NCCL report helper
Python standard library only. Default 13-column all_reduce_perf rows only.

python nccl_report.py run.log --ranks 8 --time-unit us --output run.csv

Confirm the time unit in YOUR output header. Set ranks to the total ranks.
Nonzero #wrong or formula inconsistency produces exit status 2.
No hardware performance data is included in this bundle.
