Full Code of huggingface/diffusion-fast for AI

Repository: huggingface/diffusion-fast
Branch: main
Commit: 7b43ba4a7000
Files: 15
Total size: 52.2 KB

Directory structure:
gitextract_mf9fjc_q/

├── Dockerfile
├── LICENSE
├── Makefile
├── README.md
├── experiment-scripts/
│   ├── run_pixart.sh
│   ├── run_sd.sh
│   └── run_sd_cpu.sh
├── prepare_results.py
├── pyproject.toml
├── run_benchmark.py
├── run_benchmark_pixart.py
├── run_profile.py
└── utils/
    ├── benchmarking_utils.py
    ├── pipeline_utils.py
    └── pipeline_utils_pixart.py

================================================
FILE CONTENTS
================================================

================================================
FILE: Dockerfile
================================================
FROM nvidia/cuda:12.1.0-runtime-ubuntu20.04

ENV DEBIAN_FRONTEND=noninteractive

RUN apt update && \
    apt install -y bash \
    build-essential \
    git \
    git-lfs \
    curl \
    ca-certificates \
    libsndfile1-dev \
    libgl1 \
    python3.8 \
    python3-pip \
    python3.8-venv && \
    rm -rf /var/lib/apt/lists

RUN python3 -m venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"

RUN python3 -m pip install --no-cache-dir --upgrade pip && \
    python3 -m pip install --no-cache-dir --pre torch==2.3.0.dev20231218+cu121 --index-url https://download.pytorch.org/whl/nightly/cu121 && \
    python3 -m pip install --no-cache-dir \
    accelerate \
    transformers \
    peft 

RUN python3 -m pip install  --no-cache-dir diffusers==0.25.0
RUN python3 -m pip install --no-cache-dir git+https://github.com/pytorch-labs/ao@54bcd5a10d0abbe7b0c045052029257099f83fd9

CMD ["/bin/bash"]

================================================
FILE: LICENSE
================================================
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================================================
FILE: Makefile
================================================
check_dirs := .

quality:
	ruff check $(check_dirs)
	ruff format --check $(check_dirs)

style:
	ruff check $(check_dirs) --fix
	ruff format $(check_dirs)



================================================
FILE: README.md
================================================
# Diffusion, fast

Repository for the blog post: [**Accelerating Generative AI Part III: Diffusion, Fast**](https://pytorch.org/blog/accelerating-generative-ai-3/). You can find a run down of the techniques on the [🤗 Diffusers website](https://huggingface.co/docs/diffusers/main/en/optimization/fp16) too. 

<div align="center">

<img src="https://huggingface.co/datasets/sayakpaul/sample-datasets/resolve/main/final-results-diffusion-fast/SDXL%2C_Batch_Size%3A_1%2C_Steps%3A_30.png" width=500>

</div><br>

Check out the Flux edition here: [huggingface/flux-fast](https://github.com/huggingface/flux-fast/).

> [!WARNING]  
> This repository relies on the `torchao` package for all things quantization. Since the first version of this repo, the `torchao` package has changed its APIs significantly. More specifically, [this](https://github.com/huggingface/diffusion-fast/blob/f4fa861422d9819226eb2ceac247c85c3547130d/Dockerfile#L30) version was used to obtain the numbers in this repository. For more updated usage of `torchao`, please refer to the [`diffusers-torchao`](https://github.com/sayakpaul/diffusers-torchao) repository.

Summary of the optimizations:

* Running with the bfloat16 precision
* `scaled_dot_product_attention` (SDPA)
* `torch.compile`
* Combining q,k,v projections for attention computation
* Dynamic int8 quantization 

These techniques are fairly generalizable to other pipelines too, as we show below.

Table of contents:

* [Setup](#setup-🛠️)
* [Running benchmarking experiments](#running-a-benchmarking-experiment-🏎️)
* [Code](#improvements-progressively-📈-📊)
* [Results from other pipelines](#results-from-other-pipelines-🌋)

## Setup 🛠️

We rely on pure PyTorch for the optimizations. You can refer to the [Dockerfile](./Dockerfile) to get the complete development environment setup. 

For hardware, we used an 80GB 400W A100 GPU with its memory clock set to the maximum rate (1593 in our case).

Meanwhile, these optimizations (BFloat16, SDPA, torch.compile, Combining q,k,v projections) can run on CPU platforms as well, and bring 4x latency improvement to Stable Diffusion XL (SDXL) on 4th Gen Intel® Xeon® Scalable processors.

## Running a benchmarking experiment 🏎️

[`run_benchmark.py`](./run_benchmark.py) is the main script for benchmarking the different optimization techniques. After an experiment has been done, you should expect to see two files:

* A `.csv` file with all the benchmarking numbers.
* A `.jpeg` image file corresponding to the experiment. 

Refer to the [`experiment-scripts/run_sd.sh`](./experiment-scripts/run_sd.sh) for some reference experiment commands. 

**Notes on running PixArt-Alpha experiments**:

* Use the [`run_experiment_pixart.py`](./run_benchmark_pixart.py) for this.
* Uninstall the current installation of `diffusers` and re-install it again like so: `pip install git+https://github.com/huggingface/diffusers@fuse-projections-pixart`.
* Refer to the [`experiment-scripts/run_pixart.sh`](./experiment-scripts/run_pixart.sh) script for some reference experiment commands.

_(Support for PixArt-Alpha is experimental.)_

You can use the [`prepare_results.py`](./prepare_results.py) script to generate a consolidated CSV file and a plot to visualize the results from it. This is best used after you have run a couple of benchmarking experiments already and have their corresponding CSV files.

The script also supports CPU platforms, you can refer to the [`experiment-scripts/run_sd_cpu.sh`](./experiment-scripts/run_sd_cpu.sh) for some reference experiment commands. 

