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#include <limits>
#include <ParticleContainer.H>
#include <ParticleIterator.H>
#include <WarpX_f.H>
#include <WarpX.H>
bool WarpXParticleContainer::do_tiling = 0;
IntVect WarpXParticleContainer::tile_size { D_DECL(1024000,8,8) };
WarpXParticleContainer::WarpXParticleContainer (AmrCore* amr_core, int ispecies)
: ParticleContainer<PIdx::nattribs,0,std::vector<Particle<PIdx::nattribs,0> > >
(amr_core->GetParGDB())
, species_id(ispecies)
{
this->SetVerbose(0);
m_particles.reserve(m_gdb->maxLevel()+1);
m_particles.resize (m_gdb->finestLevel()+1);
ReadParameters();
}
void
WarpXParticleContainer::ReadParameters ()
{
static bool initialized = false;
if (!initialized)
{
ParmParse pp("particles");
pp.query("do_tiling", do_tiling);
Array<int> ts(BL_SPACEDIM);
if (pp.queryarr("tile_size", ts)) {
tile_size = IntVect(ts);
}
initialized = true;
}
}
void
WarpXParticleContainer::AddNParticles (int n, const Real* x, const Real* y, const Real* z,
const Real* vx, const Real* vy, const Real* vz,
int nattr, const Real* attr, int uniqueparticles)
{
const int lev = 0;
BL_ASSERT(nattr == 1);
const Real* weight = attr;
auto npart_before = TotalNumberOfParticles(); // xxxxx move this into if (verbose > xxx)
int gid = 0;
int ibegin, iend;
if (uniqueparticles) {
ibegin = 0;
iend = n;
} else {
int myproc = ParallelDescriptor::MyProc();
int nprocs = ParallelDescriptor::NProcs();
int navg = n/nprocs;
int nleft = n - navg * nprocs;
if (myproc < nleft) {
ibegin = myproc*(navg+1);
iend = ibegin + navg+1;
} else {
ibegin = myproc*navg + nleft;
iend = ibegin + navg;
}
}
for (int i = ibegin; i < iend; ++i)
{
ParticleType p;
p.m_id = ParticleBase::NextID();
p.m_cpu = ParallelDescriptor::MyProc();
p.m_lev = lev;
p.m_grid = gid;
#if (BL_SPACEDIM == 3)
p.m_pos[0] = x[i];
p.m_pos[1] = y[i];
p.m_pos[2] = z[i];
#else
p.m_pos[0] = x[i];
p.m_pos[1] = z[i];
#endif
p.m_data[PIdx::w] = weight[i];
for (int i = 1; i < PIdx::nattribs; i++) {
p.m_data[i] = 0;
}
p.m_data[PIdx::ux] = vx[i];
p.m_data[PIdx::uy] = vy[i];
p.m_data[PIdx::uz] = vz[i];
if (ParticleBase::Where(p,m_gdb)) // this will update m_lev, m_grid, and m_cell
{
gid = p.m_grid;
m_particles[p.m_lev][p.m_grid].push_back(p);
}
}
Redistribute(true);
auto npart_after = TotalNumberOfParticles(); // xxxxx move this into if (verbose > xxx)
if (ParallelDescriptor::IOProcessor()) {
std::cout << "Total number of particles added: " << npart_after - npart_before << std::endl;
}
}
std::unique_ptr<MultiFab>
WarpXParticleContainer::GetChargeDensity (int lev, bool local)
{
const Geometry& gm = m_gdb->Geom(lev);
const BoxArray& ba = m_gdb->ParticleBoxArray(lev);
BoxArray nba = ba;
nba.surroundingNodes();
#if (BL_SPACEDIM == 3)
const Real* dx = gm.CellSize();
#elif (BL_SPACEDIM == 2)
Real dx[3] = { gm.CellSize(0), std::numeric_limits<Real>::quiet_NaN(), gm.CellSize(1) };
#endif
const int ng = WarpX::nox;
auto rho = std::unique_ptr<MultiFab>(new MultiFab(nba,1,ng));
rho->setVal(0.0);
Array<Real> xp, yp, zp, wp;
PartIterInfo info {lev, do_tiling, tile_size};
for (PartIter pti(*this, info); pti.isValid(); ++pti)
{
const int gid = pti.index();
const Box& vbx = pti.validbox();
const long np = pti.numParticles();
// Data on the grid
FArrayBox& rhofab = (*rho)[gid];
xp.resize(np);
yp.resize(np);
zp.resize(np);
wp.resize(np);
pti.foreach([&](int i, ParticleType& p) {
#if (BL_SPACEDIM == 3)
xp[i] = p.m_pos[0];
yp[i] = p.m_pos[1];
zp[i] = p.m_pos[2];
#elif (BL_SPACEDIM == 2)
xp[i] = p.m_pos[0];
yp[i] = std::numeric_limits<Real>::quiet_NaN();
zp[i] = p.m_pos[1];
#endif
wp[i] = p.m_data[PIdx::w];
});
const Box& box = BoxLib::enclosedCells(ba[gid]);
BL_ASSERT(box == vbx);
#if (BL_SPACEDIM == 3)
long nx = box.length(0);
long ny = box.length(1);
long nz = box.length(2);
#elif (BL_SPACEDIM == 2)
long nx = box.length(0);
long ny = 0;
long nz = box.length(1);
#endif
RealBox grid_box = RealBox( box, gm.CellSize(), gm.ProbLo() );
#if (BL_SPACEDIM == 3)
const Real* xyzmin = grid_box.lo();
#elif (BL_SPACEDIM == 2)
Real xyzmin[3] = { grid_box.lo(0), std::numeric_limits<Real>::quiet_NaN(), grid_box.lo(1) };
#endif
long nxg = ng;
long nyg = ng;
long nzg = ng;
long lvect = 8;
warpx_charge_deposition(rhofab.dataPtr(),
&np, xp.data(), yp.data(), zp.data(), wp.data(),
&this->charge, &xyzmin[0], &xyzmin[1], &xyzmin[2],
&dx[0], &dx[1], &dx[2], &nx, &ny, &nz,
&nxg, &nyg, &nzg, &WarpX::nox,&WarpX::noy,&WarpX::noz,
&lvect, &WarpX::charge_deposition_algo);
}
if (!local) rho->SumBoundary(gm.periodicity());
return rho;
}
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