diffusers/v0.22.2/ko/_app/immutable/nodes/30.60f282ec.js

import{s as Ca,o as Ia,n as ha}from"../chunks/scheduler.6e0d5ff7.js";import{S as oa,i as ra,g as M,s as t,r as p,E as ga,h as U,f as a,c as n,j as ia,u as T,x as J,k as ma,y as Va,a as e,v as y,d as j,t as c,w}from"../chunks/index.d7c1b260.js";import{T as ba}from"../chunks/Tip.c000e27b.js";import{C as i}from"../chunks/CodeBlock.09a08494.js";import{D as ua}from"../chunks/DocNotebookDropdown.0647ce65.js";import{H as ul}from"../chunks/Heading.30a009b0.js";function Qa(fl){let m,h='💡 이 학습 튜토리얼은 <a href="https://colab.research.google.com/github/huggingface/notebooks/blob/main/diffusers/training_example.ipynb" rel="nofollow">Training with 🧨 Diffusers</a> 노트북 기반으로 합니다. Diffusion 모델의 작동 방식 및 자세한 내용은 노트북을 확인하세요!';return{c(){m=M("p"),m.innerHTML=h},l(C){m=U(C,"P",{"data-svelte-h":!0}),J(m)!=="svelte-129ibgh"&&(m.innerHTML=h)},m(C,Ql){e(C,m,Ql)},p:ha,d(C){C&&a(m)}}}function da(fl){let m,h,C,Ql,o,Bl,r,Al,g,Fs='Unconditional 이미지 생성은 학습에 사용된 데이터셋과 유사한 이미지를 생성하는 diffusion 모델에서 인기 있는 어플리케이션입니다. 일반적으로, 가장 좋은 결과는 특정 데이터셋에 사전 훈련된 모델을 파인튜닝하는 것으로 얻을 수 있습니다. 이 <a href="https://huggingface.co/search/full-text?q=unconditional-image-generation&amp;type=model" rel="nofollow">허브</a>에서 이러한 많은 체크포인트를 찾을 수 있지만, 만약 마음에 드는 체크포인트를 찾지 못했다면, 언제든지 스스로 학습할 수 있습니다!',Rl,V,_s='이 튜토리얼은 나만의 🦋 나비 🦋를 생성하기 위해 <a href="https://huggingface.co/datasets/huggan/smithsonian_butterflies_subset" rel="nofollow">Smithsonian Butterflies</a> 데이터셋의 하위 집합에서 <code>UNet2DModel</code> 모델을 학습하는 방법을 가르쳐줄 것입니다.',kl,I,Zl,b,Xs='시작 전에, 🤗 Datasets을 불러오고 전처리하기 위해 데이터셋이 설치되어 있는지 다수 GPU에서 학습을 간소화하기 위해 🤗 Accelerate 가 설치되어 있는지 확인하세요. 그 후 학습 메트릭을 시각화하기 위해 <a href="https://www.tensorflow.org/tensorboard" rel="nofollow">TensorBoard</a>를 또한 설치하세요. (또한 학습 추적을 위해 <a href="https://docs.wandb.ai/" rel="nofollow">Weights &amp; Biases</a>를 사용할 수 있습니다.)',El,u,Gl,Q,Ws='커뮤니티에 모델을 공유할 것을 권장하며, 이를 위해서 Hugging Face 계정에 로그인을 해야 합니다. (계정이 없다면 <a href="https://hf.co/join" rel="nofollow">여기</a>에서 만들 수 있습니다.) 노트북에서 로그인할 수 있으며 메시지가 표시되면 토큰을 입력할 수 있습니다.',Fl,d,_l,f,Ds="또는 터미널로 로그인할 수 있습니다:",Xl,B,Wl,A,Ns='모델 체크포인트가 상당히 크기 때문에 <a href="https://git-lfs.com/" rel="nofollow">Git-LFS</a>에서 대용량 파일의 버전 관리를 할 수 있습니다.',Dl,R,Nl,k,zl,Z,zs="편의를 위해 학습 파라미터들을 포함한 <code>TrainingConfig</code> 클래스를 생성합니다 (자유롭게 조정 가능):",Sl,E,$l,G,Yl,F,Ss='🤗 Datasets 라이브러리와 <a href="https://huggingface.co/datasets/huggan/smithsonian_butterflies_subset" rel="nofollow">Smithsonian Butterflies</a> 데이터셋을 쉽게 불러올 수 있습니다.',vl,_,Ol,X,$s='💡<a href="https://huggingface.co/huggan" rel="nofollow">HugGan Community Event</a> 에서 추가의 데이터셋을 찾거나 로컬의 <a href="https://huggingface.co/docs/datasets/image_dataset#imagefolder" rel="nofollow"><code>ImageFolder</code></a>를 만듦으로써 나만의 데이터셋을 사용할 수 있습니다. HugGan Community Event 에 가져온 데이터셋의 경우 리포지토리의 id로 <code>config.dataset_name</code> 을 설정하고, 나만의 이미지를 사용하는 경우 <code>imagefolder</code> 를 설정합니다.',xl,W,Ys='🤗 Datasets은 <code>Image</code> 기능을 사용해 자동으로 이미지 데이터를 디코딩하고 <a href="https://pillow.readthedocs.io/en/stable/reference/Image.html" rel="nofollow"><code>PIL.Image</code></a>로 불러옵니다. 이를 시각화 해보면:',Hl,D,Ll,N,vs='<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/butterflies_ds.png"/>',ql,z,Os="이미지는 모두 다른 사이즈이기 때문에, 우선 전처리가 필요합니다:",Kl,S,xs="<li><code>Resize</code> 는 <code>config.image_size</code> 에 정의된 이미지 사이즈로 변경합니다.</li> <li><code>RandomHorizontalFlip</code> 은 랜덤적으로 이미지를 미러링하여 데이터셋을 보강합니다.</li> <li><code>Normalize</code> 는 모델이 예상하는 [-1, 1] 범위로 픽셀 값을 재조정 하는데 중요합니다.</li>",Pl,$,ls,Y,Hs="학습 도중에 <code>preprocess</code> 함수를 적용하려면 🤗 Datasets의 <code>set_transform</code> 방법이 사용됩니다.",ss,v,as,O,Ls='이미지의 크기가 조정되었는지 확인하기 위해 이미지를 다시 시각화해보세요. 이제 <a href="https://pytorch.org/docs/stable/data#torch.utils.data.DataLoader" rel="nofollow">DataLoader</a>에 데이터셋을 포함해 학습할 준비가 되었습니다!',es,x,ts,H,ns,L,qs="🧨 Diffusers에 사전학습된 모델들은 모델 클래스에서 원하는 파라미터로 쉽게 생성할 수 있습니다. 