To run the script, you need the following dependencies:

* pandas
* matplotlib
* seaborn

## Improvements, progressively 📈 📊

<details>
  <summary>Baseline</summary>

```python
from diffusers import StableDiffusionXLPipeline

# Load the pipeline in full-precision and place its model components on CUDA.
pipe = StableDiffusionXLPipeline.from_pretrained(
    "stabilityai/stable-diffusion-xl-base-1.0"
).to("cuda")

# Run the attention ops without efficiency.
pipe.unet.set_default_attn_processor()
pipe.vae.set_default_attn_processor()

prompt = "Astronaut in a jungle, cold color palette, muted colors, detailed, 8k"
image = pipe(prompt, num_inference_steps=30).images[0]
```

With this, we're at:

<div align="center">

<img src="https://huggingface.co/datasets/sayakpaul/sample-datasets/resolve/main/progressive-acceleration-sdxl/SDXL%2C_Batch_Size%3A_1%2C_Steps%3A_30_0.png" width=500>

</div>

</details>

<details>
  <summary>Bfloat16</summary>

```python
from diffusers import StableDiffusionXLPipeline
import torch

pipe = StableDiffusionXLPipeline.from_pretrained(
	"stabilityai/stable-diffusion-xl-base-1.0", torch_dtype=torch.bfloat16
).to("cuda")

# Run the attention ops without efficiency.
pipe.unet.set_default_attn_processor()
pipe.vae.set_default_attn_processor()

prompt = "Astronaut in a jungle, cold color palette, muted colors, detailed, 8k"
image = pipe(prompt, num_inference_steps=30).images[0]
```

<div align="center">

<img src="https://huggingface.co/datasets/sayakpaul/sample-datasets/resolve/main/progressive-acceleration-sdxl/SDXL%2C_Batch_Size%3A_1%2C_Steps%3A_30_1.png" width=500>

</div>

> 💡 We later ran the experiments in float16 and found out that the recent versions of `torchao` do not incur numerical problems from float16.

</details>

<details>
  <summary>scaled_dot_product_attention</summary>

```python
from diffusers import StableDiffusionXLPipeline
import torch

pipe = StableDiffusionXLPipeline.from_pretrained(
	"stabilityai/stable-diffusion-xl-base-1.0", torch_dtype=torch.bfloat16
).to("cuda")

prompt = "Astronaut in a jungle, cold color palette, muted colors, detailed, 8k"
image = pipe(prompt, num_inference_steps=30).images[0]
```

<div align="center">

<img src="https://huggingface.co/datasets/sayakpaul/sample-datasets/resolve/main/progressive-acceleration-sdxl/SDXL%2C_Batch_Size%3A_1%2C_Steps%3A_30_2.png" width=500>

</div>

</details>

<details>
  <summary>torch.compile</summary><br>

First, configure some compiler flags:

```python
from diffusers import StableDiffusionXLPipeline
import torch

# Set the following compiler flags to make things go brrr.
torch._inductor.config.conv_1x1_as_mm = True
torch._inductor.config.coordinate_descent_tuning = True
torch._inductor.config.epilogue_fusion = False
torch._inductor.config.coordinate_descent_check_all_directions = True
```

Then load the pipeline:

```python
pipe = StableDiffusionXLPipeline.from_pretrained(
    "stabilityai/stable-diffusion-xl-base-1.0", torch_dtype=torch.bfloat16
).to("cuda")
```

Compile and perform inference:

```python
# Compile the UNet and VAE.
pipe.unet.to(memory_format=torch.channels_last)
pipe.vae.to(memory_format=torch.channels_last)
pipe.unet = torch.compile(pipe.unet, mode="max-autotune", fullgraph=True)
pipe.vae.decode = torch.compile(pipe.vae.decode, mode="max-autotune", fullgraph=True)

prompt = "Astronaut in a jungle, cold color palette, muted colors, detailed, 8k"

# First call to `pipe` will be slow, subsequent ones will be faster.
image = pipe(prompt, num_inference_steps=30).images[0]
```

<div align="center">

<img src="https://huggingface.co/datasets/sayakpaul/sample-datasets/resolve/main/progressive-acceleration-sdxl/SDXL%2C_Batch_Size%3A_1%2C_Steps%3A_30_3.png" width=500>

</div>

</details>

<details>
  <summary>Combining attention projection matrices</summary><br>

```python
from diffusers import StableDiffusionXLPipeline
import torch

# Configure the compiler flags.
torch._inductor.config.conv_1x1_as_mm = True
torch._inductor.config.coordinate_descent_tuning = True
torch._inductor.config.epilogue_fusion = False
torch._inductor.config.coordinate_descent_check_all_directions = True

pipe = StableDiffusionXLPipeline.from_pretrained(
    "stabilityai/stable-diffusion-xl-base-1.0", torch_dtype=torch.bfloat16
).to("cuda")

# Combine attention projection matrices.
pipe.fuse_qkv_projections()

# Compile the UNet and VAE.
pipe.unet.to(memory_format=torch.channels_last)
pipe.vae.to(memory_format=torch.channels_last)
pipe.unet = torch.compile(pipe.unet, mode="max-autotune", fullgraph=True)
pipe.vae.decode = torch.compile(pipe.vae.decode, mode="max-autotune", fullgraph=True)

prompt = "Astronaut in a jungle, cold color palette, muted colors, detailed, 8k"

# First call to `pipe` will be slow, subsequent ones will be faster.
image = pipe(prompt, num_inference_steps=30).images[0]
```

<div align="center">

<img src="https://huggingface.co/datasets/sayakpaul/sample-datasets/resolve/main/progressive-acceleration-sdxl/SDXL%2C_Batch_Size%3A_1%2C_Steps%3A_30_4.png" width=500>

