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    <title>1F1B on AI Tech Blog</title>
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      <title>분산학습의 이해 Part 3 - Pipeline Parallelism: GPipe에서 Zero Bubble까지</title>
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      <description>Pipeline Parallelism의 진화를 추적합니다. Naive Pipeline의 낮은 GPU 활용률에서 시작해, GPipe의 micro-batch, 1F1B의 교차 실행, ZBH의 Backprop 분리까지 bubble을 줄여온 과정을 분석합니다.</description>
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