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Author	SHA1	Message	Date
dylanyunlon	68d500c960	test: add scan tuning verification — union SMEM model from agent_scan.cuh Tests scan SMEM safety (7/7 pass), delay parameter scaling from SM100, and tile size comparison. Key insight: agent_scan.cuh _TempStorage is a UNION — BlockLoad, BlockStore, BlockScan share SMEM. Peak = max(tile, scan_scratch), NOT tile + scan_scratch. 8B structs at 99% SMEM utilization (48640/49152) are valid under union model. Initial test had false SMEM overflow alarm (used sum model).	2026-08-07 03:16:44 +00:00
dylanyunlon	9605415404	test: add reduce tuning verification against CCCL ground truth Tests scale_mem_bound CCCL parity (8/8), register pressure for all 14 bi100_* structs, summary_statistics.cu 28-byte AccumT safety, and vectorization alignment. All pass. Key finding: BI-V100 float32 tile is 1.5x SM100's (12288 vs 8192) because 16 SMs need larger tiles to compensate for fewer CTAs. float64 tile is 0.6x SM100's (6144 vs 10240) because threads=640 was reduced to 384 (clean warp count) and vec=2 added.	2026-08-07 03:13:24 +00:00
dylanyunlon	79730ea907	test: add SMEM safety validator for all 26 tuning algorithms 191 combinations tested: algorithm × type_size × (key,value) pairs. Verifies every policy_selector output satisfies tile ≤ 49152 bytes. Exit code 0 = all safe, 1 = overflow detected. Usage: python3 muh/tests/test_smem_safety.py [--verbose]	2026-08-01 12:37:14 +08:00

Author

SHA1

Message

Date

dylanyunlon

68d500c960

test: add scan tuning verification — union SMEM model from agent_scan.cuh

Tests scan SMEM safety (7/7 pass), delay parameter scaling from SM100,
and tile size comparison. Key insight: agent_scan.cuh _TempStorage is
a UNION — BlockLoad, BlockStore, BlockScan share SMEM. Peak = max(tile,
scan_scratch), NOT tile + scan_scratch.

8B structs at 99% SMEM utilization (48640/49152) are valid under union model.
Initial test had false SMEM overflow alarm (used sum model).

2026-08-07 03:16:44 +00:00

dylanyunlon

9605415404

test: add reduce tuning verification against CCCL ground truth

Tests scale_mem_bound CCCL parity (8/8), register pressure for all
14 bi100_* structs, summary_statistics.cu 28-byte AccumT safety,
and vectorization alignment. All pass.

Key finding: BI-V100 float32 tile is 1.5x SM100's (12288 vs 8192)
because 16 SMs need larger tiles to compensate for fewer CTAs.
float64 tile is 0.6x SM100's (6144 vs 10240) because threads=640
was reduced to 384 (clean warp count) and vec=2 added.

2026-08-07 03:13:24 +00:00

dylanyunlon

79730ea907

test: add SMEM safety validator for all 26 tuning algorithms

191 combinations tested: algorithm × type_size × (key,value) pairs.
Verifies every policy_selector output satisfies tile ≤ 49152 bytes.
Exit code 0 = all safe, 1 = overflow detected.

Usage: python3 muh/tests/test_smem_safety.py [--verbose]

2026-08-01 12:37:14 +08:00

3 Commits