Author

Qi Chen

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Preprint Oct 2026

uGDS: A User-Space Development Kit for High-Performance GPU Direct Storage

Data-intensive GPU applications increasingly rely on NVMe SSDs to extend GPU memory. NVIDIA GPU Direct Storage (GDS) enables direct SSD-GPU transfers via PCIe peer-to-peer DMA, eliminating host staging. However, GDS retains three key limitations: (1) its control path traverses the kernel for every I/O request, introduc...

Jin-Tiao Wei, Guan-Yi Chen, Qi Chen et al. · 0 citations

Book Open access Sep 2026

Bridging CPU and GPU I/O with a Device-Resident File System

Modern AI and data analytics workloads have terabyte-scale datasets, making GPUs access storage frequently. GPUDirect Storage allows the data path from SSD to GPU to bypass CPU memory. However, the file system shared by the CPU and GPU still runs on the CPU. Existing GPU file systems cache metadata to avoid frequent ac...

Qi Chen, Guan-Yi Chen, Yu-Jie Ren et al. · Proceedings of the 18th ACM... · 0 citations