Question Zen 5 Turin builders thread.

[Soulkeeper]

Thanks to both of you.
I was under the impression that R-DIMMs did not buffer the clock. Most documentation only seems to mentions command/address.
I'm kinda excited about ddr5, cudimms, and other memory tech.
Turin having 12 channels is just amazing.
Maybe i'll open a thread in the memory forum section to not derail this thread.

 

[Markfw]

Thanks to both of you.
I was under the impression that R-DIMMs did not buffer the clock. Most documentation only seems to mentions command/address.
I'm kinda excited about ddr5, cudimms, and other memory tech.
Turin having 12 channels is just amazing.
Maybe i'll open a thread in the memory forum section to not derail this thread.

What you should do is monitor this thread as my hardware comes in, and I compare it to Genoa (which ALSO has 12 channel memory) and I benchmark certain things (like avx-512) It is supposed to be up to 40% faster than Genoa !

 

[StefanR5R]

I was under the impression that R-DIMMs did not buffer the clock. Most documentation only seems to mentions command/address.

"Buffering" may not be the right term for what is done with the clock signal. "Repeating" and thereby "boosting" maybe? Anyway, the RCDs on DDR5 (and DDR4 and DDR3) R-/LR-DIMMs have clock input and output pins, and that's obviously where the "C" in "RCD" is coming from. :-) And functionally, it makes sense to have a PLL located directly on such highclocking register devices, so I doubt that any manufacturer makes do without it.

Back on topic, as you may have read, Turin is spec'ed to support DDR5-6000 in general and DDR5-6400 in select configurations (CPU and board combos?). But due to the slow news on Turin-ready boards, I as a member of the unwashed masses have no idea which specific configs those latter are, and if any of them will target the retail market in the first place. Might be for special contracts only, for all we know.

 

[Markfw]

OK< motherboard (dual) and 2nd Turin 64 core coming tomorrow ! Stay tuned !

 

[Markfw]

You don't *have* to populate the second socket of a 2P board. Nor do you have to put it into a case.

(Still, waiting for stock of 1P boards with the necessary BIOS compatibility might make more sense. Compatibility to your ES, that is.)

Well, I could not resist. So case, 2P motherboard and 2 64 core Turins getting built ! Its all here !

 

[igor_kavinski]

2 674 core Turins

Typo? I think it's 384 cores or 768 threads on that mobo? Using a 2000W PSU to power this beast?

 

[Markfw]

Typo? I think it's 384 cores or 768 threads on that mobo? Using a 2000W PSU to power this beast?

2 64 core. 600 watt is all it needs using a Titanium 1000 EVGA though. It will be up soon

 

[StefanR5R]

Phoronix' article on Turin + Supermicro H13SSL-N is out:
https://www.phoronix.com/review/supermicro-h13ssln-epyc-turin

The main takeaway for me: Yep, board revision 2.0 is required. At least the author says so. (Same as what Supermicro says.)

 

[Markfw]

Well, that's the board I had ordered. They could not give me an ETA, and the word back from supermicro directly said the same. So I cancelled the order and get the gigabyte dual that was guaranteed to be compatible. I just emailed wiredzone. we will see.

Oh and the gigabyte motherboard will not even post, but I had 6400 memory which is supposed to be compatible. So I ordered 4800. We will see.

 

[Markfw]

Well, not sure that the the problem, but the gigabyte 2p motherboard will not even post, not even with one cpu. Its going back.

 

[igor_kavinski]

Well, not sure that the the problem, but the gigabyte 2p motherboard will not even post, not even with one cpu. Its going back.

Is there any warranty on the CPU? How can one be sure that the CPU isn't the issue?

 

[Markfw]

Is there any warranty on the CPU? How can one be sure that the CPU isn't the issue?

Both ? that have been tested in a corporate environment ? I doubt that > Most likely does not like ES chips. Will soon see. a supermicro motherboard is coming Sunday. All my Genoa work on supermicro motherboards.

 

[StefanR5R]

Potential mainboad problems:
– Turin readiness
– acceptance of ESs
– vendor lock imprinted into the ES by the previous board

 

[Markfw]

Potential mainboad problems:
– Turin readiness
– acceptance of ESs
– vendor lock imprinted into the ES by the previous board

Yes to one and 2. But in ebay, said number one was fixed, and did NOT say number 2 was a problem. NUmber 3, pretty sure all ES can't be imprinted with a lock. Anyway a single socket board from supermicro that is guaranteed by supermicro to do number one is coming Sunday, so we shall see. I will update then.

 

[igor_kavinski]

I will update then.

Thanks, man!

You are AT's official Turin ambassador! AMD sucks for not supporting you!

 

[StefanR5R]

Phoronix reviewed two Silverstone SP5 coolers…

• XE04-SP5, a tower style air cooler, 4U compatible, with single 92mm fan,
• XE360-SP5, a closed loop liquid cooler, 4U compatible, with three 120mm fans,

…on a 400 W 96c EPYC 9655 in a high-airflow 4U rackmount case.
The air cooler gave about 75 °C CPU temperature (more if the workload isn't quite parallel, such that the CPU reaches its peak clocks — see kernel compilation test), and the CLLC gave about 55…60 °C (again some more in kernel compilation).

