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Pengfei Zuo

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titleconferencedate
Breaking the Reward Barrier: Accelerating Tree-of-Thought Reasoning via Speculative...20th USENIX Symposium on Operating Systems Design and Implementation (OSDI '26)2026-07-13
Proposes SPEX, a speculative-exploration system implemented on SGLang that predicts and expands likely Tree-of-Thought branches before reward feedback, using…
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Cost-Efficient Large Language Model Serving for Multi-turn Conversations with...USENIX ATC 20242024-07-10
A hierarchical KV caching system called CachedAttention reuses key/value tensors across multi-turn chats by spilling caches to SSD and host DRAM, using…
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SMART: A High-Performance Adaptive Radix Tree for Disaggregated MemoryOSDI 20232023-07-10
Builds a radix tree tuned for disaggregated memory and actually implements it: internal pointers live in fixed-size slots updated atomically via RDMA…
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FUSEE: A Fully Memory-Disaggregated Key-Value StoreFAST '23: 21st USENIX Conference on File and Storage Technologies2023-02-21
FUSEE builds a fully memory-disaggregated key-value store that moves index and memory-management metadata onto memory nodes and lets clients manage them…
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ROLEX: A Scalable RDMA-oriented Learned Key-Value Store for Disaggregated Memory SystemsFAST '23: 21st USENIX Conference on File and Storage Technologies2023-02-21
ROLEX is a key-value store that pairs retraining-decoupled learned index models with RDMA so compute nodes perform updates via one-sided RDMA verbs while…
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uKharon: A Membership Service for Microsecond ApplicationsUSENIX ATC '222022-07-11
uKharon is a membership service that uses RDMA to push membership and failover to microsecond scales: a multi-level failure detector (kernel crash…
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FORD: Fast One-sided RDMA-based Distributed Transactions for Disaggregated Persistent...FAST '222022-02-22
FORD uses one-sided RDMA to bypass remote CPUs and makes three concrete protocol changes: hitchhiker locking that batches read+lock into one RDMA to cut…
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One-sided RDMA-Conscious Extendible Hashing for Disaggregated MemoryUSENIX ATC '212021-07-14
RACE hashing is an RDMA-conscious extendible hash table that executes every index operation using one-sided RDMA verbs, avoids remote compute by keeping all…
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Lock-free Concurrent Level Hashing for Persistent MemoryUSENIX ATC '202020-07-15
Lock-free Concurrent Level Hashing for Persistent Memory Zhangyu Chen, Yu Hua, Bo Ding, and Pengfei Zuo, Huazhong University of Science and Technology With…
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