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1)
Message boards :
Number crunching :
Top participants RAC
(Message 70731)
Posted 16 days ago by TR UNESCO Global Geopark Post: It'd be nice to see a correction applied here. |
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2)
Message boards :
Number crunching :
5800x3d Performance
(Message 68125)
Posted 30 Jan 2023 by TR UNESCO Global Geopark Post: Having run a decent number of them I can confirm OpenIFS models do not benefit from the 3d cache in any meaningful way :) |
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3)
Message boards :
Number crunching :
Hardware for new models.
(Message 67371)
Posted 5 Jan 2023 by TR UNESCO Global Geopark Post: LOVE Noctua coolers. 5700x is a very underrated chip.. overclocks like a boss if you decide to go the other way and run it hot :) ITX seems entirely appropriate for chips under 100w.. I love/hate em for assembly. Seems like mATX is getting less common though. |
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4)
Message boards :
Number crunching :
5800x3d Performance
(Message 65552)
Posted 13 Jun 2022 by TR UNESCO Global Geopark Post: With how cheap 5900x's have become I had a funny feeling it wouldn't be good value but I had to try.. For Science! :) |
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5)
Message boards :
Number crunching :
5800x3d Performance
(Message 65549)
Posted 13 Jun 2022 by TR UNESCO Global Geopark Post: With the latest batch of work units we've been able to give the 5800x3d a workout. Was hoping the huge L3 Cache would make a big difference but performance is similar to other Ryzens. With same ram and same # of workunits running concurrently the 5800x3d is outperforming a 3900x by 15%. I think a lot of that can be attributed to the 5th generation improvements as much as to the cache. The chip is very efficient but I suspect the 5700x or 5900x are better bang for buck (quite the premium for the x3d). Anyways thought everyone ought to know :) |
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6)
Message boards :
Number crunching :
Little work, yet the most "important" thing in the world?
(Message 63745)
Posted 30 Mar 2021 by TR UNESCO Global Geopark Post: I've got a 3900 chewing on this project too. This article is relevant to this topic: https://insideclimatenews.org/news/06122019/climate-models-supercomputer-world-research-program-agu-100-anniversary-cheyenne-wyoming/ |
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7)
Message boards :
Number crunching :
New work Discussion
(Message 61317)
Posted 21 Oct 2019 by TR UNESCO Global Geopark Post: I've shifted a few of my PCs to Linux but I'm not getting any downloads. Anyone have any tips? Ty geophi! I've installed these.. we'll see if the scheduler likes me now :) Edit: I have work to do now. Formatted my ubuntu (19.04) install as the library install was fighting back. I like mint better anyway! |
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8)
Message boards :
Number crunching :
New work Discussion
(Message 61315)
Posted 21 Oct 2019 by TR UNESCO Global Geopark Post: I've shifted a few of my PCs to Linux but I'm not getting any downloads. Anyone have any tips? |
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9)
Message boards :
Cafe CPDN :
the say hello thread :)
(Message 60969)
Posted 23 Sep 2019 by TR UNESCO Global Geopark Post: Hello from our remote corner of northern BC! |
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10)
Message boards :
Number crunching :
About the new many core computers
(Message 59933)
Posted 8 Apr 2019 by TR UNESCO Global Geopark Post: Geophi raises a very good point. After reviewing data I'm sad to report my Ryzen SMT tests were all done on large PNW25 models. I hope I can evaluate some smaller models soon. I hope to test the 3rd gen Ryzen when it releases - the 2nd gen seem like a strong evolution and the 3rd's die shrink should provide good efficiency. |
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11)
Message boards :
Number crunching :
About the new many core computers
(Message 59920)
Posted 4 Apr 2019 by TR UNESCO Global Geopark Post: This is certainly true on an 8core 16thread Ryzen - I've tested it with many configurations and the very best is to run only 8 tasks and get the DDR4 memory clock as high as possible (performance scaled linearly up with memory clocks) CPU clock speed had less effect. I also leave SMT on but found no significant difference with it off. After about a month of testing I calculated that running 8 tasks instead of 16 on my 1st gen Ryzen resulted in about 6% more productivity overall. The hyperthreaded intel (ivy bridge) systems I run did better at running all threads (8) - effectively they did the same amount of work either way. |
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12)
Message boards :
Number crunching :
Ryzen Performance
(Message 58837)
Posted 7 Oct 2018 by TR UNESCO Global Geopark Post: I have to agree with you Evans. I've now done a little experimenting with cpu clocks and memory clocks on my Ryzen 1700x Work done scaled linearly at 1:1 as memory clocks went up. CPU clocks saw some gains but nothing like the memory clocks. I've got mine running at 2933mhz w/mediocre timings and I'm currently the #5 host. 3 of the top 10 hosts are Ryzen 7 1st gens... CPDN certainly works great on Ryzen. I'd love to see what a 2nd gen Ryzen w/really fast RAM could produce. |
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13)
Message boards :
Number crunching :
Ryzen Performance
(Message 58610)
Posted 16 Aug 2018 by TR UNESCO Global Geopark Post: Windows 10 on my Ryzen.. there are plenty of benchmarks out there to prove the windows scheduler holds them back a bit. I've got a Haswell on win10 as well.. does more per core but it's also at 4.2ghz Be a while before I report on my next round of Ryzen tests. Anyone else tested the impact of DDR4 speed or SMT? |
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14)
Message boards :
Number crunching :
Ryzen Performance
(Message 58608)
Posted 15 Aug 2018 by TR UNESCO Global Geopark Post: Haven't seen much discussion on project configuration on Ryzen. Did a little benchmarking recently. Stock speed 1700x (8 core 16 thread) DDR4 running at 2133 dual channel and SMT on. Running 16 workunits produces ~67% of the work that running 8 does. I suspect running 16 properly is handicapped by memory bandwidth. I'll do some more testing with SMT off as well as Ram running at a more modern speed |
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