Note that these tests are not representative for use of these coolers in medium~low air-flow cases.

 

[Markfw]

Phoronix reviewed two Silverstone SP5 coolers…

• XE04-SP5, a tower style air cooler, 4U compatible, with single 92mm fan,
• XE360-SP5, a closed loop liquid cooler, 4U compatible, with three 120mm fans,

…on a 400 W 96c EPYC 9655 in a high-airflow 4U rackmount case.
The air cooler gave about 75 °C CPU temperature (more if the workload isn't quite parallel, such that the CPU reaches its peak clocks — see kernel compilation test), and the CLLC gave about 55…60 °C (again some more in kernel compilation).

Note that these tests are not representative for use of these coolers in medium~low air-flow cases.

Thanks. This one:

AMD EPYC 9004 CPU 4U SP5 Cooler Fans 6 tubes Nickel plating on copper sp5 | eBay

All products we send are declared on the lowest standard, fees.

www.ebay.com

Is 6 pipes and all the ones I have are 5 pipes and do fine on my 9554's, so since the Turin runs cooler, I am sure that will do fine. If I can ever fine memory that is recognized and it can start loading an OS

 

[StefanR5R]

Phoronix benchmarked EPYC 9655 (96c/192t/400W) with two memory populations:
12 channels versus 8 channels, both DDR5-6000:
https://www.phoronix.com/review/8-12-channel-epyc-9005

As to be expected, HPC workloads with respective memory footprints desperately want all 12 channels, also some of the database benchmarks and AI benchmarks. The encoding benchmarks and image rendering benchmarks which were run were all fine with just 8 channels.

 

[Win2012R2]

If anybody gets Turin working then I'd love to test whether it is possible to install and get running on it Windows Server 2012 R2 (the last per-socket priced OS, later versions priced unacceptably) - will be happy to cover reasonable mutually agreed expenses in doing so!

 

[Markfw]

If anybody gets Turin working then I'd love to test whether it is possible to install and get running on it Windows Server 2012 R2 (the last per-socket priced OS, later versions priced unacceptably) - will be happy to cover reasonable mutually agreed expenses in doing so!

I replied in the other thread. I am and one other are the only people possibly in the world (aside from data centers) that Have Turin's. On ebay, the only ES/QS I ever saw was the ad I responded to, and it had 4 and I bought 2 of them. The other 2 appeared to get bought by one person.

With any luck I will have one up by Sunday, but win 10 or linux is all that I will load on it.I tried win server 2012 ages on a EPYC Naples or Rome, and it worked, thats all I remember.

 

[Win2012R2]

Thanks Mark! We've got both Rome and Naples - Win2012R2 works very nicely on those, well, one odd glitch but passable. Milan most certainly is also supported, and MAYBE Genoa even - since you've got Genoa can I possibly cover your effort in trying installing on one of them? I reckon if it works then good chances it will work on Turin also.

Retail availabilty of Turins is rather poor (as in zero) - I fear we might be into Genoa situation when it took forever to be able to buy production model easily and by that point we'll have Zen 6

 

[mzocyteae]

How does Turin work as a desktop/workstation? (with non-server windows)
I'm wondering if Turin can be a replacement to Thread consumer rippers.

 

[StefanR5R]

Retail availabilty of Turins is rather poor (as in zero) - I fear we might be into Genoa situation when it took forever to be able to buy production model easily and by that point we'll have Zen 6

Here in Germany, a broader range of Turin models is now listed as "available" at several online retailers. That's of course just their listings, I don't know how realistic their claims are, as usual.

What's still severely lacking is availability of Turin ready mainboards. Two examples:
– Supermicro "Rev 2" boards appear to be nowhere in stock yet.
– ASRock Rack's Turin ready BIOS is marked "beta" still.

Turin CPU prices are, naturally, very high. To be fair, price/performance appears broadly similar to or perhaps even a tad bit better than Genoa for the period after its launch. Price/core is higher than Genoa's at launch of course. Genoa retail prices have been going down notably, but this happened only recently, about a few months upfront AMD's Turin reveal. (I hesitate to call it "launch".)

How does Turin work as a desktop/workstation? (with non-server windows)
I'm wondering if Turin can be a replacement to Thread consumer rippers.

Quite several models of both Genoa and Turin offer more than decent single-thread performance. (Edit: Some of the Milan models perhaps too.)
Two potential pain points for desktops:
– Lack of large (and by that I mean LARGE) air coolers for socket SP5. (But watercooling options, while not plenty, are decent.)
– SP5 mainboards are all server mainboards built for high speed air flow chassis only. You can get by with a certain level of forced medium air flow. But you can't quite build an audio workstation this way, for example.

 

[Markfw]

How does Turin work as a desktop/workstation? (with non-server windows)
I'm wondering if Turin can be a replacement to Thread consumer rippers.

I will be using them in consumer threadripper type scenarios.

 

[Win2012R2]

Here in Germany, a broader range of Turin models is now listed as "available" at several online retailers.

Can't see them available in the UK yet and as you say MBs are also a problem, plus coolers to handle 400w, very hot stuff! I like perf very much but the industry has been going backwards in terms of power usage per socket, and it's set to get even worse. And let's not even mention the prices...