Simulation Failure Triage

Goal

Classify common simulation failure signatures and return immediate actions, retry ladders, and stop conditions.

Requirements

• Python 3.10+
• No external dependencies
• Works on Linux, macOS, and Windows

Inputs to Gather

Decision Guidance

• First preserve evidence: logs, inputs, executable version, and scheduler output.
• Separate setup errors from numerical instability and physical model issues.
• Retry with a single controlled change.
• Stop retrying when the result becomes scientifically meaningless or a required model input is missing.

Script Outputs

scripts/failure_triage.py emits:

• likely_causes
• immediate_actions
• retry_ladder
• stop_conditions
• evidence

Workflow

python3 skills/robustness/simulation-failure-triage/scripts/failure_triage.py \
  --code LAMMPS \
  --stage runtime \
  --symptoms nan,pressure-blowup \
  --recent-change "increased timestep" \
  --json

Error Handling

Invalid stages or oversized log files stop with exit code 2. Unknown symptoms are retained as custom evidence.

Limitations

This skill gives first-response triage. It does not guarantee that a failed simulation can be repaired.

Security

• Log files are read with a 10 MB size cap.
• Log text is truncated and never executed.
• The script does not run external solvers.
• The skill uses Bash only to run its bundled script.

References

• See references/failure_patterns.md for common failure signatures and retry ladders.

Version History

• 1.0.0: Initial cross-code simulation failure triage skill.