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#include <cmath>
#include <limits>
#include <WarpX.H>
#include <WarpXConst.H>
#include <WarpX_f.H>
#include <WarpX_K.H>
#ifdef WARPX_USE_PY
#include <WarpX_py.H>
#endif
#ifdef BL_USE_SENSEI_INSITU
#include <AMReX_AmrMeshInSituBridge.H>
#endif
using namespace amrex;
void
WarpX::EvolveB (Real a_dt)
{
for (int lev = 0; lev <= finest_level; ++lev) {
EvolveB(lev, a_dt);
}
}
void
WarpX::EvolveB (int lev, Real a_dt)
{
BL_PROFILE("WarpX::EvolveB()");
EvolveB(lev, PatchType::fine, a_dt);
if (lev > 0)
{
EvolveB(lev, PatchType::coarse, a_dt);
}
}
void
WarpX::EvolveB (int lev, PatchType patch_type, amrex::Real a_dt)
{
const int patch_level = (patch_type == PatchType::fine) ? lev : lev-1;
const std::array<Real,3>& dx = WarpX::CellSize(patch_level);
Real dtsdx = a_dt/dx[0], dtsdy = a_dt/dx[1], dtsdz = a_dt/dx[2];
MultiFab *Ex, *Ey, *Ez, *Bx, *By, *Bz;
if (patch_type == PatchType::fine)
{
Ex = Efield_fp[lev][0].get();
Ey = Efield_fp[lev][1].get();
Ez = Efield_fp[lev][2].get();
Bx = Bfield_fp[lev][0].get();
By = Bfield_fp[lev][1].get();
Bz = Bfield_fp[lev][2].get();
}
else
{
Ex = Efield_cp[lev][0].get();
Ey = Efield_cp[lev][1].get();
Ez = Efield_cp[lev][2].get();
Bx = Bfield_cp[lev][0].get();
By = Bfield_cp[lev][1].get();
Bz = Bfield_cp[lev][2].get();
}
MultiFab* cost = costs[lev].get();
const IntVect& rr = (lev > 0) ? refRatio(lev-1) : IntVect::TheUnitVector();
// xmin is only used by the picsar kernel with cylindrical geometry,
// in which case it is actually rmin.
const Real xmin = Geom(0).ProbLo(0);
// Loop through the grids, and over the tiles within each grid
#ifdef _OPENMP
#pragma omp parallel if (Gpu::notInLaunchRegion())
#endif
for ( MFIter mfi(*Bx, TilingIfNotGPU()); mfi.isValid(); ++mfi )
{
Real wt = amrex::second();
const Box& tbx = mfi.tilebox(Bx_nodal_flag);
const Box& tby = mfi.tilebox(By_nodal_flag);
const Box& tbz = mfi.tilebox(Bz_nodal_flag);
if (do_nodal) {
auto const& Bxfab = Bx->array(mfi);
auto const& Byfab = By->array(mfi);
auto const& Bzfab = Bz->array(mfi);
auto const& Exfab = Ex->array(mfi);
auto const& Eyfab = Ey->array(mfi);
auto const& Ezfab = Ez->array(mfi);
amrex::ParallelFor(tbx,
[=] AMREX_GPU_DEVICE (int j, int k, int l)
{
warpx_push_bx_nodal(j,k,l,Bxfab,Eyfab,Ezfab,dtsdy,dtsdz);
});
amrex::ParallelFor(tby,
[=] AMREX_GPU_DEVICE (int j, int k, int l)
{
warpx_push_by_nodal(j,k,l,Byfab,Exfab,Ezfab,dtsdx,dtsdz);
});
amrex::ParallelFor(tbz,
[=] AMREX_GPU_DEVICE (int j, int k, int l)
{
warpx_push_bz_nodal(j,k,l,Bzfab,Exfab,Eyfab,dtsdx,dtsdy);
});
} else {
// Call picsar routine for each tile
warpx_push_bvec(
tbx.loVect(), tbx.hiVect(),
tby.loVect(), tby.hiVect(),
tbz.loVect(), tbz.hiVect(),
BL_TO_FORTRAN_3D((*Ex)[mfi]),
BL_TO_FORTRAN_3D((*Ey)[mfi]),
BL_TO_FORTRAN_3D((*Ez)[mfi]),
BL_TO_FORTRAN_3D((*Bx)[mfi]),
BL_TO_FORTRAN_3D((*By)[mfi]),
BL_TO_FORTRAN_3D((*Bz)[mfi]),
