Torch not compiled with cuda enabled windows

Keep in mind that we might have to run the command twice to confirm uninstallation.

Note: Once we see the warning: skipping torch as it is not installed warning, we will know that we have completely uninstalled PyTorch.

Installing CUDA Toolkit

The next approach is to install the NVIDIA CUDA Toolkit before installing PyTorch with CUDA support.

To accomplish this, we need to check the compatibility of our GPU with CUDA before installing the CUDA Toolkit. This is to make sure that our GPU is compatible with CUDA. We can check the list of CUDA-compatible GPUs on the NVIDIA website.

Note: To learn more about CUDA installation on your machine, visit the CUDA official documentation..

We can also install CUDA Toolkit using a Python package manager like Miniconda on Linux. We start off by downloading the Miniconda installer script for Linux from the official conda website and running the following command:

The “AssertionError: torch not compiled with CUDA enabled” can be a significant hurdle when working with PyTorch, a renowned open-source machine learning library known for its proficiency in training deep neural networks. It relies on CUDA, a parallel computing platform by NVIDIA, for efficient GPU acceleration.

In this article, we’ll explore the origins of this error, present illustrative examples, and provide a systematic approach to rectify it.

Contents

  • 1 What is AssertionError: torch not compiled with CUDA enabled?
    • 1.1 What Causes of the AssertionError: torch not compiled with CUDA?
    • 1.2 Incorrect Installation:
    • 1.3 Missing GPU Drivers:
    • 1.4 Incompatible PyTorch and CUDA Versions:
  • 2 How to resolve such error?
    • 2.1 Verifying GPU and Drivers
    • 2.2 Reinstall PyTorch with CUDA Support 
    • 2.3 Verify Installation 
    • 2.4 Set the Device 
    • 2.5 Passing the pin_memory value as false
  • 3 Solution For Mac
  • 4 Solution For Detectron2
  • 5 FAQs
    • 5.1 How do I check if my system has a compatible GPU and the necessary drivers installed?
    • 5.2 Can I use PyTorch for deep learning without CUDA support?
    • 5.3 What should I do if I encounter the “AssertionError: torch not compiled with CUDA enabled” error?
  • 6 Conclusion
  • 7 References

The error message “AssertionError: torch not compiled with CUDA enabled” serves as a clear indicator that the existing PyTorch installation is devoid of the necessary framework for CUDA support.

This essentially means that the PyTorch library has been set up in a way that it lacks the ability to offload certain computations to the GPU, which is a significant aspect of accelerating the training and inference processes of deep neural networks.

What Causes of the AssertionError: torch not compiled with CUDA?

The “AssertionError: torch not compiled with CUDA enabled” can be caused due to any of the reasons mentioned below.

Incorrect Installation:

This is one of the most common reasons for encountering the error. When PyTorch is initially installed, users must specify whether or not they want CUDA support. If CUDA support is not selected during installation, PyTorch will default to a CPU-only build.

Missing GPU Drivers:

Even if PyTorch is installed with CUDA support, it relies on NVIDIA GPU drivers to function properly. If these drivers are missing, outdated, or incompatible, it can lead to the assertion error.

Incompatible PyTorch and CUDA Versions:

Using incompatible versions of PyTorch and CUDA can also trigger this error. It’s important to ensure that the PyTorch version you’re using is compatible with the CUDA version installed on your system.

Below are few examples mentioned to explain the AssertionError: torch not compiled with CUDA more properly.

Example 1: Basic Assertion Error

In this example, a Python script (likely named example.py) is being executed. At line 5, a tensor is being created using torch.tensor([1.0, 2.0]), and then an attempt is made to move it to the GPU using .cuda().

However, an ‘AssertionError: torch not compiled with CUDA enabled’ is raised, stating that PyTorch was not compiled with CUDA support.

Traceback (most recent call last):
File "example.py", line 5, in <module>
x = torch.tensor([1.0, 2.0]).cuda()

This error indicates that the PyTorch installation being used lacks the necessary components for CUDA support. As a result, it’s unable to utilize the GPU for accelerated computations.

Example 2: Importing torch.cuda

In this example, the script starts by trying to import torch.cuda. However, it encounters an AssertionError, stating that PyTorch was not compiled with CUDA support.

