Issues

• CPU: host memory is ~20-40% higher in 26.09/26.10 than in 26.03, and particles.do_tiling = 0 lowers host memory in every version

  bug
  BLAST-WarpX/warpx#7385 · Filter by author yanghf263 opened on Oct 9, 2026

• variable-based file erased upon checkpoint restart

  bug: affects latest releasebugcomponent: checkpoint/restartcomponent: openPMD
  BLAST-WarpX/warpx#7365 · Filter by author titoiride opened on Oct 8, 2026
  1

  

• Hybrid-PIC run hangs at step 0 on 2 nodes with AMReX 26.10 (global particle Redistribute; completes on 26.03; workaround particles.do_one_sided_comms = 1)

  bug
  BLAST-WarpX/warpx#7352 · Filter by author yanghf263 opened on Oct 7, 2026

• Unpredictable behaviour initialising species from external file

  bug
  BLAST-WarpX/warpx#7278 · Filter by author ibranajmudin opened on Sep 16, 2026
  1

• Most recent conda-forge lapackpp version not compatible with recent WarpX releases

  backend: cudabug: affects latest releasebugcomponent: spectralcomponent: third partygeometry: RZinstallquestion
  BLAST-WarpX/warpx#7256 · Filter by author plasmahomie opened on Sep 9, 2026
  5

  

• Address review comments in #6141

  component: collisionscomponent: QED
  Task

  BLAST-WarpX/warpx#7241 · Filter by author EZoni opened on Sep 3, 2026
  

• Darwin solver: the output E field mixes two different times

  question
  BLAST-WarpX/warpx#7179 · Filter by author RemiLehe opened on Aug 20, 2026
  1

• Inconsistent potential and axial electric field in RZ vs 3D embedded-boundary simulation

  bug
  BLAST-WarpX/warpx#7165 · Filter by author WalterRieck opened on Aug 14, 2026
  

• B_ext_particle_init_style = read_from_file silently applies zero field when the species has do_not_deposit/do_not_gather set (do_not_gather = 1)

  bug
  BLAST-WarpX/warpx#7149 · Filter by author Fusion4All opened on Aug 10, 2026
  

• Charge deposition loses single-precision guard that current deposition applies (affects rho)

  component: depositionprecision
  BLAST-WarpX/warpx#7118 · Filter by author simonrowland opened on Aug 2, 2026
  1

  

• Particle reflection from EB: limitations

  component: boundaryquestion
  BLAST-WarpX/warpx#7089 · Filter by author RemiLehe opened on Jul 21, 2026
  

• Energy-conservation with Darwin solver

  question
  BLAST-WarpX/warpx#7080 · Filter by author RemiLehe opened on Jul 20, 2026
  2

  

• Compilation error in MultiParticleContainer on Aurora

  install
  BLAST-WarpX/warpx#7071 · Filter by author zippylab opened on Jul 17, 2026
  3

• Relocation failed in cuda-enabled install

  backend: cudainstallquestion
  BLAST-WarpX/warpx#7039 · Filter by author VictorEijkhout opened on Jul 9, 2026
  5

  

• Generalize the handling of dielectric materials in WarpX

  enhancement
  BLAST-WarpX/warpx#6997 · Filter by author atmyers opened on Jun 30, 2026
  

• Velocity Coincidence Thinning does not work properly in RZ geometry

  bug
  BLAST-WarpX/warpx#6962 · Filter by author ncook882 opened on Jun 23, 2026
  1

  

• nonzero scattered EM fields with Nfluxpercell initialization of a charge neutralized electron beam

  bug
  BLAST-WarpX/warpx#6923 · Filter by author rupenether opened on Jun 3, 2026
  

• Erroneous arithmetic operation with EB and MR refinement ratio (4 4 4) or anisotropic (2 2 1)

  question
  BLAST-WarpX/warpx#6874 · Filter by author oshapoval opened on May 19, 2026
  

• temperature profile and MJ distribution

  bug
  BLAST-WarpX/warpx#6872 · Filter by author Tissot11 opened on May 19, 2026
  4

  

• Anisotropic refinement ratio (e.g. 2 2 1) crashes with EBs: 'Geometry not found' in EB index space

  BLAST-WarpX/warpx#6870 · Filter by author RemiLehe opened on May 19, 2026
  

• Possible spurious electrostatic field artifacts near Embedded Boundary in RZ vacuum simulation

  bugcomponent: boundarygeometry: RZ
  BLAST-WarpX/warpx#6858 · Filter by author MaodeXiong opened on May 14, 2026
  1

• openPMD BTD Performance: FlattenSteps

  component: openPMD
  BLAST-WarpX/warpx#6778 · Filter by author ax3l opened on Apr 14, 2026
  2

  

• Discussion: Reduced Speed of Light (RSOL) (Follow-up to PR #6725)

  enhancement
  BLAST-WarpX/warpx#6769 · Filter by author tomzhu0225 opened on Apr 12, 2026
  8

• FillBoundary Semantics Inconsistent

  cleaningcomponent: ABLASTRcomponent: parallelization
  BLAST-WarpX/warpx#6761 · Filter by author ax3l opened on Apr 10, 2026

• GetMaxGuardCell() returns 1 instead of 2 for Yee-Like Solvers

  bug: affects latest releasebugcomponent: FDTDcomponent: parallelization
  BLAST-WarpX/warpx#6760 · Filter by author ax3l opened on Apr 10, 2026