Added training for pixart-a

This commit is contained in:
Jaret Burkett
2024-02-13 16:00:04 -07:00
parent 4ec4025cbb
commit 93b52932c1
10 changed files with 288 additions and 24 deletions

View File

@@ -225,6 +225,9 @@ class SDTrainer(BaseSDTrainProcess):
noise_pred_norm = torch.linalg.vector_norm(noise_pred, ord=2, dim=(1, 2, 3), keepdim=True)
noise_pred = noise_pred * (noise_norm / noise_pred_norm)
if self.train_config.pred_scaler != 1.0:
noise_pred = noise_pred * self.train_config.pred_scaler
target = None
if self.train_config.correct_pred_norm or (self.train_config.inverted_mask_prior and prior_pred is not None and has_mask):
if self.train_config.correct_pred_norm and not is_reg:
@@ -343,7 +346,8 @@ class SDTrainer(BaseSDTrainProcess):
print("Prior loss is nan")
prior_loss = None
else:
prior_loss = prior_loss.mean([1, 2, 3])
# prior_loss = prior_loss.mean([1, 2, 3])
loss = loss + prior_loss
# loss = loss + prior_loss
loss = loss.mean([1, 2, 3])
if prior_loss is not None:

View File

@@ -1054,7 +1054,8 @@ class BaseSDTrainProcess(BaseTrainProcess):
self.train_config.noise_scheduler,
{
"prediction_type": "v_prediction" if self.model_config.is_v_pred else "epsilon",
}
},
'sd' if not self.model_config.is_pixart else 'pixart'
)
if self.train_config.train_refiner and self.model_config.refiner_name_or_path is not None and self.network_config is None:

View File

@@ -304,12 +304,16 @@ class TrainConfig:
self.loss_type = kwargs.get('loss_type', 'mse')
# scale the prediction by this. Increase for more detail, decrease for less
self.pred_scaler = kwargs.get('pred_scaler', 1.0)
class ModelConfig:
def __init__(self, **kwargs):
self.name_or_path: str = kwargs.get('name_or_path', None)
self.is_v2: bool = kwargs.get('is_v2', False)
self.is_xl: bool = kwargs.get('is_xl', False)
self.is_pixart: bool = kwargs.get('is_pixart', False)
self.is_ssd: bool = kwargs.get('is_ssd', False)
self.is_vega: bool = kwargs.get('is_vega', False)
self.is_v_pred: bool = kwargs.get('is_v_pred', False)

