According to this paper, GPU4FS is a file system that can run on the GPU and be accessed by applications. Since GPUs cannot make system calls, GPU4FS uses shared video memory (VRAM) and a parallel queue implementation. Applications running on the GPU can utilize GPU4FS after modifying their code, eliminating the need for a CPU-side file system when accessing the file system. The experiments are done on Optane memory.

It would be interesting to know if this approach could optimize the performance of training and inference for large models.