예를 들어, <code>UNet2DModel</code>를 생성하려면:",Ms,q,Us,K,Ks="샘플의 이미지 크기와 모델 출력 크기가 맞는지 빠르게 확인하기 위한 좋은 아이디어가 있습니다:",Js,P,ps,ll,Ps="훌륭해요! 다음, 이미지에 약간의 노이즈를 더하기 위해 스케줄러가 필요합니다.",Ts,sl,ys,al,la="스케줄러는 모델을 학습 또는 추론에 사용하는지에 따라 다르게 작동합니다. 추론시에, 스케줄러는 노이즈로부터 이미지를 생성합니다. 학습시 스케줄러는 diffusion 과정에서의 특정 포인트로부터 모델의 출력 또는 샘플을 가져와 <em>노이즈 스케줄</em> 과 <em>업데이트 규칙</em>에 따라 이미지에 노이즈를 적용합니다.",js,el,sa="<code>DDPMScheduler</code>를 보면 이전으로부터 <code>sample_image</code>에 랜덤한 노이즈를 더하는 <code>add_noise</code> 메서드를 사용합니다:",cs,tl,ws,nl,aa='<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/noisy_butterfly.png"/>',is,Ml,ea="모델의 학습 목적은 이미지에 더해진 노이즈를 예측하는 것입니다. 이 단계에서 손실은 다음과 같이 계산될 수 있습니다:",ms,Ul,Cs,Jl,Is,pl,ta="지금까지, 모델 학습을 시작하기 위해 많은 부분을 갖추었으며 이제 남은 것은 모든 것을 조합하는 것입니다.",hs,Tl,na="우선 옵티마이저(optimizer)와 학습률 스케줄러(learning rate scheduler)가 필요할 것입니다:",os,yl,rs,jl,Ma="그 후, 모델을 평가하는 방법이 필요합니다. 평가를 위해, <code>DDPMPipeline</code>을 사용해 배치의 이미지 샘플들을 생성하고 그리드 형태로 저장할 수 있습니다:",gs,cl,Vs,wl,Ua="TensorBoard에 로깅, 그래디언트 누적 및 혼합 정밀도 학습을 쉽게 수행하기 위해 🤗 Accelerate를 학습 루프에 함께 앞서 말한 모든 구성 정보들을 묶어 진행할 수 있습니다. 허브에 모델을 업로드 하기 위해 리포지토리 이름 및 정보를 가져오기 위한 함수를 작성하고 허브에 업로드할 수 있습니다.",bs,il,Ja="💡아래의 학습 루프는 어렵고 길어 보일 수 있지만, 나중에 한 줄의 코드로 학습을 한다면 그만한 가치가 있을 것입니다! 만약 기다리지 못하고 이미지를 생성하고 싶다면, 아래 코드를 자유롭게 붙여넣고 작동시키면 됩니다. 🤗",us,ml,Qs,Cl,pa="휴, 코드가 꽤 많았네요! 하지만 🤗 Accelerate의 <code>notebook_launcher</code> 함수와 학습을 시작할 준비가 되었습니다. 함수에 학습 루프, 모든 학습 인수, 학습에 사용할 프로세스 수(사용 가능한 GPU의 수를 변경할 수 있음)를 전달합니다:",ds,Il,fs,hl,Ta="한번 학습이 완료되면, diffusion 모델로 생성된 최종 🦋이미지🦋를 확인해보길 바랍니다!",Bs,ol,As,rl,ya='<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/butterflies_final.png"/>',Rs,gl,ks,Vl,ja='Unconditional 이미지 생성은 학습될 수 있는 작업 중 하나의 예시입니다. 다른 작업과 학습 방법은 <a href="../training/overview">🧨 Diffusers 학습 예시</a> 페이지에서 확인할 수 있습니다. 다음은 학습할 수 있는 몇 가지 예시입니다:',Zs,bl,ca='<li><a href="../training/text_inversion">Textual Inversion</a>, 특정 시각적 개념을 학습시켜 생성된 이미지에 통합시키는 알고리즘입니다.</li> <li><a href="../training/dreambooth">DreamBooth</a>, 주제에 대한 몇 가지 입력 이미지들이 주어지면 주제에 대한 개인화된 이미지를 생성하기 위한 기술입니다.</li> <li><a href="../training/text2image">Guide</a> 데이터셋에 Stable Diffusion 모델을 파인튜닝하는 방법입니다.</li> <li><a href="../training/lora">Guide</a>  LoRA를 사용해 매우 큰 모델을 빠르게 파인튜닝하기 위한 메모리 효율적인 기술입니다.</li>',Es,dl,Gs;return o=new ua({props:{classNames:"absolute z-10 right-0 top-0",options:[{label:"Mixed",value:"https://colab.research.google.com/github/huggingface/notebooks/blob/main/diffusers_doc/ko/basic_training.ipynb"},{label:"PyTorch",value:"https://colab.research.google.com/github/huggingface/notebooks/blob/main/diffusers_doc/ko/pytorch/basic_training.ipynb"},{label:"TensorFlow",value:"https://colab.research.google.com/github/huggingface/notebooks/blob/main/diffusers_doc/ko/tensorflow/basic_training.ipynb"},{label:"Mixed",value:"https://studiolab.sagemaker.aws/import/github/huggingface/notebooks/blob/main/diffusers_doc/ko/basic_training.ipynb"},{label:"PyTorch",value:"https://studiolab.sagemaker.aws/import/github/huggingface/notebooks/blob/main/diffusers_doc/ko/pytorch/basic_training.ipynb"},{label:"TensorFlow",value:"https://studiolab.sagemaker.aws/import/github/huggingface/notebooks/blob/main/diffusers_doc/ko/tensorflow/basic_training.ipynb"}]}}),r=new ul({props:{title:"Diffusion 모델을 학습하기",local:"diffusion-모델을-학습하기",headingTag:"h1"}}),I=new ba({props:{$$slots:{default:[Qa]},$$scope:{ctx:fl}}}),u=new i({props:{code:"IXBpcCUyMGluc3RhbGwlMjBkaWZmdXNlcnMlNUJ0cmFpbmluZyU1RA==",highlighted:"!pip install diffusers[training]",wrap:!1}}),d=new i({props:{code:"ZnJvbSUyMGh1Z2dpbmdmYWNlX2h1YiUyMGltcG9ydCUyMG5vdGVib29rX2xvZ2luJTBBJTBBbm90ZWJvb2tfbG9naW4oKQ==",highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> huggingface_hub <span class="hljs-keyword">import</span> notebook_login

