Two changes to the memory-only auto_suggest so a "fits" that packs into
one cube is preferred over a "fits" that spreads across multiple cubes.
Suggestion dataclass gains cubes_used and cp_placement fields.
_score_candidate: for each (CP,TP,PP) triple, try cp_placement="cube"
(historical default: CP spans cubes) and, when CP·TP fits in one cube's
PE count, also cp_placement="pe" (pack CP into intra-cube PEs). Keep
the placement with fewer cubes; break ties toward "cube".
auto_suggest: switch sort key from (pes_used ↑, pp ↑, tp ↑, cp ↑) to
(cubes_used ↑, pes_used ↑, pp ↑, tp ↑, cp ↑). Fewer cubes wins first
because a cube is the physical die-level unit; PE count is the
tiebreaker.
Sidebar caption now also displays cubes_used + cp_placement so the
user can see the packed layout at a glance. Preset-change auto-reset
also applies the picked cp_placement.
Observed effect (verified):
Qwen 3 8B / 128K decode: CP=4 TP=2, "pe" → 1 cube, 8 PEs
(was 4 cubes with default "cube")
Llama 3.1 70B / 128K: CP=4 TP=16, "cube" → 8 cubes (unchanged;
TP=16 > 8 PEs/cube, can't pack)
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
New tests/analytical_visualization/ module - an interactive dashboard
for exploring memory / latency tradeoffs of transformer inference on
the SIP architecture.
Highlights:
- 30+ model presets (Qwen, Llama 2/3/3.1, Mistral, Gemma 2, Phi 3,
DeepSeek MLA, Mixtral/Qwen 3 MoE, Grok-1, ...)
- Placement toggles: TP and CP each on PE-level vs cube-level
- CP ring variant: K/V ring vs Q+O/m/l ring (prefill); in decode the
O/m/l all-reduce is folded into S8 (no separate C1 row)
- SIP interconnect: ring / mesh2d / torus2d with matching link drawing
- Per-stage latency table with compute + memory + comm formulas,
auto-scaled ns/us/ms, colored by dominant bound
- Ring attention loop indicator on the pipeline diagram (purple arc
over S5-S8 with 'xN hops' badge)
- Tensor sharding view with optional physical PE/cube annotations
- Replication-waste + optimization-hints panel
- Save & compare configurations (config1, config2, ...): summary table
plus side-by-side per-stage attention and FFN latency, best-in-row
highlighting
- Symbol glossary with current values for every symbol used in formulas
Not tied to production sim_engine or runtime API; purely analytical
tooling for design-space exploration.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
mukesh