</div>

</details>

<details>
  <summary>Dynamic quantization</summary><br>

Start by setting the compiler flags (this time, we have two new):

```python
from diffusers import StableDiffusionXLPipeline
import torch

from torchao.quantization import apply_dynamic_quant, swap_conv2d_1x1_to_linear

# Compiler flags. There are two new.
torch._inductor.config.conv_1x1_as_mm = True
torch._inductor.config.coordinate_descent_tuning = True
torch._inductor.config.epilogue_fusion = False
torch._inductor.config.coordinate_descent_check_all_directions = True
torch._inductor.config.force_fuse_int_mm_with_mul = True
torch._inductor.config.use_mixed_mm = True
```

Then write the filtering functions to apply dynamic quantization:

```python
def dynamic_quant_filter_fn(mod, *args):
    return (
        isinstance(mod, torch.nn.Linear)
        and mod.in_features > 16
        and (mod.in_features, mod.out_features)
        not in [
            (1280, 640),
            (1920, 1280),
            (1920, 640),
            (2048, 1280),
            (2048, 2560),
            (2560, 1280),
            (256, 128),
            (2816, 1280),
            (320, 640),
            (512, 1536),
            (512, 256),
            (512, 512),
            (640, 1280),
            (640, 1920),
            (640, 320),
            (640, 5120),
            (640, 640),
            (960, 320),
            (960, 640),
        ]
    )


def conv_filter_fn(mod, *args):
    return (
        isinstance(mod, torch.nn.Conv2d) and mod.kernel_size == (1, 1) and 128 in [mod.in_channels, mod.out_channels]
    )
```

Then we're rwady for inference:

```python
pipe = StableDiffusionXLPipeline.from_pretrained(
	"stabilityai/stable-diffusion-xl-base-1.0", torch_dtype=torch.bfloat16
).to("cuda")

# Combine attention projection matrices.
pipe.fuse_qkv_projections()

# Change the memory layout.
pipe.unet.to(memory_format=torch.channels_last)
pipe.vae.to(memory_format=torch.channels_last)

# Swap the pointwise convs with linears.
swap_conv2d_1x1_to_linear(pipe.unet, conv_filter_fn)
swap_conv2d_1x1_to_linear(pipe.vae, conv_filter_fn)

# Apply dynamic quantization.
apply_dynamic_quant(pipe.unet, dynamic_quant_filter_fn)
apply_dynamic_quant(pipe.vae, dynamic_quant_filter_fn)

# Compile.
pipe.unet = torch.compile(pipe.unet, mode="max-autotune", fullgraph=True)
pipe.vae.decode = torch.compile(pipe.vae.decode, mode="max-autotune", fullgraph=True)

prompt = "Astronaut in a jungle, cold color palette, muted colors, detailed, 8k"
image = pipe(prompt, num_inference_steps=30).images[0]
```

<div align="center">

<img src="https://huggingface.co/datasets/sayakpaul/sample-datasets/resolve/main/progressive-acceleration-sdxl/SDXL%2C_Batch_Size%3A_1%2C_Steps%3A_30_5.png" width=500>

</div>

</details>

## Results from other pipelines 🌋

<details>
  <summary>SSD-1B</summary>

<div align="center">

<img src="https://huggingface.co/datasets/sayakpaul/sample-datasets/resolve/main/final-results-diffusion-fast/SSD-1B%2C_Batch_Size%3A_1%2C_Steps%3A_30.png" width=500>
<br><sup><a href="https://huggingface.co/segmind/SSD-1B">segmind/SSD-1B</a></sup>

</div>

</details>

<details>
  <summary>SD v1-5</summary>

<div align="center">

<img src="https://huggingface.co/datasets/sayakpaul/sample-datasets/resolve/main/final-results-diffusion-fast/SD_v1-5%2C_Batch_Size%3A_1%2C_Steps%3A_30.png" width=500>
<br><sup><a href="https://huggingface.co/runwayml/stable-diffusion-v1-5">runwayml/stable-diffusion-v1-5</a></sup>

</div>

</details>

<details>
  <summary>Pixart-Alpha</summary>

<div align="center">

<img src="https://huggingface.co/datasets/sayakpaul/sample-datasets/resolve/main/final-results-diffusion-fast/PixArt-%24%5Calpha%24%2C_Batch_Size%3A_1%2C_Steps%3A_30.png" width=500>
<br><sup><a href="https://huggingface.co/PixArt-alpha/PixArt-XL-2-1024-MS">PixArt-alpha/PixArt-XL-2-1024-MS</a></sup>

</div>

</details>


================================================
FILE: experiment-scripts/run_pixart.sh
================================================
#!/bin/bash

# From diffusion-fast source directory.

python run_benchmark_pixart.py --ckpt "PixArt-alpha/PixArt-XL-2-1024-MS" --no_sdpa --no_bf16 && \
python run_benchmark_pixart.py --ckpt "PixArt-alpha/PixArt-XL-2-1024-MS" --compile_transformer --compile_mode=max-autotune --compile_vae --change_comp_config && \
python run_benchmark_pixart.py --ckpt "PixArt-alpha/PixArt-XL-2-1024-MS" --compile_transformer --compile_mode=max-autotune --compile_vae --change_comp_config --enable_fused_projections && \
python run_benchmark_pixart.py --ckpt "PixArt-alpha/PixArt-XL-2-1024-MS" --compile_transformer --compile_mode=max-autotune --compile_vae --enable_fused_projections --do_quant "int8dynamic" --change_comp_config && \
python prepare_results.py --plot_title "PixArt-Alpha, Batch Size: 1, Steps: 30" --final_csv_filename "collated_results.csv"


================================================
FILE: experiment-scripts/run_sd.sh
================================================
#!/bin/bash

# From diffusion-fast source directory.

python run_benchmark.py --no_sdpa --no_bf16 && \
python run_benchmark.py --compile_unet --compile_mode=max-autotune --compile_vae --change_comp_config && \
python run_benchmark.py --compile_unet --compile_mode=max-autotune --compile_vae --change_comp_config --enable_fused_projections && \
python run_benchmark.py --compile_unet --compile_mode=max-autotune --compile_vae --enable_fused_projections --do_quant "int8dynamic" --change_comp_config && \
python prepare_results.py --plot_title "SDXL, Batch Size: 1, Steps: 30" --final_csv_filename "collated_results.csv"


