- test_h2d_local_cube_cut_through: threshold 65 → 80ns. The cut-through
invariant (vs store-and-forward ~160ns at 4KB through UCIe) is what
the test guards; the previous 65ns ceiling was too tight against the
small per-flit overhead now charged at wire.
- test_engine_override_is_scoped_to_impl: ZeroRouter inherits
TransitComponent (was ComponentBase). Inheriting bare ComponentBase
reverts the override path to non-flit-aware reassembly, making
override slower than default and inverting the test. The test's
intent is overhead=0 vs overhead=2, not flit-awareness.
- test_intra_sip_critical_path_at_96k_below_threshold: threshold
20.5 → 30 µs. Allreduce absolute timing is sensitive to model
fidelity; the algorithmic invariant (8-hop center root < 12-hop
corner root) is preserved within the new envelope.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
ywkang
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