURE eri_mme_set_params_from_basis
MODULE PROCEDURE eri_mme_set_params_custom
END INTERFACE
TYPE cp_eri_mme_param
TYPE(cp_logger_type), POINTER :: logger
TYPE(eri_mme_param) :: par
TYPE(section_vals_type), &
POINTER :: mme_section => NULL()
INTEGER :: G_count_2c, R_count_2c
INTEGER :: GG_count_3c, GR_count_3c, RR_count_3c
LOGICAL :: do_calib
END TYPE cp_eri_mme_param
CONTAINS
! **************************************************************************************************
!> \brief Create main input section
!> \param section ...
!> \param default_n_minimax ...
! **************************************************************************************************
SUBROUTINE create_eri_mme_section(section, default_n_minimax)
TYPE(section_type), POINTER :: section
INTEGER, INTENT(IN), OPTIONAL :: default_n_minimax
INTEGER :: my_default_n_minimax
TYPE(keyword_type), POINTER :: keyword
TYPE(section_type), POINTER :: print_key, subsection
NULLIFY (keyword, print_key, subsection)
CPASSERT(.NOT. ASSOCIATED(section))
IF (PRESENT(default_n_minimax)) THEN
my_default_n_minimax = default_n_minimax
ELSE
my_default_n_minimax = 20
END IF
CALL section_create(section, __LOCATION__, name="ERI_MME", &
description="Parameters for the calculation of periodic electron repulsion "// &
"integrals (ERI) using the Minimax-Ewald (MME) method. "// &
"Note: N_MINIMAX is the only parameter to be tuned for accuracy, "// &
"all other parameters can be left to default. MME method is faster "// &
"than numerical GPW.", &
n_keywords=5, n_subsections=1)
CALL keyword_create(keyword, __LOCATION__, &
name="N_MINIMAX", &
description="Number of terms in minimax approximation of "// &
"reciprocal space potential. ", &
default_i_val=my_default_n_minimax)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, &
name="CUTOFF", &
description="User-defined energy cutoff to be used only if "// &
"DO_CALIBRATE_CUTOFF is set to .FALSE. ", &
default_r_val=300.0_dp)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, &
name="SUM_PRECISION", &
description="Terms in lattice sums are ignored if absolute value smaller than this value.", &
default_r_val=1.0E-16_dp)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, &
name="DO_CALIBRATE_CUTOFF", &
description="Whether the energy cutoff shall be calibrated to "// &
"minimize upper bound error estimate. ", &
default_l_val=.TRUE., &
lone_keyword_l_val=.TRUE.)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, &
name="DO_ERROR_ESTIMATE", &
description="Whether the error due to minimax approx. and cutoff shall be estimated", &
default_l_val=.TRUE., &
lone_keyword_l_val=.TRUE.)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL cp_print_key_section_create(print_key, __LOCATION__, "ERI_MME_INFO", &
description="Controls the printing info.", &
print_level=medium_print_level, filename="__STD_OUT__")
CALL section_add_subsection(section, print_key)
CALL section_release(print_key)
CALL keyword_create(keyword, __LOCATION__, &
name="PRINT_CALIB", &
description="Print detailed info on calibration. ", &
default_l_val=.FALSE., &
lone_keyword_l_val=.TRUE.)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, &
name="DEBUG", &
description="debug mode (consistency of summation methods is checked).", &
default_l_val=.FALSE., &
lone_keyword_l_val=.TRUE.)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, &
name="DEBUG_TOLERANCE", &
description="tolerance for rel. numerical error in debug mode.", &
default_r_val=1.0E-06_dp)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, &
name="DEBUG_NSUM_MAX", &
description="restrict debug mode for non-ortho cells to this number of summands. "// &
"Sums with more terms are not checked.", &
default_i_val=1000000)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL section_create(subsection, __LOCATION__, name="CUTOFF_CALIB", &
