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Enable sliced attention computation.
When this option is enabled, the attention module will split the input tensor in slices, to compute attention
in several steps. This is useful to save some memory in exchange for a small speed decrease.
disable_attention_slicing
<
source
>
(
)
Disable sliced attention computation. If enable_attention_slicing was previously invoked, this method will go
back to computing attention in one step.
enable_xformers_memory_efficient_attention
<
source
>
(
attention_op: typing.Optional[typing.Callable] = None
)
Parameters
attention_op (Callable, optional) —
Override the default None operator for use as op argument to the
memory_efficient_attention()
function of xFormers.
Enable memory efficient attention as implemented in xformers.
When this option is enabled, you should observe lower GPU memory usage and a potential speed up at inference
time. Speed up at training time is not guaranteed.
Warning: When Memory Efficient Attention and Sliced attention are both enabled, the Memory Efficient Attention
is used.
Examples:
Copied
>>> import torch
>>> from diffusers import DiffusionPipeline
>>> from xformers.ops import MemoryEfficientAttentionFlashAttentionOp
>>> pipe = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-2-1", torch_dtype=torch.float16)
>>> pipe = pipe.to("cuda")
>>> pipe.enable_xformers_memory_efficient_attention(attention_op=MemoryEfficientAttentionFlashAttentionOp)
>>> # Workaround for not accepting attention shape using VAE for Flash Attention
>>> pipe.vae.enable_xformers_memory_efficient_attention(attention_op=None)
disable_xformers_memory_efficient_attention
<
source
>
(
)
Disable memory efficient attention as implemented in xformers.
enable_sequential_cpu_offload
<
source
>
(
gpu_id = 0
)
Offloads all models to CPU using accelerate, significantly reducing memory usage. When called, unet,
text_encoder, vae and safety checker have their state dicts saved to CPU and then are moved to a
torch.device('meta') and loaded to GPU only when their specific submodule has its forward` method called.
MusicLDM MusicLDM was proposed in MusicLDM: Enhancing Novelty in Text-to-Music Generation Using Beat-Synchronous Mixup Strategies by Ke Chen, Yusong Wu, Haohe Liu, Marianna Nezhurina, Taylor Berg-Kirkpatrick, Shlomo Dubnov.
MusicLDM takes a text prompt as input and predicts the corresponding music sample. Inspired by Stable Diffusion and AudioLDM,
MusicLDM is a text-to-music latent diffusion model (LDM) that learns continuous audio representations from CLAP
latents. MusicLDM is trained on a corpus of 466 hours of music data. Beat-synchronous data augmentation strategies are applied to the music samples, both in the time domain and in the latent space. Using beat-synchronous data augmentation strategies encourages the model to interpolate between the training samples, but ...
Variational Auto-Encoder (VAE) model to encode and decode images to and from latent representations. text_encoder (ClapModel) —
Frozen text-audio embedding model (ClapTextModel), specifically the
laion/clap-htsat-unfused variant. tokenizer (PreTrainedTokenizer) —
A RobertaTokenizer to tokenize text. feature_extractor (ClapFeatureExtractor) —
Feature extractor to compute mel-spectrograms from audio waveforms. unet (UNet2DConditionModel) —
A UNet2DConditionModel to denoise the encoded audio latents. scheduler (SchedulerMixin) —
A scheduler to be used in combination with unet to denoise the encoded audio latents. Can be one of
DDIMScheduler, LMSDiscreteScheduler, or PNDMScheduler. vocoder (SpeechT5HifiGan) —
Vocoder of class SpeechT5HifiGan. Pipeline for text-to-audio generation using MusicLDM. This model inherits from DiffusionPipeline. Check the superclass documentation for the generic methods
implemented for all pipelines (downloading, saving, running on a particular device, etc.). __call__ < source > ( prompt: Union = None audio_length_in_s: Optional = None num_inference_steps: int = 200 guidance_scale: float = 2.0 negative_prompt: Union = None num_waveforms_per_prompt: Optional = 1 eta: float = 0.0 gene...
The prompt or prompts to guide audio generation. If not defined, you need to pass prompt_embeds. audio_length_in_s (int, optional, defaults to 10.24) —
The length of the generated audio sample in seconds. num_inference_steps (int, optional, defaults to 200) —