Ryzen and Threadripper

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Message 2002297 - Posted: 12 Jul 2019, 21:12:50 UTC - in response to Message 2002273.  

You may have a point. I found https://www.pcworld.com/article/3408756/6-gpus-you-absolutely-should-not-buy-right-now.html

Onto the cards you shouldn’t buy unless you find them at spectacular discounts:

$350 GeForce RTX 2060 (non-Super)
$400 Radeon Vega 56
$500 Radeon Vega 64
$500 GeForce RTX 2070 (non-Super)
$700 GeForce RTX 2080 (non-Super)
$700 Radeon RX VII

Jord

According to Giorgo of the Ancient Astronaut Theorists I do not help with tech questions via private message. He's right: please use the forums for that.
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Message 2002301 - Posted: 12 Jul 2019, 21:31:49 UTC - in response to Message 2002297.  

You may have a point. I found https://www.pcworld.com/article/3408756/6-gpus-you-absolutely-should-not-buy-right-now.html

Onto the cards you shouldn’t buy unless you find them at spectacular discounts:

$350 GeForce RTX 2060 (non-Super)
$400 Radeon Vega 56
$500 Radeon Vega 64
$500 GeForce RTX 2070 (non-Super)
$700 GeForce RTX 2080 (non-Super)
$700 Radeon RX VII

Yep this news is 3 weeks too late for me. Just bought two RTX 2070's and a RTX 2080 Hybrid.
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Message 2002320 - Posted: 12 Jul 2019, 23:12:57 UTC

Looks like AMD figured out the problem with Ryzen 2 not booting on the 5.0 Linux kernels. Supposed to be shipping updated BIOS firmware to the board partners so that you can boot the latest distros with the latest kernels that use systemd.

https://www.phoronix.com/scan.php?page=news_item&px=AMD-Releases-Linux-Zen2-Fix
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Message 2002321 - Posted: 12 Jul 2019, 23:23:50 UTC

I have spent some time benchmarking apps on the 3700x on a C6H (x370) with optimized defaults for BIOS settings. The first results are from running 16 repetitions of all apps for 3 WUs.


The first test ran a mix of all apps, which may not represent real performance, so I also ran dedicated runs for each app:


The system is up and running with the r3345 avx app. The major pf results were not repeatable, so must have been some other factor impacting it.
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Message 2002331 - Posted: 13 Jul 2019, 0:06:04 UTC - in response to Message 2002321.  

I have spent some time benchmarking apps on the 3700x on a C6H (x370) with optimized defaults for BIOS settings. The first results are from running 16 repetitions of all apps for 3 WUs.


The first test ran a mix of all apps, which may not represent real performance, so I also ran dedicated runs for each app:


The system is up and running with the r3345 avx app. The major pf results were not repeatable, so must have been some other factor impacting it.

Thanks for the benchmark runs Rick. Interesting. Finally Ryzen 3000 can take advantage of the AVX instruction set because it has a proper 256 bit width and can run the instruction in one clock cycle.
Looks like the r3345 AVX app is the new best app for Ryzen 3000.

What kind of temps did you see when running the AVX apps? Were they much higher than running the SSE variants? AMD is not declocking the cpu when AVX instructions run like Intel does.
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Message 2002356 - Posted: 13 Jul 2019, 1:54:40 UTC - in response to Message 2002331.  

What kind of temps did you see when running the AVX apps? Were they much higher than running the SSE variants? AMD is not declocking the cpu when AVX instructions run like Intel does.


The temps are not being displayed in glances. Perhaps the kernel isn't ready for the new processors yet, but I didn't dig any deeper into it.
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Message 2002361 - Posted: 13 Jul 2019, 2:41:47 UTC - in response to Message 2002356.  

You don't run any monitoring utilities I take it? At minimum you would still get the cpu temps from the k10temp driver which is bundled with the kernels.

If you have a recent ASUS motherboard with a WMI BIOS, you can install the asus-wmi-sensor driver.

Just found another driver that takes the place of k10temp and shows more than just the cpu Tctrl and Tdie temps.

https://github.com/ocerman/zenmonitor

needs a new driver called zenpower

https://github.com/ocerman/zenpower

But the monitor shows quite a lot. Not as much as asus-wmi-sensor driver. But decent


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Message 2002376 - Posted: 13 Jul 2019, 7:51:34 UTC
Last modified: 13 Jul 2019, 7:55:36 UTC

Got my 3600 assembled and running. Unfortunately it picked up a pile of Milkyway (GPU) work which its working through now. Once that is done I will get it doing Seti work. Its this one

Motherboard is an ASUS Prime X570-P and CPU is a Ryzen 3600 (without the X).

It doesn't recognise my HyperX Predator DDR4-3200 memory correctly, thinks its DDR4-2400. I can manually set the speed to 3200 but it doesn't seem to allow me to select the XMP profile for it. As soon as I reboot its back to 2400MHz. According to the BIOS SPD info the memory has two XMP profiles, one at 3200MHz cl16 and the second at 3000MHz cl15. I downloaded the latest BIOS from ASUS site (0804) and updated it. but that made no difference. Have logged a bug report with them.
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Message 2002385 - Posted: 13 Jul 2019, 13:25:28 UTC

The temps of the 3700x were fine in Windows.
Did run prime95 and test etc. It did go to around 70 degrees C at max with SMT enabled.
When i run SMT disabled it is around 65 instead.


One thing that i mentioned in one test suite is perhaps why i always tend to disable any kind of HT even since Intel times is that one benchmark when i ran a GPU test is so much slower in SMT enabled vs SMT disabled... 220 FPS in SMT Disabled mode vs 172 FPS in SMT Enabled mode even if the cores speed were roughly the same..

I will test that further on, Is still in vacation mode etc etc.

