7Mar2024

These are the major changes in this release:

• Port global and prob surface reactions to Kokkos by Stan Moore (SNL) in #396
• Introduce nflux_incident and mflux_incident to the compute_surf command by Tim Teichmann (KIT, ITEP): in #416
• Add variable Np support to the fix emit/surf command by Steve Plimpton (SNL retired) in #409
• Fix random and proc style balance_grid input parse by Georgii Oblapenko (DLR) in #419
• Make normfactor computation consistent with surfaces for axisymm case by Georgii Oblapenko (DLR) in #421
• Grid dimensions parsing fix by Georgii Oblapenko (DLR) in #422
• Update Kokkos library version bundled with SPARTA to v4.0.1 by Stan Moore (SNL) and Kokkos developers in #408
• Add Kokkos SYCL Makefile by Stan Moore (SNL) in #423
• Do not emit particles in cells that are outside of the flow volume by Tim Teichmann (KIT) in #431
• Fixed reaction energy checks in tce/qk react style by Georgii Oblapenko (DLR) in #425
• Update Boltzmann constant to CODATA 2018 adjustment by Tim Teichmann (KIT) in #426
• Add variable time stepping capability by Alan Stagg (SNL) in #385
• Extend dump surf command with the option to dump the area of surface elements to file by Tim Teichmann (KIT) in #438
• Add an option to compute surf to compute the chemical energy due to catalytic surface reactions by Arnaud Borner (NASA Ames) in #278
• Fix typos in documentation by Chonglin Zhang (UND) and Stan Moore (SNL) in #452
• TCE chemistry enhancement (new option) + option to compute chemistry rates without performing reaction by Arnaud Borner (NASA Ames) and Mitchell Gosma (UIUC) in #279
• Add Kokkos support for FFTs by James Almgren-Bell (UT Austin), Sam Mish (UC Davis), and Stan Moore (SNL) in #451
• Enhance functionality of custom attributes for particles, grid cells, and surface elements by Steve Plimpton (SNL retired) in #428
• Add support for charge to particle-style variables by Steve Plimpton (SNL retired) in #410

Other small changes and bugfixes:

• Steve Plimpton (SNL retired): #433, #441, #442, #454
• Stan Moore (SNL): #411, #415, #417, #420, #432, #434, #437, #444, #456, #457, #458
• Evan Harvey (SNL) #453

Backwards Compatibility

Due to changes in the the format of the binary restart file, restart files written by older versions of SPARTA cannot be read by this latest version, and restart files written by this latest version cannot be read by older versions of SPARTA.