Syntax:

Traceback (most recent call last):
File "example.py", line 2, in <module>
import torch.cuda

This error is caused when the code attempts to directly access torch.cuda, indicating that the PyTorch installation lacks CUDA support.

How to resolve such error?

The AssertionError: torch not compiled with CUDA more properly. can be resolved by using one of the

Verifying GPU and Drivers

Begin by confirming that your system has an NVIDIA GPU installed and check that the necessary drivers are properly installed. You can do this by running the command nvidia-smi in your terminal.

Reinstall PyTorch with CUDA Support 

To rectify this issue, you’ll need to reinstall PyTorch with CUDA enabled. Use the following pip command, replacing the version numbers with the appropriate ones for your system:

pip install torch==1.9.0+cu111 torchvision==0.10.0+cu111 torchaudio==0.9.0 -f https://download.pytorch.org/whl/torch_stable.html

This will ensure that you have a PyTorch installation with CUDA support.

Verify Installation 

After reinstalling PyTorch, you can verify if CUDA is working correctly by running a short Python script:

import torch

print(torch.cuda.is_available())

print(torch.cuda.device_count())

If CUDA is set up correctly, the script will print True for torch.cuda.is_available() and indicate the number of available GPUs.

Set the Device 

In your Python code, it’s essential to specify the device (CPU or GPU) on which tensors and models should operate. This can be done as follows:

device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
code to set the device

This line of code checks if CUDA is available and assigns the appropriate device. You can then use tensor.to(device) to move tensors to the specified device.

Passing the pin_memory value as false

Another way to resolve this error is to pass the pin_memory value in a code while using the get_iterator function. This function is used to call upon an iterator. In this process of using this function ano,ther function called pin_memory gets enabled, which usually passes the dataset while training to the GPU. Thus it should always remain true, but in some instances, it may raise the AssertionError: Torch Not Compiled With CUDA Enabled. To avoid this error, you need to pass the pin_memory value as false while calling for the get_iterator function.

Syntax:

import torch
from your_module import create_batches, get_coco_data  # Import necessary functions and modules

def get_iterator(data, batch_size=32, max_length=30, shuffle=True, num_workers=4, pin_memory=True):
    cap, vocab = data
    return torch.utils.data.DataLoader(
        cap,
        batch_size=batch_size, shuffle=shuffle,
        collate_fn=create_batches(vocab, max_length),
        num_workers=num_workers, pin_memory=pin_memory
    )


train_data = get_iterator(get_coco_data(vocab, train=True), batch_size=args.batch_size, pin_memory=False)

Solution For Mac

While working on Mac, facing this error might be different as the Mac system does not have CUDA. Thus, in the case of Mac, the best solution is to not use a .cuda() function on Mac. Instead, you can externally add NVIDIA CUDA, but it will be incompatible with the integrated intel; thus, using platforms like Google Collaborate will be beneficial.

Solution For Detectron2

For platforms like Detectron2 any of the above solutions won’t work but instead you can use the following code which can help you resolve the AssertionError: Torch Not Compiled With CUDA Enabled.

Syntax:

import torch

# Assuming cfg is a configuration object
cfg = torch.hub.load('facebookresearch/detectron2:main', 'config', 'COCO-Detection/faster_rcnn_R_50_FPN_3x.yaml')

# Set the device to CPU
cfg.MODEL.DEVICE = "cpu"

# Now you can create and use the model with CPU computation
model = torch.hub.load('facebookresearch/detectron2:main', 'model', config=cfg)

FAQs

How do I check if my system has a compatible GPU and the necessary drivers installed?

You can check if your system has an NVIDIA GPU and verify the installed drivers by running the command nvidia-smi in your terminal.

Can I use PyTorch for deep learning without CUDA support?

Yes, PyTorch can still be used on a CPU, but without CUDA, you won’t be able to leverage GPU acceleration, which can lead to slower training times for large models.

What should I do if I encounter the “AssertionError: torch not compiled with CUDA enabled” error?

To resolve this error, you should reinstall PyTorch with CUDA support. Use the appropriate pip command, making sure to specify the correct version for your system.

