Re:Performance variation in ‘identical’ processors
by mlyle on Monday January 06, 2020 @05:25PM
(#21974155)
Just further lols for you to consider-- the data shows a large difference with the processors in slot 0 being significantly slower than the processors in slot 1. Clearly silicon variation /s.
> Third, the median processor performance (shown by
the green, blue and red lines) between processor 0 and processor 1
on Sandy Bridge show up to 1% difference. However, that difference
in median processor performance increases to up to 5% on Broadwell
This socket 1 vs socket 2 variability alone explains 1/3rd of the magnitude of the difference measured in the study-- which makes it quite clear we're not just measuring silicon variability.
> Third, the median processor performance (shown by the green, blue and red lines) between processor 0 and processor 1 on Sandy Bridge show up to 1% difference. However, that difference in median processor performance increases to up to 5% on Broadwell
This socket 1 vs socket 2 variability alone explains 1/3rd of the magnitude of the difference measured in the study-- which makes it quite clear we're not just measuring silicon variability.