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axolotl/examples/ebft/qwen35-9b-ebft-structured.yaml
Wing Lian c50c4acbf4 EBFT: Matching Features, Not Tokens: Energy-Based Fine-Tuning of Language Models (#3527) [skip ci]
* EBFT wip

* fixes

* more fixeS

* add missing strided module

* ebft fixes for multi-turn

* make ebft work with async

* add example for ebft w qwen3.5

* fix for split thinking and update yaml for lora over linear attention only

* enforce_eager for vllm arg in schema

* fix sync weights

* fix multi-gpu

* handle updated sig for mm

* ddp fixes

* improve multi-gpu handling, don't calculate logits, adaptive completion length

* chore: lint

* chore: lint

* support completion_mean

* Address corereview feedback

* clamp min IS ratio

* Address PR code review

* more fixes identified

* address code review

* Fix property from rebase conflict
2026-03-24 18:43:46 -04:00

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1.9 KiB
YAML

# EBFT Structured Mode: Qwen3.5-9B (hybrid linear attention)
#
# Prerequisites:
# 1. Start vLLM on GPU 0:
# CUDA_VISIBLE_DEVICES=0 axolotl vllm-serve examples/ebft/qwen35-9b-ebft-structured.yaml
#
# 2. Run training on GPU 1:
# CUDA_VISIBLE_DEVICES=1 PYTORCH_CUDA_ALLOC_CONF=expandable_segments:True \
# axolotl train examples/ebft/qwen35-9b-ebft-structured.yaml
base_model: Qwen/Qwen3.5-9B
rl: ebft
ebft:
feature_layers: [0.25, 0.5, 0.75]
embed_method: last_token
use_whitening: false
alignment_coef: 1.0
diversity_coef: 1.0
ce_coef: 0.0
trl:
num_generations: 4
max_completion_length: 256
temperature: 0.7
use_vllm: true
vllm_server_host: 0.0.0.0
vllm_server_port: 8000
scale_rewards: true
loss_type: grpo
epsilon: 0.2
generation_kwargs:
stop_token_ids: [248044, 248046] # <|endoftext|>, <|im_end|>
chat_template_kwargs:
enable_thinking: false
vllm_server_timeout: 300
vllm:
gpu_memory_utilization: 0.7
max_model_len: 2048
serve_module: axolotl.scripts.vllm_serve_lora
enforce_eager: true
datasets:
- path: nvidia/OpenCodeInstruct
type: ebft_opencode.transform
split: train[:500]
sequence_len: 1024
micro_batch_size: 1
gradient_accumulation_steps: 4
num_epochs: 1
max_steps: 10
learning_rate: 3.0e-6
optimizer: adamw_torch_fused
lr_scheduler: cosine
warmup_steps: 3
weight_decay: 0.01
adapter: lora
lora_r: 16
lora_alpha: 32
lora_dropout: 0.0
# Target full-attention q/k/v/o on layers 3,7,11,15,19,23,27,31 + MLP on all layers
# Avoids linear_attn modules (in_proj_qkv, in_proj_z, etc.) which break vLLM LoRA
lora_target_modules: ".*\\.layers\\.(3|7|11|15|19|23|27|31)\\.self_attn\\.(q|k|v|o)_proj|.*\\.mlp\\.(gate|up|down)_proj"
bf16: auto
flash_attention: true
gradient_checkpointing: true
special_tokens:
pad_token: "<|endoftext|>"
val_set_size: 0.0
output_dir: ./outputs/ebft-qwen35-9b-structured
wandb_project: ebft
logging_steps: 1
save_steps: 50