================================================
FILE: experiment-scripts/run_sd_cpu.sh
================================================
#!/bin/bash

# From diffusion-fast source directory.

# Run Diffusion benchmark on CPU platforms.

python run_benchmark.py --no_sdpa --no_bf16 --device=cpu
python run_benchmark.py --compile_unet --compile_vae --device=cpu
python run_benchmark.py --compile_unet --compile_vae --enable_fused_projections --device=cpu


================================================
FILE: prepare_results.py
================================================
import argparse
import glob
import os
import sys

import matplotlib.pyplot as plt
import pandas as pd
import seaborn as sns
from huggingface_hub import upload_file


sys.path.append(".")
from utils.benchmarking_utils import collate_csv  # noqa: E402


REPO_ID = "sayakpaul/sample-datasets"


def prepare_plot(df, args):
    # Drop the columns that are not needed
    columns_to_drop = [
        "batch_size",
        "num_inference_steps",
        "pipeline_cls",
        "ckpt_id",
        "upcast_vae",
        "memory (gbs)",
        "actual_gpu_memory (gbs)",
        "tag",
    ]
    df_filtered = df.drop(columns=columns_to_drop)
    df_filtered[["quant"]] = df_filtered[["do_quant"]].fillna("None")
    df_filtered.drop(columns=["do_quant"], inplace=True)

    # Create a new column to consolidate settings into a readable format
    df_filtered["settings"] = df_filtered.apply(
        lambda row: ", ".join([f"{col}-{row[col]}" for col in df_filtered.columns if col != "time (secs)"]), axis=1
    )
    df_filtered["formatted_settings"] = df_filtered["settings"].str.replace(", ", "\n", regex=False)
    df_filtered.loc[0, "formatted_settings"] = "default"

    # Generating the plot with matplotlib directly for better control
    plt.figure(figsize=(12, 10))
    sns.set_style("whitegrid")

    # Calculate the number of unique settings for bar positions
    n_settings = len(df_filtered["formatted_settings"].unique())
    bar_positions = range(n_settings)

    # Choose a color palette
    palette = sns.color_palette("husl", n_settings)

    # Plot each bar manually
    bar_width = 0.25  # Width of the bars
    for i, setting in enumerate(df_filtered["formatted_settings"].unique()):
        # Filter the dataframe for each setting and get the mean time
        mean_time = df_filtered[df_filtered["formatted_settings"] == setting]["time (secs)"].mean()
        plt.bar(i, mean_time, width=bar_width, align="center", color=palette[i])

        # Add the text above the bars
        plt.text(i, mean_time + 0.01, f"{mean_time:.2f}", ha="center", va="bottom", fontsize=14, fontweight="bold")

    # Set the x-ticks to correspond to the settings
    plt.xticks(bar_positions, df_filtered["formatted_settings"].unique(), rotation=45, ha="right", fontsize=10)

    plt.ylabel("Time in Seconds", fontsize=14, labelpad=15)
    plt.xlabel("Settings", fontsize=14, labelpad=15)
    plt.title(args.plot_title, fontsize=18, fontweight="bold", pad=20)

    # Adding horizontal gridlines for better readability
    plt.grid(axis="y", linestyle="--", linewidth=0.7, alpha=0.7)

    plt.tight_layout()
    plt.subplots_adjust(top=0.9, bottom=0.2)  # Adjust the top and bottom

    plot_path = args.plot_title.replace(" ", "_") + ".png"
    plt.savefig(plot_path, bbox_inches="tight", dpi=300)

    if args.push_to_hub:
        upload_file(repo_id=REPO_ID, path_in_repo=plot_path, path_or_fileobj=plot_path, repo_type="dataset")
        print(
            f"Plot successfully uploaded. Find it here: https://huggingface.co/datasets/{REPO_ID}/blob/main/{args.plot_file_path}"
        )

    # Show the plot
    plt.show()


def main(args):
    all_csvs = sorted(glob.glob(f"{args.base_path}/*.csv"))
    all_csvs = [os.path.join(args.base_path, x) for x in all_csvs]
    is_pixart = "PixArt-alpha" in all_csvs[0]
    collate_csv(all_csvs, args.final_csv_filename, is_pixart=is_pixart)

    if args.push_to_hub:
        upload_file(
            repo_id=REPO_ID,
            path_in_repo=args.final_csv_filename,
            path_or_fileobj=args.final_csv_filename,
            repo_type="dataset",
        )
        print(
            f"CSV successfully uploaded. Find it here: https://huggingface.co/datasets/{REPO_ID}/blob/main/{args.final_csv_filename}"
        )

    if args.plot_title is not None:
        df = pd.read_csv(args.final_csv_filename)
        prepare_plot(df, args)


if __name__ == "__main__":
    parser = argparse.ArgumentParser()
    parser.add_argument("--base_path", type=str, default=".")
    parser.add_argument("--final_csv_filename", type=str, default="collated_results.csv")
    parser.add_argument("--plot_title", type=str, default=None)
    parser.add_argument("--push_to_hub", action="store_true")
    args = parser.parse_args()

    main(args)


================================================
FILE: pyproject.toml
================================================
[tool.ruff]
# Never enforce `E501` (line length violations).
ignore = ["C901", "E501", "E741", "F402", "F823"]
select = ["C", "E", "F", "I", "W"]
line-length = 119

# Ignore import violations in all `__init__.py` files.
[tool.ruff.per-file-ignores]
"__init__.py" = ["E402", "F401", "F403", "F811"]
"src/diffusers/utils/dummy_*.py" = ["F401"]

[tool.ruff.isort]
lines-after-imports = 2
known-first-party = ["diffusers"]

[tool.ruff.format]
# Like Black, use double quotes for strings.
quote-style = "double"

