Build an Accelerator Interconnect Diagnosis and Packet Loss Reviewer

Analyze multi-GPU node interconnect counters and fabric error flags. Isolate degraded PCIe and NVLink links causing distributed all-reduce slowdowns and propose hardware repair actions.

Cluster Network Engineer

Ingest normalized interconnect counter logs, CRC error rates, and replay counts.

Correlate interconnect packet drops with collective all-reduce latency degradation.

Prompt hosted Claude to inspect fabric topology anomalies and pinpoint failing lanes.

Synthesize a hardware maintenance ticket with port isolation and replacement guidance.

Network topology graph visualizer highlighting degraded links with click-to-generate repair tickets.

Construct synthetic interconnect telemetry tables recording link CRC errors, replay events, and NVLink/PCIe port states across 8-GPU nodes. Starter examples below are synthetic. They are not downloaded records.

NVIDIA DCGM exporter Extracts DCGM NVLink error metrics, replay counters, and bandwidth saturation indicators from the DCGM exporter counters.

anthropic-claude, pydantic-ai. Interprets multi-hop interconnect error patterns and drafts clear, actionable physical maintenance steps. Hosted Claude API for topological reasoning and maintenance ticket drafting. No access to proprietary cloud network routing.

Submit runnable source, pinned dependencies, setup commands, a working interface, example outputs, and a recorded end-to-end demo. Include tests and an action log.

Identifies failing interconnect links based on replay threshold exceedance (>1000/hr).

Correlates link errors with distributed collective step latency degradation.

Outputs structured repair tickets specifying switch port, GPU index, and replacement part.

```json [ { "input": { "node_id": "hpc-gpu-node-12", "fabric_errors": [ { "gpu_src": 2, "gpu_dst": 3, "link_id": "nvlink-1", "crc_errors": 45120, "replay_count": 8900 }, { "gpu_src": 0, "gpu_dst": 1, "link_id": "nvlink-0", "crc_errors": 0, "replay_count": 0 } ], "step_time_ms": 340.5, "baseline_step_time_ms": 180 }, "expected_output": { "fault_detected": true, "isolated_component": "GPU 2 -> GPU 3 NVLink 1", "degradation_pct": 89.2, "repair_action": "Reseat high-speed mezzanine interconnect or replace interposer ribbon cable on slot 2-3", "ticket_priority": "urgent" } }, { "input": { "node_id": "hpc-gpu-node-03", "fabric_errors": [ { "gpu_src": 0, "gpu_dst": 1, "link_id": "nvlink-0", "crc_errors": 2, "replay_count": 1 } ], "step_time_ms": 181.2, "baseline_step_time_ms": 180 }, "expected_output": { "fault_detected": false, "isolated_component": "None", "degradation_pct": 0.6, "repair_action": "Maintain routine monitoring; error rate within allowable transient threshold", "ticket_priority": "low" } } ] ```

Diagnostic analysis only; does not reset physical PCIe registers or disable cluster switch fabrics. Use mock external writes. Require human review before any real deployment.