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move linear solvers into separate directory
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,51 @@ | ||
| #ifndef ERF_TERRAIN_POISSON_H_ | ||
| #define ERF_TERRAIN_POISSON_H_ | ||
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| #include "ERF_TerrainPoisson_3D_K.H" | ||
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| #include <AMReX_Geometry.H> | ||
| #include <AMReX_MultiFab.H> | ||
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| class TerrainPoisson | ||
| { | ||
| public: | ||
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| using RT = amrex::Real; | ||
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| TerrainPoisson (amrex::Geometry const& geom, amrex::BoxArray const& ba, | ||
| amrex::DistributionMapping const& dm, | ||
| amrex::MultiFab const* z_phys_nd); | ||
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| void apply(amrex::MultiFab& lhs, amrex::MultiFab const& rhs); | ||
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| void getFluxes(amrex::MultiFab const& phi, amrex::Array<amrex::MultiFab,AMREX_SPACEDIM>& fluxes); | ||
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| void assign(amrex::MultiFab& lhs, amrex::MultiFab const& rhs); | ||
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| void scale(amrex::MultiFab& lhs, amrex::Real fac); | ||
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| amrex::Real dotProduct(amrex::MultiFab const& v1, amrex::MultiFab const& v2); | ||
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| void increment(amrex::MultiFab& lhs, amrex::MultiFab const& rhs, amrex::Real a); | ||
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| void linComb(amrex::MultiFab& lhs, amrex::Real a, amrex::MultiFab const& rhs_a, | ||
| amrex::Real b, amrex::MultiFab const& rhs_b); | ||
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| amrex::MultiFab makeVecRHS(); | ||
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| amrex::MultiFab makeVecLHS(); | ||
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| amrex::Real norm2(amrex::MultiFab const& v); | ||
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| void precond(amrex::MultiFab& lhs, amrex::MultiFab const& rhs); | ||
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| void setToZero(amrex::MultiFab& v); | ||
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| private: | ||
| amrex::Geometry m_geom; | ||
| amrex::BoxArray m_grids; | ||
| amrex::DistributionMapping m_dmap; | ||
| const amrex::MultiFab* m_zphys; | ||
| }; | ||
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| #endif |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,137 @@ | ||
| #include "ERF_TerrainPoisson.H" | ||
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| using namespace amrex; | ||
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| TerrainPoisson::TerrainPoisson (amrex::Geometry const& geom, amrex::BoxArray const& ba, | ||
| amrex::DistributionMapping const& dm, | ||
| amrex::MultiFab const* z_phys_nd) | ||
| : m_geom(geom), | ||
| m_grids(ba), | ||
| m_dmap(dm), | ||
| m_zphys(z_phys_nd) | ||
| { | ||
| } | ||
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| void TerrainPoisson::apply(amrex::MultiFab& lhs, amrex::MultiFab const& rhs) | ||
| { | ||
| AMREX_ASSERT(rhs.nGrowVect().allGT(0)); | ||
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| auto domlo = lbound(m_geom.Domain()); | ||
| auto domhi = ubound(m_geom.Domain()); | ||
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| MultiFab& xx = const_cast<MultiFab&>(rhs); | ||
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| auto const& dxinv = m_geom.InvCellSizeArray(); | ||
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| auto const& y = lhs.arrays(); | ||
| auto const& x = xx.arrays(); | ||
| auto const& zpa = m_zphys->const_arrays(); | ||
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| // Impose periodic and internal boundary conditions | ||
| xx.FillBoundary(m_geom.periodicity()); | ||
