v5.3.1

What's New in v5.3.1

New Features

• FP stability CI (Verrou-based): random-rounding stability suite with cancellation detection, MCA significant-bits estimation, and verrou_dd_sym/verrou_dd_line bisection (#1403)
• HLLC xi-factor fix: cancellation-free (s_S - vel)/(s_L - s_S) formulation across all four HLLC model blocks (#1403)
• WENO5 cancellation-free β indicators: sum-of-squares formulation on uniform grids eliminates catastrophic cancellation in smoothness indicators (#1408)
• MTHINC interface reconstruction (#1303)
• IB collisions (#1348)
• IB particle mesh output (#1375)
• Isothermal boundary conditions for reacting flows (#1361)
• muscl_eps parameter for MUSCL limiter (#1383)
• Silo series file for ParaView time-series loading (#1381)
• --archive option for ./mfc.sh run interactive runs (#1376)

Bug Fixes

• Correct MTHINC normals on non-uniform grids (#1401)
• Fix 1D flow perturbation applying random factor twice (index aliasing) (#1397)
• Fix memory leak: free tau_Re_vf in all viscous runs, not only cylindrical (#1398)
• Fix num_fluids=3 bug on AMD (#1394)
• Fix post_process Silo coordinate corruption from assumed-shape re-mapping (#1389)
• Fix Silo build with MPI-enabled HDF5 (#1386)
• Fix IB restart and state output for adaptive-dt (cfl_dt) runs (#1382)
• Fix periodic force sum (#1377)
• IB restart hotfix (#1373)
• Correct single-precision CI testing (#1400)
• Extend CCE 19.0.0 -Oipa0 workaround to m_mpi_common.fpp (#1409)

Validation & Tooling

• riemann_solver now requires an explicit value; unimplemented option 3 removed (#1412)
• WENO/MUSCL parameter guards added with recon_type enforcement (#1391)
• Improved registry type mismatch error messages (#1390)
• AMD Flang WENO optimizations (#1374)
• Support module unload in module files; unload xalt on Phoenix GPU (#1387)

MFC v5.3.0

What's Changed

• Fix Homebrew install: by @sbryngelson in #1355
• Fix segfault in 3D cylindrical post-process boundary conditions by @sbryngelson in #1356
• Add directional, MPI, restart, and kernel regression tests by @sbryngelson in #1213
• test: show full error message on test failure by @sbryngelson in #1364
• Fix tuo mako file to support cpu build and batch scripts. by @jaguilar37 in #1362
• Fix s_axis QBMM buffer reflection azimuthal index by @sbryngelson in #1363
• refactor: unify equation/range indices into sys_idx; clean BC globals by @sbryngelson in #1365

