AMD “SSG” API Manual: Using a 2TB Solid State Drive with the AMD SSG GPU [pdf]
pro.radeon.com
pro.radeon.com
The manual is relatively straight forward, it shows 3 vendor-API extensions to OpenCL, OpenGL, and DirectX which allows the programmer to create files on the GPU. AMD markets this GPU as being able to play 8k video or perhaps do some kind of huge memory computation (without ever being bottlenecked by the PCIe bus).
EDIT: There's a second, shorter "device driver" manual which shows how the card works. Apparently, there are 4 NVMe SSDs on board the GPU.
http://pro.radeon.com/_downloads/SSG_Driver_Installer_Guide....
The product page suggests that this sort of GPU can handle streaming 8k video. So maybe the card was designed for OpenCL accelerated video editing or some other 3d-task (maybe 3d rendering) with very large texture data.
The ability to work on full res 4k/8k video (in realtime) without generating down-scaled proxies will be a huge time-saver for editors in addition to saving money during post.
On Nvidia if you want this, I think you can basically achieve it using GPUDirect anyway if you really want to bypass CPU transfers and go straight from SSD to GPU, via PCIe. I guess it depends exactly on how this card is connected to the disk.
Having it on-card is pretty convenient, though. GPUDirect has practical limitations on what boards/systems it will work with.
With that said, their "standard Vega" chips: the WX 9100, Vega Frontier, and the MI25 seem to work with Linux. Its just that this "SSG" is a $7000 anomaly.
Most likely, some big corporate customer wanted this card for maybe Adobe products (Photoshop? Premier?) or maybe 3d effects like Maya. Considering that AMD's "test product" was an older SSG "Developer Edition" a few years ago, clearly some big customer wanted this card, and clearly wanted it on Windows.
ROCm / HIP / HCC / AMD's next OpenCL implementation are all Linux-only right now, with no Windows support for the HCC compiler (even though its based on Microsoft C++ AMP).
Seriously, it's three very good developers and a few months of work that's holding them back from maybe a hundred million in sales, and at least 20 billion in their stock valuation from being perceived as being in the DL game.
You can the info here
http://support.amd.com/en-us/kb-articles/Pages/AMDGPU-Pro-Dr...
http://support.amd.com/en-us/kb-articles/Pages/Radeon-PRO-SS...