Nvidia GPU VRAM as Swap Space: Is it Worth it?
- Use Nvidia GPU’s VRAM as swap space on Linux to boost performance
- Benefits include reduced swapping to SSD and increased performance in certain workloads
- However, there are limitations and potential drawbacks to consider
The Concept
Using Nvidia GPU’s VRAM as swap space on Linux is an innovative idea that has sparked debate among tech enthusiasts.
> 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.
As one forum user noted, this feature is particularly useful for laptops with limited memory and no upgrade options.
Performance Considerations
However, some users have raised concerns about the performance implications of using VRAM as swap space.
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.
The Internet’s Verdict: 60% Hyped, 40% Skeptical
Potential Use Cases
Despite the limitations, there are potential use cases where using VRAM as swap space could be beneficial. For example,
Remember how 16GBs used to be an enterprise level database mainframe? Well, GPUs also have stupid amounts of compute on them. I have to imagine that there is some kind of database format that’s useful with GPU compute attached.
As one user pointed out, the massive compute power of modern GPUs could be leveraged to create innovative database solutions.
Focus Keyword: Nvidia VRAM