New Contributors

• @jaguilar37 made their first contribution in #1362

Full Changelog: v5.2.2...v5.3.0

v5.2.2

What's Changed

• Fix homebrew-release workflow for retags and fork URLs by @sbryngelson in #1155
• Refresh README, docs, and YouTube integration by @sbryngelson in #1153
• Add simulation gallery entries and computer links by @sbryngelson in #1160
• Add custom 404 page and verify essential site files in CI by @sbryngelson in #1162
• fix ibm benchmark on frontier + amd by @anandrdbz in #1159
• Auto-update copyright year and add NNSA acknowledgement by @sbryngelson in #1164
• Widen scaling plot card and add link to performance page by @sbryngelson in #1165
• Include simulations.json in docs deploy by @sbryngelson in #1166
• Link to Computational Physics Group website by @sbryngelson in #1168
• Improve API documentation discoverability by @sbryngelson in #1167
• Add unified API landing page and fix footer layout by @sbryngelson in #1169
• Fix docs CI: run linkcheck before publish step by @sbryngelson in #1172
• Add CI build caching and improve benchmark workflow by @sbryngelson in #1148
• Harden benchmark workflow: retry builds, proactive clean, robust monitoring by @sbryngelson in #1170
• Skip benchmark workflow for bot review events by @sbryngelson in #1192
• Remove debug print left in post-process production code by @sbryngelson in #1185
• Add 502 to accepted status codes in .lychee.toml (#1236) by @sbryngelson in #1237
• Remove debug print left in QBMM production code by @sbryngelson in #1226
• Add Claude Code GitHub Workflow by @sbryngelson in #1238
• Fix claude pr by @sbryngelson in #1243
• Fix claude again by @sbryngelson in #1245
• Update Claude Code Review workflow to include checkout by @sbryngelson in #1247
• Update excluded paths in .fortlsrc by @sbryngelson in #1248
• Fix claude 01 by @sbryngelson in #1250
• Simplify execution of main.py by removing command checks by @sbryngelson in #1251
• Claude fix02 by @sbryngelson in #1252
• Add step to delete previous Claude review comments by @sbryngelson in #1253
• Add 504 to accepted status codes in .lychee.toml by @sbryngelson in #1254
• Add CLAUDE.md and .claude/rules/ for Claude Code guidance by @sbryngelson in #1255
• Fix GPU example, compiler matrix, and AMD flang in CLAUDE.md docs by @sbryngelson in #1256
• Refactor Claude Code Review workflow by @sbryngelson in #1257
• Claude fix by @sbryngelson in #1259
• Increase max turns from 10 to 30 in workflow by @sbryngelson in #1260
• Add fixes for Delta PrgEnv-nvidia by @wilfonba in #1258
• Modify CLAUDE code review workflow settings by @sbryngelson in #1261
• Skip self-hosted tests and benchmarks for draft PRs by @sbryngelson in #1262
• Enhance workflow with local bin setup and tool updates by @sbryngelson in #1263
• Modify Claude Code Review workflow settings by @sbryngelson in #1264
• Exclude 404.html from lychee link checks by @sbryngelson in #1265
• test by @sbryngelson in #1266
• Add AI review trigger commands to PR template by @sbryngelson in #1268
• Fix 8 HPC-sensitive bugs: GPU kernels, MPI broadcast, domain decomposition by @sbryngelson in #1242
• Trigger CI on draft-to-ready PR conversion by @sbryngelson in #1271
• Fix post_process non-MPI builds never reading input file by @sbryngelson in #1272
• Fix serial I/O missing beta for bubbles_lagrange in post_process by @sbryngelson in #1274
• Add test sharding, proactive clean, and retry logic for self-hosted CI by @sbryngelson in #1171
• Fix SIGILL crashes on GitHub runners via CPU-aware build cache keys by @sbryngelson in #1278
• Add CLI visualization command (./mfc.sh viz) by @sbryngelson in #1233
• Exclude OLCF Summit URL from link checker by @sbryngelson in #1279
• Skip coverage CI for draft PRs by @sbryngelson in #1280
• IBM Feature Improvements and Speedup by @danieljvickers in #1157
• Fix docs: remove duplicate simulations data, fix broken YouTube link by @sbryngelson in #1288
• Support Python 3.9 by @sbryngelson in #1287
• Consolidate CI infrastructure and add NFS-resilient build cache by @sbryngelson in #1285
• Fix Intel CI env corruption and remove Python 3.14 pinning by @sbryngelson in #1291
• Improve interactive visualization server performance and UI by @sbryngelson in #1293
• Work around CCE 19.0.0 compiler bugs for Cray+OpenACC builds by @sbryngelson in #1286
• Fix self-hosted CI robustness: build cache, SLURM QOS, and submit resilience by @sbryngelson in #1295
• Fix/mhd cleaning speed by @ChrisZYJ in #1235
• ci: remove nick-fields/retry wrapper and add shared sinfo-based GPU partition selection by @sbryngelson in #1299
• Fix 6 low-risk pre-process bugs (batch) by @sbryngelson in #1241
• Fix/Add Patches 13 (2D modal) and 14 (3D spherical harmonics) by @ChrisZYJ in #1163
• Remove dead ACC loop directives in s_derive_center_of_mass by @sbryngelson in #1282
• ci: harden Phoenix CI against OOM, stale NFS handles, and transient SLURM errors by @sbryngelson in #1304
• New DeltaAI Module by @wilfonba in #1306
• ci: clean stale .out files after checkout by @sbryngelson in #1308
• ci: sequential benchmark monitoring to avoid OOM kills by @sbryngelson in #1309
• Fix 6 safe pre/post-process bugs (batch) by @sbryngelson in #1240
• ci: fix monitor hang when SLURM job is preempted and requeued by @sbryngelson in #1311
• IBM force calculation simplification (Dr Bala recommendations) by @mrvandenboom in #1234
• Fix acoustic source and body force timing by @sbryngelson in #1232
• Enhance interactive 3D viz: overlays, server-side rendering, fast playback by @sbryngelson in #1310
• Replace pylint + autopep8 with ruff by @sbryngelson in #1300
• Enhance Claude CI: incremental reviews, full file context, skip-permissions by @sbryngelson in #1312
• fix: prohibit weno_Re_flux when viscous is disabled by @sbryngelson in #1315
• Refactor/moller trumbore ray triangle by @sbryngelson in #1305
• misc: Phoenix runner management scripts by @sbryngelson in #1314
• IB Memory Reduction by @danieljvickers in #1307
• Fix mv read loop hardcoding 4 instead of nnode by @sbryngelson in #1190
• Output Immersed Boundary load and state data by @mrvandenboom in #1302
• Fix WP_MOK hardcoded to 8 bytes, use storage_size for portability by @sbryngelson in #1187
• Fix missing private clauses in 3D viscous GPU loops by @sbryngelson in #1225
• Add Fortran/Fypp static analysis linter by @sbryngelson in #1193
• Add gcov-based test pruning with file-level coverage cache by @sbryngelson in #1316
• ci: skip pre-commit hook on automated cache commit by @sbryngelson in #1320
• ci: use admin token for cache push to bypass branch protection by @sbryngelson in #1321
• fix: handle stale runner processes with deleted binaries by @sbryngelson in #1322
• lint: add pylint directive check and remove dead directives by @sbryngelson in https://github.com/...