View File

@@ -13,7 +13,7 @@ from toolkit.models.te_adapter import TEAdapter
from toolkit.models.vd_adapter import VisionDirectAdapter
from toolkit.paths import REPOS_ROOT
from toolkit.photomaker import PhotoMakerIDEncoder, FuseModule, PhotoMakerCLIPEncoder
from toolkit.saving import load_ip_adapter_model
from toolkit.saving import load_ip_adapter_model, load_custom_adapter_model
from toolkit.train_tools import get_torch_dtype
sys.path.append(REPOS_ROOT)
@@ -99,6 +99,13 @@ class CustomAdapter(torch.nn.Module):
tokenizer.add_tokens([self.flag_word], special_tokens=True)
else:
self.sd_ref().tokenizer.add_tokens([self.flag_word], special_tokens=True)
elif self.config.name_or_path is not None:
loaded_state_dict = load_custom_adapter_model(
self.config.name_or_path,
self.sd_ref().device,
dtype=self.sd_ref().dtype,
)
self.load_state_dict(loaded_state_dict, strict=False)
def setup_adapter(self):
if self.adapter_type == 'photo_maker':
@@ -287,6 +294,9 @@ class CustomAdapter(torch.nn.Module):
def load_state_dict(self, state_dict: Mapping[str, Any], strict: bool = True):
strict = False
if self.config.train_only_image_encoder and 'vd_adapter' not in state_dict and 'dvadapter' not in state_dict:
# we are loading pure clip weights.
self.vision_encoder.load_state_dict(state_dict, strict=strict)
if 'lora_weights' in state_dict:
# todo add LoRA
@@ -332,6 +342,8 @@ class CustomAdapter(torch.nn.Module):
if 'vd_adapter' in state_dict:
self.vd_adapter.load_state_dict(state_dict['vd_adapter'], strict=strict)
if 'dvadapter' in state_dict:
self.vd_adapter.load_state_dict(state_dict['dvadapter'], strict=strict)
if 'vision_encoder' in state_dict and self.config.train_image_encoder:
self.vision_encoder.load_state_dict(state_dict['vision_encoder'], strict=strict)
@@ -346,6 +358,9 @@ class CustomAdapter(torch.nn.Module):
def state_dict(self) -> OrderedDict:
state_dict = OrderedDict()
if self.config.train_only_image_encoder:
return self.vision_encoder.state_dict()
if self.adapter_type == 'photo_maker':
if self.config.train_image_encoder:
state_dict["id_encoder"] = self.vision_encoder.state_dict()
@@ -364,7 +379,9 @@ class CustomAdapter(torch.nn.Module):
state_dict["te_adapter"] = self.te_adapter.state_dict()
return state_dict
elif self.adapter_type == 'vision_direct':
state_dict["vd_adapter"] = self.vd_adapter.state_dict()
state_dict["dvadapter"] = self.vd_adapter.state_dict()
if self.config.train_image_encoder:
state_dict["vision_encoder"] = self.vision_encoder.state_dict()
return state_dict
elif self.adapter_type == 'ilora':
if self.config.train_image_encoder:
@@ -617,6 +634,12 @@ class CustomAdapter(torch.nn.Module):
clip_image = (tensors_0_1 - mean.view([1, 3, 1, 1])) / std.view([1, 3, 1, 1])
return clip_image.detach()
def train(self, mode: bool = True):
if self.config.train_image_encoder:
self.vision_encoder.train(mode)
else:
super().train(mode)
def trigger_pre_te(
self,
tensors_0_1: torch.Tensor,
@@ -735,6 +758,9 @@ class CustomAdapter(torch.nn.Module):
self.unconditional_embeds, self.conditional_embeds = clip_image_embeds.chunk(2, dim=0)
def parameters(self, recurse: bool = True) -> Iterator[Parameter]:
if self.config.train_only_image_encoder:
yield from self.vision_encoder.parameters(recurse)
return
if self.config.type == 'photo_maker':
yield from self.fuse_module.parameters(recurse)
if self.config.train_image_encoder:
@@ -753,5 +779,13 @@ class CustomAdapter(torch.nn.Module):
elif self.config.type == 'vision_direct':
for attn_processor in self.vd_adapter.adapter_modules:
yield from attn_processor.parameters(recurse)
if self.config.train_image_encoder:
yield from self.vision_encoder.parameters(recurse)
else:
raise NotImplementedError
def enable_gradient_checkpointing(self):
if hasattr(self.vision_encoder, "enable_gradient_checkpointing"):
self.vision_encoder.enable_gradient_checkpointing()
elif hasattr(self.vision_encoder, 'gradient_checkpointing'):
self.vision_encoder.gradient_checkpointing = True

View File

@@ -151,6 +151,7 @@ class LoRASpecialNetwork(ToolkitNetworkMixin, LoRANetwork):
train_unet: Optional[bool] = True,
is_sdxl=False,
is_v2=False,
is_pixart: bool = False,
use_bias: bool = False,
is_lorm: bool = False,
ignore_if_contains = None,
@@ -197,6 +198,7 @@ class LoRASpecialNetwork(ToolkitNetworkMixin, LoRANetwork):
self.multiplier = multiplier
self.is_sdxl = is_sdxl
self.is_v2 = is_v2
self.is_pixart = is_pixart
if modules_dim is not None:
print(f"create LoRA network from weights")
@@ -224,8 +226,12 @@ class LoRASpecialNetwork(ToolkitNetworkMixin, LoRANetwork):
root_module: torch.nn.Module,
target_replace_modules: List[torch.nn.Module],
) -> List[LoRAModule]:
unet_prefix = self.LORA_PREFIX_UNET
if is_pixart:
unet_prefix = f"lora_transformer"
prefix = (
self.LORA_PREFIX_UNET
unet_prefix
if is_unet
else (
self.LORA_PREFIX_TEXT_ENCODER