<span class="hljs-meta">&gt;&gt;&gt; </span>notebook_login()`,wrap:!1}}),B=new i({props:{code:"aHVnZ2luZ2ZhY2UtY2xpJTIwbG9naW4=",highlighted:"huggingface-cli login",wrap:!1}}),R=new i({props:{code:"IXN1ZG8lMjBhcHQlMjAtcXElMjBpbnN0YWxsJTIwZ2l0LWxmcyUwQSFnaXQlMjBjb25maWclMjAtLWdsb2JhbCUyMGNyZWRlbnRpYWwuaGVscGVyJTIwc3RvcmU=",highlighted:`!sudo apt -qq install git-lfs
!git config --global credential.helper store`,wrap:!1}}),k=new ul({props:{title:"학습 구성",local:"학습-구성",headingTag:"h2"}}),E=new i({props:{code:"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",highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> dataclasses <span class="hljs-keyword">import</span> dataclass


<span class="hljs-meta">&gt;&gt;&gt; </span>@dataclass
<span class="hljs-meta">... </span><span class="hljs-keyword">class</span> <span class="hljs-title class_">TrainingConfig</span>:
<span class="hljs-meta">... </span>    image_size = <span class="hljs-number">128</span>  <span class="hljs-comment"># 생성되는 이미지 해상도</span>
<span class="hljs-meta">... </span>    train_batch_size = <span class="hljs-number">16</span>
<span class="hljs-meta">... </span>    eval_batch_size = <span class="hljs-number">16</span>  <span class="hljs-comment"># 평가 동안에 샘플링할 이미지 수</span>
<span class="hljs-meta">... </span>    num_epochs = <span class="hljs-number">50</span>
<span class="hljs-meta">... </span>    gradient_accumulation_steps = <span class="hljs-number">1</span>
<span class="hljs-meta">... </span>    learning_rate = <span class="hljs-number">1e-4</span>
<span class="hljs-meta">... </span>    lr_warmup_steps = <span class="hljs-number">500</span>
<span class="hljs-meta">... </span>    save_image_epochs = <span class="hljs-number">10</span>
<span class="hljs-meta">... </span>    save_model_epochs = <span class="hljs-number">30</span>
<span class="hljs-meta">... </span>    mixed_precision = <span class="hljs-string">&quot;fp16&quot;</span>  <span class="hljs-comment"># \`no\`는 float32, 자동 혼합 정밀도를 위한 \`fp16\`</span>
<span class="hljs-meta">... </span>    output_dir = <span class="hljs-string">&quot;ddpm-butterflies-128&quot;</span>  <span class="hljs-comment"># 로컬 및 HF Hub에 저장되는 모델명</span>

<span class="hljs-meta">... </span>    push_to_hub = <span class="hljs-literal">True</span>  <span class="hljs-comment"># 저장된 모델을 HF Hub에 업로드할지 여부</span>
<span class="hljs-meta">... </span>    hub_private_repo = <span class="hljs-literal">False</span>
<span class="hljs-meta">... </span>    overwrite_output_dir = <span class="hljs-literal">True</span>  <span class="hljs-comment"># 노트북을 다시 실행할 때 이전 모델에 덮어씌울지</span>
<span class="hljs-meta">... </span>    seed = <span class="hljs-number">0</span>


<span class="hljs-meta">&gt;&gt;&gt; </span>config = TrainingConfig()`,wrap:!1}}),G=new ul({props:{title:"데이터셋 불러오기",local:"데이터셋-불러오기",headingTag:"h2"}}),_=new i({props:{code:"ZnJvbSUyMGRhdGFzZXRzJTIwaW1wb3J0JTIwbG9hZF9kYXRhc2V0JTBBJTBBY29uZmlnLmRhdGFzZXRfbmFtZSUyMCUzRCUyMCUyMmh1Z2dhbiUyRnNtaXRoc29uaWFuX2J1dHRlcmZsaWVzX3N1YnNldCUyMiUwQWRhdGFzZXQlMjAlM0QlMjBsb2FkX2RhdGFzZXQoY29uZmlnLmRhdGFzZXRfbmFtZSUyQyUyMHNwbGl0JTNEJTIydHJhaW4lMjIp",highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> datasets <span class="hljs-keyword">import</span> load_dataset

<span class="hljs-meta">&gt;&gt;&gt; </span>config.dataset_name = <span class="hljs-string">&quot;huggan/smithsonian_butterflies_subset&quot;</span>
<span class="hljs-meta">&gt;&gt;&gt; </span>dataset = load_dataset(config.dataset_name, split=<span class="hljs-string">&quot;train&quot;</span>)`,wrap:!1}}),D=new i({props:{code:"aW1wb3J0JTIwbWF0cGxvdGxpYi5weXBsb3QlMjBhcyUyMHBsdCUwQSUwQWZpZyUyQyUyMGF4cyUyMCUzRCUyMHBsdC5zdWJwbG90cygxJTJDJTIwNCUyQyUyMGZpZ3NpemUlM0QoMTYlMkMlMjA0KSklMEFmb3IlMjBpJTJDJTIwaW1hZ2UlMjBpbiUyMGVudW1lcmF0ZShkYXRhc2V0JTVCJTNBNCU1RCU1QiUyMmltYWdlJTIyJTVEKSUzQSUwQSUyMCUyMCUyMCUyMGF4cyU1QmklNUQuaW1zaG93KGltYWdlKSUwQSUyMCUyMCUyMCUyMGF4cyU1QmklNUQuc2V0X2F4aXNfb2ZmKCklMEFmaWcuc2hvdygp",highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">import</span> matplotlib.pyplot <span class="hljs-keyword">as</span> plt

<span class="hljs-meta">&gt;&gt;&gt; </span>fig, axs = plt.subplots(<span class="hljs-number">1</span>, <span class="hljs-number">4</span>, figsize=(<span class="hljs-number">16</span>, <span class="hljs-number">4</span>))
<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">for</span> i, image <span class="hljs-keyword">in</span> <span class="hljs-built_in">enumerate</span>(dataset[:<span class="hljs-number">4</span>][<span class="hljs-string">&quot;image&quot;</span>]):
<span class="hljs-meta">... </span>    axs[i].imshow(image)
<span class="hljs-meta">... </span>    axs[i].set_axis_off()
<span class="hljs-meta">&gt;&gt;&gt; </span>fig.show()`,wrap:!1}}),$=new i({props:{code:"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",highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> torchvision <span class="hljs-keyword">import</span> transforms

<span class="hljs-meta">&gt;&gt;&gt; </span>preprocess = transforms.Compose(
<span class="hljs-meta">... </span>    [
<span class="hljs-meta">... </span>        transforms.Resize((config.image_size, config.image_size)),
<span class="hljs-meta">... </span>        transforms.RandomHorizontalFlip(),
<span class="hljs-meta">... </span>        transforms.ToTensor(),
<span class="hljs-meta">... </span>        transforms.Normalize([<span class="hljs-number">0.5</span>], [<span class="hljs-number">0.5</span>]),
<span class="hljs-meta">... </span>    ]
<span class="hljs-meta">... </span>)`,wrap:!1}}),v=new i({props:{code:"ZGVmJTIwdHJhbnNmb3JtKGV4YW1wbGVzKSUzQSUwQSUyMCUyMCUyMCUyMGltYWdlcyUyMCUzRCUyMCU1QnByZXByb2Nlc3MoaW1hZ2UuY29udmVydCglMjJSR0IlMjIpKSUyMGZvciUyMGltYWdlJTIwaW4lMjBleGFtcGxlcyU1QiUyMmltYWdlJTIyJTVEJTVEJTBBJTIwJTIwJTIwJTIwcmV0dXJuJTIwJTdCJTIyaW1hZ2VzJTIyJTNBJTIwaW1hZ2VzJTdEJTBBJTBBJTBBZGF0YXNldC5zZXRfdHJhbnNmb3JtKHRyYW5zZm9ybSk=",highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">def</span> <span class="hljs-title function_">transform</span>(<span class="hljs-params">examples</span>):
<span class="hljs-meta">... </span>    images = [preprocess(image.convert(<span class="hljs-string">&quot;RGB&quot;</span>)) <span class="hljs-keyword">for</span> image <span class="hljs-keyword">in</span> examples[<span class="hljs-string">&quot;image&quot;</span>]]
<span class="hljs-meta">... </span>    <span class="hljs-keyword">return</span> {<span class="hljs-string">&quot;images&quot;</span>: images}