Conclusion

In conclusion, The “AssertionError: torch not compiled with CUDA enabled” error is a common stumbling block for those looking to harness the GPU-accelerated power of PyTorch. By ensuring a proper installation and configuration, you can unlock the full potential of your system for deep learning tasks.

Always remember to check for GPU compatibility, install the correct drivers, and verify your PyTorch installation with CUDA support. With these steps, you’ll be on your way to seamless GPU-accelerated machine learning workflows.

References

  1. AssertionError
  2. CUDA

To learn more about some common errors follow Python Clear’s errors section.

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started writing code around 20 years ago, and throughout the years, I have gained a lot of expertise from hands-on experience as well as learning from others. This website has also grown with me and is now something that I am proud of.

Torch not compiled with cuda enabled is an error you will encounter while using a PyTorch version that does not support CUDA. If PyTorch is not compiled with CUDA enabled, it means that it cannot utilize GPUs for computation acceleration.

Torch Not Compiled With Cuda Enabled

In this article, you will delve into the various causes of this error and provide practical solutions for overcoming it. By the end of this article, you will have a clear understanding of how to ensure that PyTorch is properly configured to utilize CUDA acceleration.

JUMP TO TOPIC

  • Why Am I Triggering Torch Not Compiled With Cuda Enabled?
    • – Lack of Cuda Toolkit Installation – Negative Consequences
    • – Dark Side of the Cpuonly Package and Its Impact on Pytorch
    • – Common Scenarios and Platforms That Can Trigger the Error
  • How To Solve the Torch Not Compiled With Cuda Enabled Error
    • – Installing the Cuda Toolkit: The Missing Piece to Pytorch
  • Conclusion

Why Am I Triggering Torch Not Compiled With Cuda Enabled?

You are triggering the torch not compiled with CUDA enabled error because you have installed the wrong PyTorch that does not support CUDA. If you do not specify the version of PyTorch built with CUDA support, you will end up with a version without CUDA support.

PyTorch is a popular deep-learning framework that provides support for computation acceleration using Graphics Processing Units (GPUs). To use GPUs for computation acceleration in PyTorch, you need to have the CUDA Toolkit installed on your system, as well as a version of PyTorch that has been compiled with CUDA support.

However, if you install PyTorch without specifying that you want a version with CUDA support, you will end up with a version of PyTorch that does not have CUDA support. This means that PyTorch will not be able to use GPUs for computation acceleration, and you will trigger this error.

The reason for this error is that PyTorch has different versions that are compiled with or without CUDA support. For example, there is a version of PyTorch that has been built with CUDA support for CUDA 11.0 and another version that has been built with CUDA support for CUDA 10.1.

– Lack of Cuda Toolkit Installation – Negative Consequences

The error can occur if you have not installed the CUDA Toolkit on your system. CUDA is a parallel computing platform and programming model developed by NVIDIA that enables computationally intensive applications to run on GPUs (graphics processing units) for faster performance.

PyTorch requires the CUDA Toolkit to run on GPUs. If you don’t have the CUDA Toolkit installed, you’ll get the error when you try to run PyTorch code that uses CUDA.

If you have an NVIDIA GPU in your machine, but have not installed the NVIDIA CUDA Toolkit and a version of PyTorch with CUDA support. In that case, you may encounter this error when you run a PyTorch script that uses CUDA acceleration.

On the other hand, if your machine does not have an NVIDIA GPU, you cannot use CUDA with PyTorch. Attempting to run a PyTorch script with CUDA acceleration will trigger the error.

As well, if you have created a virtual environment for your PyTorch project, and you have not installed the NVIDIA CUDA Toolkit and a version of PyTorch with CUDA support in the virtual environment, you may encounter this error when you run a PyTorch script that uses CUDA acceleration.

In addition, if you are running a PyTorch script in a cloud-based platform such as Amazon AWS, Google Cloud, or Microsoft Azure, and you have not enabled CUDA support in the platform, you may encounter this error when you run a PyTorch script that uses CUDA acceleration.

– Dark Side of the Cpuonly Package and Its Impact on Pytorch

The cpuonly package is a PyTorch package that is specifically designed to run on CPUs. This package is designed to prevent CUDA-specific features from being installed or enabled, as CUDA is not supported in this case.