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Message 2002398 - Posted: 13 Jul 2019, 15:19:19 UTC - in response to Message 2002385.  

The temps of the 3700x were fine in Windows.
Did run prime95 and test etc. It did go to around 70 degrees C at max with SMT enabled.
When i run SMT disabled it is around 65 instead.


One thing that i mentioned in one test suite is perhaps why i always tend to disable any kind of HT even since Intel times is that one benchmark when i ran a GPU test is so much slower in SMT enabled vs SMT disabled... 220 FPS in SMT Disabled mode vs 172 FPS in SMT Enabled mode even if the cores speed were roughly the same..

I will test that further on, Is still in vacation mode etc etc.

Depends on which version of Prime95 uses AVX instructions. I think the earlier versions did not but the latest does. Was that with the stock Wraith cooler?
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Message 2002525 - Posted: 14 Jul 2019, 9:42:26 UTC - in response to Message 2002398.  

Yes. It was the AVX version and i use a noctua nh-u14s cooler.

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Message 2002534 - Posted: 14 Jul 2019, 12:35:35 UTC

If you are wondering what kind of crunching results a 3700x is getting in our world here is one example.

From RuelKe https://setiathome.berkeley.edu/show_host_detail.php?hostid=8759695

His cpu tasks are running a good ~10 minutes faster than mine.

Tom
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\\// Live Long & Prosper (starting tomorrow ;)
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Message 2002560 - Posted: 14 Jul 2019, 16:14:46 UTC - in response to Message 2002534.  

I think that is mostly due him running the AVX application instead of the normal SSE41. The clocks are the same.
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Message 2002568 - Posted: 14 Jul 2019, 17:14:17 UTC - in response to Message 2002560.  

I think that is mostly due him running the AVX application instead of the normal SSE41. The clocks are the same.


So to replicate I would need not only to upgrade to that cpu but switch to the AVX cpu app. Oh, well.

Tom
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Message 2002573 - Posted: 14 Jul 2019, 17:30:20 UTC

Not that particular cpu per se, just a Zen 2 cpu which has the better designed math functions compared to earlier versions. Just look at his benchmark charts earlier in the thread for comparison.

It was exactly as I predicted with the doubling in the FPU register width.
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Message 2002661 - Posted: 15 Jul 2019, 2:18:06 UTC - in response to Message 2002573.  

Not that particular cpu per se, just a Zen 2 cpu which has the better designed math functions compared to earlier versions. Just look at his benchmark charts earlier in the thread for comparison.

It was exactly as I predicted with the doubling in the FPU register width.


I went back up and looked at his benchmarks and still couldn't really make heads or tails of them. The "average cpu time" seems to be too high.

Tom
I will stop procrastinating tomorrow.
\\// Live Long & Prosper (starting tomorrow ;)
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Message 2002674 - Posted: 15 Jul 2019, 4:24:15 UTC - in response to Message 2002661.  

Not that particular cpu per se, just a Zen 2 cpu which has the better designed math functions compared to earlier versions. Just look at his benchmark charts earlier in the thread for comparison.

It was exactly as I predicted with the doubling in the FPU register width.


I went back up and looked at his benchmarks and still couldn't really make heads or tails of them. The "average cpu time" seems to be too high.

Tom

He runs stock with no overclock and base memory speeds. Compare the times of the SSE41 app to the AVX or AVX512 app. The AVX apps are significantly faster.
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Message 2002683 - Posted: 15 Jul 2019, 6:22:27 UTC - in response to Message 2002661.  

I went back up and looked at his benchmarks and still couldn't really make heads or tails of them. The "average cpu time" seems to be too high.

Tom


System is using optimized defaults BIOS settings. CPB is enabled, though thermal solution only allows sustained boost to 4.1GHz. The benchMT runs used 3 WUs from the samples provided with the app. Two are Arecibo and one GBT. At least 2 of the 3 are vlar. That’s what causes the long run times.
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Message 2002698 - Posted: 15 Jul 2019, 12:48:34 UTC - in response to Message 2002674.  

Not that particular cpu per se, just a Zen 2 cpu which has the better designed math functions compared to earlier versions. Just look at his benchmark charts earlier in the thread for comparison.

It was exactly as I predicted with the doubling in the FPU register width.


I went back up and looked at his benchmarks and still couldn't really make heads or tails of them. The "average cpu time" seems to be too high.

Tom

He runs stock with no overclock and base memory speeds. Compare the times of the SSE41 app to the AVX or AVX512 app. The AVX apps are significantly faster.


Ah, I see said the blind man. Thank you for clearing up what is blinding obvious once it was explained :(

Tom
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\\// Live Long & Prosper (starting tomorrow ;)
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Message 2002768 - Posted: 15 Jul 2019, 21:45:45 UTC
Last modified: 15 Jul 2019, 21:58:31 UTC

For those of you playing with the new Ryzen 9 3900X, this post by Elmor over at OCN nicely demonstrates the advantage of having two CCD in the package via some nice graphs. AMD made a decision to hamstring memory write performance by halving the write cycle rate (16B) compared to the read cycle rate (32B) because AMD says in general, people do more reads than writes. So for anyone wondering why the memory write performance has degraded in Aida64 benchmarks compared to Ryzen 2700X, this explains it.

https://www.overclock.net/forum/13-amd-general/1728878-ryzen-3000-memory-fabric-x370-x470-x570-5.html#post28034834

Also TechSpot has an article comparing Intel Core i9-9900K to Ryzen 9 3900X and Ryzen 3700X with all cores locked to 4Ghz and core count equalized at 8 cores to demonstrate the Zen 2's IPC increase over previous generations.

https://www.techspot.com/article/1876-4ghz-ryzen-3rd-gen-vs-core-i9/
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