<span class="hljs-meta">&gt;&gt;&gt; </span>dataset.set_transform(transform)`,wrap:!1}}),x=new i({props:{code:"aW1wb3J0JTIwdG9yY2glMEElMEF0cmFpbl9kYXRhbG9hZGVyJTIwJTNEJTIwdG9yY2gudXRpbHMuZGF0YS5EYXRhTG9hZGVyKGRhdGFzZXQlMkMlMjBiYXRjaF9zaXplJTNEY29uZmlnLnRyYWluX2JhdGNoX3NpemUlMkMlMjBzaHVmZmxlJTNEVHJ1ZSk=",highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">import</span> torch

<span class="hljs-meta">&gt;&gt;&gt; </span>train_dataloader = torch.utils.data.DataLoader(dataset, batch_size=config.train_batch_size, shuffle=<span class="hljs-literal">True</span>)`,wrap:!1}}),H=new ul({props:{title:"UNet2DModel 생성하기",local:"unet2dmodel-생성하기",headingTag:"h2"}}),q=new i({props:{code:"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",highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> diffusers <span class="hljs-keyword">import</span> UNet2DModel

<span class="hljs-meta">&gt;&gt;&gt; </span>model = UNet2DModel(
<span class="hljs-meta">... </span>    sample_size=config.image_size,  <span class="hljs-comment"># 타겟 이미지 해상도</span>
<span class="hljs-meta">... </span>    in_channels=<span class="hljs-number">3</span>,  <span class="hljs-comment"># 입력 채널 수, RGB 이미지에서 3</span>
<span class="hljs-meta">... </span>    out_channels=<span class="hljs-number">3</span>,  <span class="hljs-comment"># 출력 채널 수</span>
<span class="hljs-meta">... </span>    layers_per_block=<span class="hljs-number">2</span>,  <span class="hljs-comment"># UNet 블럭당 몇 개의 ResNet 레이어가 사용되는지</span>
<span class="hljs-meta">... </span>    block_out_channels=(<span class="hljs-number">128</span>, <span class="hljs-number">128</span>, <span class="hljs-number">256</span>, <span class="hljs-number">256</span>, <span class="hljs-number">512</span>, <span class="hljs-number">512</span>),  <span class="hljs-comment"># 각 UNet 블럭을 위한 출력 채널 수</span>
<span class="hljs-meta">... </span>    down_block_types=(
<span class="hljs-meta">... </span>        <span class="hljs-string">&quot;DownBlock2D&quot;</span>,  <span class="hljs-comment"># 일반적인 ResNet 다운샘플링 블럭</span>
<span class="hljs-meta">... </span>        <span class="hljs-string">&quot;DownBlock2D&quot;</span>,
<span class="hljs-meta">... </span>        <span class="hljs-string">&quot;DownBlock2D&quot;</span>,
<span class="hljs-meta">... </span>        <span class="hljs-string">&quot;DownBlock2D&quot;</span>,
<span class="hljs-meta">... </span>        <span class="hljs-string">&quot;AttnDownBlock2D&quot;</span>,  <span class="hljs-comment"># spatial self-attention이 포함된 일반적인 ResNet 다운샘플링 블럭</span>
<span class="hljs-meta">... </span>        <span class="hljs-string">&quot;DownBlock2D&quot;</span>,
<span class="hljs-meta">... </span>    ),
<span class="hljs-meta">... </span>    up_block_types=(
<span class="hljs-meta">... </span>        <span class="hljs-string">&quot;UpBlock2D&quot;</span>,  <span class="hljs-comment"># 일반적인 ResNet 업샘플링 블럭</span>
<span class="hljs-meta">... </span>        <span class="hljs-string">&quot;AttnUpBlock2D&quot;</span>,  <span class="hljs-comment"># spatial self-attention이 포함된 일반적인 ResNet 업샘플링 블럭</span>
<span class="hljs-meta">... </span>        <span class="hljs-string">&quot;UpBlock2D&quot;</span>,
<span class="hljs-meta">... </span>        <span class="hljs-string">&quot;UpBlock2D&quot;</span>,
<span class="hljs-meta">... </span>        <span class="hljs-string">&quot;UpBlock2D&quot;</span>,
<span class="hljs-meta">... </span>        <span class="hljs-string">&quot;UpBlock2D&quot;</span>,
<span class="hljs-meta">... </span>    ),
<span class="hljs-meta">... </span>)`,wrap:!1}}),P=new i({props:{code:"c2FtcGxlX2ltYWdlJTIwJTNEJTIwZGF0YXNldCU1QjAlNUQlNUIlMjJpbWFnZXMlMjIlNUQudW5zcXVlZXplKDApJTBBcHJpbnQoJTIySW5wdXQlMjBzaGFwZSUzQSUyMiUyQyUyMHNhbXBsZV9pbWFnZS5zaGFwZSklMEElMEFwcmludCglMjJPdXRwdXQlMjBzaGFwZSUzQSUyMiUyQyUyMG1vZGVsKHNhbXBsZV9pbWFnZSUyQyUyMHRpbWVzdGVwJTNEMCkuc2FtcGxlLnNoYXBlKQ==",highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span>sample_image = dataset[<span class="hljs-number">0</span>][<span class="hljs-string">&quot;images&quot;</span>].unsqueeze(<span class="hljs-number">0</span>)
<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-built_in">print</span>(<span class="hljs-string">&quot;Input shape:&quot;</span>, sample_image.shape)
Input shape: torch.Size([<span class="hljs-number">1</span>, <span class="hljs-number">3</span>, <span class="hljs-number">128</span>, <span class="hljs-number">128</span>])

<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-built_in">print</span>(<span class="hljs-string">&quot;Output shape:&quot;</span>, model(sample_image, timestep=<span class="hljs-number">0</span>).sample.shape)
Output shape: torch.Size([<span class="hljs-number">1</span>, <span class="hljs-number">3</span>, <span class="hljs-number">128</span>, <span class="hljs-number">128</span>])`,wrap:!1}}),sl=new ul({props:{title:"스케줄러 생성하기",local:"스케줄러-생성하기",headingTag:"h2"}}),tl=new i({props:{code:"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",highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">import</span> torch
<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> PIL <span class="hljs-keyword">import</span> Image
<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> diffusers <span class="hljs-keyword">import</span> DDPMScheduler

