project_6 e36da2efa9 [docs+code] lookback delay is a no-op on BI-V100 + V2 compound reduce pattern ...

Two findings from reading CCCL source code:

1. single_pass_scan_operators.cuh: delay() has GridThreshold=500 gate.
   BI-V100 scan launches ~12 blocks (100K elements / tile_size).
   12 < 500, so ALL delay policies collapse to __threadfence_block().
   Conclusion: delay_ns, delay_l2w, delay_algorithm are IRRELEVANT
   on BI-V100. Only threads/items/load/scan algorithms matter.

2. summary_statistics.cu compound reduce pattern maps directly to
   paged_attention V2's cross-partition reduce. Updated muh_kernel_map.py
   with the structural mapping and the V2 dispatch bug (use_v1=True
   hardcoded in paged_attn.py line 99).

Source: cccl_upstream/cub/cub/agent/single_pass_scan_operators.cuh
        cccl_upstream/thrust/examples/summary_statistics.cu

2026-08-05 03:35:07 +00:00

..

server_recon

docs: document Qwen3.6-35B-A3B bootstrap failure and architecture analysis

2026-08-01 13:16:01 +00:00

CCCL_REDUCE_ARCHITECTURE_NOTES.md

[docs+code] lookback delay is a no-op on BI-V100 + V2 compound reduce pattern

2026-08-05 03:35:07 +00:00

CCCL_TO_TRITON_METHODOLOGY.md

docs: CCCL → Triton methodology transfer — parameter search translation table

2026-08-03 04:37:23 +00:00

paged_attention_kernel_architecture.md

[ARCH] CCCL-derived paged attention kernel architecture + Triton rewrite

2026-07-31 04:13:07 +00:00

SPECIALIZATION_ANALYSIS.md

[muh] kernel_map: full vllm→CCCL mapping with SMEM overflow detection

2026-07-31 11:13:33 +00:00