6 ms·

Can I ask for anyone from AMD to sell a 4 socket, epyc mobo. Im looking for 256 (4*64) core desktop PC.

NicoJuicy 7y ago
Offtopic: I was looking for a decent AMD replacement for a Intel NUC and didn't found it then, wanted to suggest a new niche in the previous comment ( looked for it a month or so ago). I only found out after my comment it was coming and didn't want to remove my comment ;). As i'm truelly interested in a AMD replacement for my current slow ( and cheap ) Intel NUC :) And euh, looking at the top comments. I'm not alone, sarcasms aside Ontopic: If you order enough of them. They can address a custom team for you! You could earn money like hell launching this on the market! https://www.amd.com/en/products/semi-custom-solutions https://www.amd.com/en/products/semi-custom-solutions Build your dream!
mattmar96 7y ago
What will you use that many cores for?
- robotmay 7y ago
  Running the Slack client?
  - dijit 7y ago
    Slack client is single-threaded. However, 'chrome' would be valid. :)
    - robotmay 7y ago
      Haha I must admit I have run Slack inside Firefox for the past 3 years myself.
- Darkphibre 7y ago
  In Photogrammetry, at least, some programs have codepaths that run concurrently: part heavily parallized for CPU, and part heavily parallized for GPU. I built a monster system with dual 1080s when they first came out, and my i7 became the bottleneck. There's algorithms that haven't yet been optimized for GPU parallelization. And there's datasets that require memory access patterns that aren't amenable to GPU. That said, now I'm curious what a 128-core system would do to memory access. Better hope the algorithms are L2/L3 coherent?
- imtringued 7y ago
  Encoding multiple video streams in real time simultaneously.
gameswithgo 7y ago
Probably can't get enough memory bandwidth on a motherboard for that to be practical
acquacow 7y ago
How do you plan to optimize for the increased NUMA overhead?
cesarb 7y ago
> 4 socket, epyc mobo AFAIK, there aren't any, Epyc only has 1 socket (with 129 PCIe lanes) or 2 socket (using 64 or 48 of the 129 lanes to connect to the other socket) options.
- loeg 7y ago
  Yeah, it's architecturally infeasible on the current platform, nevermind that a single rando on HN's Tesla-priced "desktop" isn't a market segment worth pursuing.
eyegor 7y ago
Desktop? Not only will that be huge, but I doubt such a system would work within the typical 1500-2000w power budget of a household electrical run.
- loeg 7y ago
  Rome is nominally 225W/socket on the very high end of the price range; a 4P config puts you at 900W for the CPUs. Depending on other peripherals you might be at 1200-1500W total but I don't think you necessarily go much past that unless you're loading it up with power hungry graphics cards or something. You'd definitely want an efficient power supply! You're right to express some concern -- practical residential limit for continuous load on a perfect incarnation of the typical residential circuit is something like 1440W total (80% of nominal 15A breaker on 120VAC). Maybe more realistic mid-range products are 155-180W/socket, and that drops the CPU draw down to 620-720W.
  - mcdevilkiller 7y ago
    Wait, in the US you use 15A at 120v? Here in Europe (Spain at least) the typical is 16A at 240v. 1500W isn't that much of a problem. Oven breakers are even 20 or 32A.
    - loeg 7y ago
      > Wait, in the US you use 15A at 120v? Here in Europe (Spain at least) the typical is 16A at 240v. Yep! The typical US residential circuit is only 120v, 15A breaker (so 12A at 80% load). (And that may be only 110-120v.) 20A circuits are also fairly common, but it's not the most common; the majority of wall outlets in a US house will be 15A. In this chart, https://en.wikipedia.org/wiki/NEMA_connector#/media/File:NEMA_simplified_pins.svg https://en.wikipedia.org/wiki/NEMA_connector#/media/File:NEM... , the commonly used US residential sockets are NEMA 5-15 (labelled "Typical Outlet," for 15A breaker circuits), NEMA 5-20 (for, duh, 20A breaker circuits), and NEMA 1-15 ("Old Outlet," in older buildings). > 1500W isn't that much of a problem. Oven breakers are even 20 or 32A. We do have higher amperage circuits for appliances like ovens and clothes driers, but they're usually dedicated circuits and have different socket shapes. You can see the labels "Clothes Dryer" and "Electric Oven" in the chart linked above :-).