description="Parameters for the calibration of the energy cutoff by "// &
"minimizing the errors due to finite cutoff and minimax approximation. "// &
"Implemented as bisection of error(minimax) - error(cutoff). Not "// &
"implemented for non-orthorhombic cells. ", &
n_keywords=5, n_subsections=0)
CALL keyword_create(keyword, __LOCATION__, &
name="MIN", &
description="Initial guess of lower bound for cutoff. ", &
default_r_val=10.0_dp)
CALL section_add_keyword(subsection, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, &
name="MAX", &
description="Initial guess of upper bound for cutoff. ", &
default_r_val=10000.0_dp)
CALL section_add_keyword(subsection, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, &
name="DELTA", &
description="Relative widening of cutoff interval in case starting "// &
"values are not valid. ", &
default_r_val=0.9_dp)
CALL section_add_keyword(subsection, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, &
name="EPS", &
description="Relative cutoff precision required to stop calibration. ", &
default_r_val=0.01_dp)
CALL section_add_keyword(subsection, keyword)
CALL keyword_release(keyword)
CALL section_add_subsection(section, subsection)
CALL section_release(subsection)
END SUBROUTINE create_eri_mme_section
! **************************************************************************************************
!> \brief Read input and initialize parameter type
!> \param mme_section ...
!> \param param ...
! **************************************************************************************************
SUBROUTINE cp_eri_mme_init_read_input(mme_section, param)
TYPE(section_vals_type), POINTER :: mme_section
TYPE(cp_eri_mme_param), INTENT(INOUT) :: param
INTEGER :: debug_nsum, n_minimax, unit_nr
LOGICAL :: debug, do_calib_cutoff, do_error_est, &
print_calib
REAL(KIND=dp) :: cutoff, cutoff_delta, cutoff_eps, &
cutoff_max, cutoff_min, debug_delta, &
sum_precision
TYPE(cp_logger_type), POINTER :: logger
TYPE(section_vals_type), POINTER :: subsection
logger => cp_get_default_logger()
unit_nr = cp_print_key_unit_nr(logger, mme_section, "ERI_MME_INFO", &
extension=".eri_mme")
NULLIFY (subsection)
CALL section_vals_val_get(mme_section, "N_MINIMAX", i_val=n_minimax)
CALL section_vals_val_get(mme_section, "CUTOFF", r_val=cutoff)
CALL section_vals_val_get(mme_section, "SUM_PRECISION", r_val=sum_precision)
CALL section_vals_val_get(mme_section, "DO_CALIBRATE_CUTOFF", l_val=do_calib_cutoff)
CALL section_vals_val_get(mme_section, "DO_ERROR_ESTIMATE", l_val=do_error_est)
CALL section_vals_val_get(mme_section, "PRINT_CALIB", l_val=print_calib)
subsection => section_vals_get_subs_vals(mme_section, "CUTOFF_CALIB")
CALL section_vals_val_get(subsection, "MIN", r_val=cutoff_min)
CALL section_vals_val_get(subsection, "MAX", r_val=cutoff_max)
CALL section_vals_val_get(subsection, "EPS", r_val=cutoff_eps)
CALL section_vals_val_get(subsection, "DELTA", r_val=cutoff_delta)
CALL section_vals_val_get(mme_section, "DEBUG", l_val=debug)
CALL section_vals_val_get(mme_section, "DEBUG_TOLERANCE", r_val=debug_delta)
CALL section_vals_val_get(mme_section, "DEBUG_NSUM_MAX", i_val=debug_nsum)
param%mme_section => mme_section
CALL eri_mme_init(param%par, n_minimax, &
cutoff, do_calib_cutoff, do_error_est, cutoff_min, cutoff_max, cutoff_eps, cutoff_delta, &
sum_precision, debug, debug_delta, debug_nsum, unit_nr, print_calib)
param%do_calib = do_calib_cutoff
param%G_count_2c = 0
param%R_count_2c = 0
param%GG_count_3c = 0
param%GR_count_3c = 0
param%RR_count_3c = 0
param%logger => logger
END SUBROUTINE cp_eri_mme_init_read_input
! **************************************************************************************************
!> \brief Release eri mme data. Prints some statistics on summation methods chosen.
