IX2-0303

① SA Source

Context Before

AMD has launched a new inference engine called ATOM. Atom can deliver slightly better single node performance, but it is completely lacking on a lot of features that makes it unusable for real workloads. One such example is that it does not support NVMe or CPU KVCache offloading, tool parsing, wide expert parallelism, or disaggregated serving. This has led to zero customers using it in production. Unlike Nvidia’s TRTLLM which generates billions of tokens per hour globally at companies like TogetherAI, etc and does support tool parsing and other features , there are no token factories currently using ATOM due to the lack of the aforementioned features.

Furthermore, maintainers of open-source inference engines like vLLM are disappointed in AMD due to a lack of engineering and GPU resources provided by AMD. For example, Simon Mo, lead vLLM maintainer, states in this GitHub RFC that there is still no working MI355X that he can add to vLLM CI, hence the poor user experience. There are currently zero Mi355X tests on vLLM, while NVIDIA’s B200 has many tests on vLLM. Similarly, there are still not enough MI300X CI machines on vLLM. Upstream vLLM needs at least 20 more MI300 machines, 20 more MI325 machines and 20 more MI355X machines to reach the same level of usability as CUDA.

Evidence

We at SemiAnalysis have been trying to get AMD to contribute more compute to vLLM and have had some success on that within the couple weeks

Context After

Moreover, the vLLM maintainers say that they cannot support day 0 vLLM support for ROCm due to this issue of lack of machine resources. This huge disparity in time to market continues to lead to ROCm lagging behind and leaving a huge opening for Nvidia to continue to charge an insane 75% gross margin (4x markup on cost of goods).

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② Atomic Claim

SemiAnalysis 一直推動 AMDvLLM 提供更多算力,最近幾週已取得一些進展。

  • Epistemic Mode: ASSERTED
  • Mapping Status: COMPLETE

③ Semantic Frame

{
  "additional_nodes": [],
  "frame_type": "RELATION",
  "object": {
    "id": "04_knowledge_base/vLLM",
    "label": "vLLM"
  },
  "predicate": "PROVIDES",
  "qualifiers": {
    "condition_text": null,
    "numeric_mentions": [],
    "temporal_mentions": []
  },
  "subject": {
    "id": "02_companies/AMD",
    "label": "AMD"
  }
}

④ Canonical Entity Mapping

RoleSurface LabelCanonical Target
subjectAMDAMD
objectvLLMvLLM

⑤ Human Review

請在 Properties 逐項確認:

  • 原文 → Atomic Claim 是否忠實
  • Atomic Claim → Semantic Frame 是否忠實
  • Canonical Entity mapping 是否正確
  • Epistemic mode 是否保留原文語氣
  • 最後選擇 review_action

Review state

Markdown 內文不是正式 approval。只有 Apply bridge 寫入的 Decision Ledger event 才是正式決策。