MFC v5.2.1

What's Changed

• Fix Homebrew CI and add automated release workflow by @sbryngelson in #1120
• Fix Docker build on ARM by pre-installing numpy by @sbryngelson in #1121
• Quality of life improvements for MFC toolchain by @sbryngelson in #1118
• Add CI lint gate and local precheck command by @sbryngelson in #1122
• Shell completion auto-install and pre-commit hook improvements by @sbryngelson in #1124
• Remove .cursor directory by @sbryngelson in #1128
• Update README: theming, capabilities, and cleanup by @sbryngelson in #1129
• Update MFC 5.0 citation to published CPC article by @sbryngelson in #1131
• Simplify landing page JS and fix broken scaling section by @sbryngelson in #1132
• Auto-generate description labels and extend DEPENDENCIES schema by @sbryngelson in #1133
• Add developer guide, streamline PR template, AI reviewers by @sbryngelson in #1134
• Modify .pr_agent.toml for PR commands and settings by @sbryngelson in #1137
• Add comprehensive equations documentation by @sbryngelson in #1136
• Fix empty bibliography in CI docs build by @sbryngelson in #1142
• Fix 1D multi-rank MPI_GATHERV bug in post-process silo output by @sbryngelson in #1138
• Levelset refactor by @danieljvickers in #1123
• Add physics constraint validation and auto-generated docs by @sbryngelson in #1149
• Document dimensions, stored-parameter conventions, and strengthen doc linter by @sbryngelson in #1150
• Restructure README for impact and fix broken doc links by @sbryngelson in #1151
• Refresh README, docs landing page, and scaling plots by @sbryngelson in #1152
• Fix Homebrew install crash from namelist parser by @sbryngelson in #1154

Full Changelog: v5.2.0...v5.2.1

MFC v5.2.0

MFC v5.2.0 - Exascale compressible multiphase flow solver | Docs | Paper

2025 Gordon Bell Prize Finalist - 200+ trillion grid points on 43,000+ GPUs

Highlights

• MHD divergence cleaning - Hyperbolic divergence cleaning for magnetohydrodynamics (@ChrisZYJ)
• AMD Flang compiler support - MFC now builds with AMD's Flang-based Fortran compiler (@anandrdbz)
• 5-equation relaxation - New relaxation model for the 5-equation multiphase system (@JRChreim)
• Unity Lewis implementation - For multi-species transport (@DimAdam-01)
• Immersed boundary improvements - Viscous stress and ellipse support, analytic velocities, airfoil centroids (@danieljvickers)