<span class="hljs-meta">&gt;&gt;&gt; </span>noise_scheduler = DDPMScheduler(num_train_timesteps=<span class="hljs-number">1000</span>)
<span class="hljs-meta">&gt;&gt;&gt; </span>noise = torch.randn(sample_image.shape)
<span class="hljs-meta">&gt;&gt;&gt; </span>timesteps = torch.LongTensor([<span class="hljs-number">50</span>])
<span class="hljs-meta">&gt;&gt;&gt; </span>noisy_image = noise_scheduler.add_noise(sample_image, noise, timesteps)

<span class="hljs-meta">&gt;&gt;&gt; </span>Image.fromarray(((noisy_image.permute(<span class="hljs-number">0</span>, <span class="hljs-number">2</span>, <span class="hljs-number">3</span>, <span class="hljs-number">1</span>) + <span class="hljs-number">1.0</span>) * <span class="hljs-number">127.5</span>).<span class="hljs-built_in">type</span>(torch.uint8).numpy()[<span class="hljs-number">0</span>])`,wrap:!1}}),Ul=new i({props:{code:"aW1wb3J0JTIwdG9yY2gubm4uZnVuY3Rpb25hbCUyMGFzJTIwRiUwQSUwQW5vaXNlX3ByZWQlMjAlM0QlMjBtb2RlbChub2lzeV9pbWFnZSUyQyUyMHRpbWVzdGVwcykuc2FtcGxlJTBBbG9zcyUyMCUzRCUyMEYubXNlX2xvc3Mobm9pc2VfcHJlZCUyQyUyMG5vaXNlKQ==",highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">import</span> torch.nn.functional <span class="hljs-keyword">as</span> F

<span class="hljs-meta">&gt;&gt;&gt; </span>noise_pred = model(noisy_image, timesteps).sample
<span class="hljs-meta">&gt;&gt;&gt; </span>loss = F.mse_loss(noise_pred, noise)`,wrap:!1}}),Jl=new ul({props:{title:"모델 학습하기",local:"모델-학습하기",headingTag:"h2"}}),yl=new i({props:{code:"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",highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> diffusers.optimization <span class="hljs-keyword">import</span> get_cosine_schedule_with_warmup

<span class="hljs-meta">&gt;&gt;&gt; </span>optimizer = torch.optim.AdamW(model.parameters(), lr=config.learning_rate)
<span class="hljs-meta">&gt;&gt;&gt; </span>lr_scheduler = get_cosine_schedule_with_warmup(
<span class="hljs-meta">... </span>    optimizer=optimizer,
<span class="hljs-meta">... </span>    num_warmup_steps=config.lr_warmup_steps,
<span class="hljs-meta">... </span>    num_training_steps=(<span class="hljs-built_in">len</span>(train_dataloader) * config.num_epochs),
<span class="hljs-meta">... </span>)`,wrap:!1}}),cl=new i({props:{code:"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",highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> diffusers <span class="hljs-keyword">import</span> DDPMPipeline
<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">import</span> math
<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">import</span> os


<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">def</span> <span class="hljs-title function_">make_grid</span>(<span class="hljs-params">images, rows, cols</span>):
<span class="hljs-meta">... </span>    w, h = images[<span class="hljs-number">0</span>].size
<span class="hljs-meta">... </span>    grid = Image.new(<span class="hljs-string">&quot;RGB&quot;</span>, size=(cols * w, rows * h))
<span class="hljs-meta">... </span>    <span class="hljs-keyword">for</span> i, image <span class="hljs-keyword">in</span> <span class="hljs-built_in">enumerate</span>(images):
<span class="hljs-meta">... </span>        grid.paste(image, box=(i % cols * w, i // cols * h))
<span class="hljs-meta">... </span>    <span class="hljs-keyword">return</span> grid


<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">def</span> <span class="hljs-title function_">evaluate</span>(<span class="hljs-params">config, epoch, pipeline</span>):
<span class="hljs-meta">... </span>    <span class="hljs-comment"># 랜덤한 노이즈로 부터 이미지를 추출합니다.(이는 역전파 diffusion 과정입니다.)</span>
<span class="hljs-meta">... </span>    <span class="hljs-comment"># 기본 파이프라인 출력 형태는 \`List[PIL.Image]\` 입니다.</span>
<span class="hljs-meta">... </span>    images = pipeline(
<span class="hljs-meta">... </span>        batch_size=config.eval_batch_size,
<span class="hljs-meta">... </span>        generator=torch.manual_seed(config.seed),
<span class="hljs-meta">... </span>    ).images

<span class="hljs-meta">... </span>    <span class="hljs-comment"># 이미지들을 그리드로 만들어줍니다.</span>
<span class="hljs-meta">... </span>    image_grid = make_grid(images, rows=<span class="hljs-number">4</span>, cols=<span class="hljs-number">4</span>)

