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facebookarchive/caffe2

8,382ShellAudience · researcherComplexity · 5/5Setup · hard

TLDR

An archived deep learning framework by Facebook that has been merged into PyTorch. This repository is historical reference only, all active development is in the PyTorch project.

Mindmap

mindmap
  root((caffe2 archived))
    Status
      Archived repo
      Merged into PyTorch
      Historical reference
    Original Purpose
      Deep learning framework
      Neural network training
      Production deployment
    Where to go now
      PyTorch repository
      PyTorch docs
    Audience
      Researchers
      ML engineers
      Historical interest
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Code map

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Things people build with this

USE CASE 1

Browse the archived Caffe2 source code for historical reference on how Facebook structured an early production deep learning framework.

USE CASE 2

Understand the architectural decisions that shaped PyTorch by studying what Caffe2 contributed when it was merged.

USE CASE 3

Find the active PyTorch repository where all Caffe2 features now live for current use or contribution.

Tech stack

ShellPyTorch

Getting it running

Difficulty · hard Time to first run · 1day+

This repository is archived and no longer maintained, use the PyTorch repository for all active development.

In plain English

Caffe2 was a deep learning framework developed by Facebook, designed to be lightweight, modular, and capable of running at scale. Deep learning frameworks are software libraries that provide the building blocks for training and running neural networks, which are the type of AI models used for tasks like image recognition, language processing, and recommendation systems. Caffe2 was built as a successor to the original Caffe framework, with a focus on making it easier to express different model architectures, run training and inference efficiently, and deploy models in production environments across different hardware. This repository is now archived. The README states clearly that the source code has moved to the PyTorch repository. PyTorch is Meta's primary deep learning framework, and Caffe2 was merged into it. If you are looking to use or contribute to this codebase, the active development happens in the PyTorch project, not here. The repository itself is mostly of historical interest at this point. Because the README is very short and simply redirects to the PyTorch repository and the now-defunct caffe2.ai website, there is little additional detail available about the original feature set or architecture from this source alone.

Copy-paste prompts

Prompt 1
What features from the original Caffe2 framework are available in PyTorch today and how do they map to current PyTorch APIs?
Prompt 2
Show me how to find the Caffe2-era mobile inference code that was merged into PyTorch and its equivalent modern API.
Prompt 3
Explain the architectural difference between Caffe2's approach to model deployment and how PyTorch handles the same use case today.
Prompt 4
How do I migrate old Caffe2 model code to the equivalent PyTorch API so it runs with the current version of PyTorch?
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