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/* Copyright 2019 Aurore Blelly, Axel Huebl, Maxence Thevenet
* Remi Lehe, Revathi Jambunathan
*
* This file is part of WarpX.
*
* License: BSD-3-Clause-LBNL
*/
#include "WarpX.H"
#include "BoundaryConditions/PML.H"
#include "PML_current.H"
#include "Utils/WarpXProfilerWrapper.H"
#include "WarpX_PML_kernels.H"
#ifdef AMREX_USE_SENSEI_INSITU
# include <AMReX_AmrMeshInSituBridge.H>
#endif
#include <AMReX_Array4.H>
#include <AMReX_Config.H>
#include <AMReX_Extension.H>
#include <AMReX_FabArray.H>
#include <AMReX_GpuControl.H>
#include <AMReX_GpuLaunch.H>
#include <AMReX_GpuQualifiers.H>
#include <AMReX_IndexType.H>
#include <AMReX_IntVect.H>
#include <AMReX_MFIter.H>
#include <AMReX_MultiFab.H>
#include <AMReX_REAL.H>
#include <AMReX_Vector.H>
#include <AMReX_BaseFwd.H>
#include <array>
#include <memory>
using namespace amrex;
void
WarpX::DampPML ()
{
for (int lev = 0; lev <= finest_level; ++lev) {
DampPML(lev);
}
}
void
WarpX::DampPML (int lev)
{
DampPML(lev, PatchType::fine);
if (lev > 0) DampPML(lev, PatchType::coarse);
}
void
WarpX::DampPML (int lev, PatchType patch_type)
{
if (!do_pml) return;
WARPX_PROFILE("WarpX::DampPML()");
const bool dive_cleaning = WarpX::do_pml_dive_cleaning;
const bool divb_cleaning = WarpX::do_pml_divb_cleaning;
if (pml[lev]->ok())
{
const auto& pml_E = (patch_type == PatchType::fine) ? pml[lev]->GetE_fp() : pml[lev]->GetE_cp();
const auto& pml_B = (patch_type == PatchType::fine) ? pml[lev]->GetB_fp() : pml[lev]->GetB_cp();
const auto& pml_F = (patch_type == PatchType::fine) ? pml[lev]->GetF_fp() : pml[lev]->GetF_cp();
const auto& pml_G = (patch_type == PatchType::fine) ? pml[lev]->GetG_fp() : pml[lev]->GetG_cp();
const auto& sigba = (patch_type == PatchType::fine) ? pml[lev]->GetMultiSigmaBox_fp()
: pml[lev]->GetMultiSigmaBox_cp();
const amrex::IntVect Ex_stag = pml_E[0]->ixType().toIntVect();
const amrex::IntVect Ey_stag = pml_E[1]->ixType().toIntVect();
const amrex::IntVect Ez_stag = pml_E[2]->ixType().toIntVect();
const amrex::IntVect Bx_stag = pml_B[0]->ixType().toIntVect();
const amrex::IntVect By_stag = pml_B[1]->ixType().toIntVect();
const amrex::IntVect Bz_stag = pml_B[2]->ixType().toIntVect();
amrex::IntVect F_stag;
if (pml_F) {
F_stag = pml_F->ixType().toIntVect();
}
amrex::IntVect G_stag;
if (pml_G) {
G_stag = pml_G->ixType().toIntVect();
}
#ifdef AMREX_USE_OMP
#pragma omp parallel if (Gpu::notInLaunchRegion())
#endif
for ( MFIter mfi(*pml_E[0], TilingIfNotGPU()); mfi.isValid(); ++mfi )
{
const Box& tex = mfi.tilebox( pml_E[0]->ixType().toIntVect() );
const Box& tey = mfi.tilebox( pml_E[1]->ixType().toIntVect() );
const Box& tez = mfi.tilebox( pml_E[2]->ixType().toIntVect() );
const Box& tbx = mfi.tilebox( pml_B[0]->ixType().toIntVect() );
const Box& tby = mfi.tilebox( pml_B[1]->ixType().toIntVect() );
const Box& tbz = mfi.tilebox( pml_B[2]->ixType().toIntVect() );
auto const& pml_Exfab = pml_E[0]->array(mfi);
