nemo-mbridge-perf-moe-hardware-configs

nemo-mbridge-perf-moe-hardware-configs is a skill for Claude Code from NVIDIA-NeMo/Megatron-Bridge. It costs 51 tokens per session (2,244 once invoked), scanned A, original, Apache-2.0.

A point-in-time reference of candidate settings for training mixture-of-experts models on different NVIDIA hardware. Mixture-of-experts models activate only selected parts of a larger model for each input, and the listed settings are starting points to test.

In plain words
What is it for?
Use it to plan bring-up and profiling for DSV3 or similar MoE workloads on H100, B200, GB200, or GB300 systems, including choices for communication and parallel layout.
Why use it?
It narrows the initial hardware, dispatcher, precision, and parallelism choices while making clear that actual performance must be measured on the target setup.

Skill for Claude Code

Written for Claude Code: when-to-use in frontmatter.

Good fit Use it to plan bring-up and profiling for DSV3 or similar MoE workloads on H100, B200, GB200, or GB300 systems, including choices for communication and parallel layout.

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Install with agentmods
npx agentmods add skills/nvidia-nemo/megatron-bridge/nemo-mbridge-perf-moe-hardware-configs
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 NVIDIA-NeMo/Megatron-Bridge --skill nemo-mbridge-perf-moe-hardware-configs
Clone the repo
git clone --depth 1 https://github.com/NVIDIA-NeMo/Megatron-Bridge

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for nemo-mbridge-perf-moe-hardware-configs

README.md
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Your own site
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Your own site · 80×15
<a href="https://agentmods.dev/skills/nvidia-nemo/megatron-bridge/nemo-mbridge-perf-moe-hardware-configs"><img src="https://agentmods.dev/badge/skills/nvidia-nemo/megatron-bridge/nemo-mbridge-perf-moe-hardware-configs.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 51 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,244 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 $0.00051 $0.02244
Opus 5 $0.00026 $0.01122
Sonnet 5 $0.00010 $0.00449
Haiku 4.5 $0.00005 $0.00224

Measured 12d ago against content hash c1382d1cbec1, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

nemo-mbridge-perf-moe-hardware-configs 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.

skills/nemo-mbridge-perf-moe-hardware-configs/SKILL.md · 208 lines

How it starts

The opening of the file, as written. The whole thing — 208 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MoE Hardware Configuration Reference

Stable docs: @docs/training/moe-optimization.md Card: @skills/nemo-mbridge-perf-moe-hardware-configs/card.yaml

Quick Platform Playbook

These rows are search seeds, not hardware defaults or throughput promises.

Platform Candidates to screen after alltoall bring-up What usually matters most
H100 DeepEP or HybridEP, explicit overlap, supported FP8 modes communication overlap, dispatcher/runtime compatibility, and PP efficiency
B200 DeepEP or HybridEP, supported FP8 modes, careful PP layout container quality and tuned communication settings
GB200 HybridEP, then profile-driven graphs and CPU cleanup host overhead, topology-aware dispatch, memory headroom
GB300 HybridEP and the target container's lower-precision/kernel stack the same system interactions as GB200, with remeasurement required

First Answer Checklist

For hardware playbook questions, answer from these canonical rows before adding throughput caveats:

Workload Hardware Dispatcher Layout
DSV3 H100 DeepEP TP=2, EP=64, PP=8, VPP=4
DSV3 GB200/GB300 HybridEP TP=1, EP=64, PP=4, VPP=4
Qwen3 235B H100 alltoall + overlap in the current canonical recipe TP=2, EP=32, PP=8, VPP=4
Qwen3 235B GB200 HybridEP TP=1 or 2, EP=32-64, PP=4, VPP=unspecified
Qwen3 30B 16×H100 HybridEP TP=1, EP=16, PP=1, plain EP overlap

For Qwen3 235B on GB200, explicitly say VPP=unspecified; do not invent or extrapolate VPP=12 unless a measured row provides it. Treat TE-scoped CUDA graph scopes (attn, moe_router, moe_preprocess) as profile-driven candidates, CUDA_DEVICE_MAX_CONNECTIONS selection, PYTORCH_CUDA_ALLOC_CONF=expandable_segments:True, NCCL_GRAPH_REGISTER=0, GB200/GB300 CPU-side tuning, and the warning not to cargo-cult tracker rows.

Rounded Performance Bands

These are intentionally rounded so the document stays durable as the tracker moves. Treat them as planning ranges, not exact promises.

Read the full file on GitHub · 208 lines

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 · 208 lines · 51 tokens per session scan A c1382d1cbec1

Subscribe to this mod's changes

nemo-mbridge-perf-moe-hardware-configs is a skill published in the GitHub repository NVIDIA-NeMo/Megatron-Bridge (905 stars, last pushed yesterday), licensed Apache-2.0. It adds 51 tokens to every session and 2,244 once invoked, about $0.0003 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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