3 Commits

Author	SHA1	Message	Date
mukesh	ff7d727ddd	CCL allreduce: rename to lrab_hierarchical_allreduce + descriptive plots ... Rename the intercube all-reduce identity to lrab_hierarchical_allreduce (module, config key, distributed test) so the name reflects both levels it implements: LRAB intra-SIP (local reduce to center root + broadcast) and the hierarchical inter-SIP topology exchange (ring/torus/mesh). ADR-0032 slug kept as the stable decision id; pure rename, no logic change. Also in this batch: - ADR-0032 (EN+KO): document the shipped center-root bidirectional reduce (doc was stale corner-root); annotate ccl.yaml root_cube as a placeholder. - Rename allreduce + pe2pe latency plots to descriptive, title-matching filenames and retitle the in-plot headings; drop overview/overview_log. - Point the PPTX image refs at the new plot names. Doc + derived-artifact + rename only; no simulation behavior changed. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>	2026-05-20 20:50:48 -07:00
mukesh	1c33afec55	ADR-0032 + intra_* opposite directions in IPCQ install ... Add intra_N/S/E/W to install.py _OPPOSITE_DIR table so the intra-cube PE-to-PE namespace is symmetrical with intercube N/S/E/W. ADR-0032 documents the intercube allreduce algorithm (supersedes ADR-0029). Refresh ADR-0024/0025/0029 cross-refs and update test_intercube_sfr_config.py to cover the new intra_* mappings. Drop the obsolete test_ccl_round_robin_recv.py (replaced by intercube tests). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>	2026-04-27 16:43:01 -07:00
mukesh	1d8b9401e5	Intercube allreduce: pe0 cube-mesh reduce + multi-SIP ring/torus/mesh ... New intercube allreduce kernel replacing the old flat ring algorithms. Reduces across the 4x4 cube mesh within each SIP (pe0-only, same-lane), then inter-SIP exchange on root cube, then broadcast back. Supports ring_1d, torus_2d, and mesh_2d_no_wrap SIP topologies driven by topology.yaml. Integrated with dist.init_process_group / dist.all_reduce. New files: - src/kernbench/ccl/algorithms/intercube_allreduce.py (kernel) - src/kernbench/ccl/sfr_config.py (configure_sfr_intercube_multisip) - tests/test_allreduce_multidevice.py (config-driven, 3 topologies) - tests/test_distributed_intercube_allreduce.py (full distributed path) - tests/test_intercube_sfr_config.py (SFR wiring verification) Modified: - distributed.py: AhbmCCLBackend uses configure_sfr_intercube_multisip - topologies.py: added torus_2d, mesh_2d_no_wrap - install.py: global_E/W/N/S in _OPPOSITE_DIR - topology.yaml: added system.sips.topology - ccl.yaml: single intercube_allreduce algorithm - benches/ccl_allreduce.py: row_wise cube-mesh tensor layout Removed old flat-ring algorithms and their tests. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-04-16 17:33:42 -07:00