&dtsdx, &dtsdy, &dtsdz,
&xmin, &dx[0],
&WarpX::maxwell_fdtd_solver_id);
}
if (cost) {
Box cbx = mfi.tilebox(IntVect{AMREX_D_DECL(0,0,0)});
if (patch_type == PatchType::coarse) cbx.refine(rr);
wt = (amrex::second() - wt) / cbx.d_numPts();
auto costfab = cost->array(mfi);
amrex::ParallelFor(cbx,
[=] AMREX_GPU_DEVICE (int i, int j, int k)
{
costfab(i,j,k) += wt;
});
}
}
if (do_pml && pml[lev]->ok())
{
const auto& pml_B = (patch_type == PatchType::fine) ? pml[lev]->GetB_fp() : pml[lev]->GetB_cp();
const auto& pml_E = (patch_type == PatchType::fine) ? pml[lev]->GetE_fp() : pml[lev]->GetE_cp();
#ifdef _OPENMP
#pragma omp parallel if (Gpu::notInLaunchRegion())
#endif
for ( MFIter mfi(*pml_B[0], TilingIfNotGPU()); mfi.isValid(); ++mfi )
{
const Box& tbx = mfi.tilebox(Bx_nodal_flag);
const Box& tby = mfi.tilebox(By_nodal_flag);
const Box& tbz = mfi.tilebox(Bz_nodal_flag);
WRPX_PUSH_PML_BVEC(
tbx.loVect(), tbx.hiVect(),
tby.loVect(), tby.hiVect(),
tbz.loVect(), tbz.hiVect(),
BL_TO_FORTRAN_3D((*pml_E[0])[mfi]),
BL_TO_FORTRAN_3D((*pml_E[1])[mfi]),
BL_TO_FORTRAN_3D((*pml_E[2])[mfi]),
BL_TO_FORTRAN_3D((*pml_B[0])[mfi]),
BL_TO_FORTRAN_3D((*pml_B[1])[mfi]),
BL_TO_FORTRAN_3D((*pml_B[2])[mfi]),
&dtsdx, &dtsdy, &dtsdz,
&WarpX::maxwell_fdtd_solver_id);
}
}
}
void
WarpX::EvolveE (Real a_dt)
{
for (int lev = 0; lev <= finest_level; ++lev)
{
EvolveE(lev, a_dt);
}
}
void
WarpX::EvolveE (int lev, Real a_dt)
{
BL_PROFILE("WarpX::EvolveE()");
EvolveE(lev, PatchType::fine, a_dt);
if (lev > 0)
{
EvolveE(lev, PatchType::coarse, a_dt);
}
}
void
WarpX::EvolveE (int lev, PatchType patch_type, amrex::Real a_dt)
{
const Real mu_c2_dt = (PhysConst::mu0*PhysConst::c*PhysConst::c) * a_dt;
const Real c2dt = (PhysConst::c*PhysConst::c) * a_dt;
int patch_level = (patch_type == PatchType::fine) ? lev : lev-1;
const std::array<Real,3>& dx = WarpX::CellSize(patch_level);
Real dtsdx_c2 = c2dt/dx[0], dtsdy_c2 = c2dt/dx[1], dtsdz_c2 = c2dt/dx[2];
MultiFab *Ex, *Ey, *Ez, *Bx, *By, *Bz, *jx, *jy, *jz, *F;
if (patch_type == PatchType::fine)
{
Ex = Efield_fp[lev][0].get();
Ey = Efield_fp[lev][1].get();
Ez = Efield_fp[lev][2].get();
Bx = Bfield_fp[lev][0].get();
By = Bfield_fp[lev][1].get();
Bz = Bfield_fp[lev][2].get();
jx = current_fp[lev][0].get();
jy = current_fp[lev][1].get();
jz = current_fp[lev][2].get();
F = F_fp[lev].get();
}
else if (patch_type == PatchType::coarse)
{
Ex = Efield_cp[lev][0].get();
Ey = Efield_cp[lev][1].get();
Ez = Efield_cp[lev][2].get();
Bx = Bfield_cp[lev][0].get();
By = Bfield_cp[lev][1].get();
Bz = Bfield_cp[lev][2].get();
jx = current_cp[lev][0].get();
jy = current_cp[lev][1].get();
jz = current_cp[lev][2].get();
F = F_cp[lev].get();
}
MultiFab* cost = costs[lev].get();
const IntVect& rr = (lev > 0) ? refRatio(lev-1) : IntVect::TheUnitVector();
// xmin is only used by the picsar kernel with cylindrical geometry,
// in which case it is actually rmin.
