51–60 of 142 posts
That page also has a fuse filesystem implementation on top of opencl - https://github.com/Overv/vramfs - which may be more compatible.
use your car for an anchor on a big boat!
Nice idea, but something has gone very wrong here: >Sequential throughput: ~1.3 GB/s [on a RTX 3070 Laptop] This RTX 3070 chip is on PCIe 4.0 x16 which should give 64GB/s. The 8GB of GDDR6 is 448GB/s. Swapping to an NVMe drive would be twice as fast, but with higher latency.
Gen 4.0 x16 is 32 GB/s in each direction, but the way this is implemented is not the way you'd go about this if you wanted high performance. Edit: Their benchmarks are also run using ZRAM, which compresses pages before writing to swap. Not sure what the performance overhead of that is, but it's probably quite a bit. First of all, it's a userspace program hooking the nbd driver, which is known for being slow. It also…
one can get rid of zram and just reimplement some compression in shaders but I think that would be a pointless optimization.
Does anyone these days really use swap for anything than S4 suspend ?
It really depends on what you run and how much RAM you have to do it in. I run some machines into swap just by running a couple browsers and some containers in the background on a 16GB laptop. I've also run a single light browser and essentially nothing else on 4GB and been fine:)
Edit: Typo
>GpuRamDrive
>Create a virtual drive backed by GPU RAM.
https://github.com/prsyahmi/GpuRamDrive
Fork with AMD support:
Earlier quoted context omitted.
Another possible reason that occurred to me: what if you have VRAM but you're not using it all the time? For example, let's say you bought a GPU because you like to play video games. When you're not actively gaming, you probably don't need 16 GB of VRAM just to render the desktop. Might as well use it for something else, right? Edit: Although, this is predicated on the system being able to release VRAM that is acting…
It's easy enough to 'offline' swap space on Linux normally so I suspect that would work fine, as long as you didn't instantly run out of RAM when doing so.
I mean, cool, but I’d rather not?
Nice idea, but something has gone very wrong here: >Sequential throughput: ~1.3 GB/s [on a RTX 3070 Laptop] This RTX 3070 chip is on PCIe 4.0 x16 which should give 64GB/s. The 8GB of GDDR6 is 448GB/s. Swapping to an NVMe drive would be twice as fast, but with higher latency.
RAM/VRAM don’t degrade from use.
> Built for laptops with soldered memory and no upgrade path. If you have an RTX card sitting there with 8GB of VRAM and you're getting swapped to SSD, this puts that VRAM to work. Well, that does at least answer my immediate question about why I would ever swap from expensive RAM to really expensive RAM:) Feels niche, but when you want it it's a good idea.
Another possible reason that occurred to me: what if you have VRAM but you're not using it all the time? For example, let's say you bought a GPU because you like to play video games. When you're not actively gaming, you probably don't need 16 GB of VRAM just to render the desktop. Might as well use it for something else, right? Edit: Although, this is predicated on the system being able to release VRAM that is acting…
The reason I wrote this is I run this laptop in hybrid (AMD display + NVIDIA as swap). So all at VRAM was going to waste.
On your question re: switchable swap. It's on my to-do list ;)