WarpXSumGuardCells.H File Reference

#include <AMReX_MultiFab.H>

Go to the source code of this file.

Functions
void	WarpXSumGuardCells (amrex::MultiFab &mf, const amrex::Periodicity &period, const int icomp=0, const int ncomp=1)
	Sum the values of mf, where the different boxes overlap (i.e. in the guard cells) More...
void	WarpXSumGuardCells (amrex::MultiFab &dst, amrex::MultiFab &src, const amrex::Periodicity &period, const int icomp=0, const int ncomp=1)
	Sum the values of src where the different boxes overlap (i.e. in the guard cells) and copy them into dst More...

Function Documentation

WarpXSumGuardCells() [1/2]

void WarpXSumGuardCells ( amrex::MultiFab &  mf, const amrex::Periodicity &  period, const int  icomp = 0, const int  ncomp = 1  )

inline

Sum the values of mf, where the different boxes overlap (i.e. in the guard cells)

This is typically called for the sources of the Maxwell equations (J/rho) after deposition from the macroparticles.

• When WarpX is compiled with a finite-difference scheme: this only updates the valid cells of mf
• When WarpX is compiled with a spectral scheme (WARPX_USE_PSATD): this updates both the valid cells and guard cells. (This is because a spectral solver requires the value of the sources over a large stencil.)

WarpXSumGuardCells() [2/2]

void WarpXSumGuardCells ( amrex::MultiFab &  dst, amrex::MultiFab &  src, const amrex::Periodicity &  period, const int  icomp = 0, const int  ncomp = 1  )

inline

Sum the values of src where the different boxes overlap (i.e. in the guard cells) and copy them into dst

This is typically called for the sources of the Maxwell equations (J/rho) after deposition from the macroparticles + filtering.

• When WarpX is compiled with a finite-difference scheme: this only updates the valid cells of dst
• When WarpX is compiled with a spectral scheme (WARPX_USE_PSATD): this updates both the valid cells and guard cells. (This is because a spectral solver requires the value of the sources over a large stencil.)

Note: i_comp is the component where the results will be stored in dst; The component from which we copy in src is always 0.