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Dec 5, 2024
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Fix the overwriting between xc kernel components #5654

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377b9aa
fix the overwriting between xc kernel components
maki49 Nov 30, 2024
8fbdead
[pre-commit.ci lite] apply automatic fixes
pre-commit-ci-lite[bot] Nov 30, 2024
cf7d9de
use for-loop with omp
maki49 Dec 1, 2024
7855e11
add duration test
maki49 Dec 3, 2024
f4e5635
replace lambda by individual function
maki49 Dec 3, 2024
db170d4
expand the for-loop
maki49 Dec 3, 2024
ca1ab07
small change
maki49 Dec 3, 2024
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182 changes: 92 additions & 90 deletions source/module_lr/potentials/xc_kernel.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -5,11 +5,15 @@
#include "module_lr/utils/lr_util.h"
#include "module_lr/utils/lr_util_xc.hpp"
#include <set>
#include <chrono>
#include "module_io/cube_io.h"
#ifdef USE_LIBXC
#include <xc.h>
#include "module_hamilt_general/module_xc/xc_functional_libxc.h"
#endif
#ifdef _OPENMP
#include <omp.h>
#endif

LR::KernelXC::KernelXC(const ModulePW::PW_Basis& rho_basis,
const UnitCell& ucell,
Expand Down Expand Up @@ -66,6 +70,29 @@ LR::KernelXC::KernelXC(const ModulePW::PW_Basis& rho_basis,
#endif
}

template <typename T>
inline void add_op(const T* const src1, const T* const src2, T* const dst, const int size)
{
#ifdef _OPENMP
#pragma omp parallel for schedule(static, 4096)
#endif
for (int i = 0;i < size;++i)
{
dst[i] = src1[i] + src2[i];
}
}
template <typename T>
inline void add_op(const std::vector<T>& src1, const std::vector<T>& src2, std::vector<T>& dst)
{
assert(dst.size() >= src1.size() && src2.size() >= src1.size());
add_op(src1.data(), src2.data(), dst.data(), src1.size());
}
template <typename T>
inline void add_assign_op(const std::vector<T>& src, std::vector<T>& dst)
{
add_op(src, dst, dst);
}

#ifdef USE_LIBXC
void LR::KernelXC::f_xc_libxc(const int& nspin, const double& omega, const double& tpiba, const double* const* const rho_gs, const double* const rho_core)
{
Expand Down Expand Up @@ -115,7 +142,8 @@ void LR::KernelXC::f_xc_libxc(const int& nspin, const double& omega, const doubl
#ifdef _OPENMP
#pragma omp parallel for schedule(static, 1024)
#endif
for (int ir = 0; ir < nrxx; ++ir) rhor[ir] = rho[ir * nspin + is];
for (int ir = 0; ir < nrxx; ++ir) { rhor[ir] = rho[ir * nspin + is];
}
gradrho[is].resize(nrxx);
LR_Util::grad(rhor.data(), gradrho[is].data(), rho_basis_, tpiba);
}
Expand All @@ -126,8 +154,9 @@ void LR::KernelXC::f_xc_libxc(const int& nspin, const double& omega, const doubl
#ifdef _OPENMP
#pragma omp parallel for schedule(static, 1024)
#endif
for (int ir = 0; ir < nrxx; ++ir)
for (int ir = 0; ir < nrxx; ++ir) {
sigma[ir] = gradrho[0][ir] * gradrho[0][ir];
}
}
else
{
Expand All @@ -144,13 +173,13 @@ void LR::KernelXC::f_xc_libxc(const int& nspin, const double& omega, const doubl
}
// -----------------------------------------------------------------------------------
//==================== XC Kernels (f_xc)=============================
this->vrho_.resize(nspin * nrxx);
this->v2rho2_.resize(((1 == nspin) ? 1 : 3) * nrxx);//(nrxx* ((1 == nspin) ? 1 : 3)): 00, 01, 11
this->vrho_.resize(nspin * nrxx, 0.);
this->v2rho2_.resize(((1 == nspin) ? 1 : 3) * nrxx, 0.);//(nrxx* ((1 == nspin) ? 1 : 3)): 00, 01, 11
if (is_gga)
{
this->vsigma_.resize(((1 == nspin) ? 1 : 3) * nrxx);//(nrxx*): 2 for rho * 3 for sigma: 00, 01, 02, 10, 11, 12
this->v2rhosigma_.resize(((1 == nspin) ? 1 : 6) * nrxx); //(nrxx*): 2 for rho * 3 for sigma: 00, 01, 02, 10, 11, 12
this->v2sigma2_.resize(((1 == nspin) ? 1 : 6) * nrxx); //(nrxx* ((1 == nspin) ? 1 : 6)): 00, 01, 02, 11, 12, 22
this->vsigma_.resize(((1 == nspin) ? 1 : 3) * nrxx, 0.);//(nrxx*): 2 for rho * 3 for sigma: 00, 01, 02, 10, 11, 12
this->v2rhosigma_.resize(((1 == nspin) ? 1 : 6) * nrxx, 0.); //(nrxx*): 2 for rho * 3 for sigma: 00, 01, 02, 10, 11, 12
this->v2sigma2_.resize(((1 == nspin) ? 1 : 6) * nrxx, 0.); //(nrxx* ((1 == nspin) ? 1 : 6)): 00, 01, 02, 11, 12, 22
}
//MetaGGA ...

