Alizaidy/bf16 gemm tuning 081426

[azaidy]

GEMM A16W16 tuned kernel time (µs)

N	K	Shapes	Min	Max	Geomean
64	7168	12	4.61x	12.68x	7.79x
384	7168	14	5.16x	14.22x	8.84x
512	7168	14	5.09x	14.25x	8.69x
1024	7168	15	4.18x	14.11x	8.50x
2048	7168	15	4.29x	16.25x	8.43x
32320	7168	15	2.82x	15.58x	5.90x

[github-actions]

🏷️ CI Guide

Runs automatically on every PR:

• ✅ Pre-checks (submodule verification, code formatting)
• ✅ Aiter op tests (gfx942 + gfx950)
• ✅ Triton tests on MI35X (only when aiter/ops/triton/** or related paths are changed)

Extended tests (opt-in via labels):

Label	Tests
ci:gfx1250-ffm-triton	Run the five-shard gfx1250 FFM Triton test suite
ci:triton-300x	Run an additional Triton test job on MI300X in PRs; main branch always runs both MI35X and MI300X
ci:sglang	SGLang integration tests: DeepSeek-R1-MXFP4 accuracy, Qwen 3.5 accuracy
ci:atom	ATOM benchmark: DeepSeek-R1-0528, GPT-OSS-120B
ci:atom_full	ATOM accuracy suite for PR and main models from ATOM models_accuracy.json
ci:vllm	vLLM benchmark: GPT-OSS-120B, DeepSeek-R1-0528, Kimi-K2.5
ci:all	All standard extended tests (excludes ci:atom_full)

Only add ci:atom_full for FlyDSL or Triton upgrades.
Add labels via the sidebar or gh pr edit 4749 --add-label <label>