triton-ascend-case-reduction-amax-medium

triton-ascend-case-reduction-amax-medium is a skill for Claude Code, Codex from mindspore-ai/akg. It costs 81 tokens per session (512 once invoked), scanned A, original, Apache-2.0.

An optimization guide for Triton kernels that compute the maximum value across one dimension of a medium-sized 2D array on an Ascend processor.

In plain words
What is it for?
Use it when the reduced dimension has tens of millions of elements and the other dimension is moderate. It covers reorganizing the calculation and setting the grid size.
Why use it?
It reduces repeated maximum calculations inside a loop and helps choose a work layout that uses the processor's cores efficiently.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it when the reduced dimension has tens of millions of elements and the other dimension is moderate. It covers reorganizing the calculation and setting the grid size.

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Install with agentmods
npx agentmods add skills/mindspore-ai/akg/triton-ascend-case-reduction-amax-medium
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add mindspore-ai/akg --skill triton-ascend-case-reduction-amax-medium
Clone the repo
git clone --depth 1 https://github.com/mindspore-ai/akg

Made for: Claude Code, Codex.

Wrote this? Show the measurements

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README.md
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Per session 81 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 512 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00081 $0.00512
Opus 5 $0.00041 $0.00256
Sonnet 5 $0.00016 $0.00102
Haiku 4.5 $0.00008 $0.00051

Measured 12d ago against content hash 3f582d4d7c3c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

triton-ascend-case-reduction-amax-medium scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

akg_agents/python/akg_agents/op/resources/skills/triton-ascend/cases/triton-ascend-case-reduction-amax-medium/SKILL.md · 50 lines

What it actually says

中等规模 Amax 归约优化

任务特征

  • 数据尺寸:(2048, 8192),非reduce轴中等,reduce轴较大

优化 1:计算重组

# 错误:简单方式:循环内多次归约
row_max = -float('inf')
for n_offset in range(0, N, BLOCK_SIZE):
    curr_max = tl.max(data_block, 1)
    row_max = tl.maximum(curr_max, row_max)

# 正确:优化方式:维护矩阵结构,循环外归约
curr_max = tl.full((BLOCK_SIZE_M, BLOCK_SIZE_N), -float('inf'), dtype=tl.float32)
for n_start in range(0, N, BLOCK_SIZE_N):
    curr_max = tl.maximum(data_block, curr_max)
row_max = tl.max(curr_max, 1)

优化 2:Grid 配置

# (AI core=40)
# 1. grid=32<40, UB用满 -> 29.05 us
triton.Config({'BLOCK_SIZE_M': 64, 'BLOCK_SIZE_N': 256})

# 2. grid>40, UB用满 -> 29.09 us
triton.Config({'BLOCK_SIZE_M': 32, 'BLOCK_SIZE_N': 512})

# 3. grid=40, UB不超出 -> 25.73 us 最优
triton.Config({'BLOCK_SIZE_M': 52, 'BLOCK_SIZE_N': 256})

总结

  1. 计算重组:将多次归约合并为一次,减少归约次数
  2. Grid配置:grid等于核数时性能最优,需确保UB不超出
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 50 lines · 81 tokens per session scan A 3f582d4d7c3c

Subscribe to this mod's changes

triton-ascend-case-reduction-amax-medium is a skill published in the GitHub repository mindspore-ai/akg (259 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 81 tokens to every session and 512 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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