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systems-ml

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This repository is a CacheLib prototype of TARDIS, a learned cache eviction policy as part of the LDOS Expeditions project at UT Austin. It implements LRUForgive and S3FIFOForgive with a log-structured multithreaded architecture, and is evaluated against LRU & S3FIFO on real traces to to measure miss-ratio improvement under high eviction pressure.

  • Updated Aug 5, 2026
  • C++

Certified Sparse Attention: runtime-verified fidelity for sparse-attention LLM serving. Label-free detection, anytime-valid confidence sequences, elastic probe scheduling. Smoke-scale H1-H4 results on Qwen2.5-0.5B/1.5B (AUC 0.92, Spearman -0.90).

  • Updated Aug 7, 2026
  • Python

This repository contains a set-associative cache simulator in C with four eviction policies: LRU, LFU, Bélády's OPT, and an online perceptron-based policy that scores by recency, frequency, and per-PC weights updated from a circular eviction history to explore whether a lightweight ML model can approximate OPT at runtime with no offline training.

  • Updated Apr 23, 2026
  • C

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