Expand All @@ -163,105 +192,78 @@ void LR::KernelXC::f_xc_libxc(const int& nspin, const double& omega, const doubl

//cut off grho if not LDA (future subfunc)

// Libxc interfaces overwrite (instead of add onto) the output arrays, so we need temporary copies
std::vector<double> vrho_tmp(this->vrho_.size());
std::vector<double> v2rho2_tmp(this->v2rho2_.size());
std::vector<double> vsigma_tmp(this->vsigma_.size());
std::vector<double> v2rhosigma_tmp(this->v2rhosigma_.size());
std::vector<double> v2sigma2_tmp(this->v2sigma2_.size());
switch (func.info->family)
{
case XC_FAMILY_LDA:
xc_lda_vxc(&func, nrxx, rho.data(), vrho_.data());
xc_lda_fxc(&func, nrxx, rho.data(), v2rho2_.data());
xc_lda_vxc(&func, nrxx, rho.data(), vrho_tmp.data());
xc_lda_fxc(&func, nrxx, rho.data(), v2rho2_tmp.data());
break;
case XC_FAMILY_GGA:
case XC_FAMILY_HYB_GGA:
xc_gga_vxc(&func, nrxx, rho.data(), sigma.data(), vrho_.data(), vsigma_.data());
xc_gga_fxc(&func, nrxx, rho.data(), sigma.data(), v2rho2_.data(), v2rhosigma_.data(), v2sigma2_.data());
xc_gga_vxc(&func, nrxx, rho.data(), sigma.data(), vrho_tmp.data(), vsigma_tmp.data());
xc_gga_fxc(&func, nrxx, rho.data(), sigma.data(), v2rho2_tmp.data(), v2rhosigma_tmp.data(), v2sigma2_tmp.data());
break;
default:
throw std::domain_error("func.info->family =" + std::to_string(func.info->family)
+ " unfinished in " + std::string(__FILE__) + " line " + std::to_string(__LINE__));
break;
}
// some formulas for GGA
if (func.info->family == XC_FAMILY_GGA || func.info->family == XC_FAMILY_HYB_GGA)
{
const std::vector<double>& v2r2 = this->v2rho2_;
const std::vector<double>& v2rs = this->v2rhosigma_;
const std::vector<double>& v2s2 = this->v2sigma2_;
const std::vector<double>& vs = this->vsigma_;
const double tpiba2 = tpiba * tpiba;

