Introduction
After Facebook's release of PyTorch in October 2016, because of its developer friendliness, it immediately became well-liked. It is excellent for research and rapid prototyping thanks to its transparent and Pythonic interface. PyTorch makes it incredibly simple to debug your code and experiment with model architecture. That situation changed when PyTorch joined Caffe2 and received its entire production pipeline in May 2018. This is Facebook's pipeline in use. They use PyTorch to train the model and Caffe2 to deploy it.
This blog explains the details of PyTorch vs Caffe2 along with a brief about PyTorch and Caffe2, Features of PyTorch, Features of Caffe2 and a comparison between PyTorch vs Caffe2.

A Brief Overview About PyTorch and Caffe2
The standard building blocks for deep learning applications are the open-source machine learning frameworks PyTorch and Caffe2 from Menlo Park-based Facebook. The use of lightweight frameworks in product development for AI research and development is growing. PyTorch, introduced in October 2016, has more benefits than Caffe and other machine-learning frameworks and is more user-friendly.
Because of its dynamic computational graph and adequate memory consumption, PyTorch, one of the most recent deep learning frameworks, has become more well-liked than other open-source frameworks. According to a recent KDNuggets study, Caffe2 has yet to surpass PyTorch in terms of the user base.
The open-source machine learning frameworks PyTorch and Caffe2 merged earlier this year. "Source code now lives in the PyTorch repository," Caffe2's introductory readme article on its Github page stated in a bold link. Yangqing Jia, the author of Caffe2, claims that the combination will give Python users a smooth experience, little expense, and the luxury of expanding the capabilities of the two platforms.
PyTorch
Through a cross-frontend dispersed training and system of tools in addition to libraries, PyTorch delivers quick, flexible experimentation in addition to well-organized production. The majority of developing Python libraries have the potential to alter the deep learning area.
Facebook's artificial intelligence research team is responsible for PyTorch. It is a neural network exchange open-source Python module with the main emphasis on deep machine learning.
The Pytorch uses the least amount of resources feasible because it is created with the best memory utilization. It has an advantage over many machine learning programs because it is a neural network program. The researchers made minor tweaks to make the neural network system easier to operate.
Caffe2
A deep learning framework called Caffe2 makes easy and adaptable deep learning possible. With its foundation in the original Caffe, Caffe2 is built with expression, speed, and modularity in mind, enabling a more flexible approach to computation organization.
By utilizing community-contributed new models and methods, Caffe2 promises to give you a simple way to experiment with deep learning. Caffe2 includes native Python and C++ APIs that are interchangeable, allowing for speedy prototyping and simple optimization in the future. Caffe2 is optimized from the ground up to fully utilize the most recent NVIDIA Deep Learning SDK libraries, cuDNN, cuBLAS, and NCCL, to provide high-performance, multi-GPU acceleration for desktop, data centers, and embedded edge devices.