const Real xmin = Geom(0).ProbLo(0);
// Loop through the grids, and over the tiles within each grid
#ifdef _OPENMP
#pragma omp parallel if (Gpu::notInLaunchRegion())
#endif
for ( MFIter mfi(*Ex, TilingIfNotGPU()); mfi.isValid(); ++mfi )
{
Real wt = amrex::second();
const Box& tex = mfi.tilebox(Ex_nodal_flag);
const Box& tey = mfi.tilebox(Ey_nodal_flag);
const Box& tez = mfi.tilebox(Ez_nodal_flag);
if (do_nodal) {
auto const& Exfab = Ex->array(mfi);
auto const& Eyfab = Ey->array(mfi);
auto const& Ezfab = Ez->array(mfi);
auto const& Bxfab = Bx->array(mfi);
auto const& Byfab = By->array(mfi);
auto const& Bzfab = Bz->array(mfi);
auto const& jxfab = jx->array(mfi);
auto const& jyfab = jy->array(mfi);
auto const& jzfab = jz->array(mfi);
amrex::ParallelFor(tex,
[=] AMREX_GPU_DEVICE (int j, int k, int l)
{
warpx_push_ex_nodal(j,k,l,Exfab,Byfab,Bzfab,jxfab,mu_c2_dt,dtsdy_c2,dtsdz_c2);
});
amrex::ParallelFor(tey,
[=] AMREX_GPU_DEVICE (int j, int k, int l)
{
warpx_push_ey_nodal(j,k,l,Eyfab,Bxfab,Bzfab,jyfab,mu_c2_dt,dtsdx_c2,dtsdz_c2);
});
amrex::ParallelFor(tez,
[=] AMREX_GPU_DEVICE (int j, int k, int l)
{
warpx_push_ez_nodal(j,k,l,Ezfab,Bxfab,Byfab,jzfab,mu_c2_dt,dtsdx_c2,dtsdy_c2);
});
} else {
// Call picsar routine for each tile
warpx_push_evec(
tex.loVect(), tex.hiVect(),
tey.loVect(), tey.hiVect(),
tez.loVect(), tez.hiVect(),
BL_TO_FORTRAN_3D((*Ex)[mfi]),
BL_TO_FORTRAN_3D((*Ey)[mfi]),
BL_TO_FORTRAN_3D((*Ez)[mfi]),
BL_TO_FORTRAN_3D((*Bx)[mfi]),
BL_TO_FORTRAN_3D((*By)[mfi]),
BL_TO_FORTRAN_3D((*Bz)[mfi]),
BL_TO_FORTRAN_3D((*jx)[mfi]),
BL_TO_FORTRAN_3D((*jy)[mfi]),
BL_TO_FORTRAN_3D((*jz)[mfi]),
&mu_c2_dt,
&dtsdx_c2, &dtsdy_c2, &dtsdz_c2,
&xmin, &dx[0]);
}
if (F)
{
warpx_push_evec_f(
tex.loVect(), tex.hiVect(),
tey.loVect(), tey.hiVect(),
tez.loVect(), tez.hiVect(),
BL_TO_FORTRAN_3D((*Ex)[mfi]),
BL_TO_FORTRAN_3D((*Ey)[mfi]),
BL_TO_FORTRAN_3D((*Ez)[mfi]),
BL_TO_FORTRAN_3D((*F)[mfi]),
&dtsdx_c2, &dtsdy_c2, &dtsdz_c2,
&WarpX::maxwell_fdtd_solver_id);
}
if (cost) {
Box cbx = mfi.tilebox(IntVect{AMREX_D_DECL(0,0,0)});
if (patch_type == PatchType::coarse) cbx.refine(rr);
wt = (amrex::second() - wt) / cbx.d_numPts();
auto costfab = cost->array(mfi);
amrex::ParallelFor(cbx,
[=] AMREX_GPU_DEVICE (int i, int j, int k)
{
costfab(i,j,k) += wt;
});
}
}
if (do_pml && pml[lev]->ok())
{
if (F) pml[lev]->ExchangeF(patch_type, F);
const auto& pml_B = (patch_type == PatchType::fine) ? pml[lev]->GetB_fp() : pml[lev]->GetB_cp();
const auto& pml_E = (patch_type == PatchType::fine) ? pml[lev]->GetE_fp() : pml[lev]->GetE_cp();
const auto& pml_F = (patch_type == PatchType::fine) ? pml[lev]->GetF_fp() : pml[lev]->GetF_cp();
#ifdef _OPENMP
#pragma omp parallel if (Gpu::notInLaunchRegion())
#endif
for ( MFIter mfi(*pml_E[0], TilingIfNotGPU()); mfi.isValid(); ++mfi )
{
const Box& tex = mfi.tilebox(Ex_nodal_flag);