<span class="hljs-meta">... </span>    <span class="hljs-comment"># 이미지들을 저장합니다.</span>
<span class="hljs-meta">... </span>    test_dir = os.path.join(config.output_dir, <span class="hljs-string">&quot;samples&quot;</span>)
<span class="hljs-meta">... </span>    os.makedirs(test_dir, exist_ok=<span class="hljs-literal">True</span>)
<span class="hljs-meta">... </span>    image_grid.save(<span class="hljs-string">f&quot;<span class="hljs-subst">{test_dir}</span>/<span class="hljs-subst">{epoch:04d}</span>.png&quot;</span>)`,wrap:!1}}),ml=new i({props:{code:"from%20accelerate%20import%20Accelerator%0Afrom%20huggingface_hub%20import%20create_repo%2C%20upload_folder%0Afrom%20tqdm.auto%20import%20tqdm%0Afrom%20pathlib%20import%20Path%0Aimport%20os%0A%0A%0Adef%20train_loop(config%2C%20model%2C%20noise_scheduler%2C%20optimizer%2C%20train_dataloader%2C%20lr_scheduler)%3A%0A%20%20%20%20%23%20Initialize%20accelerator%20and%20tensorboard%20logging%0A%20%20%20%20accelerator%20%3D%20Accelerator(%0A%20%20%20%20%20%20%20%20mixed_precision%3Dconfig.mixed_precision%2C%0A%20%20%20%20%20%20%20%20gradient_accumulation_steps%3Dconfig.gradient_accumulation_steps%2C%0A%20%20%20%20%20%20%20%20log_with%3D%22tensorboard%22%2C%0A%20%20%20%20%20%20%20%20project_dir%3Dos.path.join(config.output_dir%2C%20%22logs%22)%2C%0A%20%20%20%20)%0A%20%20%20%20if%20accelerator.is_main_process%3A%0A%20%20%20%20%20%20%20%20if%20config.output_dir%20is%20not%20None%3A%0A%20%20%20%20%20%20%20%20%20%20%20%20os.makedirs(config.output_dir%2C%20exist_ok%3DTrue)%0A%20%20%20%20%20%20%20%20if%20config.push_to_hub%3A%0A%20%20%20%20%20%20%20%20%20%20%20%20repo_id%20%3D%20create_repo(%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20repo_id%3Dconfig.hub_model_id%20or%20Path(config.output_dir).name%2C%20exist_ok%3DTrue%0A%20%20%20%20%20%20%20%20%20%20%20%20).repo_id%0A%20%20%20%20%20%20%20%20accelerator.init_trackers(%22train_example%22)%0A%0A%20%20%20%20%23%20%EB%AA%A8%EB%93%A0%20%EA%B2%83%EC%9D%B4%20%EC%A4%80%EB%B9%84%EB%90%98%EC%97%88%EC%8A%B5%EB%8B%88%EB%8B%A4.%0A%20%20%20%20%23%20%EA%B8%B0%EC%96%B5%ED%95%B4%EC%95%BC%20%ED%95%A0%20%ED%8A%B9%EC%A0%95%ED%95%9C%20%EC%88%9C%EC%84%9C%EB%8A%94%20%EC%97%86%EC%9C%BC%EB%A9%B0%20%EC%A4%80%EB%B9%84%ED%95%9C%20%EB%B0%A9%EB%B2%95%EC%97%90%20%EC%A0%9C%EA%B3%B5%ED%95%9C%20%EA%B2%83%EA%B3%BC%20%EB%8F%99%EC%9D%BC%ED%95%9C%20%EC%88%9C%EC%84%9C%EB%A1%9C%20%EA%B0%9D%EC%B2%B4%EC%9D%98%20%EC%95%95%EC%B6%95%EC%9D%84%20%ED%92%80%EB%A9%B4%20%EB%90%A9%EB%8B%88%EB%8B%A4.%0A%20%20%20%20model%2C%20optimizer%2C%20train_dataloader%2C%20lr_scheduler%20%3D%20accelerator.prepare(%0A%20%20%20%20%20%20%20%20model%2C%20optimizer%2C%20train_dataloader%2C%20lr_scheduler%0A%20%20%20%20)%0A%0A%20%20%20%20global_step%20%3D%200%0A%0A%20%20%20%20%23%20%EC%9D%B4%EC%A0%9C%20%EB%AA%A8%EB%8D%B8%EC%9D%84%20%ED%95%99%EC%8A%B5%ED%95%A9%EB%8B%88%EB%8B%A4.%0A%20%20%20%20for%20epoch%20in%20range(config.num_epochs)%3A%0A%20%20%20%20%20%20%20%20progress_bar%20%3D%20tqdm(total%3Dlen(train_dataloader)%2C%20disable%3Dnot%20accelerator.is_local_main_process)%0A%20%20%20%20%20%20%20%20progress_bar.set_description(f%22Epoch%20%7Bepoch%7D%22)%0A%0A%20%20%20%20%20%20%20%20for%20step%2C%20batch%20in%20enumerate(train_dataloader)%3A%0A%20%20%20%20%20%20%20%20%20%20%20%20clean_images%20%3D%20batch%5B%22images%22%5D%0A%20%20%20%20%20%20%20%20%20%20%20%20%23%20%EC%9D%B4%EB%AF%B8%EC%A7%80%EC%97%90%20%EB%8D%94%ED%95%A0%20%EB%85%B8%EC%9D%B4%EC%A6%88%EB%A5%BC%20%EC%83%98%ED%94%8C%EB%A7%81%ED%95%A9%EB%8B%88%EB%8B%A4.%0A%20%20%20%20%20%20%20%20%20%20%20%20noise%20%3D%20torch.randn(clean_images.shape).to(clean_images.device)%0A%20%20%20%20%20%20%20%20%20%20%20%20bs%20%3D%20clean_images.shape%5B0%5D%0A%0A%20%20%20%20%20%20%20%20%20%20%20%20%23%20%EA%B0%81%20%EC%9D%B4%EB%AF%B8%EC%A7%80%EB%A5%BC%20%EC%9C%84%ED%95%9C%20%EB%9E%9C%EB%8D%A4%ED%95%9C%20%ED%83%80%EC%9E%84%EC%8A%A4%ED%85%9D(timestep)%EC%9D%84%20%EC%83%98%ED%94%8C%EB%A7%81%ED%95%A9%EB%8B%88%EB%8B%A4.%0A%20%20%20%20%20%20%20%20%20%20%20%20timesteps%20%3D%20torch.randint(%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%200%2C%20noise_scheduler.config.num_train_timesteps%2C%20(bs%2C)%2C%20device%3Dclean_images.device%0A%20%20%20%20%20%20%20%20%20%20%20%20).long()%0A%0A%20%20%20%20%20%20%20%20%20%20%20%20%23%20%EA%B0%81%20%ED%83%80%EC%9E%84%EC%8A%A4%ED%85%9D%EC%9D%98%20%EB%85%B8%EC%9D%B4%EC%A6%88%20%ED%81%AC%EA%B8%B0%EC%97%90%20%EB%94%B0%EB%9D%BC%20%EA%B9%A8%EB%81%97%ED%95%9C%20%EC%9D%B4%EB%AF%B8%EC%A7%80%EC%97%90%20%EB%85%B8%EC%9D%B4%EC%A6%88%EB%A5%BC%20%EC%B6%94%EA%B0%80%ED%95%A9%EB%8B%88%EB%8B%A4.%0A%20%20%20%20%20%20%20%20%20%20%20%20%23%20(%EC%9D%B4%EB%8A%94%20foward%20diffusion%20%EA%B3%BC%EC%A0%95%EC%9E%85%EB%8B%88%EB%8B%A4.)%0A%20%20%20%20%20%20%20%20%20%20%20%20noisy_images%20%3D%20noise_scheduler.add_noise(clean_images%2C%20noise%2C%20timesteps)%0A%0A%20%20%20%20%20%20%20%20%20%20%20%20with%20accelerator.accumulate(model)%3A%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%23%20%EB%85%B8%EC%9D%B4%EC%A6%88%EB%A5%BC%20%EB%B0%98%EB%B3%B5%EC%A0%81%EC%9C%BC%EB%A1%9C%20%EC%98%88%EC%B8%A1%ED%95%A9%EB%8B%88%EB%8B%A4.%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20noise_pred%20%3D%20model(noisy_images%2C%20timesteps%2C%20return_dict%3DFalse)%5B0%5D%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20loss%20%3D%20F.mse_loss(noise_pred%2C%20noise)%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20accelerator.backward(loss)%0A%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20accelerator.clip_grad_norm_(model.parameters()%2C%201.0)%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20optimizer.step()%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20lr_scheduler.step()%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20optimizer.zero_grad()%0A%0A%20%20%20%20%20%20%20%20%20%20%20%20progress_bar.update(1)%0A%20%20%20%20%20%20%20%20%20%20%20%20logs%20%3D%20%7B%22loss%22%3A%20loss.detach().item()%2C%20%22lr%22%3A%20lr_scheduler.get_last_lr()%5B0%5D%2C%20%22step%22%3A%20global_step%7D%0A%20%20%20%20%20%20%20%20%20%20%20%20progress_bar.set_postfix(**logs)%0A%20%20%20%20%20%20%20%20%20%20%20%20accelerator.log(logs%2C%20step%3Dglobal_step)%0A%20%20%20%20%20%20%20%20%20%20%20%20global_step%20%2B%3D%201%0A%0A%20%20%20%20%20%20%20%20%23%20%EA%B0%81%20%EC%97%90%ED%8F%AC%ED%81%AC%EA%B0%80%20%EB%81%9D%EB%82%9C%20%ED%9B%84%20evaluate()%EC%99%80%20%EB%AA%87%20%EA%B0%80%EC%A7%80%20%EB%8D%B0%EB%AA%A8%20%EC%9D%B4%EB%AF%B8%EC%A7%80%EB%A5%BC%20%EC%84%A0%ED%83%9D%EC%A0%81%EC%9C%BC%EB%A1%9C%20%EC%83%98%ED%94%8C%EB%A7%81%ED%95%98%EA%B3%A0%20%EB%AA%A8%EB%8D%B8%EC%9D%84%20%EC%A0%80%EC%9E%A5%ED%95%A9%EB%8B%88%EB%8B%A4.%0A%20%20%20%20%20%20%20%20if%20accelerator.is_main_process%3A%0A%20%20%20%20%20%20%20%20%20%20%20%20pipeline%20%3D%20DDPMPipeline(unet%3Daccelerator.unwrap_model(model)%2C%20scheduler%3Dnoise_scheduler)%0A%0A%20%20%20%20%20%20%20%20%20%20%20%20if%20(epoch%20%2B%201)%20%25%20config.save_image_epochs%20%3D%3D%200%20or%20epoch%20%3D%3D%20config.num_epochs%20-%201%3A%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20evaluate(config%2C%20epoch%2C%20pipeline)%0A%0A%20%20%20%20%20%20%20%20%20%20%20%20if%20(epoch%20%2B%201)%20%25%20config.save_model_epochs%20%3D%3D%200%20or%20epoch%20%3D%3D%20config.num_epochs%20-%201%3A%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20if%20config.push_to_hub%3A%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20upload_folder(%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20repo_id%3Drepo_id%2C%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20folder_path%3Dconfig.output_dir%2C%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20commit_message%3Df%22Epoch%20%7Bepoch%7D%22%2C%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20ignore_patterns%3D%5B%22step_*%22%2C%20%22epoch_*%22%5D%2C%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20)%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20else%3A%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20pipeline.save_pretrained(config.output_dir)",highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> accelerate <span class="hljs-keyword">import</span> Accelerator
<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> huggingface_hub <span class="hljs-keyword">import</span> create_repo, upload_folder
<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> tqdm.auto <span class="hljs-keyword">import</span> tqdm
<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> pathlib <span class="hljs-keyword">import</span> Path
<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">import</span> os