# Like Black, indent with spaces, rather than tabs.
indent-style = "space"

# Like Black, respect magic trailing commas.
skip-magic-trailing-comma = false

# Like Black, automatically detect the appropriate line ending.
line-ending = "auto"

================================================
FILE: run_benchmark.py
================================================
import torch


torch.set_float32_matmul_precision("high")

import sys  # noqa: E402


sys.path.append(".")
from utils.benchmarking_utils import (  # noqa: E402
    benchmark_fn,
    create_parser,
    generate_csv_dict,
    write_to_csv,
)
from utils.pipeline_utils import load_pipeline  # noqa: E402


def run_inference(pipe, args):
    _ = pipe(
        prompt=args.prompt,
        num_inference_steps=args.num_inference_steps,
        num_images_per_prompt=args.batch_size,
    )


def main(args) -> dict:
    pipeline = load_pipeline(
        ckpt=args.ckpt,
        compile_unet=args.compile_unet,
        compile_vae=args.compile_vae,
        no_sdpa=args.no_sdpa,
        no_bf16=args.no_bf16,
        upcast_vae=args.upcast_vae,
        enable_fused_projections=args.enable_fused_projections,
        do_quant=args.do_quant,
        compile_mode=args.compile_mode,
        change_comp_config=args.change_comp_config,
        device=args.device,
    )

    # Warmup.
    run_inference(pipeline, args)
    run_inference(pipeline, args)
    run_inference(pipeline, args)

    time = benchmark_fn(run_inference, pipeline, args)  # in seconds.

    data_dict = generate_csv_dict(
        pipeline_cls=str(pipeline.__class__.__name__),
        args=args,
        time=time,
    )
    img = pipeline(
        prompt=args.prompt,
        num_inference_steps=args.num_inference_steps,
        num_images_per_prompt=args.batch_size,
    ).images[0]

    return data_dict, img


if __name__ == "__main__":
    parser = create_parser()
    args = parser.parse_args()
    print(args)

    data_dict, img = main(args)

    name = (
        args.ckpt.replace("/", "_")
        + f"bf16@{not args.no_bf16}-sdpa@{not args.no_sdpa}-bs@{args.batch_size}-fuse@{args.enable_fused_projections}-upcast_vae@{args.upcast_vae}-steps@{args.num_inference_steps}-unet@{args.compile_unet}-vae@{args.compile_vae}-mode@{args.compile_mode}-change_comp_config@{args.change_comp_config}-do_quant@{args.do_quant}-tag@{args.tag}-device@{args.device}.csv"
    )
    img.save(f'{name.replace(".csv", "")}.jpeg')
    write_to_csv(name, data_dict)


================================================
FILE: run_benchmark_pixart.py
================================================
import torch


torch.set_float32_matmul_precision("high")

import sys  # noqa: E402


sys.path.append(".")
from utils.benchmarking_utils import (  # noqa: E402
    benchmark_fn,
    create_parser,
    generate_csv_dict,
    write_to_csv,
)
from utils.pipeline_utils_pixart import load_pipeline  # noqa: E402


def run_inference(pipe, args):
    _ = pipe(
        prompt=args.prompt,
        num_inference_steps=args.num_inference_steps,
        num_images_per_prompt=args.batch_size,
    )


def main(args) -> dict:
    pipeline = load_pipeline(
        ckpt=args.ckpt,
        compile_transformer=args.compile_transformer,
        compile_vae=args.compile_vae,
        no_sdpa=args.no_sdpa,
        no_bf16=args.no_bf16,
        enable_fused_projections=args.enable_fused_projections,
        do_quant=args.do_quant,
        compile_mode=args.compile_mode,
        change_comp_config=args.change_comp_config,
        device=args.device,
    )

    # Warmup.
    run_inference(pipeline, args)
    run_inference(pipeline, args)
    run_inference(pipeline, args)

    time = benchmark_fn(run_inference, pipeline, args)  # in seconds.

    data_dict = generate_csv_dict(
        pipeline_cls=str(pipeline.__class__.__name__),
        args=args,
        time=time,
    )
    img = pipeline(
        prompt=args.prompt,
        num_inference_steps=args.num_inference_steps,
        num_images_per_prompt=args.batch_size,
    ).images[0]

    return data_dict, img


if __name__ == "__main__":
    parser = create_parser(is_pixart=True)
    args = parser.parse_args()
    print(args)

    data_dict, img = main(args)

    name = (
        args.ckpt.replace("/", "_")
        + f"bf16@{not args.no_bf16}-sdpa@{not args.no_sdpa}-bs@{args.batch_size}-fuse@{args.enable_fused_projections}-upcast_vae@NA-steps@{args.num_inference_steps}-transformer@{args.compile_transformer}-vae@{args.compile_vae}-mode@{args.compile_mode}-change_comp_config@{args.change_comp_config}-do_quant@{args.do_quant}-tag@{args.tag}-device@{args.device}.csv"
    )
    img.save(f"{name}.jpeg")
    write_to_csv(name, data_dict, is_pixart=True)


================================================
FILE: run_profile.py
================================================
import torch


torch.set_float32_matmul_precision("high")

from torch._inductor import config as inductorconfig  # noqa: E402


inductorconfig.triton.unique_kernel_names = True

import functools  # noqa: E402
import sys  # noqa: E402


sys.path.append(".")
from utils.benchmarking_utils import create_parser  # noqa: E402
from utils.pipeline_utils import load_pipeline  # noqa: E402


def profiler_runner(path, fn, *args, **kwargs):
    with torch.profiler.profile(
        activities=[torch.profiler.ProfilerActivity.CPU, torch.profiler.ProfilerActivity.CUDA], record_shapes=True
    ) as prof:
        result = fn(*args, **kwargs)
    prof.export_chrome_trace(path)
    return result


def run_inference(pipe, args):
    _ = pipe(
        prompt=args.prompt,
        num_inference_steps=args.num_inference_steps,
        num_images_per_prompt=args.batch_size,
    )


def main(args) -> dict:
    pipeline = load_pipeline(
        ckpt=args.ckpt,
        compile_unet=args.compile_unet,
        compile_vae=args.compile_vae,
        no_sdpa=args.no_sdpa,
        no_bf16=args.no_bf16,
        upcast_vae=args.upcast_vae,
        enable_fused_projections=args.enable_fused_projections,
        do_quant=args.do_quant,
        compile_mode=args.compile_mode,
        change_comp_config=args.change_comp_config,
        device=args.device,
    )

