KVR Audio

ozonepaul · Post by **ozonepaul** » Fri Jan 18, 2019 1:23 pm

I'm aware of the low latency/low buffer size issues with AMD Ryzen CPU's clearly shown eg in all the scan pro audio tests:
1. http://www.scanproaudio.info/2017/03/02 ... for-audio/
2. http://www.scanproaudio.info/2017/08/14 ... 20x-1950x/
3. https://www.scanproaudio.info/tag/2700x/
4. http://www.scanproaudio.info/tag/2950x/

According to these tests, the issue is most probably linked to the NUMA management.
Is there any chance that these performance issues will be sorted with the 3rd generation ZEN2 Ryzen processors or there is a known Ryzen 3rd gen. architectural problem, and we can not expect major audio performance improvement?
For an audio PC upgrade - based on the leaked pricing and performance figures - it seems tempting to wait for the release of these new CPUs. (I'm especially interested about the new Ryzen 3700x or the 3850x models). Is it worth waiting for the release/tests of these chips or absolutely no point because there are some known under-laying design problems even with the ZEN 2 technology eg. it's NUMA management will be the same as it was in the previous Ryzen generations?

https://www.pcgamesn.com/amd/amd-zen-2- ... erformance

Pictus · Post by **Pictus** » Fri Jan 18, 2019 3:09 pm

There is a BIG chance the new ZEN2 Ryzen is VERY improved for audio workloads.

For the Threadripper big boys...

Coreprio – Bitsum
Coreprio was initially Bitsum’s custom implementation of AMD’s Dynamic Local
Mode; more configurable and robust than AMD’s implementation, allowing the
user to set the prioritized affinity, thread count and refresh rate.
Dynamic Local Mode applies to the Threadripper 2990wx and 2970wx CPUs,
addressing their asymmetric die performance.

Now Coreprio also offer an experimental function labelled ‘NUMA Dissociater’.
This feature applies to EPYC and TR systems with 4 NUMA nodes.

https://youtu.be/M2LOMTpCtLA

Debutante · Post by **Debutante** » Mon Jan 28, 2019 12:23 pm

This could be major. Major.

kmonkey · Post by **kmonkey** » Mon Jan 28, 2019 1:11 pm

This summer I am buying new configuration for main computer in the studio and i am pretty sure it will be AMD 3000 family based. After 13 years of Intel. I was sneaking for Threadripper but somehow i think i'll go with Ryzen.

Note i don't do just music stuff i am content creator (3d and video rendering) and i a more then pleased from what i saw in other studios in real life scenarios.

I am not going to debate intel vs amd since i have zero emotions for any of them. Like i said i saw real world scenarios and i could care less for online articles (some are really good though). AMD is offering more in my context of work. A lot more.

If they can even deliver half the promises on Ryzen 3000 i will be more then pleased - even if not this will be major upgrade for my studio.

Pictus · Post by **Pictus** » Mon Jan 28, 2019 5:14 pm

Gigabyte Titan Ridge working in Ryzen
https://egpu.io/forums/builds/thunderbo ... theitsage/
Gigabyte Titan Ridge working in Threadripper
https://egpu.io/forums/builds/thunderbo ... theitsage/

Threadripper on x399 Designare thunderbolt 3 - Build a PC - Level1Techs Forums
Elvistitus 2018-10-03 18:07:41 UTC #10
However even though I do get the Titan Ridge tb3 controller with the tb3
firmware already flashed
would it be enough to get tb3 working on the Designare ex 399 with the 2950x ?
Im trying to get a TB3 audio interface (Apollo x8 from Universal Audio ) to work
with this setup.

Elvistitus 2018-10-12 15:43:29 UTC #17
Ok guys finally here’s an update … it works !!
As Wendell and gpio mentions the titan ridge thunderbolt card
with the Threadripper 2950x and a gigabyte x399 mobo works !
I had to power the titan ridge cards with two 6pin pcie power lines
from my psu and also connected the thb_c header to the mobo.
I had to install the thunderbolt drivers for windows 10 and it works as expected !

