Youyou Lu

TapeOBS is an archive storage service offered by Huawei Cloud, which delivers high cost-efficiency by leveraging tape to store large volumes of archived data. Although tape boasts a low total cost of ownership, its inherent characteristics (e.g., a limited number of drives within a tape library)...

Approximate Nearest Neighbor Search (ANNS) is widely used in various scenarios. For billion-scale ANNS, on-disk graph-based indexes, which organize the vectors as a graph and store them on disk, are favored for their performance and cost-efficiency. However, existing indexes can not maintain a st...

System-level GPU checkpoint/restore (C/R) enables several critical features such as elastic scaling, task switching, and fault tolerance, for modern GPU workloads in a unified and application-transparent manner. However, existing approaches present fundamental limitations: they fail to simultaneo...

ByteStore is a distributed append-only storage system that serves as the foundational storage layer of the ByteDance infrastructure. Initially, storage services on ByteStore use compaction for garbage collection (GC). Additional writes induced by compaction and the SSD space occupied by stale dat...