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#include <WarpX.H>
#include <AMReX_BLProfiler.H>
using namespace amrex;
void
WarpX::LoadBalance ()
{
BL_PROFILE_REGION("LoadBalance");
BL_PROFILE("WarpX::LoadBalance()");
AMREX_ALWAYS_ASSERT(costs[0] != nullptr);
for (int lev = 0; lev <= finestLevel(); ++lev)
{
const Real nboxes = costs[lev]->size();
const Real nprocs = ParallelDescriptor::NProcs();
const int nmax = static_cast<int>(std::ceil(nboxes/nprocs*load_balance_knapsack_factor));
const DistributionMapping newdm = (load_balance_with_sfc)
? DistributionMapping::makeSFC(*costs[lev], false)
: DistributionMapping::makeKnapSack(*costs[lev], nmax);
RemakeLevel(lev, t_new[lev], boxArray(lev), newdm);
}
mypc->Redistribute();
}
void
WarpX::RemakeLevel (int lev, Real time, const BoxArray& ba, const DistributionMapping& dm)
{
if (ba == boxArray(lev))
{
if (ParallelDescriptor::NProcs() == 1) return;
#ifdef WARPX_DO_ELECTROSTATIC
AMREX_ALWAYS_ASSERT(masks[lev] == nullptr);
AMREX_ALWAYS_ASSERT(gather_masks[lev] == nullptr);
#endif // WARPX_DO_ELECTROSTATIC
// Fine patch
const auto& period = Geom(lev).periodicity();
for (int idim=0; idim < 3; ++idim)
{
{
const IntVect& ng = Bfield_fp[lev][idim]->nGrowVect();
auto pmf = std::unique_ptr<MultiFab>(new MultiFab(Bfield_fp[lev][idim]->boxArray(),
dm, 1, ng));
pmf->Redistribute(*Bfield_fp[lev][idim], 0, 0, 1, ng);
Bfield_fp[lev][idim] = std::move(pmf);
}
{
const IntVect& ng = Efield_fp[lev][idim]->nGrowVect();
auto pmf = std::unique_ptr<MultiFab>(new MultiFab(Efield_fp[lev][idim]->boxArray(),
dm, 1, ng));
pmf->Redistribute(*Efield_fp[lev][idim], 0, 0, 1, ng);
Efield_fp[lev][idim] = std::move(pmf);
}
{
const IntVect& ng = current_fp[lev][idim]->nGrowVect();
auto pmf = std::unique_ptr<MultiFab>(new MultiFab(current_fp[lev][idim]->boxArray(),
dm, 1, ng));
current_fp[lev][idim] = std::move(pmf);
current_fp_owner_masks[lev][idim] = std::move(current_fp[lev][idim]->OwnerMask(period));
}
if (current_store[lev][idim])
{
const IntVect& ng = current_store[lev][idim]->nGrowVect();
auto pmf = std::unique_ptr<MultiFab>(new MultiFab(current_store[lev][idim]->boxArray(),
dm, 1, ng));
// no need to redistribute
current_store[lev][idim] = std::move(pmf);
}
}
if (F_fp[lev] != nullptr) {
const IntVect& ng = F_fp[lev]->nGrowVect();
auto pmf = std::unique_ptr<MultiFab>(new MultiFab(F_fp[lev]->boxArray(),
dm, 1, ng));
pmf->Redistribute(*F_fp[lev], 0, 0, 1, ng);
F_fp[lev] = std::move(pmf);
}
if (rho_fp[lev] != nullptr) {
const int nc = rho_fp[lev]->nComp();
const IntVect& ng = rho_fp[lev]->nGrowVect();
auto pmf = std::unique_ptr<MultiFab>(new MultiFab(rho_fp[lev]->boxArray(),
dm, nc, ng));
rho_fp[lev] = std::move(pmf);
rho_fp_owner_masks[lev] = std::move(rho_fp[lev]->OwnerMask(period));
}
// Aux patch
if (lev == 0)
{
for (int idim = 0; idim < 3; ++idim) {
Bfield_aux[lev][idim].reset(new MultiFab(*Bfield_fp[lev][idim], amrex::make_alias, 0, 1));
Efield_aux[lev][idim].reset(new MultiFab(*Efield_fp[lev][idim], amrex::make_alias, 0, 1));
}
} else {
for (int idim=0; idim < 3; ++idim)
{
{
const IntVect& ng = Bfield_aux[lev][idim]->nGrowVect();
auto pmf = std::unique_ptr<MultiFab>(new MultiFab(Bfield_aux[lev][idim]->boxArray(),
dm, 1, ng));
// pmf->Redistribute(*Bfield_aux[lev][idim], 0, 0, 1, ng);
Bfield_aux[lev][idim] = std::move(pmf);
}
{
const IntVect& ng = Efield_aux[lev][idim]->nGrowVect();
auto pmf = std::unique_ptr<MultiFab>(new MultiFab(Efield_aux[lev][idim]->boxArray(),
dm, 1, ng));
// pmf->Redistribute(*Efield_aux[lev][idim], 0, 0, 1, ng);
Efield_aux[lev][idim] = std::move(pmf);
}
}
}