    # warmup.
    run_inference(pipeline, args)
    run_inference(pipeline, args)

    trace_path = (
        args.ckpt.replace("/", "_")
        + f"bf16@{not args.no_bf16}-sdpa@{not args.no_sdpa}-bs@{args.batch_size}-fuse@{args.enable_fused_projections}-upcast_vae@{args.upcast_vae}-steps@{args.num_inference_steps}-unet@{args.compile_unet}-vae@{args.compile_vae}-mode@{args.compile_mode}-change_comp_config@{args.change_comp_config}-do_quant@{args.do_quant}-device@{args.device}.json"
    )
    runner = functools.partial(profiler_runner, trace_path)
    with torch.autograd.profiler.record_function("sdxl-brrr"):
        runner(run_inference, pipeline, args)
    return trace_path


if __name__ == "__main__":
    parser = create_parser()
    args = parser.parse_args()

    if not args.compile_unet:
        args.compile_mode = "NA"

    trace_path = main(args)
    print(f"Trace generated at: {trace_path}")


================================================
FILE: utils/benchmarking_utils.py
================================================
import argparse
import copy
import csv
import gc
from typing import Dict, List, Union

import torch
import torch.utils.benchmark as benchmark


BENCHMARK_FIELDS = [
    "pipeline_cls",
    "ckpt_id",
    "bf16",
    "sdpa",
    "fused_qkv_projections",
    "upcast_vae",
    "batch_size",
    "num_inference_steps",
    "compile_unet",
    "compile_vae",
    "compile_mode",
    "change_comp_config",
    "do_quant",
    "time (secs)",
    "memory (gbs)",
    "actual_gpu_memory (gbs)",
    "tag",
]


def create_parser(is_pixart=False):
    """Creates CLI args parser."""
    parser = argparse.ArgumentParser()

    parser.add_argument("--ckpt", type=str, default="stabilityai/stable-diffusion-xl-base-1.0")
    parser.add_argument("--prompt", type=str, default="ghibli style, a fantasy landscape with castles")
    parser.add_argument("--no_bf16", action="store_true")
    parser.add_argument("--no_sdpa", action="store_true")
    parser.add_argument("--batch_size", type=int, default=1)
    parser.add_argument("--num_inference_steps", type=int, default=30)
    parser.add_argument("--enable_fused_projections", action="store_true")

    if not is_pixart:
        parser.add_argument("--upcast_vae", action="store_true")

    if is_pixart:
        parser.add_argument("--compile_transformer", action="store_true")
    else:
        parser.add_argument("--compile_unet", action="store_true")

    parser.add_argument("--compile_vae", action="store_true")
    parser.add_argument("--compile_mode", type=str, default=None, choices=["reduce-overhead", "max-autotune"])
    parser.add_argument("--change_comp_config", action="store_true")
    parser.add_argument("--do_quant", type=str, default=None)
    parser.add_argument("--tag", type=str, default="")
    parser.add_argument("--device", type=str, choices=["cuda", "cpu"], default="cuda")
    return parser


def flush():
    """Wipes off memory."""
    gc.collect()
    torch.cuda.empty_cache()
    torch.cuda.reset_max_memory_allocated()
    torch.cuda.reset_peak_memory_stats()


def bytes_to_giga_bytes(bytes):
    return f"{(bytes / 1024 / 1024 / 1024):.3f}"


def benchmark_fn(f, *args, **kwargs):
    t0 = benchmark.Timer(
        stmt="f(*args, **kwargs)",
        globals={"args": args, "kwargs": kwargs, "f": f},
        num_threads=torch.get_num_threads(),
    )
    return f"{(t0.blocked_autorange().mean):.3f}"


def generate_csv_dict(pipeline_cls: str, args, time: float) -> Dict[str, Union[str, bool, float]]:
    """Packs benchmarking data into a dictionary for latter serialization."""
    data_dict = {
        "pipeline_cls": pipeline_cls,
        "ckpt_id": args.ckpt,
        "bf16": not args.no_bf16,
        "sdpa": not args.no_sdpa,
        "fused_qkv_projections": args.enable_fused_projections,
        "upcast_vae": "NA" if "PixArt" in pipeline_cls else args.upcast_vae,
        "batch_size": args.batch_size,
        "num_inference_steps": args.num_inference_steps,
        "compile_unet": args.compile_transformer if "PixArt" in pipeline_cls else args.compile_unet,
        "compile_vae": args.compile_vae,
        "compile_mode": args.compile_mode,
        "change_comp_config": args.change_comp_config,
        "do_quant": args.do_quant,
        "time (secs)": time,
        "tag": args.tag,
    }
    if args.device == "cuda":
        memory = bytes_to_giga_bytes(torch.cuda.max_memory_allocated())  # in GBs.
        TOTAL_GPU_MEMORY = torch.cuda.get_device_properties(0).total_memory / (1024**3)
        data_dict["memory (gbs)"] = memory
        data_dict["actual_gpu_memory (gbs)"] = f"{(TOTAL_GPU_MEMORY):.3f}"
    if "PixArt" in pipeline_cls:
        data_dict["compile_transformer"] = data_dict.pop("compile_unet")
    return data_dict