if (1 == nspin)
{
using V3 = ModuleBase::Vector3<double>;
// 0. drho
this->drho_gs_ = gradrho[0];
// 1. $2f^{\rho\sigma}*\nabla\rho$
this->v2rhosigma_2drho_.resize(nrxx);
std::transform(gradrho[0].begin(), gradrho[0].end(), v2rs.begin(), this->v2rhosigma_2drho_.begin(),
[](const V3& a, const V3& b) {return a * b * 2.; });
// 2. $4f^{\sigma\sigma}*\nabla\rho$
this->v2sigma2_4drho_.resize(nrxx);
std::transform(sigma.begin(), sigma.end(), v2s2.begin(), v2sigma2_4drho_.begin(),
[](const V3& a, const V3& b) {return a * b * 4.; });
}
// else if (2 == nspin) // wrong, to be fixed
// {
// // 1. $\nabla\cdot(f^{\rho\sigma}*\nabla\rho)$
// std::vector<double> div_v2rhosigma_gdrho_r(3 * nrxx);
// std::vector<ModuleBase::Vector3<double>> v2rhosigma_gdrho_r(3 * nrxx);
// for (int ir = 0; ir < nrxx; ++ir)
// {
// v2rhosigma_gdrho_r[ir] = gradrho[0][ir] * v2rs.at(ir * 6) * 4.0
// + gradrho[1][ir] * v2rs.at(ir * 6 + 1) * 2.0; //up-up
// v2rhosigma_gdrho_r[nrxx + ir] = gradrho[0][ir] * (v2rs.at(ir * 6 + 3) * 2.0 + v2rs.at(ir * 6 + 1))
// + gradrho[1][ir] * (v2rs.at(ir * 6 + 2) * 2.0 + v2rs.at(ir * 6 + 4)); //up-down
// v2rhosigma_gdrho_r[2 * nrxx + ir] = gradrho[1][ir] * v2rs.at(ir * 6 + 5) * 4.0
// + gradrho[0][ir] * v2rs.at(ir * 6 + 4) * 2.0; //down-down
// }
// for (int isig = 0;isig < 3;++isig)
// XC_Functional::grad_dot(v2rhosigma_gdrho_r.data() + isig * nrxx, div_v2rhosigma_gdrho_r.data() + isig * nrxx, chg_gs.rhopw, tpiba);
// // 2. $\nabla^2(f^{\sigma\sigma}*\sigma)$
// std::vector<double> v2sigma2_sigma_r(3 * nrxx);
// for (int ir = 0; ir < nrxx; ++ir)
// {
// v2sigma2_sigma_r[ir] = v2s2.at(ir * 6) * sigma[ir * 3] * 4.0
// + v2s2.at(ir * 6 + 1) * sigma[ir * 3 + 1] * 4.0
// + v2s2.at(ir * 6 + 3) * sigma[ir * 3 + 2]; //up-up
// v2sigma2_sigma_r[nrxx + ir] = v2s2.at(ir * 6 + 1) * sigma[ir * 3] * 2.0
// + v2s2.at(ir * 6 + 4) * sigma[ir * 3 + 2] * 2.0
// + (v2s2.at(ir * 6 + 2) * 4.0 + v2s2.at(ir * 6 + 3)) * sigma[ir * 3 + 1]; //up-down
// v2sigma2_sigma_r[2 * nrxx + ir] = v2s2.at(ir * 6 + 5) * sigma[ir * 3 + 2] * 4.0
// + v2s2.at(ir * 6 + 4) * sigma[ir * 3 + 1] * 4.0
// + v2s2.at(ir * 6 + 3) * sigma[ir * 3]; //down-down
// }
// for (int isig = 0;isig < 3;++isig)
// LR_Util::lapl(v2sigma2_sigma_r.data() + isig * nrxx, v2sigma2_sigma_r.data() + isig * nrxx, *(chg_gs.rhopw), tpiba2);
// // 3. $\nabla^2(v^\sigma)$
// std::vector<double> lap_vsigma(3 * nrxx);
// for (int ir = 0;ir < nrxx;++ir)
// {
// lap_vsigma[ir] = vs.at(ir * 3) * 2.0;
// lap_vsigma[nrxx + ir] = vs.at(ir * 3 + 1);
// lap_vsigma[2 * nrxx + ir] = vs.at(ir * 3 + 2) * 2.0;
// }
// for (int isig = 0;isig < 3;++isig)
// LR_Util::lapl(lap_vsigma.data() + isig * nrxx, lap_vsigma.data() + isig * nrxx, *(chg_gs.rhopw), tpiba2);
// // add to v2rho2_
// BlasConnector::axpy(3 * nrxx, 1.0, v2r2.data(), 1, to_mul_rho_.data(), 1);
// BlasConnector::axpy(3 * nrxx, -1.0, div_v2rhosigma_gdrho_r.data(), 1, to_mul_rho_.data(), 1);
// BlasConnector::axpy(3 * nrxx, 1.0, v2sigma2_sigma_r.data(), 1, to_mul_rho_.data(), 1);
// BlasConnector::axpy(3 * nrxx, 1.0, lap_vsigma.data(), 1, to_mul_rho_.data(), 1);
// }
else
{
throw std::domain_error("nspin =" + std::to_string(nspin)
+ " unfinished in " + std::string(__FILE__) + " line " + std::to_string(__LINE__));
}
}
// add onto the total components
// auto start = std::chrono::high_resolution_clock::now();
add_assign_op(vrho_tmp, this->vrho_);
add_assign_op(v2rho2_tmp, this->v2rho2_);
add_assign_op(vsigma_tmp, this->vsigma_);
add_assign_op(v2rhosigma_tmp, this->v2rhosigma_);
add_assign_op(v2sigma2_tmp, this->v2sigma2_);
// auto end = std::chrono::high_resolution_clock::now();
// auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(end - start);
// std::cout << "Time elapsed adding XC components: " << duration.count() << " ms\n";
} // end for( xc_func_type &func : funcs )