auto const& pml_Eyfab = pml_E[1]->array(mfi);
auto const& pml_Ezfab = pml_E[2]->array(mfi);
auto const& pml_Bxfab = pml_B[0]->array(mfi);
auto const& pml_Byfab = pml_B[1]->array(mfi);
auto const& pml_Bzfab = pml_B[2]->array(mfi);
amrex::Real const * AMREX_RESTRICT sigma_fac_x = sigba[mfi].sigma_fac[0].data();
#if defined(WARPX_DIM_3D)
amrex::Real const * AMREX_RESTRICT sigma_fac_y = sigba[mfi].sigma_fac[1].data();
amrex::Real const * AMREX_RESTRICT sigma_fac_z = sigba[mfi].sigma_fac[2].data();
#else
amrex::Real const * AMREX_RESTRICT sigma_fac_y = nullptr;
amrex::Real const * AMREX_RESTRICT sigma_fac_z = sigba[mfi].sigma_fac[1].data();
#endif
amrex::Real const * AMREX_RESTRICT sigma_star_fac_x = sigba[mfi].sigma_star_fac[0].data();
#if defined(WARPX_DIM_3D)
amrex::Real const * AMREX_RESTRICT sigma_star_fac_y = sigba[mfi].sigma_star_fac[1].data();
amrex::Real const * AMREX_RESTRICT sigma_star_fac_z = sigba[mfi].sigma_star_fac[2].data();
#else
amrex::Real const * AMREX_RESTRICT sigma_star_fac_y = nullptr;
amrex::Real const * AMREX_RESTRICT sigma_star_fac_z = sigba[mfi].sigma_star_fac[1].data();
#endif
int const x_lo = sigba[mfi].sigma_fac[0].lo();
#if defined(WARPX_DIM_3D)
int const y_lo = sigba[mfi].sigma_fac[1].lo();
int const z_lo = sigba[mfi].sigma_fac[2].lo();
#else
int const y_lo = 0;
int const z_lo = sigba[mfi].sigma_fac[1].lo();
#endif
amrex::ParallelFor(tex, tey, tez,
[=] AMREX_GPU_DEVICE (int i, int j, int k) {
warpx_damp_pml_ex(i, j, k, pml_Exfab, Ex_stag, sigma_fac_x, sigma_fac_y, sigma_fac_z,
sigma_star_fac_x, sigma_star_fac_y, sigma_star_fac_z, x_lo, y_lo, z_lo,
dive_cleaning);
},
[=] AMREX_GPU_DEVICE (int i, int j, int k) {
warpx_damp_pml_ey(i, j, k, pml_Eyfab, Ey_stag, sigma_fac_x, sigma_fac_y, sigma_fac_z,
sigma_star_fac_x, sigma_star_fac_y, sigma_star_fac_z, x_lo, y_lo, z_lo,
dive_cleaning);
},
[=] AMREX_GPU_DEVICE (int i, int j, int k) {
warpx_damp_pml_ez(i, j, k, pml_Ezfab, Ez_stag, sigma_fac_x, sigma_fac_y, sigma_fac_z,
sigma_star_fac_x, sigma_star_fac_y, sigma_star_fac_z, x_lo, y_lo, z_lo,
dive_cleaning);
});
amrex::ParallelFor(tbx, tby, tbz,
[=] AMREX_GPU_DEVICE (int i, int j, int k) {
warpx_damp_pml_bx(i, j, k, pml_Bxfab, Bx_stag, sigma_fac_x, sigma_fac_y, sigma_fac_z,
sigma_star_fac_x, sigma_star_fac_y, sigma_star_fac_z, x_lo, y_lo, z_lo,
divb_cleaning);
},
[=] AMREX_GPU_DEVICE (int i, int j, int k) {
warpx_damp_pml_by(i, j, k, pml_Byfab, By_stag, sigma_fac_x, sigma_fac_y, sigma_fac_z,
sigma_star_fac_x, sigma_star_fac_y, sigma_star_fac_z, x_lo, y_lo, z_lo,
divb_cleaning);
},
[=] AMREX_GPU_DEVICE (int i, int j, int k) {
warpx_damp_pml_bz(i, j, k, pml_Bzfab, Bz_stag, sigma_fac_x, sigma_fac_y, sigma_fac_z,
sigma_star_fac_x, sigma_star_fac_y, sigma_star_fac_z, x_lo, y_lo, z_lo,
divb_cleaning);
});
// For warpx_damp_pml_F(), mfi.nodaltilebox is used in the ParallelFor loop and here we
// use mfi.tilebox. However, it does not matter because in damp_pml, where nodaltilebox
// is used, only a simple multiplication is performed.
