Files
axolotl/tests/e2e/test_diffusion.py
Wing Lian fc4e37920b transformers v5 upgrade (#3272)
* Prepare for transformers v5 upgrade

* fix hf cli

* update for hf hub changes

* fix tokenizer apply_chat_template args

* remap include_tokens_per_second

* fix tps

* handle migration for warmup

* use latest hf hub

* Fix scan -> ls

* fix import

* fix for renaming of mistral common tokenizer -> backend

* update for fixed tokenziation for llama

* Skip phi35 tests for now

* remove mistral patch fixed upstream in huggingface/transformers#41439

* use namespacing for patch

* don't rely on sdist for e2e tests for now

* run modal ci without waiting too

* Fix dep for ci

* fix imports

* Fix fp8 check

* fsdp2 fixes

* fix version handling

* update fsdp version tests for new v5 behavior

* Fail multigpu tests after 3 failures

* skip known v5 broken tests for now and cleanup

* bump deps

* unmark skipped test

* re-enable test_fsdp_qlora_prequant_packed test

* increase multigpu ci timeout

* skip broken gemma3 test

* reduce timout back to original 120min now that the hanging test is skipped

* fix for un-necessary collator for pretraining with bsz=1

* fix: safe_serialization deprecated in transformers v5 rc01 (#3318)

* torch_dtype deprecated

* load model in float32 for consistency with tests

* revert some test fixtures back

* use hf cache ls instead of scan

* don't strip fsdp_version

more fdsp_Version fixes for v5
fix version in fsdp_config
fix aliasing
fix fsdp_version check
check fsdp_version is 2 in both places

* Transformers v5 rc2 (#3347)

* bump dep

* use latest fbgemm, grab model config as part of fixture, un-skip test

* import AutoConfig

* don't need more problematic autoconfig when specifying config.json manually

* add fixtures for argilla ultrafeedback datasets

* download phi4-reasoning

* fix arg

* update tests for phi fast tokenizer changes

* use explicit model types for gemma3

---------

Co-authored-by: Wing Lian <wing@axolotl.ai>

* fix: AutoModelForVision2Seq -> AutoModelForImageTextToText

* chore: remove duplicate

* fix: attempt fix gemma3 text mode

* chore: lint

* ga release of v5

* need property setter for name_or_path for mistral tokenizer

* vllm not compatible with transformers v5

* setter for chat_template w mistral too

---------

Co-authored-by: NanoCode012 <nano@axolotl.ai>
Co-authored-by: salman <salman.mohammadi@outlook.com>
2026-01-27 17:08:24 -05:00

138 lines
4.9 KiB
Python

"""E2E smoke test for diffusion training plugin."""
from axolotl.common.datasets import load_datasets
from axolotl.train import train
from axolotl.utils.config import normalize_config, validate_config
from axolotl.utils.dict import DictDefault
from tests.e2e.utils import check_model_output_exists
class TestDiffusion:
"""Test case for diffusion training plugin."""
def test_diffusion_smoke_test(self, temp_dir):
"""
Smoke test for diffusion training to ensure the plugin loads and trains without
error.
"""
cfg = DictDefault(
{
"base_model": "HuggingFaceTB/SmolLM2-135M",
"tokenizer_type": "AutoTokenizer",
"trust_remote_code": True,
"sequence_len": 256,
"val_set_size": 0.1,
"special_tokens": {
"pad_token": "<|endoftext|>",
},
"datasets": [
{
"path": "mhenrichsen/alpaca_2k_test",
"type": "alpaca",
},
],
"num_epochs": 1,
"max_steps": 3,
"micro_batch_size": 1,
"gradient_accumulation_steps": 1,
"output_dir": temp_dir,
"learning_rate": 0.0001,
"optimizer": "adamw_torch",
"lr_scheduler": "cosine",
"bf16": True,
"save_first_step": False,
"logging_steps": 1,
"eval_steps": 3,
# Diffusion-specific config
"plugins": ["axolotl.integrations.diffusion.DiffusionPlugin"],
"diffusion": {
# sample generation
"generate_samples": True,
"generation_interval": 1,
"num_generation_samples": 1,
"generation_steps": 2,
"generation_max_length": 32,
"generation_temperature": 0.0,
# training-specific
"mask_token_id": 16,
"eps": 1e-3,
"importance_weighting": False,
},
}
)
cfg = validate_config(cfg)
normalize_config(cfg)
dataset_meta = load_datasets(cfg=cfg)
train(cfg=cfg, dataset_meta=dataset_meta)
check_model_output_exists(temp_dir, cfg)
def test_diffusion_sft_labels(self, temp_dir):
"""Test that diffusion training properly handles SFT data with labels."""
cfg = DictDefault(
{
"base_model": "HuggingFaceTB/SmolLM2-135M",
"tokenizer_type": "AutoTokenizer",
"trust_remote_code": True,
"sequence_len": 256,
"val_set_size": 0.1,
"special_tokens": {
"pad_token": "<|endoftext|>",
},
"datasets": [
{
"path": "mhenrichsen/alpaca_2k_test",
"type": "alpaca",
},
],
"num_epochs": 1,
"max_steps": 3,
"micro_batch_size": 1,
"gradient_accumulation_steps": 1,
"output_dir": temp_dir,
"learning_rate": 0.0001,
"optimizer": "adamw_torch",
"lr_scheduler": "cosine",
"bf16": True,
"save_first_step": False,
"logging_steps": 1,
"eval_steps": 2,
# Diffusion-specific config
"plugins": ["axolotl.integrations.diffusion.DiffusionPlugin"],
"diffusion": {
# sample generation
"generate_samples": True,
"generation_interval": 1,
"num_generation_samples": 1,
"generation_steps": 2,
"generation_max_length": 32,
"generation_temperature": 0.0,
# training-specific
"mask_token_id": 16,
"eps": 1e-3,
"importance_weighting": True,
},
# Ensure we have proper SFT labels
"train_on_inputs": False,
}
)
cfg = validate_config(cfg)
normalize_config(cfg)
dataset_meta = load_datasets(cfg=cfg)
# Verify that the dataset has labels
sample = dataset_meta.train_dataset[0]
assert "labels" in sample, "SFT dataset should have labels"
# Check that some labels are -100 (prompt tokens)
labels = sample["labels"]
if hasattr(labels, "tolist"):
labels = labels.tolist()
assert -100 in labels, "SFT dataset should have -100 labels for prompt tokens"
train(cfg=cfg, dataset_meta=dataset_meta)
check_model_output_exists(temp_dir, cfg)