Problem/Solution Content-Humayun - Reasons of Sslerror

The error under consideration arises when users try to run CUDA-based code while having the cpuonly package installed, as this package is effectively disabling CUDA support. As a result, the code will raise the AssertionError torch not compiled with CUDA enabled error.

– Common Scenarios and Platforms That Can Trigger the Error

Here are a few examples of scenarios and platforms where you may trigger the error:

  • Torch not compiled with cuda enabled mac: This error in the context of a Mac refers to the same issue as in any other context. It indicates that the version of PyTorch installed on the Mac does not have CUDA support.
  • Assertionerror: torch not compiled with cuda enabled conda: This error in the conda environment indicates that the version of PyTorch installed in the conda environment does not have CUDA support.
  • Torch not compiled with cuda enabled AMD: The error in the context of an AMD system shows that the version of PyTorch installed on the AMD system does not have CUDA support.
  • Torch not compiled with cuda enabled kaggle: The error in the context of Kaggle indicates that the version of PyTorch installed on the Kaggle environment does not have CUDA support, which is required for acceleration of computations using the GPU.
  • Torch not compiled with cuda enabled mac m1: The error in a Mac M1 indicates that the version of PyTorch installed on the Mac M1 device does not have CUDA support.
  • Torch not compiled with cuda enabled stable diffusion: The error in the context of Stable Diffusion indicates that the version of PyTorch installed on the system does not have CUDA support, which is necessary for acceleration of computations using the GPU.
  • Assertionerror: torch not compiled with cuda enabled jetson: This error in the context of Jetson shows that the version of PyTorch installed on the Jetson device does not have CUDA support.
  • Assertionerror: torch not compiled with cuda enabled detectron2: The error in the context of Detectron2 indicates that the version of PyTorch installed on your system does not have CUDA support. Detectron2 is a computer vision toolkit built on top of PyTorch, and it requires that PyTorch be installed with CUDA support.

How To Solve the Torch Not Compiled With Cuda Enabled Error

You can solve torch not compiled with cuda enabled error by completely reinstalling PyTorch with CUDA support. To accomplish this, you need to completely remove the current version of PyTorch. You can do this by running the following command in your terminal or command prompt: pip uninstall torch.



Keep in mind that you may have to run the command several times (usually twice). Once you see the warning: skipping torch as it is not installed, you will know that you have completely uninstalled the torch.

Next, you need to Install the NVIDIA CUDA Toolkit before installing PyTorch with CUDA support. You can find a free download of the latest version of the CUDA Toolkit from the NVIDIA website and follow the installation instructions.

After installing the NVIDIA CUDA Toolkit, you now need to install PyTorch with CUDA support by running the following command in your terminal or command prompt:

pip install torch torchvision cudatoolkit=<CUDA version>

Replace “<CUDA version>” with the version of CUDA that you have installed. Lastly, you need to verify that PyTorch has been installed with CUDA support.

To do this run the following code snippet in your Python environment:

import torch

print(torch.cuda.is_available())

If the output of the code snippet is True, it means that PyTorch has been installed with CUDA support.

Reinstalling PyTorch with CUDA support will solve the error, but it’s important to make sure that your system is set up correctly, and that you have the necessary hardware and software components installed and configured properly.

– Installing the Cuda Toolkit: The Missing Piece to Pytorch

Another way you can resolve this issue is by installing the CUDA Toolkit. To accomplish this, you need to check the compatibility of your GPU with CUDA before installing the CUDA Toolkit. This is to make sure that your GPU is compatible with CUDA. You can check the list of CUDA-compatible GPUs on the NVIDIA website.

Problem/Solution Content-Humayun - Reasons of Sslerror

Next, download the CUDA Toolkit from the NVIDIA website. Make sure to download the version that’s compatible with your operating system and GPU. After downloading the toolkit, install it. Follow the instructions provided by NVIDIA to install the CUDA Toolkit on your system.

After installing the CUDA Toolkit, you need to set up the environment variables to make sure that PyTorch can find the CUDA libraries.

The exact steps to set up the environment variables depend on your operating system and the version of the CUDA Toolkit you have installed. Once you have installed the CUDA Toolkit, you can reinstall PyTorch with CUDA support.