def write_to_csv(file_name: str, data_dict: Dict[str, Union[str, bool, float]], is_pixart=False):
    """Serializes a dictionary into a CSV file."""
    fields_copy = copy.deepcopy(BENCHMARK_FIELDS)
    fields = BENCHMARK_FIELDS
    if is_pixart:
        i = BENCHMARK_FIELDS.index("compile_unet")
        fields_copy[i] = "compile_transformer"
        fields = fields_copy
    with open(file_name, mode="w", newline="") as csvfile:
        writer = csv.DictWriter(csvfile, fieldnames=fields)
        writer.writeheader()
        writer.writerow(data_dict)


def collate_csv(input_files: List[str], output_file: str, is_pixart=False):
    """Collates multiple identically structured CSVs into a single CSV file."""
    fields_copy = copy.deepcopy(BENCHMARK_FIELDS)
    fields = BENCHMARK_FIELDS
    if is_pixart:
        i = BENCHMARK_FIELDS.index("compile_unet")
        fields_copy[i] = "compile_transformer"
        fields = fields_copy
    with open(output_file, mode="w", newline="") as outfile:
        writer = csv.DictWriter(outfile, fieldnames=fields)
        writer.writeheader()

        for file in input_files:
            with open(file, mode="r") as infile:
                reader = csv.DictReader(infile)
                for row in reader:
                    writer.writerow(row)


================================================
FILE: utils/pipeline_utils.py
================================================
import torch
from torchao.quantization import (
    apply_dynamic_quant,
    change_linear_weights_to_int4_woqtensors,
    change_linear_weights_to_int8_woqtensors,
    swap_conv2d_1x1_to_linear,
)

from diffusers import AutoencoderKL, DiffusionPipeline, DPMSolverMultistepScheduler


PROMPT = "ghibli style, a fantasy landscape with castles"


def dynamic_quant_filter_fn(mod, *args):
    return (
        isinstance(mod, torch.nn.Linear)
        and mod.in_features > 16
        and (mod.in_features, mod.out_features)
        not in [
            (1280, 640),
            (1920, 1280),
            (1920, 640),
            (2048, 1280),
            (2048, 2560),
            (2560, 1280),
            (256, 128),
            (2816, 1280),
            (320, 640),
            (512, 1536),
            (512, 256),
            (512, 512),
            (640, 1280),
            (640, 1920),
            (640, 320),
            (640, 5120),
            (640, 640),
            (960, 320),
            (960, 640),
        ]
    )


def conv_filter_fn(mod, *args):
    return (
        isinstance(mod, torch.nn.Conv2d) and mod.kernel_size == (1, 1) and 128 in [mod.in_channels, mod.out_channels]
    )


def load_pipeline(
    ckpt: str,
    compile_unet: bool,
    compile_vae: bool,
    no_sdpa: bool,
    no_bf16: bool,
    upcast_vae: bool,
    enable_fused_projections: bool,
    do_quant: bool,
    compile_mode: str,
    change_comp_config: bool,
    device: str,
):
    """Loads the SDXL pipeline."""

    if do_quant and not compile_unet:
        raise ValueError("Compilation for UNet must be enabled when quantizing.")
    if do_quant and not compile_vae:
        raise ValueError("Compilation for VAE must be enabled when quantizing.")

    dtype = torch.float32 if no_bf16 else torch.bfloat16
    print(f"Using dtype: {dtype}")

    if ckpt != "runwayml/stable-diffusion-v1-5":
        pipe = DiffusionPipeline.from_pretrained(ckpt, torch_dtype=dtype, use_safetensors=True)
    else:
        pipe = DiffusionPipeline.from_pretrained(ckpt, torch_dtype=dtype, use_safetensors=True, safety_checker=None)
        # As the default scheduler of SD v1-5 doesn't have sigmas device placement
        # (https://github.com/huggingface/diffusers/pull/6173)
        pipe.scheduler = DPMSolverMultistepScheduler.from_config(pipe.scheduler.config)

    if not upcast_vae and ckpt != "runwayml/stable-diffusion-v1-5":
        print("Using a more numerically stable VAE.")
        pipe.vae = AutoencoderKL.from_pretrained("madebyollin/sdxl-vae-fp16-fix", torch_dtype=dtype)

    if enable_fused_projections:
        print("Enabling fused QKV projections for both UNet and VAE.")
        pipe.fuse_qkv_projections()

    if upcast_vae and ckpt != "runwayml/stable-diffusion-v1-5":
        print("Upcasting VAE.")
        pipe.upcast_vae()

    if no_sdpa:
        print("Using vanilla attention.")
        pipe.unet.set_default_attn_processor()
        pipe.vae.set_default_attn_processor()

    if device == "cuda":
        pipe = pipe.to("cuda")

    if compile_unet:
        pipe.unet.to(memory_format=torch.channels_last)
        print("Compile UNet.")
        swap_conv2d_1x1_to_linear(pipe.unet, conv_filter_fn)
        if compile_mode == "max-autotune" and change_comp_config:
            torch._inductor.config.conv_1x1_as_mm = True
            torch._inductor.config.coordinate_descent_tuning = True
            torch._inductor.config.epilogue_fusion = False
            torch._inductor.config.coordinate_descent_check_all_directions = True

        if do_quant:
            print("Apply quantization to UNet.")
            if do_quant == "int4weightonly":
                change_linear_weights_to_int4_woqtensors(pipe.unet)
            elif do_quant == "int8weightonly":
                change_linear_weights_to_int8_woqtensors(pipe.unet)
            elif do_quant == "int8dynamic":
                apply_dynamic_quant(pipe.unet, dynamic_quant_filter_fn)
            else:
                raise ValueError(f"Unknown do_quant value: {do_quant}.")
            torch._inductor.config.force_fuse_int_mm_with_mul = True
            torch._inductor.config.use_mixed_mm = True

        pipe.unet = torch.compile(pipe.unet, mode=compile_mode, fullgraph=True)

    if compile_vae:
        pipe.vae.to(memory_format=torch.channels_last)
        print("Compile VAE.")
        swap_conv2d_1x1_to_linear(pipe.vae, conv_filter_fn)

