JEDI Algorithm Team (Christian Sampson)

• PR adds OpenMP to HTLM updateIncTL and updateIncAD.

• Will test speedups on larger test cases.

• Starting deeper work on continuous DA with hybrid + ensemble B.

• Git-LFS test files separated for SABER/VADER (PRs merged).

Doruk Ardag (Marine / SWELL / R2D2 / Workflow)

• Shutdown: Only contractors & co-ops working.

• Ricardo (pre-furlough):

  • Multi-outer-loop tests: UFO filters may not apply in later loops unless a switch is enabled (name TBD) → consider default True.

  • Possible outer-loop state propagation issue tied to SWELL workflow config.

• Marine: Local coupled tests; R2D2v3 now tested in SWELL.

• Onboarding: Jerome/Maryam ramping on SWELL; leveraging R2D2; interest in EVA (EMC-relevant).

Workflows / Infrastructure (Eric L. / Ashley / Evan / Dom)

• cylc in Skylab: Toy models testing progressing (Ashley).

• R2D2: Client/server debt cleanup (Eric).

• spack-stack: Feature branch with Spack 1.0 integration → basis for 2.0 (target early Nov) (Evan).

• CI: Issue causing excessive timeouts in 5–10% of builds; triage ongoing (Evan).

UKMO (Michael Cooke)

• ECTRANS: Plan for multiple split MPI communicators to run ensemble waveband B models in parallel (remove sequential hybrid-B overhead).

• 4D-Var: Focusing on initial setup speed (profiling/mitigation in progress).

• Regional JOPA: Observation configs nearly ready for final trials.

OBS (IODA/UFO/USO, François V.)

• IODA PR-1701 (MRMS): Code fixed; smaller files.

• UFO: Surface operator ↔ GFS operator interface concerns under review.

• Unified Super Operator: Owners/next steps with Ricardo / François V.

CRTM (Ben Johnson)

• Sea-ice model investigation ongoing.

• IFX testing and evaluation of ongoing segfaults,  flang compilation testing ongoing
• working with NOAA STAR on AMSR3 coefficients (ODPS+ODAS), Cloud Coefficients (extending to submm)
• working with Isaac Moradi at GMAO on Cloud Coefficients (extending to submm)
• Cheng Dang returning on PolSIR funding. 

NOAA/EMC (Update w/ Dan Holdaway)

• Furlough status: EMC excepted; business-as-usual.

• GFSv17: Real-time full-res parallel with JEDI for snow/ocean/sea-ice DA.

• GCAFSv1: Real-time full-res parallel with JEDI aerosols.

• Regional: Finishing static B using GSI-BEC.

• Atmosphere: Low-res real-time JEDI-atmos parallel running alongside degraded GSI.

• GNSS-RO: Continuing operator debugging in JEDI.

• Throughput/I/O: Ongoing NetCDF chunking optimization work for HAFS/RRFS with GDIT.

• (From prior) Retrospectives for GFS planned to start end of month; science freeze during retro; 2 hurricane seasons (~6 months to generate).

NCAR/MMM (Jake Liu) — Modified

• MPAS-bundle (develop) currently building with spack-stack-1.8.0 on Derecho.

• Tests show spack-stack-1.9.2 gives comparable memory & speed to 1.8.2 for Intel & GNU; Intel build uses slightly more memory.

• Plan: Update MPAS-bundle develop to spack-stack-1.9.2 after additional tests.

Interfaces & Optimization (François Hébert)

• Static spectral B: Multithreading complete; next: waveband ensemble B, variable changes, and HTLM items for next deliverable.

• OSDF-based reader: Load step nearing completion this sprint.

• CO₂ units: Standardized to mol/mol (model-interface → GeoVaLs → UFO).

• obs2ioda: yaml-cpp → eckit.

SABER/BUMP / Tutorial (Hernan Arango)

• ROMS-JEDI tutorial completed; thanks to contributors.

• Mac (M4) builds: Spack-Stack built with gfortran; several Mac adjustments identified and reported; aware that Mac support is no longer official.

• BUMP runtime: Found cases of DEALLOCATE on non-allocated local → runtime errors / leaks; appears to be a compiler bug.

• Coding guidance: Use guards:

  • IF (.NOT. ALLOCATED(var)) ALLOCATE(...)

  • IF (ALLOCATED(var)) DEALLOCATE(var)
    Apply broadly in BUMP and related Fortran to harden runs (HPC/cloud).