const Box& tey = mfi.tilebox(Ey_nodal_flag);
const Box& tez = mfi.tilebox(Ez_nodal_flag);
WRPX_PUSH_PML_EVEC(
tex.loVect(), tex.hiVect(),
tey.loVect(), tey.hiVect(),
tez.loVect(), tez.hiVect(),
BL_TO_FORTRAN_3D((*pml_E[0])[mfi]),
BL_TO_FORTRAN_3D((*pml_E[1])[mfi]),
BL_TO_FORTRAN_3D((*pml_E[2])[mfi]),
BL_TO_FORTRAN_3D((*pml_B[0])[mfi]),
BL_TO_FORTRAN_3D((*pml_B[1])[mfi]),
BL_TO_FORTRAN_3D((*pml_B[2])[mfi]),
&dtsdx_c2, &dtsdy_c2, &dtsdz_c2);
if (pml_F)
{
WRPX_PUSH_PML_EVEC_F(
tex.loVect(), tex.hiVect(),
tey.loVect(), tey.hiVect(),
tez.loVect(), tez.hiVect(),
BL_TO_FORTRAN_3D((*pml_E[0])[mfi]),
BL_TO_FORTRAN_3D((*pml_E[1])[mfi]),
BL_TO_FORTRAN_3D((*pml_E[2])[mfi]),
BL_TO_FORTRAN_3D((*pml_F )[mfi]),
&dtsdx_c2, &dtsdy_c2, &dtsdz_c2,
&WarpX::maxwell_fdtd_solver_id);
}
}
}
}
void
WarpX::EvolveF (Real a_dt, DtType a_dt_type)
{
if (!do_dive_cleaning) return;
for (int lev = 0; lev <= finest_level; ++lev)
{
EvolveF(lev, a_dt, a_dt_type);
}
}
void
WarpX::EvolveF (int lev, Real a_dt, DtType a_dt_type)
{
if (!do_dive_cleaning) return;
EvolveF(lev, PatchType::fine, a_dt, a_dt_type);
if (lev > 0) EvolveF(lev, PatchType::coarse, a_dt, a_dt_type);
}
void
WarpX::EvolveF (int lev, PatchType patch_type, Real a_dt, DtType a_dt_type)
{
if (!do_dive_cleaning) return;
BL_PROFILE("WarpX::EvolveF()");
static constexpr Real mu_c2 = PhysConst::mu0*PhysConst::c*PhysConst::c;
int patch_level = (patch_type == PatchType::fine) ? lev : lev-1;
const auto& dx = WarpX::CellSize(patch_level);
const std::array<Real,3> dtsdx {a_dt/dx[0], a_dt/dx[1], a_dt/dx[2]};
MultiFab *Ex, *Ey, *Ez, *rho, *F;
if (patch_type == PatchType::fine)
{
Ex = Efield_fp[lev][0].get();
Ey = Efield_fp[lev][1].get();
Ez = Efield_fp[lev][2].get();
rho = rho_fp[lev].get();
F = F_fp[lev].get();
}
else
{
Ex = Efield_cp[lev][0].get();
Ey = Efield_cp[lev][1].get();
Ez = Efield_cp[lev][2].get();
rho = rho_cp[lev].get();
F = F_cp[lev].get();
}
const int rhocomp = (a_dt_type == DtType::FirstHalf) ? 0 : 1;
MultiFab src(rho->boxArray(), rho->DistributionMap(), 1, 0);
ComputeDivE(src, 0, {Ex,Ey,Ez}, dx);
MultiFab::Saxpy(src, -mu_c2, *rho, rhocomp, 0, 1, 0);
MultiFab::Saxpy(*F, a_dt, src, 0, 0, 1, 0);
if (do_pml && pml[lev]->ok())
{
const auto& pml_F = (patch_type == PatchType::fine) ? pml[lev]->GetF_fp() : pml[lev]->GetF_cp();
const auto& pml_E = (patch_type == PatchType::fine) ? pml[lev]->GetE_fp() : pml[lev]->GetE_cp();
#ifdef _OPENMP
#pragma omp parallel if (Gpu::notInLaunchRegion())
#endif
for ( MFIter mfi(*pml_F, TilingIfNotGPU()); mfi.isValid(); ++mfi )
{
const Box& bx = mfi.tilebox();
WRPX_PUSH_PML_F(bx.loVect(), bx.hiVect(),
BL_TO_FORTRAN_ANYD((*pml_F )[mfi]),
BL_TO_FORTRAN_ANYD((*pml_E[0])[mfi]),
BL_TO_FORTRAN_ANYD((*pml_E[1])[mfi]),
BL_TO_FORTRAN_ANYD((*pml_E[2])[mfi]),
&dtsdx[0], &dtsdx[1], &dtsdx[2]);
}
}
}
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