[Info-vax] VUPS.COM relevance for modern CPUs

[chris]

On 12/20/22 15:50, abrsvc wrote:
>> None of this makes much sense. spec.org have been devising cpu tests
>> for decades and have specialist tests for different workloads. That
>> includes all the info on compilers and code used. Probably the most
>> accurate data around and is supported by system and cpu vendors as
>> well. Too many variables involved, so some sort of level playing
>> field approach is the only way to get accuracy.
>>
>> Can be fun devising simple tests, but would never used that as a
>> basis for purchasing decisions...
>>
>> Chris
> 
> The big problem with these standard benchmarks is that some compilers will look for these and insert some "special" optimizations specifically for those benchmarks. You are better served using a homegrown benchmark of some type that more closely reflects your application environment.
> 
> Dan

All the conditions are published, including compiler flags,
which compiler and more. Must be more accurate than a home
grown ad hoc test which ignores so many variables that could
influence the results.

If you want to measure something, use the best and most
accurate tools available...

Chris