sgl-project/sglang-jax

[Feature] Support evict policy for LoRA

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#494 opened on Nov 27, 2025

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Featuregood first issuelora

Description

Checklist

Motivation

Support evict policy for LoRA.

Note: Please initialize the zeros array, and load the weight for it rather than load it directly to overwrite the existing array because this results in mistakes when calculating the lora output.

Related resources

Contributor guide

Tech stack
python
Domain
backend
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Python
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Implement an eviction policy for LoRA weights, ensuring to initialize zeros array and load weights correctly to avoid calculation errors. Start by understanding the current LoRA loading and inference flow.