DJ Warmonger · Post by **DJ Warmonger** » Mon Jan 28, 2019 5:49 pm

I'm looking forward to buy 3800X now, but will wait for actual benchmarks. Performance improvement compared to my 1700 @ 3,6 GHz must be significant.

Actually I don't need 16 cores for audio, single-core performance is what matters here.

BananaJoe · Post by **BananaJoe** » Tue Jan 29, 2019 12:16 am

Ryzen 3 will likely have improved architecture that matches Intel. AMD is more performance per dollar the much worse architecture, it lags at everything not only latency and that is why Ryzen never surpassed Intel in sales. For now the only improvement i`ve heard of is that it shall have 256 bit floating numbers which is what Intel got vs AMD`s 128 bit x 2.

But i`m not that confident, these days a Ryzen 3 benchmark leak showed up, it was a 12 core processor that for some reason did not do well in the benchmark. Maybe it was just a bottleneck, the benchmark computer was detected using 4gb of RAM only but with 6.1gb of free RAM which is weird, unheard of.

DarkERA · Post by **DarkERA** » Wed Jan 30, 2019 6:45 pm

Its worth it to wait for AMD 3rd gen CPU as they have improved its IPC

Debutante · Post by **Debutante** » Thu Jan 31, 2019 8:36 pm

https://hexus.net/tech/news/cpu/126440- ... er-issues/

So after suggesting it WAS NOT the sceduler in 2017, here we are... we could finally get the expected performance...

...where the hell is Kaine?

EuroHero · Post by **EuroHero** » Sat Feb 02, 2019 8:05 pm

AMD Threadriper 2950X or ryzen 9 3850X ?

Pictus · Post by **Pictus** » Sat Feb 02, 2019 8:38 pm

Ryzen 9 3850X

ozonepaul · Post by **ozonepaul** » Mon May 27, 2019 8:13 pm

The 3rd gen. Ryzen processors will be available from July the 7th .
Prices:
$329 for the AMD Ryzen 7 3700X ( with 8 cores and 16-threads, featuring a 3.6GHz base clock with 4.4GHz boost and 36MB cache, with just a 65W TDP );
$399 for the Ryzen 7 3800X (8 cores and 16-threads, base clock 3.9GHz, boost clock 4.5GHz);
$499 for the Ryzen 9 3900X (with 12-cores and 24 threads and base clock 3.8GHz, boost clock of 4.6GHz, 64+6MB Cache).
Looking at the performances, these are phenomenal on paper as far as performance/value.

https://www.amd.com/en/products/specifi ... processors

Kaine · Post by **Kaine** » Tue May 28, 2019 8:52 am

Pictus wrote: ↑Fri Jan 18, 2019 3:09 pm Coreprio – Bitsum

Tried it on 2990WS when it first appeared and it didn't yield any real benefits in testing.

The last AMD chip refresh, however, did seem to tighten up the performance handling over the first gen, so I would hope that they strive to improve it again. They've shown in various updates over the last few years that they are well aware any weakness here and have been actively moving to sort it out, so I would expect it to have been worked on further this time around. If they can close the remaining gap on IPC a bit more then their multi-core advantage should be able to shine.

Pictus · Post by **Pictus** » Tue May 28, 2019 2:38 pm

Looks they will kick Intel ass https://videocardz.com/newz/amd-ryzen-9 ... -cinebench

Funkybot's Evil Twin · Tue May 28, 2019 2:50 pm

Preface: I haven't been keeping tabs on the CPU wars, but a few things that stick out to me with the Ryzen's as audio PCs, are 1) the reports of worse low latency performance, 2) the lower clock speeds and, 3) the missing Thunderbolt support. What's the general consensus on this with the new AMD's?

So if #1 is likely being addressed, how do the lower clock speeds apply? Do the extra threads more than make up for it? What about Thunderbolt on Ryzen? Is that finally addressed? If I were buying a new audio PC this year (not entirely unlikely but I'll probably wait until 2020), I'd definitely want Thunderbolt support in order to give myself more interface options in the future.

AMD Ryzen 3rd gen. ZEN 2 processors for audio PC