Conclusion

In this article, you have explored the various causes and solutions to this error, highlighting the importance of CUDA Toolkit installation and compatibility with the GPU and platform you are using. Here is a quick recap of what you have learned:

  • The main cause of this error is installing incorrect PyTorch package.
  • Other causes include lack of CUDA toolkit and installing the cpuonly package.
  • To solve this error, you have to completely reinstall PyTorch with CUDA.
  • Other solutions include installing the CUDA Toolkit and removing the cpuonly package.

With this information, you can resolve this issue and take full advantage of PyTorch and CUDA in your projects.

If you’re a data scientist or a software engineer working with deep learning frameworks, you may have encountered the following error message: ‘AssertionError: Torch not compiled with CUDA enabled.’ This error occurs when you try to use Torch with CUDA, but the framework has not been compiled with CUDA support.

By Saturn Cloud |

| Data Science & ML
| Updated:

If you’re a data scientist or a software engineer working with deep learning frameworks, you may have received an error message stating, “AssertionError: Torch not compiled with CUDA enabled.” In programming, an assertion is a statement that a programmer confidently declares true. When this condition fails or doesn’t hold true, an AssertionError is triggered.

In this context, the error message implies that the Torch framework was expected to be compiled with CUDA (Compute Unified Device Architecture) support, a crucial requirement for certain deep learning operations. This problem usually arises when you try to use Torch with CUDA, but the Torch framework is not compiled with CUDA support.

Despite possessing hardware that supports CUDA, not having your deep learning software framework compiled or installed with CUDA compatibility can significantly limit your workflow’s performance. Not leveraging CUDA’s capacity means you’re missing out on significant performance gains that can drastically expedite your deep learning operations.

As they say, the devil is in the details. Understanding this error is the first step; resolving it comes next. This article will explore the CUDA’s importance for deep learning, how to verify if your Torch installation is CUDA-compatible, and how to overcome the “AssertionError: Torch not compiled with CUDA enabled” error.

What is CUDA?

Compute Unified Device Architecture (CUDA) is a parallel computing platform and application programming interface (API) developed by NVIDIA. It allows developers to use the power of NVIDIA GPUs (graphics processing units) for general-purpose computing, including deep learning.

Deep learning algorithms require performing a vast amount of computations, and GPUs—with their high parallelization capabilities—are remarkably suited to handle these tasks better than Central Processing Units (CPUs). But what makes GPUs superior? Unlike CPUs that have a few cores optimized for sequential serial processing, GPUs have hundreds of cores designed for handling multiple tasks simultaneously.

CUDA provides developers with the tools and functionalities needed to harness the raw computational power of NVIDIA’s GPUs. It allows developers to direct specific computing tasks to the more efficient GPU rather than the CPU. Developers can write code that is executed on the GPU, shifting the workload from being CPU-intensive to being GPU-intensive, allowing for much faster execution. Popular deep learning frameworks like PyTorch and TensorFlow have built-in CUDA support, enabling coders to train complex models on GPUs with relative ease, dramatically reducing processing time and boosting overall efficiency.

Before deep-diving into the particulars of the AssertionError, it’s important to double-check your system setup. Start with confirming hardware compatibility, ensuring necessary software packages and drivers are properly installed, and that your system components interact correctly. From here, you can determine if the error you’re receiving is from your environment or the deep learning framework you have compiled or downloaded.

Confirming GPU Drivers are Installed

For CUDA to work correctly, drivers must be installed to allow the API to interface with the driver, which interfaces with the GPU itself. To confirm if your GPU drivers are installed and functioning correctly, use the nvidia-smi command.

nvidia-smi (System Management Interface) is a tool incorporated into the NVIDIA driver package. This utility allows users to monitor and manage various attributes of their GPU. If you can output something similar to the output displayed below, this shows that you can query the GPU and that GPU drivers are installed properly.