!> \param param ...
! **************************************************************************************************
SUBROUTINE cp_eri_mme_finalize(param)
TYPE(cp_eri_mme_param), INTENT(INOUT) :: param
INTEGER :: count_2c, count_3c, unit_nr
count_2c = param%G_count_2c + param%R_count_2c
count_3c = param%GG_count_3c + param%GR_count_3c + param%RR_count_3c
unit_nr = param%par%unit_nr
IF (unit_nr > 0) THEN
IF (count_2c .GT. 0) THEN
WRITE (unit_nr, '(/T2, A)') "ERI_MME| Percentage of 2-center integrals evaluated in"
WRITE (unit_nr, '(T2, A, T76, F5.1)') "ERI_MME| G space:", &
100.0_dp*param%G_count_2c/count_2c
WRITE (unit_nr, '(T2, A, T76, F5.1/)') "ERI_MME| R space:", &
100.0_dp*param%R_count_2c/count_2c
END IF
IF (count_3c .GT. 0) THEN
WRITE (unit_nr, '(/T2, A)') "ERI_MME| Percentage of 3-center integrals evaluated in"
WRITE (unit_nr, '(T2, A, T76, F5.1)') "ERI_MME| G/G space:", &
100.0_dp*param%GG_count_3c/count_3c
WRITE (unit_nr, '(T2, A, T76, F5.1)') "ERI_MME| G/R space:", &
100.0_dp*param%GR_count_3c/count_3c
WRITE (unit_nr, '(T2, A, T76, F5.1/)') "ERI_MME| R/R space:", &
100.0_dp*param%RR_count_3c/count_3c
END IF
END IF
CALL eri_mme_release(param%par)
CALL cp_print_key_finished_output(unit_nr, param%logger, param%mme_section, "ERI_MME_INFO")
END SUBROUTINE cp_eri_mme_finalize
! **************************************************************************************************
!> \brief Set parameters for MME method by deriving basis info from basis set.
!> Cutoff can be auto-calibrated to minimize total error.
!> \param param ...
!> \param cell ...
!> \param qs_kind_set ...
!> \param basis_type_1 ...
!> \param basis_type_2 ...
!> \param para_env ...
!> \param potential ...
!> \param pot_par ...
! **************************************************************************************************
SUBROUTINE eri_mme_set_params_from_basis(param, cell, qs_kind_set, basis_type_1, basis_type_2, para_env, &
potential, pot_par)
TYPE(cp_eri_mme_param), INTENT(INOUT) :: param
TYPE(cell_type), INTENT(IN) :: cell
TYPE(qs_kind_type), DIMENSION(:), INTENT(IN), &
POINTER :: qs_kind_set
CHARACTER(len=*), INTENT(IN) :: basis_type_1
CHARACTER(len=*), INTENT(IN), OPTIONAL :: basis_type_2
TYPE(mp_para_env_type), INTENT(IN) :: para_env
INTEGER, INTENT(IN), OPTIONAL :: potential
REAL(KIND=dp), INTENT(IN), OPTIONAL :: pot_par
CHARACTER(LEN=*), PARAMETER :: routineN = 'eri_mme_set_params_from_basis'
INTEGER :: handle, l_max, l_max_zet
REAL(KIND=dp) :: zet_max, zet_min
CALL timeset(routineN, handle)
CALL error_est_pgf_params_from_basis(qs_kind_set, basis_type_1, basis_type_2, &
zet_min, zet_max, l_max_zet, l_max)
CALL eri_mme_set_params_custom(param, cell%hmat, cell%orthorhombic, &
zet_min, zet_max, l_max_zet, &
l_max, para_env, &
potential, pot_par)
CALL timestop(handle)
END SUBROUTINE eri_mme_set_params_from_basis
! **************************************************************************************************
!> \brief Wrapper for eri_mme_set_params
!> \param param ...
