PyTorch vs Tensorflow: Key Differences You Need To Know

Both PyTorch and TensorFlow are top deep learning frameworks that are extremely efficient at handling a variety of tasks. But there are subtle differences in their ability, working and the way they work and it is extremely important that you understand these differences that lie in between TensorFlow vs PyTorch.

On this blog, we will understand the difference between PyTorch and TensorFlow based on the following criteria:

PyTorch vs TensorFlow:

• Open Source
• Implementation
• Easier to Learn
• Computation Graphs
• Debugging
• Community Support
• Visualization Tools
• Data Parallelism
• Prototyping and Production

Check out the PyTorch vs TensorFlow video on our YouTube channel:

Since both PyTorch and TensorFlow are very popular, it is common to be at crossroads when deciding on which one to learn or which is more powerful. This TensorFlow vs PyTorch comparison will make it easier and quicker for you to grasp all of the differences between these frameworks. Read on.

#machine learning #tensorflow #pytorch

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PyTorch vs Tensorflow: Key Differences You Need To Know

Both PyTorch and TensorFlow are top deep learning frameworks that are extremely efficient at handling a variety of tasks. But there are subtle differences in their ability, working and the way they work and it is extremely important that you understand these differences that lie in between TensorFlow vs PyTorch.

On this blog, we will understand the difference between PyTorch and TensorFlow based on the following criteria:

PyTorch vs TensorFlow:

• Open Source
• Implementation
• Easier to Learn
• Computation Graphs
• Debugging
• Community Support
• Visualization Tools
• Data Parallelism
• Prototyping and Production

Check out the PyTorch vs TensorFlow video on our YouTube channel:

Since both PyTorch and TensorFlow are very popular, it is common to be at crossroads when deciding on which one to learn or which is more powerful. This TensorFlow vs PyTorch comparison will make it easier and quicker for you to grasp all of the differences between these frameworks. Read on.

#machine learning #tensorflow #pytorch

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How PyTorch Is Challenging TensorFlow Lately

• PyTorch gives our researchers unprecedented flexibility in designing their models and running their experiments.

Google’s TensorFlow and Facebook’s PyTorch are the most popular machine learning frameworks. The former has a two-year head start over PyTorch (released in 2016). TensorFlow’s popularity reportedly declined after PyTorch bursted into the scene. However, Google released a more user-friendly TensorFlow 2.0 in January 2019 to recover lost ground.

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Interest over time for TensorFlow (top) and PyTorch (bottom) in India (Credit: Google Trends)

PyTorch–a framework for deep learning that integrates with important Python add-ons like NumPy and data-science tasks that require faster GPU processing–made some recent additions:

• Enterprise support**: **After taking over the Windows 10 PyTorch library from Facebook to boost GPU-accelerated machine learning training on Windows 10’s Subsystem for Linux(WSL), Microsoft recently added enterprise support for PyTorch AI on Azure to give PyTorch users a more reliable production experience. “This new enterprise-level offering by Microsoft closes an important gap. PyTorch gives our researchers unprecedented flexibility in designing their models and running their experiments,” Jeremy Jancsary, a senior principal research scientist at Nuance, said.
• PyTorchVideois a deep learning library for video understanding unveiled by Facebook AI recently. The source code is available on GitHub. With this, Facebook aims to support researchers develop cutting-edge machine learning models and tools. These models can enhance video understanding capabilities along with providing a unified repository of reproducible and efficient video understanding components for research and production applications.
• PyTorch Profiler: In April this year, PyTorch announced its new performance debug profiler, PyTorch Profiler, along with its 1.8.1 version release. The new tool enables accurate and efficient performance analysis in large scale deep learning models.

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Difference Between: Pytorch Vs TensorFlow

PyTorch vs TensorFlow: Which Is The Better Framework?

This comparison blog on PyTorch v/s TensorFlow is intended to be useful for anyone considering starting a new project, making the switch from one Deep Learning framework or learning about the top 2 frameworks! The focus is basically on programmability and flexibility when setting up the components of the training and deployment of the Deep Learning stack.

Let’s look at the factors we will be using for the comparison:

• Ramp-Up Time
• Graph Construction And Debugging
• Coverage
• Serialization
• Deployment
• Documentation
• Device Management
• Custom Extensions

So let the battle begin!
 

