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#include <numeric>
#include <AMReX_ParallelDescriptor.H>
#include <WarpX.H>
#include <WarpX_f.H>
using namespace amrex;
void
WarpX::InitData ()
{
BL_PROFILE("WarpX::InitData()");
if (restart_chkfile.empty())
{
InitFromScratch();
ComputeDt();
}
else
{
InitFromCheckpoint();
PostRestart();
if (is_synchronized) {
ComputeDt();
}
}
ComputePMLFactors();
InitDiagnostics();
if (ParallelDescriptor::IOProcessor()) {
std::cout << "\nGrids Summary:\n";
printGridSummary(std::cout, 0, finestLevel());
}
if (restart_chkfile.empty())
{
if (plot_int > 0) {
WritePlotFile();
}
if (check_int > 0) {
WriteCheckPointFile();
}
}
}
void
WarpX::InitDiagnostics () {
if (do_boosted_frame_diagnostic) {
const Real* current_lo = geom[0].ProbLo();
const Real* current_hi = geom[0].ProbHi();
Real dt_boost = dt[0];
// Find the positions of the lab-frame box that corresponds to the boosted-frame box at t=0
Real zmin_lab = current_lo[moving_window_dir]/( (1.+beta_boost)*gamma_boost );
Real zmax_lab = current_hi[moving_window_dir]/( (1.+beta_boost)*gamma_boost );
myBFD.reset(new BoostedFrameDiagnostic(zmin_lab,
zmax_lab,
moving_window_v, dt_snapshots_lab,
num_snapshots_lab, gamma_boost, dt_boost,
moving_window_dir));
}
}
void
WarpX::InitFromScratch ()
{
const Real time = 0.0;
AmrCore::InitFromScratch(time); // This will call MakeNewLevelFromScratch
mypc->AllocData();
mypc->InitData();
#ifdef USE_OPENBC_POISSON
InitOpenbc();
#endif
InitPML();
if (do_electrostatic) {
getLevelMasks(masks);
// the plus one is to convert from num_cells to num_nodes
getLevelMasks(gather_masks, n_buffer + 1);
}
}
void
WarpX::InitPML ()
{
if (do_pml)
{
pml[0].reset(new PML(boxArray(0), DistributionMap(0), &Geom(0), nullptr,
pml_ncell, pml_delta, 0, do_dive_cleaning, do_moving_window));
for (int lev = 1; lev <= finest_level; ++lev)
{
pml[lev].reset(new PML(boxArray(lev), DistributionMap(lev),
&Geom(lev), &Geom(lev-1),
pml_ncell, pml_delta, refRatio(lev-1)[0], do_dive_cleaning,
do_moving_window));
}
}
}
void
WarpX::ComputePMLFactors ()
{
if (do_pml)
{
for (int lev = 0; lev <= finest_level; ++lev)
{
pml[lev]->ComputePMLFactors(dt[lev],pml_type);
}
}
}
void
WarpX::PostRestart ()
{
mypc->PostRestart();
}
#ifdef USE_OPENBC_POISSON
void
WarpX::InitOpenbc ()
{
#ifndef BL_USE_MPI
static_assert(false, "must use MPI");
#endif
static_assert(BL_SPACEDIM == 3, "Openbc is 3D only");
BL_ASSERT(finestLevel() == 0);
const int lev = 0;
const Geometry& gm = Geom(lev);
const Box& gbox = gm.Domain();
int lohi[6];
warpx_openbc_decompose(gbox.loVect(), gbox.hiVect(), lohi, lohi+3);
int nprocs = ParallelDescriptor::NProcs();
int myproc = ParallelDescriptor::MyProc();
Vector<int> alllohi(6*nprocs,100000);
MPI_Allgather(lohi, 6, MPI_INT, alllohi.data(), 6, MPI_INT, ParallelDescriptor::Communicator());
BoxList bl{IndexType::TheNodeType()};
for (int i = 0; i < nprocs; ++i)
{
bl.push_back(Box(IntVect(alllohi[6*i ],alllohi[6*i+1],alllohi[6*i+2]),
IntVect(alllohi[6*i+3],alllohi[6*i+4],alllohi[6*i+5]),
IndexType::TheNodeType()));
}
BoxArray ba{bl};
Vector<int> iprocmap(nprocs+1);
std::iota(iprocmap.begin(), iprocmap.end(), 0);
iprocmap.back() = myproc;
DistributionMapping dm{iprocmap};
MultiFab rho_openbc(ba, dm, 1, 0);
MultiFab phi_openbc(ba, dm, 1, 0);
bool local = true;
const std::unique_ptr<MultiFab>& rho = mypc->GetChargeDensity(lev, local);
rho_openbc.setVal(0.0);
rho_openbc.copy(*rho, 0, 0, 1, rho->nGrow(), 0, gm.periodicity(), FabArrayBase::ADD);
const Real* dx = gm.CellSize();
warpx_openbc_potential(rho_openbc[myproc].dataPtr(), phi_openbc[myproc].dataPtr(), dx);
BoxArray nba = boxArray(lev);
nba.surroundingNodes();
MultiFab phi(nba, DistributionMap(lev), 1, 0);
phi.copy(phi_openbc, gm.periodicity());
#ifdef _OPENMP
#pragma omp parallel
#endif
for (MFIter mfi(phi); mfi.isValid(); ++mfi)
{
const Box& bx = mfi.validbox();
warpx_compute_E(bx.loVect(), bx.hiVect(),
BL_TO_FORTRAN_3D(phi[mfi]),
BL_TO_FORTRAN_3D((*Efield[lev][0])[mfi]),
BL_TO_FORTRAN_3D((*Efield[lev][1])[mfi]),
BL_TO_FORTRAN_3D((*Efield[lev][2])[mfi]),
dx);
}
}
#endif
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