remove logic to subtract J_ext from plasma current in JdispFunctor

ECP-WarpX · Sep 19, 2024 · 134f1e2 · 134f1e2
1 parent 383d9f3
commit 134f1e2
Showing 1 changed file with 6 additions and 48 deletions.
diff --git a/Source/Diagnostics/ComputeDiagFunctors/JdispFunctor.cpp b/Source/Diagnostics/ComputeDiagFunctors/JdispFunctor.cpp
@@ -1,8 +1,11 @@
-/* This file is part of Warpx.
+/* Copyright 2023-2024 The WarpX Community
+ *
+ * This file is part of WarpX.
+ *
+ * Authors: Avigdor Veksler (TAE Technologies)
  *
- * Authors: Avigdor Veksler
  * License: BSD-3-Clause-LBNL
-*/
+ */
 #include "JdispFunctor.H"
 
 #include "WarpX.H"
@@ -61,51 +64,6 @@ JdispFunctor::operator() (amrex::MultiFab& mf_dst, int dcomp, const int /*i_buff
         -1, *mf_j, 0, 0, 1, Jdisp.nGrowVect()
     );
 
-    if (hybrid_pic_model) {
-        // Subtract the interpolated j_external value from j_displacement.
-        /** pointer to external currents (Jext) multifab */
-        amrex::MultiFab* mf_j_external = hybrid_pic_model->get_pointer_current_fp_external(m_lev, m_dir);
-
-        // Index type required for interpolating Jext from their respective
-        // staggering (nodal) to the Jx_displacement, Jy_displacement, Jz_displacement
-        // locations. The staggering of J_displacement is the same as the
-        // staggering for J, so we use J_stag as the interpolation map.
-        // For interp to work below, the indices of the undefined dimensions
-        // must match. We set them as (1,1,1).
-        amrex::GpuArray<int, 3> Jext_IndexType = {1, 1, 1};
-        amrex::GpuArray<int, 3> J_IndexType = {1, 1, 1};
-        amrex::IntVect Jext_stag = mf_j_external->ixType().toIntVect();
-        amrex::IntVect J_stag = mf_j->ixType().toIntVect();
-
-        // Index types for the dimensions simulated are overwritten.
-        for ( int idim = 0; idim < AMREX_SPACEDIM; ++idim) {
-            Jext_IndexType[idim] = Jext_stag[idim];
-            J_IndexType[idim] = J_stag[idim];
-        }
-
-        // Parameters for `interp` that maps from Jext to J.
-        // The "coarsening is just 1 i.e. no coarsening"
-        amrex::GpuArray<int, 3> const& coarsen = {1, 1, 1};
-
-        // Loop through the grids, and over the tiles within each grid to
-        // subtract the interpolated Jext from J_displacement.
-#ifdef AMREX_USE_OMP
-#pragma omp parallel if (amrex::Gpu::notInLaunchRegion())
-#endif
-        for ( MFIter mfi(Jdisp, TilingIfNotGPU()); mfi.isValid(); ++mfi ) {
-
-            Array4<Real> const& Jdisp_arr = Jdisp.array(mfi);
-            Array4<Real const> const& Jext = mf_j_external->const_array(mfi);
-
-            //  Loop over cells and update the Jdisp MultiFab
-            amrex::ParallelFor(mfi.tilebox(), [=] AMREX_GPU_DEVICE (int i, int j, int k){
-                // Interpolate Jext to the staggering of J
-                auto const jext_interp = ablastr::coarsen::sample::Interp(Jext, Jext_IndexType, J_IndexType, coarsen, i, j, k, 0);
-                Jdisp_arr(i, j, k, 0) -= jext_interp;
-            });
-        }
-    }
-
     InterpolateMFForDiag(mf_dst, Jdisp, dcomp, warpx.DistributionMap(m_lev),
                          m_convertRZmodes2cartesian);
 }