I will start this PyTorch vs TensorFlow blog by comparing both the frameworks on the basis of Ramp-Up Time.

Ramp-Up Time:

PyTorch is basically exploited NumPy with the ability to make use of the Graphic card.

Since something as simple at NumPy is the pre-requisite, this make PyTorch very easy to learn and grasp.

With Tensorflow, the major thing as we all know it is that the graph is compiled first and then we have the actual graph output.

So where is the dynamism here? Also, TensorFlow has the dependency where the compiled code is run using the TensorFlow Execution Engine. Well, for me, the lesser dependencies the better overall.

Back to PyTorch, the code is well known to execute at lightning fast speeds and turns out to be very efficient overall and here you will not require extra concepts to learn.

 

With TensorFlow, we need concepts such as Variable scoping, placeholders and sessions. This also leads to more boilerplate code, which I’m sure none of the programmers here like.

So in my opinion, PyTorch wins this one!

---

Graph Construction And Debugging:

Beginning with PyTorch, the clear advantage is the dynamic nature of the entire process of creating a graph.

The graphs can be built up by interpreting the line of code that corresponds to that particular aspect of the graph.

So this is entirely built on run-time and I like it a lot for this.

With TensorFlow, the construction is static and the graphs need to go through compilation and then running on the execution engine that I previously mentioned.

PyTorch code makes our lives that much easier because pdb can be used. Again, by making use of the standard python debugger we will not require learning to make use of another debugger from scratch.

Well with TensorFlow, you need to put in the little extra effort. There are 2 options to debug:

 

• You will need to learn the TF debugger.
• Request the variables you want to inspect from the session.

Well, PyTorch wins this one as well!

---

Coverage:

Well certain operations like:

1. Flipping a tensor along a dimension

2. Checking a tensor for NaN and infinity

3. Fast Fourier transforms supported

are supported by TensorFlow natively.

We also have the contrib package that we can use for the creation of more models.

This allows support for the use of higher-level functionality and gives you a wide spectrum of options to work with.

Well with PyTorch, as of now it has fewer features implemented but I am sure the gap will be bridged real soon due to all the attention PyTorch is attracting.

 

However, it is not as popular as TensorFlow among freelancers and learners. Well, this is subjective but it is what it is guys!

TensorFlow nailed it in this round!

---

Serialization:

Well, its no surprise that saving and loading models is fairly simple with both the frameworks.

PyTorch has a simple API. The API can either save all the weights of a model or pickle the entire class if you may.

However, the major advantage of TensorFlow is that the entire graph can be saved as a protocol buffer and yes this includes parameters and operations as well.

The Graph then can be loaded in other supported languages such as C++ or Java based on the requirement.

 

This is critical for deployment stacks where Python is not an option. Also this can be useful when you change the model source code but want to be able to run old models.

Well it is as clear as day, TensorFlow got this one!

---

Deployment:

For small-scale server-side deployments both frameworks are easy to wrap in e.g. a Flask web server.

For mobile and embedded deployments, TensorFlow works really well. This is more than what can be said of most other deep learning frameworks including PyTorch.

Deploying to Android or iOS does require a non-trivial amount of work in TensorFlow.

You don’t have to rewrite the entire inference portion of your model in Java or C++.

 

Other than performance, one of the noticeable features of TensorFlow Serving is that models can be hot-swapped easily without bringing the service down.

I think I will give it to TensorFlow for this round as well!

---

Documentation:

Well, its needless to say that I have found everything I need in the official documentation of both the frameworks.

The Python APIs are well documented and there are enough examples and tutorials to learn either framework.

But one tiny thing that grabbed my attention is that the PyTorch C library is mostly undocumented.

However, this only matters when writing a custom C extension and perhaps if contributing to the software overall.

 

To sum it up, I can say we’re stuck up with a tie here guys!

However if you think you lean towards something, head down to the comments section and express your views. Let’s engage there!

---

Device Management:

Device management in TensorFlow is a breeze – You don’t have to specify anything since the defaults are set well.

For example, TensorFlow automatically assumes you want to run on the GPU, if one is available.

In PyTorch, you must explicitly move everything onto the device even if CUDA is enabled.

The only downside with TensorFlow device management is that by default it consumes all the memory on all available GPUs even if only one is being used.

 

With PyTorch, I’ve found that the code needs more frequent checks for CUDA availability and more explicit device management. This is especially the case when writing code that should be able to run on both the CPU and GPU.