<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">def</span> <span class="hljs-title function_">train_loop</span>(<span class="hljs-params">config, model, noise_scheduler, optimizer, train_dataloader, lr_scheduler</span>):
<span class="hljs-meta">... </span>    <span class="hljs-comment"># Initialize accelerator and tensorboard logging</span>
<span class="hljs-meta">... </span>    accelerator = Accelerator(
<span class="hljs-meta">... </span>        mixed_precision=config.mixed_precision,
<span class="hljs-meta">... </span>        gradient_accumulation_steps=config.gradient_accumulation_steps,
<span class="hljs-meta">... </span>        log_with=<span class="hljs-string">&quot;tensorboard&quot;</span>,
<span class="hljs-meta">... </span>        project_dir=os.path.join(config.output_dir, <span class="hljs-string">&quot;logs&quot;</span>),
<span class="hljs-meta">... </span>    )
<span class="hljs-meta">... </span>    <span class="hljs-keyword">if</span> accelerator.is_main_process:
<span class="hljs-meta">... </span>        <span class="hljs-keyword">if</span> config.output_dir <span class="hljs-keyword">is</span> <span class="hljs-keyword">not</span> <span class="hljs-literal">None</span>:
<span class="hljs-meta">... </span>            os.makedirs(config.output_dir, exist_ok=<span class="hljs-literal">True</span>)
<span class="hljs-meta">... </span>        <span class="hljs-keyword">if</span> config.push_to_hub:
<span class="hljs-meta">... </span>            repo_id = create_repo(
<span class="hljs-meta">... </span>                repo_id=config.hub_model_id <span class="hljs-keyword">or</span> Path(config.output_dir).name, exist_ok=<span class="hljs-literal">True</span>
<span class="hljs-meta">... </span>            ).repo_id
<span class="hljs-meta">... </span>        accelerator.init_trackers(<span class="hljs-string">&quot;train_example&quot;</span>)

<span class="hljs-meta">... </span>    <span class="hljs-comment"># 모든 것이 준비되었습니다.</span>
<span class="hljs-meta">... </span>    <span class="hljs-comment"># 기억해야 할 특정한 순서는 없으며 준비한 방법에 제공한 것과 동일한 순서로 객체의 압축을 풀면 됩니다.</span>
<span class="hljs-meta">... </span>    model, optimizer, train_dataloader, lr_scheduler = accelerator.prepare(
<span class="hljs-meta">... </span>        model, optimizer, train_dataloader, lr_scheduler
<span class="hljs-meta">... </span>    )

<span class="hljs-meta">... </span>    global_step = <span class="hljs-number">0</span>

<span class="hljs-meta">... </span>    <span class="hljs-comment"># 이제 모델을 학습합니다.</span>
<span class="hljs-meta">... </span>    <span class="hljs-keyword">for</span> epoch <span class="hljs-keyword">in</span> <span class="hljs-built_in">range</span>(config.num_epochs):
<span class="hljs-meta">... </span>        progress_bar = tqdm(total=<span class="hljs-built_in">len</span>(train_dataloader), disable=<span class="hljs-keyword">not</span> accelerator.is_local_main_process)
<span class="hljs-meta">... </span>        progress_bar.set_description(<span class="hljs-string">f&quot;Epoch <span class="hljs-subst">{epoch}</span>&quot;</span>)

<span class="hljs-meta">... </span>        <span class="hljs-keyword">for</span> step, batch <span class="hljs-keyword">in</span> <span class="hljs-built_in">enumerate</span>(train_dataloader):
<span class="hljs-meta">... </span>            clean_images = batch[<span class="hljs-string">&quot;images&quot;</span>]
<span class="hljs-meta">... </span>            <span class="hljs-comment"># 이미지에 더할 노이즈를 샘플링합니다.</span>
<span class="hljs-meta">... </span>            noise = torch.randn(clean_images.shape).to(clean_images.device)
<span class="hljs-meta">... </span>            bs = clean_images.shape[<span class="hljs-number">0</span>]