View File

@@ -19,10 +19,11 @@ class ACTION_TYPES_SLIDER:
class PromptEmbeds:
text_embeds: torch.Tensor
pooled_embeds: Union[torch.Tensor, None]
# text_embeds: torch.Tensor
# pooled_embeds: Union[torch.Tensor, None]
# attention_mask: Union[torch.Tensor, None]
def __init__(self, args: Union[Tuple[torch.Tensor], List[torch.Tensor], torch.Tensor]) -> None:
def __init__(self, args: Union[Tuple[torch.Tensor], List[torch.Tensor], torch.Tensor], attention_mask=None) -> None:
if isinstance(args, list) or isinstance(args, tuple):
# xl
self.text_embeds = args[0]
@@ -32,10 +33,14 @@ class PromptEmbeds:
self.text_embeds = args
self.pooled_embeds = None
self.attention_mask = attention_mask
def to(self, *args, **kwargs):
self.text_embeds = self.text_embeds.to(*args, **kwargs)
if self.pooled_embeds is not None:
self.pooled_embeds = self.pooled_embeds.to(*args, **kwargs)
if self.attention_mask is not None:
self.attention_mask = self.attention_mask.to(*args, **kwargs)
return self
def detach(self):
@@ -43,13 +48,19 @@ class PromptEmbeds:
new_embeds.text_embeds = new_embeds.text_embeds.detach()
if new_embeds.pooled_embeds is not None:
new_embeds.pooled_embeds = new_embeds.pooled_embeds.detach()
if new_embeds.attention_mask is not None:
new_embeds.attention_mask = new_embeds.attention_mask.detach()
return new_embeds
def clone(self):
if self.pooled_embeds is not None:
return PromptEmbeds([self.text_embeds.clone(), self.pooled_embeds.clone()])
prompt_embeds = PromptEmbeds([self.text_embeds.clone(), self.pooled_embeds.clone()])
else:
return PromptEmbeds(self.text_embeds.clone())
prompt_embeds = PromptEmbeds(self.text_embeds.clone())
if self.attention_mask is not None:
prompt_embeds.attention_mask = self.attention_mask.clone()
return prompt_embeds
class EncodedPromptPair:

View File

@@ -1,4 +1,5 @@
import copy
import math
from diffusers import (
DDPMScheduler,
@@ -25,7 +26,7 @@ SCHEDULER_LINEAR_END = 0.0120
SCHEDULER_TIMESTEPS = 1000
SCHEDLER_SCHEDULE = "scaled_linear"
sdxl_sampler_config = {
sd_config = {
"_class_name": "EulerAncestralDiscreteScheduler",
"_diffusers_version": "0.24.0.dev0",
"beta_end": 0.012,
@@ -43,15 +44,44 @@ sdxl_sampler_config = {
"trained_betas": None
}
pixart_config = {
"_class_name": "DPMSolverMultistepScheduler",
"_diffusers_version": "0.22.0.dev0",
"algorithm_type": "dpmsolver++",
"beta_end": 0.02,
"beta_schedule": "linear",
"beta_start": 0.0001,
"dynamic_thresholding_ratio": 0.995,
"euler_at_final": False,
# "lambda_min_clipped": -Infinity,
"lambda_min_clipped": -math.inf,
"lower_order_final": True,
"num_train_timesteps": 1000,
"prediction_type": "epsilon",
"sample_max_value": 1.0,
"solver_order": 2,
"solver_type": "midpoint",
"steps_offset": 0,
"thresholding": False,
"timestep_spacing": "linspace",
"trained_betas": None,
"use_karras_sigmas": False,
"use_lu_lambdas": False,
"variance_type": None
}
def get_sampler(
sampler: str,
kwargs: dict = None,
arch: str = "sd"
):
sched_init_args = {}
if kwargs is not None:
sched_init_args.update(kwargs)
config_to_use = copy.deepcopy(sd_config) if arch == "sd" else copy.deepcopy(pixart_config)
if sampler.startswith("k_"):
sched_init_args["use_karras_sigmas"] = True
@@ -83,7 +113,7 @@ def get_sampler(
elif sampler == "custom_lcm":
scheduler_cls = CustomLCMScheduler
config = copy.deepcopy(sdxl_sampler_config)
config = copy.deepcopy(config_to_use)
config.update(sched_init_args)
scheduler = scheduler_cls.from_config(config)

