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Link if still searching for it. US$ 140 if I'm not mistakenIf anyone wants to get rid of their 512G Optane DCPMM DIMMs, let me know
Gen2's 128GB can be found sub 100US$ now. Gen1 128GB can be bought at 20US$ for lets say 50x
Unfortunately, the NMB1XXD512GPS are Gen2 (NMB**), which only work on Ice Lake. You need NMA** models for Cascade Lake. Am I right about that?
I’ve been monitoring eBay for pmem 300…I’ve seen literally zero.
since I’ve already got 2tb of pmem100 and since ice lake was only on the market for like 9 months I don’t see pmem200 as much of an upgrade; it’s cheap because it was dead end before it even launched.
the same is technically true for pmem300 too but at least that platform supports 4th and 5th gen xeons; you’d have to throw out the pmem to move to 5th gen but at least you can keep your motherboard and ddr5.
since I’ve already got 2tb of pmem100 and since ice lake was only on the market for like 9 months I don’t see pmem200 as much of an upgrade; it’s cheap because it was dead end before it even launched.
the same is technically true for pmem300 too but at least that platform supports 4th and 5th gen xeons; you’d have to throw out the pmem to move to 5th gen but at least you can keep your motherboard and ddr5.
I'm gonna drop an unoriginal cockamamie idea into this thread, ready? 512GB at $140 (for gen2 DCPMM no less) is astounding in dollar per byte compared to optane in NVMe format. Obviously built into that price is the fact that it has to be paired with very specific servers.
What would it take (not that this would be remotely practical for anyone to develop) to make a PCIe card that slots these DIMMs and serves their low latency (well, medium latency, now) high endurance nonvolatile goodness over NVMe?
More dumb ideas for optane DIMMs: Running huge LLMs off CPU molasses-slow.
What would it take (not that this would be remotely practical for anyone to develop) to make a PCIe card that slots these DIMMs and serves their low latency (well, medium latency, now) high endurance nonvolatile goodness over NVMe?
More dumb ideas for optane DIMMs: Running huge LLMs off CPU molasses-slow.
Something like this:
(just very, very custom for DCPMM...)
You could probably also build it using a big, very expensive FPGA instead of an ASIC.
Awesome... DDR4 over CXL. Yeah and if that could support DCPMM, wow.
Another silly perspective... I'm not sure how many but i guess it seems doable to have 4 512GB sticks for 2TB of DCPMM, so these Xeon Scalable servers could be thought of as very fancy, very bulky, quite expensive, network attached SSDs with builtin compute. This would have been more impressive/fun with 4 or 8TB.
Another silly perspective... I'm not sure how many but i guess it seems doable to have 4 512GB sticks for 2TB of DCPMM, so these Xeon Scalable servers could be thought of as very fancy, very bulky, quite expensive, network attached SSDs with builtin compute. This would have been more impressive/fun with 4 or 8TB.
There is actually a specific optane based expansion product already, not CXL though: SMART Modular Announces the SMART Kestral PCIe Optane Memory Add-in-Card to Enable Memory Expansion and Acceleration
That seems like it would have been easier, according to this it's a 150W (!) FPGA: https://www.smtreports.com/salesLit..._Accelerator_with_Intel_Optane_tech_brief.pdfThat’s a hell of a heat sink. One wonders if their “fpga” is actually an LGA3647 Xeon
Why not stick a xeon 4208 3647 with bare metal OS to handle everything? Lower power and you don't need to touch Verilog/VHDL/Cthulhu
Anyone still looking for any NMA1XBD512GQS? I might have some extra to let go of for $100-$110ish.
Just noticed that someone sucked in around 370x 128GB (Gen1) on eBay for about 27-30US$ and 150x 256GB (Gen1) around 60USD. Received confirmation that they were really sold by 4 sellers to just 1 buyer.
Reminds me at the ConnectX-6 deal, when a single entity bought HUNDREDs of ConnectX-6 cards just hours after the deal was posted
Yeah I think you are still miffed about that, right? What would somebody do with all those Optanes? Especially since you need a suitable board and thanks to Intel, which has product-differentiated itself close to bankruptcy judging from stock price, you also need a processor which supports them.
Cpus with optane gen1 support start at like 100$.
The last 2U4N systems i picked up at 300€ for the full system with all 4nodes support optane.
The dimms to fill them up will run you more than the supporting hardware.
The last 2U4N systems i picked up at 300€ for the full system with all 4nodes support optane.
The dimms to fill them up will run you more than the supporting hardware.
I believe this is a flawed calculation. You get 4x the available RAM for the same price of a 32GB DDR4 2666Mhz ECC with comparable performance (latency) and the option to use them as storage. That is what makes them count these days. The base hardware doesn't matter. And for the majority of use cases of these servers, they are still competitive enough.