26.03

Dependencies

• AMReX: 26.03
• pyAMReX: 26.03
• PICSAR-QED: 25.06
• pybind11: 3.0.2
• picmistandard: 0.34.0
• openPMD-api: 0.17.0
• Python: 3.10 - 3.14

What's Changed

• Fix memory warning in test_2d_python_wrappers_picmi by @EZoni in #6489
• Dependencies: weekly update by @github-actions[bot] in #6543
• Add documentation example for ion beam extraction from plasma source by @oshapoval in #6496
• Hybrid PIC: change definition of number of substeps by @RemiLehe in #6556
• Fix docstring error in picmi.py by @EZoni in #6559
• Replace missing Summit postprocessing documentation by @RemiLehe in #6560
• Dependencies: weekly update by @github-actions[bot] in #6561
• Pip Install: Skip diags/ by @ax3l in #6554
• Make checksum for test_3d_linear_compton_bunch_laser less brittle by @RemiLehe in #6565
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci[bot] in #6568
• Fail RTD doc on warning by @RemiLehe in #6569
• Improve performance of hybrid-PIC algorithm by @roelof-groenewald in #6567
• Docs: inputs section cleanup - simulation time by @EZoni in #6557
• Save lost particle time by @dpgrote in #6533
• Fill guard cells for EB update MFs by @roelof-groenewald in #6574
• CI: Azure Cache Revamp by @ax3l in #6577
• AMReX: development by @ax3l in #6578
• exploit symmetry to reduce deposit of diagonal mass matrices by @JustinRayAngus in #6555
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci[bot] in #6587
• Control Magnetostatic Solver Precision by @n01r in #6582
• Hybrid-PIC optimization: only call FillBoundaryE for collocated grids by @roelof-groenewald in #6575
• Add AGENTS.md file by @RemiLehe in #6482
• Fix some typos by @eebasso in #6590
• Use NoGpuSync for MLMG in computePhi by @AlexanderSinn in #6491
• Polymorphic PC by @ax3l in #6374
• Dependencies: weekly update by @github-actions[bot] in #6585
• Update profile for LUMI25.03 by @huixingjian in #6597
• simplify DefaultInitializeRuntimeAttribute() parameters by @JustinRayAngus in #6583
• Dependencies: weekly update, pybind11 v3.0.2 by @github-actions[bot] in #6600
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci[bot] in #6601
• Fix bug with external field loading from file by @roelof-groenewald in #6602
• Doc: Perlmutter Python Batch Script by @ax3l in #6603
• Fixing origin issue with vector laplacian evaluation in HybridPICSolveE by @clarkse-he in #6598
• Make FinishMassMatrices public, in ImplicitSolver by @dpgrote in #6604
• Doc: Perlmutter GCC Downgrade by @ax3l in #6609
• Add picmi flag to set do_device_synchronize by @roelof-groenewald in #6614
• Typos in parameter.rst by @eebasso in #6612
• Change mass of pre-defined elements in species_type: subtract mass of the electrons by @RemiLehe in #6518
• Hybrid-PIC: Add check if external currents are used by @roelof-groenewald in #6610
• reduce expanded fusion collision type checking. by @JustinRayAngus in #6623
• Add CLAUDE.md as symlink to AGENTS.md by @RemiLehe in #6620
• Create agent skill to add new paper highlights in the documentation by @RemiLehe in #6626
• Adjust indent in parameters.rst by @eebasso in #6632
• Take into account relativistic velocity in particle reflection test by @RemiLehe in #6619
• Implement collisions in the middle of the momentum push for electrostatic PIC by @oshapoval in #6572
• [pre-commit.ci] pre-commit autoupdate by @pre-commit-ci[bot] in #6633
• Replace WARPX_PROFILE with ABLASTR_PROFILE by @RemiLehe in #6634
• Enable mid-v push with embedded boundaries by @oshapoval in #6617
• DevUtils: automate checksum reset from Azure via PR number by @RemiLehe in #6621
• Doc: new paper in highlights – Wang et al. 2026 by @RemiLehe in #6627
• Fix luminosity diagnostics with mesh refinement by @aeriforme in #6605
• FieldGather: use Bz-specific z offset by @WeiqunZhang in #6664
• Release: WarpX 26.03 by @github-actions[bot] in #6630

New Contributors

• @huixingjian made their first contribution in #6597
• @clarkse-he made their first contribution in #6598

Full Changelog: 26.02...26.03