View File

@@ -263,6 +263,8 @@ def load_custom_adapter_model(
if path_to_file.endswith('.safetensors'):
raw_state_dict = load_file(path_to_file, device)
combined_state_dict = OrderedDict()
device = device if isinstance(device, torch.device) else torch.device(device)
dtype = dtype if isinstance(dtype, torch.dtype) else get_torch_dtype(dtype)
for combo_key, value in raw_state_dict.items():
key_split = combo_key.split('.')
module_name = key_split.pop(0)

View File

@@ -11,6 +11,7 @@ from collections import OrderedDict
import yaml
from PIL import Image
from diffusers.pipelines.pixart_alpha.pipeline_pixart_alpha import ASPECT_RATIO_1024_BIN, ASPECT_RATIO_512_BIN
from diffusers.pipelines.stable_diffusion_xl.pipeline_stable_diffusion_xl import rescale_noise_cfg
from safetensors.torch import save_file, load_file
from torch.nn import Parameter
@@ -43,6 +44,8 @@ import diffusers
from diffusers import \
AutoencoderKL, \
UNet2DConditionModel
from diffusers import PixArtAlphaPipeline, DPMSolverMultistepScheduler
from transformers import T5EncoderModel
from toolkit.paths import ORIG_CONFIGS_ROOT, DIFFUSERS_CONFIGS_ROOT
@@ -121,7 +124,7 @@ class StableDiffusion:
self.device_state = None
self.pipeline: Union[None, 'StableDiffusionPipeline', 'CustomStableDiffusionXLPipeline']
self.pipeline: Union[None, 'StableDiffusionPipeline', 'CustomStableDiffusionXLPipeline', 'PixArtAlphaPipeline']
self.vae: Union[None, 'AutoencoderKL']
self.unet: Union[None, 'UNet2DConditionModel']
self.text_encoder: Union[None, 'CLIPTextModel', List[Union['CLIPTextModel', 'CLIPTextModelWithProjection']]]
@@ -142,6 +145,7 @@ class StableDiffusion:
self.is_v2 = model_config.is_v2
self.is_ssd = model_config.is_ssd
self.is_vega = model_config.is_vega
self.is_pixart = model_config.is_pixart
self.use_text_encoder_1 = model_config.use_text_encoder_1
self.use_text_encoder_2 = model_config.use_text_encoder_2
@@ -157,7 +161,9 @@ class StableDiffusion:
scheduler = get_sampler(
'ddpm', {
"prediction_type": self.prediction_type,
})
},
'sd' if not self.is_pixart else 'pixart'
)
self.noise_scheduler = scheduler
# move the betas alphas and alphas_cumprod to device. Sometimed they get stuck on cpu, not sure why
@@ -227,7 +233,33 @@ class StableDiffusion:
te1_state_dict['text_projection.weight'] = replacement_weight.to(self.device_torch, dtype=dtype)
flush()
print("Injecting alt weights")
elif self.model_config.is_pixart:
# load the TE in 8bit mode
text_encoder = T5EncoderModel.from_pretrained(
"PixArt-alpha/PixArt-XL-2-1024-MS",
subfolder="text_encoder",
load_in_8bit=True,
device_map="auto",
torch_dtype=self.torch_dtype,
)
# replace the to function with a no-op since it throws an error instead of a warning
text_encoder.to = lambda *args, **kwargs: None
pipe: PixArtAlphaPipeline = PixArtAlphaPipeline.from_pretrained(
model_path,
text_encoder=text_encoder,
dtype=dtype,
device=self.device_torch,
**load_args
).to(self.device_torch)
pipe.transformer = pipe.transformer.to(self.device_torch, dtype=dtype)
flush()
# text_encoder = pipe.text_encoder
# text_encoder.to(self.device_torch, dtype=dtype)
text_encoder.requires_grad_(False)
text_encoder.eval()
pipe.transformer = pipe.transformer.to(self.device_torch, dtype=dtype)
tokenizer = pipe.tokenizer
else:
if self.custom_pipeline is not None:
pipln = self.custom_pipeline
@@ -273,7 +305,11 @@ class StableDiffusion:
# add hacks to unet to help training
# pipe.unet = prepare_unet_for_training(pipe.unet)
self.unet: 'UNet2DConditionModel' = pipe.unet
if self.is_pixart:
# pixart doesnt use a unet
self.unet = pipe.transformer
else:
self.unet: 'UNet2DConditionModel' = pipe.unet
self.vae: 'AutoencoderKL' = pipe.vae.to(self.device_torch, dtype=dtype)
self.vae.eval()
self.vae.requires_grad_(False)
@@ -381,7 +417,8 @@ class StableDiffusion:
sampler,
{
"prediction_type": self.prediction_type,
}
},
'sd' if not self.is_pixart else 'pixart'
)
try:
@@ -425,6 +462,16 @@ class StableDiffusion:
**extra_args
).to(self.device_torch)
pipeline.watermark = None
elif self.is_pixart:
pipeline = PixArtAlphaPipeline(
vae=self.vae,
transformer=self.unet,
text_encoder=self.text_encoder,
tokenizer=self.tokenizer,
scheduler=noise_scheduler,
**extra_args
).to(self.device_torch)
else:
pipeline = Pipe(
vae=self.vae,
@@ -615,6 +662,23 @@ class StableDiffusion:
latents=gen_config.latents,
**extra
).images[0]
elif self.is_pixart:
# needs attention masks for some reason
img = pipeline(
prompt=None,
prompt_embeds=conditional_embeds.text_embeds.to(self.device_torch, dtype=self.unet.dtype),