        if compile_mode == "max-autotune" and change_comp_config:
            torch._inductor.config.conv_1x1_as_mm = True
            torch._inductor.config.coordinate_descent_tuning = True
            torch._inductor.config.epilogue_fusion = False
            torch._inductor.config.coordinate_descent_check_all_directions = True

        if do_quant:
            print("Apply quantization to VAE.")
            if do_quant == "int4weightonly":
                change_linear_weights_to_int4_woqtensors(pipe.vae)
            elif do_quant == "int8weightonly":
                change_linear_weights_to_int8_woqtensors(pipe.vae)
            elif do_quant == "int8dynamic":
                apply_dynamic_quant(pipe.vae, dynamic_quant_filter_fn)
            else:
                raise ValueError(f"Unknown do_quant value: {do_quant}.")
            torch._inductor.config.force_fuse_int_mm_with_mul = True
            torch._inductor.config.use_mixed_mm = True

        pipe.vae.decode = torch.compile(pipe.vae.decode, mode=compile_mode, fullgraph=True)

    pipe.set_progress_bar_config(disable=True)
    return pipe


================================================
FILE: utils/pipeline_utils_pixart.py
================================================
import torch
from torchao.quantization import (
    apply_dynamic_quant,
    change_linear_weights_to_int4_woqtensors,
    change_linear_weights_to_int8_woqtensors,
    swap_conv2d_1x1_to_linear,
)

from diffusers import DiffusionPipeline


def dynamic_quant_filter_fn(mod, *args):
    return (
        isinstance(mod, torch.nn.Linear)
        and mod.in_features > 16
        and (mod.in_features, mod.out_features)
        not in [
            (1280, 640),
            (1920, 1280),
            (1920, 640),
            (2048, 1280),
            (2048, 2560),
            (2560, 1280),
            (256, 128),
            (2816, 1280),
            (320, 640),
            (512, 1536),
            (512, 256),
            (512, 512),
            (640, 1280),
            (640, 1920),
            (640, 320),
            (640, 5120),
            (640, 640),
            (960, 320),
            (960, 640),
        ]
    )


def conv_filter_fn(mod, *args):
    return (
        isinstance(mod, torch.nn.Conv2d) and mod.kernel_size == (1, 1) and 128 in [mod.in_channels, mod.out_channels]
    )


def load_pipeline(
    ckpt: str,
    compile_transformer: bool,
    compile_vae: bool,
    no_sdpa: bool,
    no_bf16: bool,
    enable_fused_projections: bool,
    do_quant: bool,
    compile_mode: str,
    change_comp_config: bool,
    device: str,
):
    """Loads the PixArt-Alpha pipeline."""

    if do_quant and not compile_transformer:
        raise ValueError("Compilation for Transformer must be enabled when quantizing.")
    if do_quant and not compile_vae:
        raise ValueError("Compilation for VAE must be enabled when quantizing.")

    dtype = torch.float32 if no_bf16 else torch.bfloat16
    print(f"Using dtype: {dtype}")
    pipe = DiffusionPipeline.from_pretrained(ckpt, torch_dtype=dtype)

    if enable_fused_projections:
        print("Enabling fused QKV projections for both Transformer and VAE.")
        pipe.fuse_qkv_projections()

    if no_sdpa:
        print("Using vanilla attention.")
        pipe.transformer.set_default_attn_processor()
        pipe.vae.set_default_attn_processor()

    if device == "cuda":
        pipe = pipe.to("cuda")

    if compile_transformer:
        pipe.transformer.to(memory_format=torch.channels_last)
        print("Compile Transformer")
        swap_conv2d_1x1_to_linear(pipe.transformer, conv_filter_fn)
        if compile_mode == "max-autotune" and change_comp_config:
            torch._inductor.config.conv_1x1_as_mm = True
            torch._inductor.config.coordinate_descent_tuning = True
            torch._inductor.config.epilogue_fusion = False
            torch._inductor.config.coordinate_descent_check_all_directions = True

        if do_quant:
            print("Apply quantization to Transformer")
            if do_quant == "int4weightonly":
                change_linear_weights_to_int4_woqtensors(pipe.transformer)
            elif do_quant == "int8weightonly":
                change_linear_weights_to_int8_woqtensors(pipe.transformer)
            elif do_quant == "int8dynamic":
                apply_dynamic_quant(pipe.transformer, dynamic_quant_filter_fn)
            else:
                raise ValueError(f"Unknown do_quant value: {do_quant}.")
            torch._inductor.config.force_fuse_int_mm_with_mul = True
            torch._inductor.config.use_mixed_mm = True

        pipe.transformer = torch.compile(pipe.transformer, mode=compile_mode, fullgraph=True)

    if compile_vae:
        pipe.vae.to(memory_format=torch.channels_last)
        print("Compile VAE")
        swap_conv2d_1x1_to_linear(pipe.vae, conv_filter_fn)

        if compile_mode == "max-autotune" and change_comp_config:
            torch._inductor.config.conv_1x1_as_mm = True
            torch._inductor.config.coordinate_descent_tuning = True
            torch._inductor.config.epilogue_fusion = False
            torch._inductor.config.coordinate_descent_check_all_directions = True

        if do_quant:
            print("Apply quantization to VAE")
            if do_quant == "int4weightonly":
                change_linear_weights_to_int4_woqtensors(pipe.vae)
            elif do_quant == "int8weightonly":
                change_linear_weights_to_int8_woqtensors(pipe.vae)
            elif do_quant == "int8dynamic":
                apply_dynamic_quant(pipe.vae, dynamic_quant_filter_fn)
            else:
                raise ValueError(f"Unknown do_quant value: {do_quant}.")
            torch._inductor.config.force_fuse_int_mm_with_mul = True
            torch._inductor.config.use_mixed_mm = True

        pipe.vae.decode = torch.compile(pipe.vae.decode, mode=compile_mode, fullgraph=True)

    pipe.set_progress_bar_config(disable=True)
    return pipe