Offtopic: I was looking for a decent AMD replacement for a Intel NUC and didn't found it then, wanted to suggest a new niche in the previous comment ( looked for it a month or so ago). I only found out after my comment it was coming and didn't want to remove my comment ;). As i'm truelly interested in a AMD replacement for my current slow ( and cheap ) Intel NUC :) And euh, looking at the top comments. I'm not alone, sarcasms aside Ontopic: If you order enough of them. They can address a custom team for you! You could earn money like hell launching this on the market! https://www.amd.com/en/products/semi-custom-solutions https://www.amd.com/en/products/semi-custom-solutions Build your dream!

mattmar96 7y ago

What will you use that many cores for?

robotmay 7y ago
Running the Slack client?
- dijit 7y ago
  Slack client is single-threaded. However, 'chrome' would be valid. :)
  - robotmay 7y ago
    Haha I must admit I have run Slack inside Firefox for the past 3 years myself.
Darkphibre 7y ago
In Photogrammetry, at least, some programs have codepaths that run concurrently: part heavily parallized for CPU, and part heavily parallized for GPU. I built a monster system with dual 1080s when they first came out, and my i7 became the bottleneck. There's algorithms that haven't yet been optimized for GPU parallelization. And there's datasets that require memory access patterns that aren't amenable to GPU. That said, now I'm curious what a 128-core system would do to memory access. Better hope the algorithms are L2/L3 coherent?
imtringued 7y ago
Encoding multiple video streams in real time simultaneously.

gameswithgo 7y ago

Probably can't get enough memory bandwidth on a motherboard for that to be practical

acquacow 7y ago

How do you plan to optimize for the increased NUMA overhead?

cesarb 7y ago

> 4 socket, epyc mobo AFAIK, there aren't any, Epyc only has 1 socket (with 129 PCIe lanes) or 2 socket (using 64 or 48 of the 129 lanes to connect to the other socket) options.

loeg 7y ago
Yeah, it's architecturally infeasible on the current platform, nevermind that a single rando on HN's Tesla-priced "desktop" isn't a market segment worth pursuing.

eyegor 7y ago

Desktop? Not only will that be huge, but I doubt such a system would work within the typical 1500-2000w power budget of a household electrical run.

loeg 7y ago
Rome is nominally 225W/socket on the very high end of the price range; a 4P config puts you at 900W for the CPUs. Depending on other peripherals you might be at 1200-1500W total but I don't think you necessarily go much past that unless you're loading it up with power hungry graphics cards or something. You'd definitely want an efficient power supply! You're right to express some concern -- practical residential limit for continuous load on a perfect incarnation of the typical residential circuit is something like 1440W total (80% of nominal 15A breaker on 120VAC). Maybe more realistic mid-range products are 155-180W/socket, and that drops the CPU draw down to 620-720W.
- mcdevilkiller 7y ago
  Wait, in the US you use 15A at 120v? Here in Europe (Spain at least) the typical is 16A at 240v. 1500W isn't that much of a problem. Oven breakers are even 20 or 32A.
  - loeg 7y ago
    > Wait, in the US you use 15A at 120v? Here in Europe (Spain at least) the typical is 16A at 240v. Yep! The typical US residential circuit is only 120v, 15A breaker (so 12A at 80% load). (And that may be only 110-120v.) 20A circuits are also fairly common, but it's not the most common; the majority of wall outlets in a US house will be 15A. In this chart, https://en.wikipedia.org/wiki/NEMA_connector#/media/File:NEMA_simplified_pins.svg https://en.wikipedia.org/wiki/NEMA_connector#/media/File:NEM... , the commonly used US residential sockets are NEMA 5-15 (labelled "Typical Outlet," for 15A breaker circuits), NEMA 5-20 (for, duh, 20A breaker circuits), and NEMA 1-15 ("Old Outlet," in older buildings). > 1500W isn't that much of a problem. Oven breakers are even 20 or 32A. We do have higher amperage circuits for appliances like ovens and clothes driers, but they're usually dedicated circuits and have different socket shapes. You can see the labels "Clothes Dryer" and "Electric Oven" in the chart linked above :-).