An easy win for TensorFlow here!

---

Custom Extensions:

Moving on, last but not the least I have picked out custom extensions for you guys.

Building or binding custom extensions written in C, C++ or CUDA is doable with both frameworks.

TensorFlow requires more boilerplate code though is arguably cleaner for supporting multiple types and devices.

In PyTorch however, you simply write an interface and corresponding implementation for each of the CPU and GPU versions.

Compiling the extension is also straight-forward with both frameworks and doesn’t require downloading any headers or source code outside of what’s included with the pip installation.

And PyTorch has the upper hand for this!

---

Conclusion:

Well, to be optimistic, I would say PyTorch and TensorFlow are similar and I would leave it at a tie.

But, in my personal opinion, I would prefer PyTorch over TensorFlow (in the ratio 65% over 35%)

However, this doesn’t  PyTorch is better!

At the end of the day, it comes down to what you would like to code with and what your organization requires!

 

I use PyTorch at home but TensorFlow at work!

 

Comparison Factors	TensorFlow	PyTorch
Ramp-Up Time		W
Graph Creation And Debugging		W
Coverage	W
Serialization	W
Deployment	W
Documentation	Tie	Tie
Device Management	W
Custom Extensions		W

 

Check out this interesting blog on Artificial Intelligence with Deep Learning!

I personally believe that both TensorFlow and PyTorch will revolutionize all aspects of Deep Learning ranging from Virtual Assistance all the way till driving you around town. It will be easy and subtle and have a big impact on Deep Learning and all the users!

I hope you have enjoyed my comparison blog on PyTorch v/s Tensorflow. If you have any questions, do mention it in the comments section and I will reply to you guys ASAP!

After reading this blog on PyTorch vs TensorFlow, I am pretty sure you want to know more about PyTorch, soon I will be coming up with a blog series on PyTorch. To know more about TensorFlow you can refer the following blogs:

1. What is Deep Learning?
2. Deep Learning Tutorial
3. TensorFlow Tutorial
4. Neural Network Tutorial
5. Backpropagation

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PyTorch vs TensorFlow: The Force Is Strong With Which One? | Which One You Should Learn? | Edureka

This Edureka comparison video of “PyTorch vs TensorFlow” provides you with a detailed comparison between the top 2 Python Deep Learning Frameworks.

Original article source at: https://www.edureka.co/

#pytorch #tensorflow 

Keras vs. Tensorflow - Difference Between Tensorflow and Keras

Keras and Tensorflow are two very popular deep learning frameworks. Deep Learning practitioners most widely use Keras and Tensorflow. Both of these frameworks have large community support. Both of these frameworks capture a major fraction of deep learning production.

Which framework is better for us then?

This blog will be focusing on Keras Vs Tensorflow. There are some differences between Keras and Tensorflow, which will help you choose between the two. We will provide you better insights on both these frameworks.

What is Keras?

Keras is a high-level API built on the top of a backend engine. The backend engine may be either TensorFlow, theano, or CNTK. It provides the ease to build neural networks without worrying about the backend implementation of tensors and optimization methods.

Fast prototyping allows for more experiments. Using Keras developers can convert their algorithms into results in less time. It provides an abstraction overs lower level computations.

Major Applications of Keras

• The performance of Keras is smooth on both CPU and GPU.
• Keras provides modularity, flexibility to code, extensibility, and has an adaptation for innovation and research.
• The pythonic nature of Keras makes it easy to explore and debug the code.

What is Tensorflow?

Tensorflow is a tool designed by Google for the deep learning developer community. The aim of TensorFlow was to make deep learning applications accessible to the people. It is an open-source library available on Github. It is one of the most famous libraries to experiment with deep learning. The popularity of TensorFlow is because of the ease of building and deployment of neural net models.

Major area of focus here is numerical computation. It was built keeping the processing computation power in mind. Therefore we can run TensorFlow applications on almost kind of computer.

Major applications of Tensorflow

• From mobiles to embedded devices and distributed servers Tensorflow runs on all the platforms.
• Tensorflow is the enterprise of solving real-world and real-time problems like image analysis, robotics, generating data, and NLP.
• Developers are implementing tools for translation languages and the detection of skin cancers using Tensorflow.
• Major projects using TensorFlow are Google translate, video detection, image recognition.

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