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xhat bounders capture MPI.COMM_WORLD at module scope (dead vars + logging-only); tidy for sub-communicator runs

Status: Open.

#782 In Pyomo/mpi-sppy;

· DLWoodruff opened on Jul 3, 2026

We should re-write cross-scenario cuts and L-Shaped

Status: Open.

#781 In Pyomo/mpi-sppy;

· bknueven opened on Jul 1, 2026

Defer W/prox attach past iteration 0 for agnostic (AML) guests — follow-up to #772

Status: Open.

#775 In Pyomo/mpi-sppy;

· DLWoodruff opened on Jun 27, 2026

Cross-scenario cuts abort at MPI.Win.Allocate (MPI_ERR_WIN) with more than one rank per cylinder

Status: Open.

#774 In Pyomo/mpi-sppy;

· DLWoodruff opened on Jun 27, 2026

APH + persistent solver can hang ~7 min in pyomo TeeStream output capture (worker thread never joined)

Status: Open.

#753 In Pyomo/mpi-sppy;

· DLWoodruff opened on Jun 14, 2026

flex-ranks: support the reduced_costs spoke at flexible rank ratios (Phase 7)

Status: Open.

#749 In Pyomo/mpi-sppy;

· DLWoodruff opened on Jun 12, 2026

Flexible ranks: per-field coherence read-outcome diagnostic (miss rate / why a bounds cylinder reports infrequently)

Status: Open.

#742 In Pyomo/mpi-sppy;

· DLWoodruff opened on May 30, 2026

CrossScenarioCutSpoke never fetches its receive buffers (make_cut never fires); also untested

Status: Open.

#728 In Pyomo/mpi-sppy;

· DLWoodruff opened on May 24, 2026

Flexible ranks: replace fullcomm.allgather layout exchange with a scalable scheme before production use

Status: Open.

#726 In Pyomo/mpi-sppy;

· DLWoodruff opened on May 24, 2026

Move example auxiliary functions into <model>_auxiliary.py to declutter intro examples

Status: Open.

#676 In Pyomo/mpi-sppy;

· DLWoodruff opened on May 4, 2026

Cut-pool management for cross-scenario and xhat feasibility cuts

Status: Open.

#670 In Pyomo/mpi-sppy;

· DLWoodruff opened on Apr 23, 2026

Extensions to DW decomposition

Status: Open.

#648 In Pyomo/mpi-sppy;

· bknueven opened on Apr 3, 2026