$ nvidia-smi

+---------------------------------------------------------------------------------------+

| NVIDIA-SMI 535.103 Driver Version: 537.13 CUDA Version: 12.2 |

|-----------------------------------------+----------------------+----------------------+

| GPU Name Persistence-M | Bus-Id Disp.A | Volatile Uncorr. ECC |

| Fan Temp Perf Pwr:Usage/Cap | Memory-Usage | GPU-Util Compute M. |

|  |  | MIG M. |

|=========================================+======================+======================|

| 0 NVIDIA GeForce RTX 3090 On | 00000000:0A:00.0 On | N/A |

| 0% 44C P5 36W / 350W | 3277MiB / 24576MiB | 34% Default |

|  |  | N/A |

+-----------------------------------------+----------------------+----------------------+

  

+---------------------------------------------------------------------------------------+

| Processes: |

| GPU GI CI PID Type Process name GPU Memory |

| ID ID Usage |

|=======================================================================================|

| 0 N/A N/A 20 G /Xwayland N/A |

| 0 N/A N/A 22 G /Xwayland N/A |

| 0 N/A N/A 23 G /Xwayland N/A |

+---------------------------------------------------------------------------------------+

To use it, open a terminal, type nvidia-smi, and press “Enter.” If your GPU drivers are correctly installed, this command will provide information about the GPU model, utilization, memory usage, the active GPU processes, and the driver version, among other details. On the top right corner of the output, you’ll notice a CUDA version mentioned there. Take note of this CUDA version, as this is the maximum supported version the driver can support. In other words, any CUDA version equal to or lower than this version will be supported by this driver.

If you cannot query nvidia-smi, download Nvidia drivers here to prepare for installation. If you need to install both Nvidia drivers and CUDA. In that case, it is much easier to use the instructions in the next section to install CUDA, as the installation process will also automatically install the necessary drivers.

If you’re having issues installing Nvidia drivers due to an older version existing on your system, you can forcefully purge all Nvidia drivers using this command: sudo apt-get --purge remove "*nvidia*".

With your GPU being detected, the next step is to ensure your system correctly detects CUDA. In addition to ensuring CUDA’s presence on your system, it’s crucial to ensure the CUDA version installed is compatible with your GPU’s architecture. Each CUDA version is designed to exploit features specific to different GPU architectures, known as Compute Capability (sm versions). The CUDA version must support your GPU’s “Compute Capability” to function.

For instance, Nvdia’s 30 series cards (Ampere architecture) cannot operate under CUDA 11, as the compute capabilities for the architecture are supported starting at CUDA 11. As an interesting note, newer CUDA versions allow for backward compatibility, allowing older compiled CUDA programs to run on newer CUDA versions, but not the other way around. In other words, if we had Tensorflow or PyTorch installed with CUDA 10 support in our example, we are essentially telling our 30 series GPU to run in a CUDA 10 environment.

We will then take this CUDA version and check to see if your GPU architecture is compatible with this CUDA version support table here.

Choosing your CUDA Version

The next check we’ll do is to ensure your deep learning framework supports your CUDA version. This is especially important if you use prebuilt binaries (i.e., installing via pip or another online source). If you would like to build PyTorch or Tensorflow from source, these guides can be found in the additional resources at the bottom of this blog post. Building these frameworks from source will give you the most optimal performance for your system and allow you more flexibility in which CUDA version you would like the deep learning framework to utilize.

Checking CUDA compatibility with your framework can be done by referencing the deep learning framework’s compatibility table:

  • For Tensorflow: https://www.tensorflow.org/install/source#gpu

    • Note: Tensorflow requires the installation of cuDNN and CUDA (TensorRT is optional)
  • For PyTorch: https://pytorch.org/get-started/locally/

    • Older versions can be found here.

    • Note: Tensorflow requires the installation of cuDNN and CUDA (TensorRT is optional).

    • Note: You may notice that PyTorch installations always have an additional package installed that contains the specific CUDA library that the PyTorch version was built with. PyTorch will always opt to use this version over the default CUDA version on your system. Just make sure your driver supports the CUDA version!

Once you know which CUDA version to use, proceed to the following sections.

