lsst-dm_stack_demo has obsolete benchmark files (circa Release 7.0) which fail to serve the purpose of validating, for the user, the correct functioning of a freshly built Release v8.0 stack.
At the very least, the benchmark files should be regenerated for each official Release.
(1) Build the benchmark files for Release v8.0
(2) Debate (a) recommending the use of 'numdiff' to check if the output is within realistic bounds. Or, (b) develop another procedure to better show how the current algorithms compare to the algorithms used at the benchmarked Release.
(3) Depending on result of the debate on #2: for: (a) provide appropriate 'numdiff' command invocation in manual.; for (b) implement the new procedure.