prompt_attention_mask=conditional_embeds.attention_mask.to(self.device_torch, dtype=self.unet.dtype),
negative_prompt_embeds=unconditional_embeds.text_embeds.to(self.device_torch, dtype=self.unet.dtype),
negative_prompt_attention_mask=unconditional_embeds.attention_mask.to(self.device_torch, dtype=self.unet.dtype),
negative_prompt=None,
# negative_prompt=gen_config.negative_prompt,
height=gen_config.height,
width=gen_config.width,
num_inference_steps=gen_config.num_inference_steps,
guidance_scale=gen_config.guidance_scale,
latents=gen_config.latents,
**extra
).images[0]
else:
img = pipeline(
# prompt=gen_config.prompt,
@@ -1005,12 +1069,53 @@ class StableDiffusion:
f"Batch size of latents {latent_model_input.shape[0]} must be the same or half the batch size of timesteps {timestep.shape[0]}")
# predict the noise residual
noise_pred = self.unet(
latent_model_input.to(self.device_torch, self.torch_dtype),
timestep,
encoder_hidden_states=text_embeddings.text_embeds,
**kwargs,
).sample
if self.is_pixart:
VAE_SCALE_FACTOR = 2 ** (len(self.vae.config['block_out_channels']) - 1)
batch_size, ch, h, w = list(latents.shape)
height = h * VAE_SCALE_FACTOR
width = w * VAE_SCALE_FACTOR
aspect_ratio_bin = (
ASPECT_RATIO_1024_BIN if self.unet.config.sample_size == 128 else ASPECT_RATIO_512_BIN
)
orig_height, orig_width = height, width
height, width = self.pipeline.classify_height_width_bin(height, width, ratios=aspect_ratio_bin)
added_cond_kwargs = {"resolution": None, "aspect_ratio": None}
if self.unet.config.sample_size == 128:
resolution = torch.tensor([height, width]).repeat(batch_size, 1)
aspect_ratio = torch.tensor([float(height / width)]).repeat(batch_size, 1)
resolution = resolution.to(dtype=text_embeddings.text_embeds.dtype, device=self.device_torch)
aspect_ratio = aspect_ratio.to(dtype=text_embeddings.text_embeds.dtype, device=self.device_torch)
if do_classifier_free_guidance:
resolution = torch.cat([resolution, resolution], dim=0)
aspect_ratio = torch.cat([aspect_ratio, aspect_ratio], dim=0)
added_cond_kwargs = {"resolution": resolution, "aspect_ratio": aspect_ratio}
noise_pred = self.unet(
latent_model_input.to(self.device_torch, self.torch_dtype),
encoder_hidden_states=text_embeddings.text_embeds,
encoder_attention_mask=text_embeddings.attention_mask,
timestep=timestep,
added_cond_kwargs=added_cond_kwargs,
return_dict=False,
**kwargs
)[0]
# learned sigma
if self.unet.config.out_channels // 2 == self.unet.config.in_channels:
noise_pred = noise_pred.chunk(2, dim=1)[0]
else:
noise_pred = noise_pred
else:
noise_pred = self.unet(
latent_model_input.to(self.device_torch, self.torch_dtype),
timestep,
encoder_hidden_states=text_embeddings.text_embeds,
**kwargs,
).sample
if do_classifier_free_guidance:
# perform guidance
@@ -1142,6 +1247,20 @@ class StableDiffusion:
dropout_prob=dropout_prob,
)
)
elif self.is_pixart:
embeds, attention_mask = train_tools.encode_prompts_pixart(
self.tokenizer,
self.text_encoder,
prompt,
truncate=not long_prompts,
max_length=max_length,
dropout_prob=dropout_prob
)
return PromptEmbeds(
embeds,
attention_mask=attention_mask,
)
else:
return PromptEmbeds(
train_tools.encode_prompts(
@@ -1489,6 +1608,11 @@ class StableDiffusion:
def save_device_state(self):
# saves the current device state for all modules
# this is useful for when we want to alter the state and restore it
if self.is_pixart:
unet_has_grad = self.unet.proj_out.weight.requires_grad
else:
unet_has_grad = self.unet.conv_in.weight.requires_grad
self.device_state = {
**empty_preset,
'vae': {
@@ -1498,7 +1622,7 @@ class StableDiffusion:
'unet': {
'training': self.unet.training,
'device': self.unet.device,
'requires_grad': self.unet.conv_in.weight.requires_grad,
'requires_grad': unet_has_grad,
},
}
if isinstance(self.text_encoder, list):
@@ -1511,10 +1635,15 @@ class StableDiffusion:
'requires_grad': encoder.text_model.final_layer_norm.weight.requires_grad
})
else:
if isinstance(self.text_encoder, T5EncoderModel):
te_has_grad = self.text_encoder.encoder.block[0].layer[0].SelfAttention.q.weight.requires_grad
else:
te_has_grad = self.text_encoder.text_model.final_layer_norm.weight.requires_grad
self.device_state['text_encoder'] = {
'training': self.text_encoder.training,
'device': self.text_encoder.device,
'requires_grad': self.text_encoder.text_model.final_layer_norm.weight.requires_grad
'requires_grad': te_has_grad
}
if self.adapter is not None:
if isinstance(self.adapter, IPAdapter):

