Week 39 · Sep 21–25, 2026

Sep 21–25, 2026

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Summary for Hall-B

• CVMFS ‘migration(s?)’ hit OSG jobs
• Added jlab.opensciencegrid.org to CVMFS checks in OSPool and JLAB (CLAS12) glideins, but many are still undefined
• Portal migrated to the dedicated jlab.opensciencegrid.org CVMFS paths
• Added portal LUND requirement: path must start with /volatile/clas12/ - (had many /work or /home etc submissions)
• GEMC2/meson and GEMC3 bumped to CCDB v1.99.8 with the SQLite and patches
• New Callgrinder action published, profiling any c++ app with customization

GEMC

• Updated GEMC2/meson and GEMC3 to CCDB v1.99.8 with upstream system SQLite support, dropping obsolete patches.
• Unified CI compilation under Meson: shared build setup, geometry generation, and profiling options in one place.
• Removed the unused SCons CI build script now that all compilation workflows are on Meson.
• Switched Valgrind profiling to a Meson debug build and explicitly picked the freshly built executable
• Added dev3 tag to ‘gemc’ module in env for GEMC3 use

OSG

• Major job failures from CVMFS; OSG said they are in a “data migration state”. Issues stayed ongoing and it was never fully clear whether they were part of that migration.
• Debug commands showed /cvmfs/jlab.opensciencegrid.org not mounted on some sites — a problem for sites without automount and without oasis/jlab.
• Portal CVMFS paths: restored main to the Oasis JLab CVMFS paths while keeping dedicated JLab paths on dev, then moved to the dedicated JLab repository. After a successful dev test, added jlab.opensciencegrid.org to the main simGrid branch and replaced the remaining legacy OASIS paths with the JLab CVMFS repository.
• OSG staff added jlab.opensciencegrid.org to the CVMFS checks in OSPool and JLAB (CLAS12) glideins.
• Added condor_status commands to the HTCondor note for checking site and CVMFS configs in both pools.
• Portal cleanup: required type-2 generator paths to start with /volatile/clas12/, fixed a clas12-config typo for high-lumi testing, and removed submissions with no LUND files or wrong paths.

Geant4

• Added the debug-image CI summary and documented Geant4 symbols for debugging and profiling.

GEMC3

• Macro option: verified execution follows all starter commands, added Geant4 macro startup with batch event control, and added startup-order regression checks.
• Published Callgrinder action — a zero-dependency Node.js GitHub Action and CLI that profiles a command under callgrind and reports config-driven per-category and per-routine CEst costs, modelled on ThreadScale. Added a from-callgrind summarize path and converted the src, clas12-systems, and clas12Tags profiling workflows to run through the action, removing the local valgrind and summary scripts.
• Added a debug-symbols gemc image variant (built on the g4install debug base) to the src Deploy and pointed the clas12-systems profiling workflow at it so Geant4/CLHEP routines resolve.
• Fixed the profiling prep step that exited on an empty G4 dataset grep by sourcing geant4-config for the dataset variables; gemc finds its Geant4 data through the installed package cache, so those variables are no longer exported. Made Callgrinder tolerate an unreadable callgrind file instead of crashing.
• Converted clas12Tags profiling to set up the GEMC2 module environment in the prep step and run gemc directly, so only gemc runs under valgrind.
• Generator examples: set both phi-spread examples to a fixed 45° polar angle; increased theta sampling to 20° and verified signed-angle momentum and cosine bounds; widened the uniform XY view and increased Gaussian XY vertex spreads to 4 and 5 mm; centered vertices inside the target with Z and XY emission angles; renamed examples and improved vertex visibility with a transparent target and angled beams. Simplified vertex cases and angular plots, added 100-event GEMC views for all 11 website examples, then documented all 17 tube-target vertex/angular examples with verified plots and interactive geometry (Analyzer plots, ~85,000 throws).
• Imported and optimized the HTCC CAD cones: cured the three beamline cones into watertight decimated solids and placed them per variation in a separate CAD system that loads from the geometry database.

Actions

• Released Callgrinder v1.0.8
• Made Callgrinder tolerant of an unreadable or empty callgrind file
• Fixed empty profiles: valgrind now runs directly on the target program (the shell execs valgrind), since valgrind does not follow exec by default.
• Table work: added a Self % column ranked by self cost with inclusive share alongside
• Ranking hotspots by self cost, then sorting by run share.
• Revised profiling quickstarts to use user applications, clarified Callgrinder and ThreadScale with runnable quickstarts, completed the annotation utility setup, and regenerated the scintillator profile summary.

Home

• Clarified fixed release tags vs. moving major tags for Marketplace publishing.
• Added Marketplace publishing, promotion, and adoption-badge guidance using ThreadScale.

Slides

• Recovered nine empty and three truncated presentations from Git LFS; verified hashes and archive integrity.