arXiv AI
Sep 2

RW-LoRA: Communication-Efficient Decentralized LoRA Fine-Tuning via Random Walks

RW-LoRA introduces a random‑walk approach to fine‑tune LoRA models in a decentralized setting, using a single model token that moves through the network and updates locally. This eliminates the need for global synchronization and reduces communication and computation costs compared to centralized or gossip‑based methods. The authors provide convergence guarantees for non‑convex objectives and demonstrate competitive performance on NLP tasks across various graph topologies.

By Xingran Chen, Rohit Bhagat, Ghadir Ayache, Rawad Bitar, Yanmin Gong, Salim El Rouayheb