# Learning Rate Groups

Setting different learning rates by module name

## Background

Inspired by LoRA+, Axolotl allows practitioners to specify separate learning rates for each module or groups of modules in a model.

## Example

    lr_groups:
      - name: o_proj
        modules:
          - self_attn.o_proj.weight
        lr: 1e-6
      - name: q_proj
        modules:
          - model.layers.2.self_attn.q_proj.weight
        lr: 1e-5

    learning_rate: 2e-5

In this example, we have a default learning rate of 2e-5 across the entire model, but we have a separate learning rate of 1e-6 for all the self attention `o_proj` modules across all layers, and a learning are of 1e-5 to the 3rd layer’s self attention `q_proj` module.