BFB comparison tests for pace

[fmalatino]

Is your feature request related to a problem? Please describe.
A bit for bit (BFB) comparison test needed to ensure incoming changes do not effect reproduciblity of output during runs.

Describe the solution you'd like
An regression test using cprnc for BFB comparison of output from a run before and after changes to be merged.

[xyuan]

yeah, I vote for it, this bfb labels help us to trace pr issues in the future