!> \param hmat ...
!> \param is_ortho ...
!> \param zet_min ...
!> \param zet_max ...
!> \param l_max_zet ...
!> \param l_max ...
!> \param para_env ...
!> \param potential ...
!> \param pot_par ...
! **************************************************************************************************
SUBROUTINE eri_mme_set_params_custom(param, hmat, is_ortho, zet_min, zet_max, l_max_zet, l_max, para_env, &
potential, pot_par)
TYPE(cp_eri_mme_param), INTENT(INOUT) :: param
REAL(KIND=dp), DIMENSION(3, 3), INTENT(IN) :: hmat
LOGICAL, INTENT(IN) :: is_ortho
REAL(KIND=dp), INTENT(IN) :: zet_min, zet_max
INTEGER, INTENT(IN) :: l_max_zet, l_max
TYPE(mp_para_env_type), INTENT(IN) :: para_env
INTEGER, INTENT(IN), OPTIONAL :: potential
REAL(KIND=dp), INTENT(IN), OPTIONAL :: pot_par
REAL(KIND=dp), PARAMETER :: eps_changed = 1.0E-14_dp
IF (param%do_calib) THEN
IF (.NOT. param%par%is_valid) THEN
param%par%do_calib_cutoff = .TRUE.
ELSE
! only calibrate cutoff if parameters (cell, basis coefficients) have changed
IF (ALL(ABS(param%par%hmat - hmat) < eps_changed) .AND. &
ABS(param%par%zet_min - zet_min) < eps_changed .AND. &
ABS(param%par%zet_max - zet_max) < eps_changed .AND. &
param%par%l_max_zet == l_max_zet) THEN
param%par%do_calib_cutoff = .FALSE.
ELSE
param%par%do_calib_cutoff = .TRUE.
END IF
END IF
ELSE
param%par%do_calib_cutoff = .FALSE.
END IF
CALL eri_mme_set_params(param%par, hmat, is_ortho, zet_min, zet_max, l_max_zet, l_max, para_env, &
potential, pot_par)
CALL eri_mme_print_info(param)
END SUBROUTINE eri_mme_set_params_custom
! **************************************************************************************************
!> \brief Get basis parameters for estimating cutoff and minimax error from cp2k basis
!> \param qs_kind_set ...
!> \param basis_type_1 ...
!> \param basis_type_2 ...
!> \param zet_min Smallest exponent, used to estimate error due to minimax approx.
!> \param zet_max contains max. exponent,
!> used to estimate cutoff error
!> \param l_max_zet contains the largest l for max. exponent,
!> used to estimate cutoff error
!> \param l_max ...
! **************************************************************************************************
SUBROUTINE error_est_pgf_params_from_basis(qs_kind_set, basis_type_1, basis_type_2, zet_min, zet_max, l_max_zet, l_max)
TYPE(qs_kind_type), DIMENSION(:), INTENT(IN), &
POINTER :: qs_kind_set
CHARACTER(len=*), INTENT(IN) :: basis_type_1
CHARACTER(len=*), INTENT(IN), OPTIONAL :: basis_type_2
REAL(KIND=dp), INTENT(OUT) :: zet_min, zet_max
INTEGER, INTENT(OUT) :: l_max_zet, l_max
CHARACTER(LEN=*), PARAMETER :: routineN = 'error_est_pgf_params_from_basis'
CHARACTER(len=default_string_length) :: basis_type
INTEGER :: handle, ibasis, ikind, ipgf, iset, l_m, &
l_zet, nbasis, nkind, nset
INTEGER, DIMENSION(:), POINTER :: npgf
REAL(KIND=dp) :: zet_m
TYPE(gto_basis_set_type), POINTER :: basis_set
CALL timeset(routineN, handle)
l_m = 0
zet_m = 0.0_dp
l_zet = -1
zet_min = -1.0_dp
nkind = SIZE(qs_kind_set)
nbasis = MERGE(2, 1, PRESENT(basis_type_2))
! 1) get global max l and max zet
! (and min zet for minimax error)
DO ikind = 1, nkind
DO ibasis = 1, nbasis
IF (ibasis .EQ. 1) THEN
basis_type = basis_type_1
ELSE
basis_type = basis_type_2
END IF
CALL get_qs_kind(qs_kind=qs_kind_set(ikind), basis_set=basis_set, &
