Re:Performance variation in ‘identical’ processors
by mlyle on Monday January 06, 2020 @01:27PM
(#21971599)
LOL. Maybe have a coffee or find another way to chill out.
The paper itself is pretty clear with the methodology: the throughput of each processor was measured in an installed supercomputing cluster. There are obviously sources of variation in processor performance in a supercomputing cluster beyond the actual silicon plugged into the socket. The experiment has no ability to control for this variation, and no attempt was made.
The reason why we have research and research papers is so we can read about the methodology and think about the limitations of what is measured. It's an interesting measurement that the researchers made in situ; but it also has obvious limitations.
The paper itself is pretty clear with the methodology: the throughput of each processor was measured in an installed supercomputing cluster. There are obviously sources of variation in processor performance in a supercomputing cluster beyond the actual silicon plugged into the socket. The experiment has no ability to control for this variation, and no attempt was made.
The reason why we have research and research papers is so we can read about the methodology and think about the limitations of what is measured. It's an interesting measurement that the researchers made in situ; but it also has obvious limitations.