hyperpod-performance-debugger
SkillDiagnose performance issues on Amazon SageMaker HyperPod clusters — uneven NCCL bandwidth across nodes and poor filesystem throughput. Read-only. Surfaces host-side signals (Xid, ECC, NVLink, EFA reachability, FSx saturation) and routes to the appropriate sibling skill (hyperpod-node-debugger, hyper
Install
git clone https://github.com/awslabs/agent-plugins.git ~/.claude/skills/hyperpod-performance-debuggerWhat is hyperpod-performance-debugger?
Diagnose performance issues on Amazon SageMaker HyperPod clusters — uneven NCCL bandwidth across nodes and poor filesystem throughput. Read-only. Surfaces host-side signals (Xid, ECC, NVLink, EFA reachability, FSx saturation) and routes to the appropriate sibling skill (hyperpod-node-debugger, hyperpod-nccl, hyperpod-version-checker, hyperpod-issue-report) for any remediation. Triggers on uneven NCCL across nodes, straggler node, FSx slow, checkpoint slow, dataloader slow, filesystem bottleneck, FSx throughput, cross-AZ latency, topology mismatch.
What this can do
Capabilities declared in this component's own frontmatter — not inferred.
Inherit all session tools
Declares no tool restrictions — inherits every session tool
~138 tokens of context used while enabled, before you invoke anything
Documentation
README · ~8 min readHyperPod Performance Debugger
- Uneven NCCL performance across nodes — workload faster on some node sets than others, pairwise bandwidth variance, suspected straggler.
- Poor filesystem performance — training stalled on data loading, checkpoint save/load dominating step time, FSx throughput saturated.
Scope and delegation
Route findings outside the two in-scope scenarios to the owner skill below.
| Concern observed | Route to |
|---|---|
| GPU hardware fault, ECC, NVLink, Xid, DCGM diagnostics, drain/replace | hyperpod-node-debugger (§ F Hardware/Auto-Repair, § G GPU) |
Cannot allocate memory at os.fork(), root volume exhausted | hyperpod-node-debugger (§ I Resource Exhaustion) |
| NCCL timeouts, hangs, AllReduce stalls, EFA TCP fallback, RDMA memlock | hyperpod-nccl |
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