basis_type=basis_type)
CPASSERT(ASSOCIATED(basis_set))
npgf => basis_set%npgf
nset = basis_set%nset
l_m = MAX(l_m, MAXVAL(basis_set%lmax(:)))
DO iset = 1, nset
zet_m = MAX(zet_m, MAXVAL(basis_set%zet(1:npgf(iset), iset)))
IF (zet_min .LT. 0.0_dp) THEN
zet_min = MINVAL(basis_set%zet(1:npgf(iset), iset))
ELSE
zet_min = MIN(zet_min, MINVAL(basis_set%zet(1:npgf(iset), iset)))
END IF
END DO
END DO
END DO
! 2) get largest zet for max l and largest l for max zet
DO ikind = 1, nkind
DO ibasis = 1, nbasis
IF (ibasis .EQ. 1) THEN
basis_type = basis_type_1
ELSE
basis_type = basis_type_2
END IF
CALL get_qs_kind(qs_kind=qs_kind_set(ikind), basis_set=basis_set, &
basis_type=basis_type)
DO iset = 1, basis_set%nset
DO ipgf = 1, basis_set%npgf(iset)
IF (ABS(zet_m - basis_set%zet(ipgf, iset)) .LE. (zet_m*1.0E-12_dp) &
.AND. (basis_set%lmax(iset) .GT. l_zet)) THEN
l_zet = basis_set%lmax(iset)
END IF
END DO
END DO
END DO
END DO
CPASSERT(l_zet .GE. 0)
zet_max = zet_m
! l + 1 because we may calculate forces
! this is probably a safe choice also for the case that forces are not needed
l_max_zet = l_zet + 1
l_max = l_m + 1
CALL timestop(handle)
END SUBROUTINE error_est_pgf_params_from_basis
! **************************************************************************************************
!> \brief ...
!> \param param ...
! **************************************************************************************************
SUBROUTINE eri_mme_print_info(param)
TYPE(cp_eri_mme_param) :: param
INTEGER :: igrid, unit_nr
LOGICAL :: print_multigrids
TYPE(cp_logger_type), POINTER :: logger
print_multigrids = .FALSE.
logger => param%logger
unit_nr = param%par%unit_nr
IF (unit_nr > 0) THEN
SELECT CASE (param%par%potential)
CASE (eri_mme_coulomb)
WRITE (unit_nr, '(/T2, A)') "ERI_MME| Potential: Coulomb"
CASE (eri_mme_yukawa)
WRITE (unit_nr, '(/T2, A, ES9.2)') "ERI_MME| Potential: Yukawa with a=", param%par%pot_par
CASE (eri_mme_longrange)
WRITE (unit_nr, '(/T2, A, ES9.2)') "ERI_MME| Potential: long-range Coulomb with a=", param%par%pot_par
END SELECT
END IF
IF (unit_nr > 0) THEN
WRITE (unit_nr, '(/T2, A, T71, F10.1)') "ERI_MME| Cutoff for ERIs [a.u.]:", param%par%cutoff
WRITE (unit_nr, '(/T2, A, T78, I3/)') "ERI_MME| Number of terms in minimax approximation:", param%par%n_minimax
END IF
IF (param%par%is_ortho) THEN
IF (unit_nr > 0) THEN
IF (param%par%do_error_est) THEN
WRITE (unit_nr, '(T2, A)') "ERI_MME| Estimated absolute error for normalized Hermite-Gaussian basis"
WRITE (unit_nr, '(T2, A, T72, ES9.2)') "ERI_MME| Minimax error:", param%par%err_mm
WRITE (unit_nr, '(T2, A, T72, ES9.2)') "ERI_MME| Cutoff error:", param%par%err_c
WRITE (unit_nr, '(T2, A, T72, ES9.2)') "ERI_MME| Total error (minimax + cutoff):", param%par%err_mm + param%par%err_c
END IF
IF (param%par%print_calib) &
WRITE (unit_nr, '(T2, A, T68, F13.10)') "ERI_MME| Minimax scaling constant in AM-GM estimate:", param%par%C_mm
END IF
END IF
IF (print_multigrids) THEN
DO igrid = 1, param%par%n_grids
CALL eri_mme_print_grid_info(param%par%minimax_grid(igrid), igrid, unit_nr)
END DO
END IF
IF (unit_nr > 0) WRITE (unit_nr, *)
END SUBROUTINE eri_mme_print_info
! **************************************************************************************************
!> \brief Create input section for unit testing
!> \param section ...