View File

@@ -29,6 +29,7 @@ from diffusers import (
from library.lpw_stable_diffusion import StableDiffusionLongPromptWeightingPipeline
import torch
import re
from transformers import T5Tokenizer, T5EncoderModel
SCHEDULER_LINEAR_START = 0.00085
SCHEDULER_LINEAR_END = 0.0120
@@ -627,6 +628,48 @@ def encode_prompts(
return text_embeddings
def encode_prompts_pixart(
tokenizer: 'T5Tokenizer',
text_encoder: 'T5EncoderModel',
prompts: list[str],
truncate: bool = True,
max_length=None,
dropout_prob=0.0,
):
if max_length is None:
# See Section 3.1. of the paper.
max_length = 120
if dropout_prob > 0.0:
# randomly drop out prompts
prompts = [
prompt if torch.rand(1).item() > dropout_prob else "" for prompt in prompts
]
text_inputs = tokenizer(
prompts,
padding="max_length",
max_length=max_length,
truncation=True,
add_special_tokens=True,
return_tensors="pt",
)
text_input_ids = text_inputs.input_ids
untruncated_ids = tokenizer(prompts, padding="longest", return_tensors="pt").input_ids
if untruncated_ids.shape[-1] >= text_input_ids.shape[-1] and not torch.equal(
text_input_ids, untruncated_ids
):
removed_text = tokenizer.batch_decode(untruncated_ids[:, max_length - 1: -1])
prompt_attention_mask = text_inputs.attention_mask
prompt_attention_mask = prompt_attention_mask.to(text_encoder.device)
prompt_embeds = text_encoder(text_input_ids.to(text_encoder.device), attention_mask=prompt_attention_mask)
return prompt_embeds.last_hidden_state, prompt_attention_mask
# for XL
def get_add_time_ids(
height: int,