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A Fast Solver-Free Algorithm for Traffic Engineering in Large-Scale Data Center Network

Talkat NSDI '26 · 2026-05-04..05-06· [databases, distributed-systems]
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name:Zhen Yao
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name:Xia Zhu
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Sequential Source-Destination Optimization (SSDO) decomposes DCN TE into per source‑destination subproblems and replaces per‑subproblem LP solves with a solver-free binary search (Balanced Binary Search Method) that finds split ratios minimizing MLU; it orders updates by the current hottest link to converge fast. On Meta topologies it reports 65% MLU reduction vs TEAL and 60% vs POP while delivering a 12× speedup over POP, handles ~90,000‑variable scales, supports hot/cold/hybrid seeds, and yields interruptible, near‑LP solutions.

AI-written summary · about

  1. 0:00Introduction
  2. 1:44Optimization challenges
  3. 3:53Sequential vs parallel methods
  4. 5:17SSDO algorithm core
  5. 7:49Balancing split ratios
  6. 9:37SSDO deployment
  7. 10:40SSDO solution quality
  8. 12:30Conclusion
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