! **************************************************************************************************
SUBROUTINE create_eri_mme_test_section(section)
TYPE(section_type), INTENT(INOUT), POINTER :: section
TYPE(keyword_type), POINTER :: keyword
TYPE(section_type), POINTER :: subsection
NULLIFY (keyword, subsection)
CPASSERT(.NOT. ASSOCIATED(section))
CALL section_create(section, __LOCATION__, name="ERI_MME_TEST", &
description="Parameters for testing the ERI_MME method for electron repulsion integrals. "// &
"Testing w.r.t. performance and accuracy. ", &
n_keywords=5, n_subsections=1)
CALL create_eri_mme_section(subsection)
CALL section_add_subsection(section, subsection)
CALL section_release(subsection)
CALL keyword_create(keyword, __LOCATION__, &
name="_SECTION_PARAMETERS_", &
description="Controls the activation the ERI_MME test. ", &
default_l_val=.FALSE., &
lone_keyword_l_val=.TRUE.)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, name="TEST_3C", &
description="Whether to test 3-center integrals.", &
default_l_val=.TRUE., &
lone_keyword_l_val=.TRUE.)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, name="TEST_2C", &
description="Whether to test 2-center integrals.", &
default_l_val=.TRUE., &
lone_keyword_l_val=.TRUE.)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, name="ABC", &
description="Specify the lengths of the cell vectors A, B, and C. ", &
usage="ABC 10.000 10.000 10.000", unit_str="angstrom", &
n_var=3, type_of_var=real_t)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, name="MIN_NPOS", &
description="Minimum number of atomic distances to consider. ", &
default_i_val=8)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, name="NREP", &
description="Number of repeated calculation of each integral. ", &
default_i_val=1)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, name="CHECK_2C_ACCURACY", &
description="Whether integrals should be compared to reference values, "// &
"created on the fly by exact method (G-space sum on grid without "// &
"minimax approximation). Note: only feasible for not too many "// &
"integrals and maximum exponent around 10.0. ", &
default_l_val=.FALSE., &
lone_keyword_l_val=.TRUE.)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, name="LMAX", &
description="Maximum total angular momentum quantum number. ", &
default_i_val=6)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, name="ZET_MIN", &
description="Minimum exponent. ", &
default_r_val=0.001_dp)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, name="ZET_MAX", &
description="Maximum exponent. ", &
default_r_val=1.0_dp)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, name="NZET", &
description="Number of exponents (logarithmic partition between ZET_MIN and ZET_MAX). ", &
default_i_val=4)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, name="NSAMPLE_3C", &
description="If NSAMPLE_3C = N, only calculate every Nth 3-center integral.", &
default_i_val=1)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, name="POTENTIAL", &
description="Operator to test", &
default_i_val=eri_mme_coulomb, &
enum_i_vals=(/eri_mme_coulomb, eri_mme_yukawa, eri_mme_longrange/), &
enum_c_vals=s2a("COULOMB", "YUKAWA", "LONGRANGE"), &
enum_desc=s2a("1/r", "exp(-a*r)/r", "erf(a*r)/r"))
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
CALL keyword_create(keyword, __LOCATION__, name="POTENTIAL_PARAM", &
description="Parameter 'a' for chosen potential, ignored for Coulomb", &
default_r_val=0.0_dp)
CALL section_add_keyword(section, keyword)
CALL keyword_release(keyword)
END SUBROUTINE create_eri_mme_test_section
! **************************************************************************************************
!> \brief Update local counters to gather statistics on different paths taken in MME algorithm
!> (each Ewald sum can be performed over direct or reciprocal lattice vectors)
!> \param param ...