What's Changed

• homebrew: fix toolchain install without git metadata by @sbryngelson in #1098
• fix swapped vapor gas properties by @hyeoksu-lee in #1093
• fix broken table in documentation by @hyeoksu-lee in #1099
• 5 Equation model and relaxation by @JRChreim in #1094
• Unity Lewis Implementation by @DimAdam-01 in #1084
• Viscous stress and ellipse ib by @danieljvickers in #1102
• Tuo modules and template by @wilfonba in #1103
• This change will fix configuration issues on HiperGator by @mrvandenboom in #1112
• Pretty Comments by @danieljvickers in #1113
• Analytic mibm velocities and airfoil centroid by @danieljvickers in #1111
• Fixes mako file for Hipergator CPUs by @mrvandenboom in #1115
• AMDFlang compiler for MFC by @anandrdbz in #1116
• MHD Hyperbolic Divergence Cleaning by @ChrisZYJ in #1086

New Contributors

• @mrvandenboom made their first contribution in #1112

Full Changelog: v5.1.5...v5.2.0

MFC v5.1.5

What's Changed

• homebrew: fix toolchain install without git metadata by @sbryngelson in #1096
• update python in docker files by @sbryngelson in #1097

Full Changelog: v5.1.4...v5.1.5

MFC v5.1.4

What's Changed

• Bug fix for CFL adaptive time stepping by @wilfonba in #1027
• Enable automatic versioning from Git tags by @sbryngelson in #1064
• Add example case for convergence test in 1D by @wilfonba in #1030
• Add dimension-aware long-running test notifications by @sbryngelson in #1067
• Case checking moved to Python! by @sbryngelson in #1066
• removing duplicated codes in mixture rules for EE bubbles by @hyeoksu-lee in #1071
• Constraints by @sbryngelson in #1072
• fix by @sbryngelson in #1074
• Update GPU condition checks in frontier.mako by @sbryngelson in #1076
• fix gpu templates for real though by @sbryngelson in #1077
• Oscar Mako and module update by @mrodrig6 in #1082
• benchmarks hardening! by @sbryngelson in #1078
• Invicid two-way fluid-structure interaction by @danieljvickers in #1075
• Code Clean Up Redux by @danieljvickers in #1087
• Refactor subgrid bubble models by @hyeoksu-lee in #1085

Full Changelog: v5.1.3...v5.1.4

v5.1.3

What's Changed

• Adding internal energies to the output of the conservative variables (6-equation model) by @JRChreim in #1059
• reduce redundancy in bubbles by @hyeoksu-lee in #1062
• Make fluid variables uniform through the code by @JRChreim in #1063
• Three new examples cases by @Cowsreal in #1060
• Update cantera and pyrometheus dependencies by @sbryngelson in #1053

New Contributors

• @Cowsreal made their first contribution in #1060

Full Changelog: v5.1.2...v5.1.3

MFC v5.1.2

What's Changed

• readme by @sbryngelson in #1049
• Modify badges in README.md by @sbryngelson in #1050
• Add line numbering to gpu loops by @danieljvickers in #1029
• Complete form of the SG EoS by @JRChreim in #1057
• CI test by @sbryngelson in #1054

Full Changelog: v5.1.1...v5.1.2

MFC v5.1.1

What's Changed

• Mibm gpu optimization and io bugs by @danieljvickers in #1019
• Broken Link in README.md by @Malmahrouqi3 in #1021
• docs: Update README and CITATION.cff, add issue templates by @sbryngelson in #1022
• Homebrew formula by @sbryngelson in #1024
• Looks like the LD library path is bad by @danieljvickers in #1031
• Homebrew formula by @sbryngelson in #1037
• Fix badge links and update Homebrew command by @sbryngelson in #1038
• Homebrew formula by @sbryngelson in #1039
• Improve README formatting and add emojis by @sbryngelson in #1041
• Remove release badge from README by @sbryngelson in #1044
• Smooth MHD Convergence Cases by @danieljvickers in #1040
• Openmp cce by @prathi-wind in #1035
• Add journal information to citation by @sbryngelson in #1045
• fix homebrew a bit by @sbryngelson in #1047

Full Changelog: v5.1.0...v5.1.1