[HN Gopher] Hetzner's New AX102 Dedicated Server with AMD Ryzen ...
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       Hetzner's New AX102 Dedicated Server with AMD Ryzen 9 7950X3D
        
       Author : mfiguiere
       Score  : 17 points
       Date   : 2023-04-21 16:41 UTC (6 hours ago)
        
 (HTM) web link (www.hetzner.com)
 (TXT) w3m dump (www.hetzner.com)
        
       | mfiguiere wrote:
       | Phoronix has a nice set of Linux benchmarks with this CPU.
       | https://www.phoronix.com/review/amd-ryzen9-7950x3d-linux
        
       | wmf wrote:
       | This processor is terrible for servers because of the asymmetric
       | design.
        
         | sudosysgen wrote:
         | Not really. If you're going for performance, you're going to be
         | using NUMA aware code, and your compute is going to stay on a
         | single CCD (if you set up your NUMA domain correctly). Then
         | it's up to you to decide if you benefit more from cache or
         | frequency.
         | 
         | EDIT: AMD CPUs with nonuniform cache (such as this one), with
         | the right motherboard, support L3 as NUMA, which means that
         | each CCX is exposed as a NUMA domain.
        
           | dragontamer wrote:
           | I don't think the 7950x is NUMA?
           | 
           | But I don't have such a system, nor have I played with the
           | BIOS settings of that chip. But it only has one memory
           | controller, so I doubt there's a NUMA setting. Correct me if
           | I'm wrong of course.
        
             | wmf wrote:
             | Epyc has a NUMA node per CCX mode but I don't know if Ryzen
             | "BIOS" includes any NUMA support. That also doesn't help if
             | you're running a uniform workload.
        
         | Arrath wrote:
         | It seems poorly suited to a lot of workloads absent some
         | scheduler improvements. Take the work-around for gaming: park
         | the CCD without the 3d cache. Well at that point why not just
         | use a 7800x3d?
        
           | dragontamer wrote:
           | Park the processes that need the cache on the cache cores.
           | 
           | Park the processes that don't need it on the smaller-cores.
           | 
           | https://man7.org/linux/man-pages/man1/taskset.1.html
           | 
           | These commands exist in both Linux and Windows for a reason.
        
         | dragontamer wrote:
         | Surely this is a problem that can be fixed with a bit of Thread
         | Affinity?
        
           | wmf wrote:
           | Many servers only run one type of workload. Do you want to
           | just use half the cores? That's not cost effective.
        
       | piperswe wrote:
       | Wow, that's a fantastic price if you have a workload that can
       | take advantage of the processor's architecture
        
       | rektide wrote:
       | $141 for 128GB ram + 2x 2TB NVMe SSD, and a very fine 16 core
       | chip with gobs of cache. This is a pretty solid offering. If you
       | get a 1 year up front price reserve instance (lot of caveats
       | there), a aws m5ad.2xlarge is $176/mo. 32GiB, 8vCPU, and a 300GB
       | NVMe ssd on a 2019 era Epyc. That's the best offer I could find
       | from AWS for something near that price point. Having 4x the RAM,
       | way more SSD space, and 2x the cores, on a dedicated machine
       | sounds great. And it makes sense as an offering, is a reasonable
       | offer, attainable.
       | 
       | Hopefully these come to more than the 1 data-center! :) Hopefully
       | we see more competitors offering great stuff like this. Wild that
       | this easily a sub $2000 box, $700 cpu, $200 ram, couple hundred
       | for ssd and mobo and case.
        
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       (page generated 2023-04-21 23:01 UTC)