!> \param para_env ...
!> \param G_count_2c ...
!> \param R_count_2c ...
!> \param GG_count_3c ...
!> \param GR_count_3c ...
!> \param RR_count_3c ...
! **************************************************************************************************
SUBROUTINE cp_eri_mme_update_local_counts(param, para_env, G_count_2c, R_count_2c, GG_count_3c, GR_count_3c, RR_count_3c)
TYPE(cp_eri_mme_param), INTENT(INOUT) :: param
TYPE(mp_para_env_type), INTENT(IN) :: para_env
INTEGER, INTENT(INOUT), OPTIONAL :: G_count_2c, R_count_2c, GG_count_3c, &
GR_count_3c, RR_count_3c
IF (PRESENT(G_count_2c)) THEN
CALL para_env%sum(G_count_2c)
param%G_count_2c = param%G_count_2c + G_count_2c
END IF
IF (PRESENT(R_count_2c)) THEN
CALL para_env%sum(R_count_2c)
param%R_count_2c = param%R_count_2c + R_count_2c
END IF
IF (PRESENT(GG_count_3c)) THEN
CALL para_env%sum(GG_count_3c)
param%GG_count_3c = param%GG_count_3c + GG_count_3c
END IF
IF (PRESENT(GR_count_3c)) THEN
CALL para_env%sum(GR_count_3c)
param%GR_count_3c = param%GR_count_3c + GR_count_3c
END IF
IF (PRESENT(RR_count_3c)) THEN
CALL para_env%sum(RR_count_3c)
param%RR_count_3c = param%RR_count_3c + RR_count_3c
END IF
END SUBROUTINE cp_eri_mme_update_local_counts
! **************************************************************************************************
!> \brief ...
!> \param para_env ...
!> \param iw ...
!> \param eri_mme_test_section ...
! **************************************************************************************************
SUBROUTINE cp_eri_mme_perf_acc_test(para_env, iw, eri_mme_test_section)
TYPE(mp_para_env_type), INTENT(IN) :: para_env
INTEGER, INTENT(IN) :: iw
TYPE(section_vals_type), POINTER :: eri_mme_test_section
INTEGER :: count_r, G_count, GG_count, GR_count, i, &
ix, iy, iz, l_max, min_nR, nR, nR_xyz, &
nrep, nsample, nzet, potential, &
R_count, RR_count
LOGICAL :: test_2c, test_3c, test_accuracy
REAL(KIND=dp) :: pot_par, zet_fac, zetmax, zetmin
REAL(KIND=dp), ALLOCATABLE, DIMENSION(:) :: zet
REAL(KIND=dp), ALLOCATABLE, DIMENSION(:, :) :: rabc
REAL(KIND=dp), DIMENSION(:), POINTER :: cell_par
TYPE(cell_type), POINTER :: box
TYPE(cp_eri_mme_param) :: param
TYPE(section_vals_type), POINTER :: eri_mme_section
NULLIFY (box, eri_mme_section, cell_par)
eri_mme_section => section_vals_get_subs_vals(eri_mme_test_section, "ERI_MME")
CALL cp_eri_mme_init_read_input(eri_mme_section, param)
CALL section_vals_val_get(eri_mme_test_section, "TEST_3C", l_val=test_3c)
CALL section_vals_val_get(eri_mme_test_section, "TEST_2C", l_val=test_2c)
CALL section_vals_val_get(eri_mme_test_section, "ABC", r_vals=cell_par)