XC_Functional_Libxc::finish_func(funcs);

if (1 == PARAM.inp.nspin || 2 == PARAM.inp.nspin) return;
// some postprocess if there're GGA funcs in the list
if (is_gga)
{
const std::vector<double>& v2r2 = this->v2rho2_;
const std::vector<double>& v2rs = this->v2rhosigma_;
const std::vector<double>& v2s2 = this->v2sigma2_;
const std::vector<double>& vs = this->vsigma_;
const double tpiba2 = tpiba * tpiba;

if (1 == nspin)
{
// 0. drho
this->drho_gs_ = gradrho[0];
// 1. $2f^{\rho\sigma}*\nabla\rho$
this->v2rhosigma_2drho_.resize(nrxx);
#ifdef _OPENMP
#pragma omp parallel for schedule(static, 4096)
#endif
for (size_t i = 0; i < nrxx; ++i) { this->v2rhosigma_2drho_[i] = gradrho[0][i] * v2rs[i] * 2.; }

// 2. $4f^{\sigma\sigma}*\nabla\rho$
this->v2sigma2_4drho_.resize(nrxx);
#ifdef _OPENMP
#pragma omp parallel for schedule(static, 4096)
#endif
for (size_t i = 0; i < nrxx; ++i) { this->v2sigma2_4drho_[i] = gradrho[0][i] * v2s2[i] * 4.; }
}
else
{
throw std::domain_error("nspin =" + std::to_string(nspin)
+ " unfinished in " + std::string(__FILE__) + " line " + std::to_string(__LINE__));
}
}
if (1 == PARAM.inp.nspin || 2 == PARAM.inp.nspin) { return;
// else if (4 == PARAM.inp.nspin)
else//NSPIN != 1,2,4 is not supported
} else//NSPIN != 1,2,4 is not supported
{
throw std::domain_error("PARAM.inp.nspin =" + std::to_string(PARAM.inp.nspin)
+ " unfinished in " + std::string(__FILE__) + " line " + std::to_string(__LINE__));
Expand Down
2 changes: 1 addition & 1 deletion tests/integrate/291_NO_KP_LR/result.ref
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Original file line number Diff line number Diff line change
@@ -1 +1 @@
totexcitationenergyref 0.784274
totexcitationenergyref 0.755653
2 changes: 1 addition & 1 deletion tests/integrate/391_NO_GO_LR/result.ref
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Original file line number Diff line number Diff line change
@@ -1 +1 @@
totexcitationenergyref 2.641190
totexcitationenergyref 2.510666
4 changes: 2 additions & 2 deletions tests/integrate/393_NO_GO_ULR_HF/INPUT
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Original file line number Diff line number Diff line change
Expand Up @@ -27,12 +27,12 @@ mixing_type pulay
mixing_beta 0.4
mixing_gg0 0

dft_functional lda
dft_functional hf
exx_real_number 1
exx_ccp_rmesh_times 1

lr_nstates 3
xc_kernel lda
xc_kernel hf
lr_solver lapack
lr_thr 1e-2
lr_unrestricted 1
Expand Down
2 changes: 1 addition & 1 deletion tests/integrate/393_NO_GO_ULR_HF/result.ref
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Original file line number Diff line number Diff line change
@@ -1 +1 @@
totexcitationenergyref 1.940703
totexcitationenergyref 2.187535
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