if (pml_F) {
const Box& tnd = mfi.nodaltilebox();
auto const& pml_F_fab = pml_F->array(mfi);
amrex::ParallelFor(tnd, [=] AMREX_GPU_DEVICE (int i, int j, int k)
{
warpx_damp_pml_scalar(i, j, k, pml_F_fab, F_stag, sigma_fac_x, sigma_fac_y, sigma_fac_z,
sigma_star_fac_x, sigma_star_fac_y, sigma_star_fac_z, x_lo, y_lo, z_lo);
});
}
// Damp G when WarpX::do_divb_cleaning = true
if (pml_G) {
const Box& tb = mfi.tilebox(G_stag);
auto const& pml_G_fab = pml_G->array(mfi);
amrex::ParallelFor(tb, [=] AMREX_GPU_DEVICE (int i, int j, int k)
{
warpx_damp_pml_scalar(i, j, k, pml_G_fab, G_stag, sigma_fac_x, sigma_fac_y, sigma_fac_z,
sigma_star_fac_x, sigma_star_fac_y, sigma_star_fac_z, x_lo, y_lo, z_lo);
});
}
}
}
}
void
WarpX::DampJPML ()
{
for (int lev = 0; lev <= finest_level; ++lev) {
DampJPML(lev);
}
}
void
WarpX::DampJPML (int lev)
{
DampJPML(lev, PatchType::fine);
if (lev > 0) DampJPML(lev, PatchType::coarse);
}
void
WarpX::DampJPML (int lev, PatchType patch_type)
{
if (!do_pml) return;
if (!do_pml_j_damping) return;
WARPX_PROFILE("WarpX::DampJPML()");
if (pml[lev]->ok())
{
const auto& pml_j = (patch_type == PatchType::fine) ? pml[lev]->Getj_fp() : pml[lev]->Getj_cp();
const auto& sigba = (patch_type == PatchType::fine) ? pml[lev]->GetMultiSigmaBox_fp()
: pml[lev]->GetMultiSigmaBox_cp();
#ifdef AMREX_USE_OMP
#pragma omp parallel if (Gpu::notInLaunchRegion())
#endif
for ( MFIter mfi(*pml_j[0], TilingIfNotGPU()); mfi.isValid(); ++mfi )
{
auto const& pml_jxfab = pml_j[0]->array(mfi);
auto const& pml_jyfab = pml_j[1]->array(mfi);
auto const& pml_jzfab = pml_j[2]->array(mfi);
const Real* sigma_cumsum_fac_j_x = sigba[mfi].sigma_cumsum_fac[0].data();
const Real* sigma_star_cumsum_fac_j_x = sigba[mfi].sigma_star_cumsum_fac[0].data();
#if defined(WARPX_DIM_3D)
const Real* sigma_cumsum_fac_j_y = sigba[mfi].sigma_cumsum_fac[1].data();
const Real* sigma_star_cumsum_fac_j_y = sigba[mfi].sigma_star_cumsum_fac[1].data();
const Real* sigma_cumsum_fac_j_z = sigba[mfi].sigma_cumsum_fac[2].data();
const Real* sigma_star_cumsum_fac_j_z = sigba[mfi].sigma_star_cumsum_fac[2].data();
#else
const Real* sigma_cumsum_fac_j_y = nullptr;
const Real* sigma_star_cumsum_fac_j_y = nullptr;
const Real* sigma_cumsum_fac_j_z = sigba[mfi].sigma_cumsum_fac[1].data();
const Real* sigma_star_cumsum_fac_j_z = sigba[mfi].sigma_star_cumsum_fac[1].data();
#endif
const Box& tjx = mfi.tilebox( pml_j[0]->ixType().toIntVect() );
const Box& tjy = mfi.tilebox( pml_j[1]->ixType().toIntVect() );
const Box& tjz = mfi.tilebox( pml_j[2]->ixType().toIntVect() );
int const x_lo = sigba[mfi].sigma_cumsum_fac[0].lo();
#if defined(WARPX_DIM_3D)
int const y_lo = sigba[mfi].sigma_cumsum_fac[1].lo();
int const z_lo = sigba[mfi].sigma_cumsum_fac[2].lo();
#else
int const y_lo = 0;
int const z_lo = sigba[mfi].sigma_cumsum_fac[1].lo();
#endif
int const xs_lo = sigba[mfi].sigma_star_cumsum_fac[0].lo();
#if defined(WARPX_DIM_3D)
int const ys_lo = sigba[mfi].sigma_star_cumsum_fac[1].lo();
int const zs_lo = sigba[mfi].sigma_star_cumsum_fac[2].lo();
#else
int const ys_lo = 0;
int const zs_lo = sigba[mfi].sigma_star_cumsum_fac[1].lo();
#endif
amrex::ParallelFor( tjx, tjy, tjz,
[=] AMREX_GPU_DEVICE (int i, int j, int k) {
damp_jx_pml(i, j, k, pml_jxfab, sigma_star_cumsum_fac_j_x,
sigma_cumsum_fac_j_y, sigma_cumsum_fac_j_z,
xs_lo,y_lo, z_lo);
},
[=] AMREX_GPU_DEVICE (int i, int j, int k) {
damp_jy_pml(i, j, k, pml_jyfab, sigma_cumsum_fac_j_x,
sigma_star_cumsum_fac_j_y, sigma_cumsum_fac_j_z,
x_lo,ys_lo, z_lo);
},
[=] AMREX_GPU_DEVICE (int i, int j, int k) {
damp_jz_pml(i, j, k, pml_jzfab, sigma_cumsum_fac_j_x,
sigma_cumsum_fac_j_y, sigma_star_cumsum_fac_j_z,
x_lo,y_lo, zs_lo);
}
);
}
}
}
/**
* \brief Copy the current J from the regular grid to the PML
*/
void
WarpX::CopyJPML ()
{
for (int lev = 0; lev <= finest_level; ++lev)
{
if (pml[lev]->ok()){
pml[lev]->CopyJtoPMLs({ current_fp[lev][0].get(),
current_fp[lev][1].get(),
current_fp[lev][2].get() },
{ current_cp[lev][0].get(),
current_cp[lev][1].get(),
current_cp[lev][2].get() });
}
}
}
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