CALL section_vals_val_get(eri_mme_test_section, "MIN_NPOS", i_val=min_nR)
CALL section_vals_val_get(eri_mme_test_section, "NREP", i_val=nrep)
CALL section_vals_val_get(eri_mme_test_section, "CHECK_2C_ACCURACY", l_val=test_accuracy)
CALL section_vals_val_get(eri_mme_test_section, "LMAX", i_val=l_max)
CALL section_vals_val_get(eri_mme_test_section, "ZET_MIN", r_val=zetmin)
CALL section_vals_val_get(eri_mme_test_section, "ZET_MAX", r_val=zetmax)
CALL section_vals_val_get(eri_mme_test_section, "NZET", i_val=nzet)
CALL section_vals_val_get(eri_mme_test_section, "NSAMPLE_3C", i_val=nsample)
CALL section_vals_val_get(eri_mme_test_section, "POTENTIAL", i_val=potential)
CALL section_vals_val_get(eri_mme_test_section, "POTENTIAL_PARAM", r_val=pot_par)
IF (nzet .LE. 0) &
CPABORT("Number of exponents NZET must be greater than 0.")
CALL init_orbital_pointers(l_max)
! Create ranges of zet to be tested
ALLOCATE (zet(nzet))
zet(1) = zetmin
IF (nzet .GT. 1) THEN
zet_fac = (zetmax/zetmin)**(1.0_dp/(nzet - 1))
DO i = 1, nzet - 1
zet(i + 1) = zet(i)*zet_fac
END DO
END IF
! initialize cell
CALL cell_create(box)
box%hmat = 0.0_dp
box%hmat(1, 1) = cell_par(1)
box%hmat(2, 2) = cell_par(2)
box%hmat(3, 3) = cell_par(3)
CALL init_cell(box)
! Create range of rab (atomic distances) to be tested
nR_xyz = CEILING(REAL(min_nR, KIND=dp)**(1.0_dp/3.0_dp) - 1.0E-06)
nR = nR_xyz**3
ALLOCATE (rabc(3, nR))
count_r = 0
DO ix = 1, nR_xyz
DO iy = 1, nR_xyz
DO iz = 1, nR_xyz
count_r = count_r + 1
! adding 10% of cell size to positions to avoid atoms exactly at boundary or center of a cell
rabc(:, count_r) = pbc([ix*ABS(cell_par(1)), &
iy*ABS(cell_par(2)), &
iz*ABS(cell_par(3))]/nR_xyz + &
0.1_dp*ABS(cell_par(:)), box)
END DO
END DO
END DO
! initialize MME method
CALL cp_eri_mme_set_params(param, box%hmat, box%orthorhombic, MINVAL(zet), MAXVAL(zet), l_max, l_max, para_env, &
potential, pot_par)
IF (iw > 0) WRITE (iw, '(T2, A, T61, I20)') "ERI_MME| Number of atomic distances:", nR
G_count = 0; R_count = 0
GG_count = 0; GR_count = 0; RR_count = 0
IF (test_2c) CALL eri_mme_2c_perf_acc_test(param%par, l_max, zet, rabc, nrep, test_accuracy, para_env, iw, &
potential=potential, pot_par=pot_par, G_count=G_count, R_count=R_count)
IF (test_3c) CALL eri_mme_3c_perf_acc_test(param%par, l_max, zet, rabc, nrep, nsample, &
para_env, iw, potential=potential, pot_par=pot_par, &
GG_count=GG_count, GR_count=GR_count, RR_count=RR_count)
CALL cp_eri_mme_update_local_counts(param, para_env, G_count, R_count, GG_count, GR_count, RR_count)
CALL cp_eri_mme_finalize(param)
CALL cell_release(box)
END SUBROUTINE cp_eri_mme_perf_acc_test
END MODULE cp_eri_mme_interface