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| // Impose top and bottom Neumann bcs | ||
| amrex::ParallelFor(xx, [=] AMREX_GPU_DEVICE (int b, int i, int j, int k) | ||
| { | ||
| if (k == domlo.z) { | ||
| x[b](i,j,k-1) = x[b](i,j,k); | ||
| } else if (k == domhi.z) { | ||
| x[b](i,j,k+1) = x[b](i,j,k); | ||
| } | ||
| }); | ||
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| auto const& xc = xx.const_arrays(); | ||
| amrex::ParallelFor(rhs, [=] AMREX_GPU_DEVICE (int b, int i, int j, int k) | ||
| { | ||
| terrpoisson_adotx(i,j,k,y[b], xc[b], zpa[b], dxinv[0], dxinv[1], dxinv[2]); | ||
| }); | ||
| } | ||
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| void TerrainPoisson::getFluxes(amrex::MultiFab const& phi, | ||
| amrex::Array<amrex::MultiFab,AMREX_SPACEDIM>& fluxes) | ||
| { | ||
| auto const& dxinv = m_geom.InvCellSizeArray(); | ||
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| auto domlo = lbound(m_geom.Domain()); | ||
| auto domhi = ubound(m_geom.Domain()); | ||
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| auto const& x = phi.const_arrays(); | ||
| auto const& zpa = m_zphys->const_arrays(); | ||
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| auto const& fx = fluxes[0].arrays(); | ||
| amrex::ParallelFor(fluxes[0], [=] AMREX_GPU_DEVICE (int b, int i, int j, int k) | ||
| { | ||
| terrpoisson_flux_x(i,j,k,fx[b],x[b],zpa[b],dxinv[0],dxinv[2]); | ||
| }); | ||
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| auto const& fy = fluxes[1].arrays(); | ||
| amrex::ParallelFor(fluxes[1], [=] AMREX_GPU_DEVICE (int b, int i, int j, int k) | ||
| { | ||
| terrpoisson_flux_y(i,j,k,fy[b],x[b],zpa[b],dxinv[1],dxinv[2]); | ||
| }); | ||
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| auto const& fz = fluxes[2].arrays(); | ||
| amrex::ParallelFor(fluxes[2], [=] AMREX_GPU_DEVICE (int b, int i, int j, int k) | ||
| { | ||
| terrpoisson_flux_z(i,j,k,fz[b],x[b],zpa[b],dxinv[0],dxinv[1],dxinv[2]); | ||
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| if (k == domlo.z) { | ||
| fz[b](i,j,k) = 0.0; | ||
| } else if (k == domhi.z+1) { | ||
| fz[b](i,j,k) = 0.0; | ||
| } | ||
| }); | ||
| } | ||
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| void TerrainPoisson::assign(amrex::MultiFab& lhs, amrex::MultiFab const& rhs) | ||
| { | ||
| MultiFab::Copy(lhs, rhs, 0, 0, 1, 0); | ||
| } | ||
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| void TerrainPoisson::scale(amrex::MultiFab& lhs, amrex::Real fac) | ||
| { | ||
| lhs.mult(fac); | ||
| } | ||
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| Real TerrainPoisson::dotProduct(amrex::MultiFab const& v1, amrex::MultiFab const& v2) | ||
| { | ||
| return MultiFab::Dot(v1, 0, v2, 0, 1, 0); | ||
| } | ||
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| void TerrainPoisson::increment(amrex::MultiFab& lhs, amrex::MultiFab const& rhs, Real a) | ||
| { | ||
| MultiFab::Saxpy(lhs, a, rhs, 0, 0, 1, 0); | ||
| } | ||
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| void TerrainPoisson::linComb(amrex::MultiFab& lhs, Real a, amrex::MultiFab const& rhs_a, | ||
| Real b, amrex::MultiFab const& rhs_b) | ||
| { | ||
| MultiFab::LinComb(lhs, a, rhs_a, 0, b, rhs_b, 0, 0, 1, 0); | ||
| } | ||
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| MultiFab TerrainPoisson::makeVecRHS() | ||
| { | ||
| return MultiFab(m_grids, m_dmap, 1, 0); | ||
| } | ||
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| MultiFab TerrainPoisson::makeVecLHS() | ||
| { | ||
| return MultiFab(m_grids, m_dmap, 1, 1); | ||
| } | ||
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| Real TerrainPoisson::norm2(amrex::MultiFab const& v) | ||
| { | ||
| return v.norm2(); | ||
| } | ||
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| void TerrainPoisson::precond(amrex::MultiFab& lhs, amrex::MultiFab const& rhs) | ||
| { | ||
| MultiFab::Copy(lhs, rhs, 0, 0, 1, 0); | ||
| } | ||
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| void TerrainPoisson::setToZero(amrex::MultiFab& v) | ||
| { | ||
| v.setVal(0); | ||
| } |
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