Release Notes
Added
- Cut selection observability -- New
CutSelectionRecord and
StageSelectionRecord data model in cobre-core. Per-stage cut selection
statistics (cuts populated, active before/after, deactivated) are written to
training/cut_selection/iterations.parquet by both CLI and Python bindings.
Dictionary and schema definitions added to cobre-io.
- Configurable simplex strategy --
simplex_strategy: Option<u32> in
TrainingSolverConfig allows benchmarking HiGHS strategies (0=auto, 1=dual,
4=primal) without code changes. Threaded through BroadcastConfig.
- Backward pass instrumentation -- New timing columns in solver statistics:
cut_sync_ms, state_exchange_ms, cut_batch_build_ms, rayon_overhead_ms,
and solve_with_basis overhead tracking. All propagated to Parquet output.
- Cut selection integration tests -- D17 (Level1) and D18 (Lml1) regression
tests validating convergence with bounded pool growth, re-deactivation safety,
and memory_window boundary behavior.
- Documentation overhaul -- Slimmed README (218→74 lines), rewrote book
introduction with audience paths, added NEWAVE migration guide, "What Cobre
Solves" page, and Python quickstart. Brand CSS with copper headings and
flow-blue links.
- Quality tooling -- Pre-commit hook (
scripts/pre-commit), Python parity
checker (scripts/check_python_parity.py), CLAUDE.md version currency checker
(scripts/check_claudemd_version.py). Release checklist added to
CONTRIBUTING.md.
Changed
- Backward pass performance -- Sparse cut injection precomputes nonzero
state index masks from per-hydro AR orders, skipping structurally zero
coefficients (~29.5% NNZ reduction). Openings 1+ use solver.solve() (HiGHS
internal hot-start) instead of solve_with_basis, eliminating ~95% of basis
installation overhead. HashMap<usize, u64> binding slot increments replaced
with Vec<u64> indexed by pool slot. Backward coefficient buffers
pre-allocated and overwritten in-place via copy_from_slice.
Fixed
- Multi-rank cut sync -- Per-stage cut sync (
allgatherv) moved from
post-sweep loop into the backward per-stage loop, fixing a correctness
violation (DEC-009) for multi-rank MPI runs.
- Cut selection -- Fixed cut selection event propagation and Parquet output
wiring.
- Python parity -- Added 3 missing output writes to
cobre-python
(scaling report, training solver stats, simulation solver stats).
- Clippy compliance -- Removed 3 dead code items (unused import, dead field,
dead method), reduced too_many_arguments suppressions from 15 to 12,
fixed cast_possible_wrap and doc backtick warnings.
cobre-cli 0.2.0
Install cobre-cli 0.2.0
Install prebuilt binaries via shell script
curl --proto '=https' --tlsv1.2 -LsSf https://github.com/cobre-rs/cobre/releases/download/v0.2.0/cobre-cli-installer.sh | sh
Install prebuilt binaries via powershell script
powershell -ExecutionPolicy Bypass -c "irm https://github.com/cobre-rs/cobre/releases/download/v0.2.0/cobre-cli-installer.ps1 | iex"
Download cobre-cli 0.2.0
cobre-mcp 0.2.0
Install cobre-mcp 0.2.0
Install prebuilt binaries via shell script
curl --proto '=https' --tlsv1.2 -LsSf https://github.com/cobre-rs/cobre/releases/download/v0.2.0/cobre-mcp-installer.sh | sh
Install prebuilt binaries via powershell script
powershell -ExecutionPolicy Bypass -c "irm https://github.com/cobre-rs/cobre/releases/download/v0.2.0/cobre-mcp-installer.ps1 | iex"
Download cobre-mcp 0.2.0