<span class="hljs-meta">... </span>            <span class="hljs-comment"># 각 이미지를 위한 랜덤한 타임스텝(timestep)을 샘플링합니다.</span>
<span class="hljs-meta">... </span>            timesteps = torch.randint(
<span class="hljs-meta">... </span>                <span class="hljs-number">0</span>, noise_scheduler.config.num_train_timesteps, (bs,), device=clean_images.device
<span class="hljs-meta">... </span>            ).long()

<span class="hljs-meta">... </span>            <span class="hljs-comment"># 각 타임스텝의 노이즈 크기에 따라 깨끗한 이미지에 노이즈를 추가합니다.</span>
<span class="hljs-meta">... </span>            <span class="hljs-comment"># (이는 foward diffusion 과정입니다.)</span>
<span class="hljs-meta">... </span>            noisy_images = noise_scheduler.add_noise(clean_images, noise, timesteps)

<span class="hljs-meta">... </span>            <span class="hljs-keyword">with</span> accelerator.accumulate(model):
<span class="hljs-meta">... </span>                <span class="hljs-comment"># 노이즈를 반복적으로 예측합니다.</span>
<span class="hljs-meta">... </span>                noise_pred = model(noisy_images, timesteps, return_dict=<span class="hljs-literal">False</span>)[<span class="hljs-number">0</span>]
<span class="hljs-meta">... </span>                loss = F.mse_loss(noise_pred, noise)
<span class="hljs-meta">... </span>                accelerator.backward(loss)

<span class="hljs-meta">... </span>                accelerator.clip_grad_norm_(model.parameters(), <span class="hljs-number">1.0</span>)
<span class="hljs-meta">... </span>                optimizer.step()
<span class="hljs-meta">... </span>                lr_scheduler.step()
<span class="hljs-meta">... </span>                optimizer.zero_grad()

<span class="hljs-meta">... </span>            progress_bar.update(<span class="hljs-number">1</span>)
<span class="hljs-meta">... </span>            logs = {<span class="hljs-string">&quot;loss&quot;</span>: loss.detach().item(), <span class="hljs-string">&quot;lr&quot;</span>: lr_scheduler.get_last_lr()[<span class="hljs-number">0</span>], <span class="hljs-string">&quot;step&quot;</span>: global_step}
<span class="hljs-meta">... </span>            progress_bar.set_postfix(**logs)
<span class="hljs-meta">... </span>            accelerator.log(logs, step=global_step)
<span class="hljs-meta">... </span>            global_step += <span class="hljs-number">1</span>

<span class="hljs-meta">... </span>        <span class="hljs-comment"># 각 에포크가 끝난 후 evaluate()와 몇 가지 데모 이미지를 선택적으로 샘플링하고 모델을 저장합니다.</span>
<span class="hljs-meta">... </span>        <span class="hljs-keyword">if</span> accelerator.is_main_process:
<span class="hljs-meta">... </span>            pipeline = DDPMPipeline(unet=accelerator.unwrap_model(model), scheduler=noise_scheduler)

<span class="hljs-meta">... </span>            <span class="hljs-keyword">if</span> (epoch + <span class="hljs-number">1</span>) % config.save_image_epochs == <span class="hljs-number">0</span> <span class="hljs-keyword">or</span> epoch == config.num_epochs - <span class="hljs-number">1</span>:
<span class="hljs-meta">... </span>                evaluate(config, epoch, pipeline)

<span class="hljs-meta">... </span>            <span class="hljs-keyword">if</span> (epoch + <span class="hljs-number">1</span>) % config.save_model_epochs == <span class="hljs-number">0</span> <span class="hljs-keyword">or</span> epoch == config.num_epochs - <span class="hljs-number">1</span>:
<span class="hljs-meta">... </span>                <span class="hljs-keyword">if</span> config.push_to_hub:
<span class="hljs-meta">... </span>                    upload_folder(
<span class="hljs-meta">... </span>                        repo_id=repo_id,
<span class="hljs-meta">... </span>                        folder_path=config.output_dir,
<span class="hljs-meta">... </span>                        commit_message=<span class="hljs-string">f&quot;Epoch <span class="hljs-subst">{epoch}</span>&quot;</span>,
<span class="hljs-meta">... </span>                        ignore_patterns=[<span class="hljs-string">&quot;step_*&quot;</span>, <span class="hljs-string">&quot;epoch_*&quot;</span>],
<span class="hljs-meta">... </span>                    )
<span class="hljs-meta">... </span>                <span class="hljs-keyword">else</span>:
<span class="hljs-meta">... </span>                    pipeline.save_pretrained(config.output_dir)`,wrap:!1}}),Il=new i({props:{code:"ZnJvbSUyMGFjY2VsZXJhdGUlMjBpbXBvcnQlMjBub3RlYm9va19sYXVuY2hlciUwQSUwQWFyZ3MlMjAlM0QlMjAoY29uZmlnJTJDJTIwbW9kZWwlMkMlMjBub2lzZV9zY2hlZHVsZXIlMkMlMjBvcHRpbWl6ZXIlMkMlMjB0cmFpbl9kYXRhbG9hZGVyJTJDJTIwbHJfc2NoZWR1bGVyKSUwQSUwQW5vdGVib29rX2xhdW5jaGVyKHRyYWluX2xvb3AlMkMlMjBhcmdzJTJDJTIwbnVtX3Byb2Nlc3NlcyUzRDEp",highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> accelerate <span class="hljs-keyword">import</span> notebook_launcher

<span class="hljs-meta">&gt;&gt;&gt; </span>args = (config, model, noise_scheduler, optimizer, train_dataloader, lr_scheduler)

<span class="hljs-meta">&gt;&gt;&gt; </span>notebook_launcher(train_loop, args, num_processes=<span class="hljs-number">1</span>)`,wrap:!1}}),ol=new i({props:{code:"aW1wb3J0JTIwZ2xvYiUwQSUwQXNhbXBsZV9pbWFnZXMlMjAlM0QlMjBzb3J0ZWQoZ2xvYi5nbG9iKGYlMjIlN0Jjb25maWcub3V0cHV0X2RpciU3RCUyRnNhbXBsZXMlMkYqLnBuZyUyMikpJTBBSW1hZ2Uub3BlbihzYW1wbGVfaW1hZ2VzJTVCLTElNUQp",highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">import</span> glob

<span class="hljs-meta">&gt;&gt;&gt; </span>sample_images = <span class="hljs-built_in">sorted</span>(glob.glob(<span class="hljs-string">f&quot;<span class="hljs-subst">{config.output_dir}</span>/samples/*.png&quot;</span>))
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