Skip SortForDeposition if do_not_deposit (BLAST-WarpX#6267)

roelof-groenewald · web-flow · commit 23b1ad50f47c · 2025-10-15T15:32:04.000Z
In large 3d cases where we have lots of neutral particles this change
sped up the simulation from on average getting 0.91 steps/s to 1.45
steps/s.

Signed-off-by: roelof-groenewald &lt;regroenewald@gmail.com&gt;
diff --git a/Source/Particles/MultiParticleContainer.cpp b/Source/Particles/MultiParticleContainer.cpp
@@ -776,6 +776,7 @@ MultiParticleContainer::SortParticlesByBin (
 {
     for (auto& pc : allcontainers) {
         if (sort_particles_for_deposition) {
+            if (pc->do_not_deposit) { continue; }
             pc->SortParticlesForDeposition(sort_idx_type);
         } else {
             pc->SortParticlesByBin(bin_size);

Original file line number	Diff line number	Diff line change
`@@ -776,6 +776,7 @@ MultiParticleContainer::SortParticlesByBin (`
`776`	`776`	`{`
`777`	`777`	`for (auto& pc : allcontainers) {`
`778`	`778`	`if (sort_particles_for_deposition) {`
	`779`	`+ if (pc->do_not_deposit) { continue; }`
`779`	`780`	`pc->SortParticlesForDeposition(sort_idx_type);`
`780`	`781`	`} else {`
`781`	`782`	`pc->SortParticlesByBin(bin_size);`