News for hackers. Stuff that matters.

A comment on AMD EPYC Performance Testing with systemd. Parent comment

Re:AMD EPYC Performance Testing with systemd by tankenmate on Thursday July 12, 2018 @05:33PM (#17518804)
You don't have to run with 4 DIMMs but you'll run slower if you do; it's kinda like having a one lane road vs a 4 lane road, you can put all your traffic through one lane, but it's a whole lot slower than using four lanes.
[ Parent | on HN ]
Re:AMD EPYC Performance Testing with systemd by NullPrefix on Thursday July 12, 2018 @06:57PM (#17519311)
That was not the point I was arguing with. Let me qoute.

>AMD should have just not made TR work in this case

Where "this case" is <4 dimms.

[ Parent | on HN ]
Re:AMD EPYC Performance Testing with systemd by EvangelicalPig on Friday July 13, 2018 @11:05AM (#17523514)
Does the equivalent Intel platform suffer to the same degree of performance degradation when not using all 4 memory channels?
[ Parent | on HN ]
Re:AMD EPYC Performance Testing with systemd by tankenmate on Friday July 13, 2018 @01:04PM (#17524686)
For the most part yes, the only sizeable difference is the caching/NUMA strategies and implementation between the two platforms (L3 <=> DRAM controller(s), and interconnects if necessary).
[ Parent | on HN ]