// Coarse patch
if (lev > 0) {
const auto& cperiod = Geom(lev-1).periodicity();
for (int idim=0; idim < 3; ++idim)
{
{
const IntVect& ng = Bfield_cp[lev][idim]->nGrowVect();
auto pmf = std::unique_ptr<MultiFab>(new MultiFab(Bfield_cp[lev][idim]->boxArray(),
dm, 1, ng));
pmf->Redistribute(*Bfield_cp[lev][idim], 0, 0, 1, ng);
Bfield_cp[lev][idim] = std::move(pmf);
}
{
const IntVect& ng = Efield_cp[lev][idim]->nGrowVect();
auto pmf = std::unique_ptr<MultiFab>(new MultiFab(Efield_cp[lev][idim]->boxArray(),
dm, 1, ng));
pmf->Redistribute(*Efield_cp[lev][idim], 0, 0, 1, ng);
Efield_cp[lev][idim] = std::move(pmf);
}
{
const IntVect& ng = current_cp[lev][idim]->nGrowVect();
auto pmf = std::unique_ptr<MultiFab>( new MultiFab(current_cp[lev][idim]->boxArray(),
dm, 1, ng));
current_cp[lev][idim] = std::move(pmf);
current_cp_owner_masks[lev][idim] = std::move(
current_cp[lev][idim]->OwnerMask(cperiod));
}
}
if (F_cp[lev] != nullptr) {
const IntVect& ng = F_cp[lev]->nGrowVect();
auto pmf = std::unique_ptr<MultiFab>(new MultiFab(F_cp[lev]->boxArray(),
dm, 1, ng));
pmf->Redistribute(*F_cp[lev], 0, 0, 1, ng);
F_cp[lev] = std::move(pmf);
}
if (rho_cp[lev] != nullptr) {
const int nc = rho_cp[lev]->nComp();
const IntVect& ng = rho_cp[lev]->nGrowVect();
auto pmf = std::unique_ptr<MultiFab>(new MultiFab(rho_cp[lev]->boxArray(),
dm, nc, ng));
rho_cp[lev] = std::move(pmf);
rho_cp_owner_masks[lev] = std::move(rho_cp[lev]->OwnerMask(cperiod));
}
}
if (lev > 0 && (n_field_gather_buffer > 0 || n_current_deposition_buffer > 0)) {
for (int idim=0; idim < 3; ++idim)
{
if (Bfield_cax[lev][idim])
{
const IntVect& ng = Bfield_cax[lev][idim]->nGrowVect();
auto pmf = std::unique_ptr<MultiFab>(new MultiFab(Bfield_cax[lev][idim]->boxArray(),
dm, 1, ng));
// pmf->ParallelCopy(*Bfield_cax[lev][idim], 0, 0, 1, ng, ng);
Bfield_cax[lev][idim] = std::move(pmf);
}
if (Efield_cax[lev][idim])
{
const IntVect& ng = Efield_cax[lev][idim]->nGrowVect();
auto pmf = std::unique_ptr<MultiFab>(new MultiFab(Efield_cax[lev][idim]->boxArray(),
dm, 1, ng));
// pmf->ParallelCopy(*Efield_cax[lev][idim], 0, 0, 1, ng, ng);
Efield_cax[lev][idim] = std::move(pmf);
}
if (current_buf[lev][idim])
{
const IntVect& ng = current_buf[lev][idim]->nGrowVect();
auto pmf = std::unique_ptr<MultiFab>(new MultiFab(current_buf[lev][idim]->boxArray(),
dm, 1, ng));
// pmf->ParallelCopy(*current_buf[lev][idim], 0, 0, 1, ng, ng);
current_buf[lev][idim] = std::move(pmf);
}
}
if (charge_buf[lev])
{
const IntVect& ng = charge_buf[lev]->nGrowVect();
auto pmf = std::unique_ptr<MultiFab>(new MultiFab(charge_buf[lev]->boxArray(),
dm, 1, ng));
// pmf->ParallelCopy(*charge_buf[lev][idim], 0, 0, 1, ng, ng);
charge_buf[lev] = std::move(pmf);
}
if (current_buffer_masks[lev])
{
const IntVect& ng = current_buffer_masks[lev]->nGrowVect();
auto pmf = std::unique_ptr<iMultiFab>(new iMultiFab(current_buffer_masks[lev]->boxArray(),
dm, 1, ng));
// pmf->ParallelCopy(*current_buffer_masks[lev], 0, 0, 1, ng, ng);
current_buffer_masks[lev] = std::move(pmf);
}
if (gather_buffer_masks[lev])
{
const IntVect& ng = gather_buffer_masks[lev]->nGrowVect();
auto pmf = std::unique_ptr<iMultiFab>(new iMultiFab(gather_buffer_masks[lev]->boxArray(),
dm, 1, ng));
// pmf->ParallelCopy(*gather_buffer_masks[lev], 0, 0, 1, ng, ng);
gather_buffer_masks[lev] = std::move(pmf);
}
}
if (costs[lev] != nullptr) {
costs[lev].reset(new MultiFab(costs[lev]->boxArray(), dm, 1, 0));
costs[lev]->setVal(0.0);
}
SetDistributionMap(lev, dm);
}
else
{
amrex::Abort("RemakeLevel: to be implemented");
}
}
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