Removing All Nvidia Libraries (Optional)

If you’re having issues installing CUDA-related libraries due to previous installations, you can purge these libraries:

  • For CUDA-related libraries: sudo apt-get --purge remove "*cublas*" "cuda*" "nsight*"

  • For the Nvidia driver: sudo apt-get --purge remove "*nvidia*"

Verifying CUDA on the System

You can check the presence of CUDA primarily through the command line. Run this command: nvcc --version. ‘nvcc’ stands for the NVIDIA CUDA Compiler. It should return details about the installed CUDA compilation tools, including the version number. If the system responds that the command isn’t recognized, it could indicate that CUDA is not installed or correctly set up. If you are confident that you have installed CUDA, but the command is not working, make sure you add CUDA to your system path:

  1. Enter sudo nano ~/.bashrc in your terminal.

  2. Add these lines into ~/.bashrc:

    a. export PATH=/usr/local/cuda/bin:$PATH

    b. export LD_LIBRARY_PATH=/usr/local/cuda/lib64:$LD_LIBRARY_PATH

  3. Source your new ~/.bashrc file to apply changes: source ~/.bashrc.

If you still need to install CUDA and/or Nvidia drivers, click here. If you would like an older CUDA version, check here. From experience, I always recommend the “deb (network)” installation option since upgrading and package maintenance are done automatically via apt upgrade.

Verifying cuDNN on the System

cuDNN, or CUDA Deep Neural Network library, is a crucial component for running deep learning frameworks. This GPU-accelerated library designed by NVIDIA is highly optimized for deep neural network computations and is typically used with the CUDA software stack.

The simplest way to check the cuDNN version installed in your system is through the command line. The header file cudnn.h contains the version number. You just have to find this file and view the version information.

cat /usr/local/cuda/include/cudnn.h | grep CUDNN_MAJOR -A 2

Ensure to replace /usr/local/cuda with your CUDA installation path if it’s installed in a non-default location.

The command will output a few lines containing the cuDNN version information:

#define CUDNN_MAJOR 8

#define CUDNN_MINOR 0

#define CUDNN_PATCHLEVEL 4

It’s also essential to ensure your cuDNN version is compatible with your CUDA version. You can reference compatibility by checking the cuDNN Support Matrix here.

If you do not have cuDNN installed on your system, click here for installation steps.

If your system has passed all the checks above, there is a high likelihood that you might have an issue with the variant of the prebuilt framework binary you have installed. The following checks are below to ensure your framework matches your system’s installed libraries.

Checking Framework for CUDA support

Prebuilt binaries are compiled and linked to specific CUDA versions and libraries. Therefore, your system must have those available for that particular framework’s version. For convenience:

  • For Tensorflow: https://www.tensorflow.org/install/source#gpu

    • Note: Tensorflow requires the installation of cuDNN and CUDA (TensorRT is optional)
  • For PyTorch: https://pytorch.org/get-started/locally/

    • Older versions can be found here.

    • Note: Tensorflow requires the installation of cuDNN and CUDA (TensorRT is optional).

    • Note: You may notice that PyTorch installations always have an additional package installed that contains the specific CUDA library that the PyTorch version was built with. PyTorch will always opt to use this version over the default CUDA version on your system. Just make sure your driver supports the CUDA version!

Torch

To check if your Torch installation has CUDA support, you can run the following command in a Python shell:

import  torch

print(torch.cuda.is_available())

If the output of this command is True, then Torch has been compiled with CUDA support, and you should be able to use it with the GPU. If the output is False, Torch does not have CUDA support, and you will need to either install the correct binary with the correct CUDA version or recompile it with your current CUDA version.

TensorFlow

Just as with PyTorch, you can also check CUDA’s availability on your system using TensorFlow.

To verify, type this into a Python shell:

import tensorflow as tf

print("CUDA Available: ", tf.test.is_gpu_available(cuda_only=False, min_cuda_compute_capability=None))

If your system is correctly set up with CUDA, this command should return “CUDA Available: True.” If not, it will return “CUDA Available: False,” indicating that TensorFlow does not have access to CUDA on your system.

Note: if tf.test.is_gpu_available() is deprecated and will be removed in a newer version, you can use: tf.config.list_physical_devices('GPU').

Installing the Correct Package Variant

If you have a previous installation of the deep learning framework you wish to install, make sure you pip uninstall the package. To ensure you are installing the correct prebuilt binary for your package, adhere to the following pip commands:

  • For Tensorflow: https://www.tensorflow.org/install/pip#package_location

    • Select the correct .whl file that describes your system. Right-click on the link of the .whl and use it in your pip install command.

    • i.e., pip install https://storage.googleapis.com/tensorflow/linux/gpu/tensorflow-2.13.0-cp38-cp38-manylinux_2_17_x86_64.manylinux2014_x86_64.whl

  • For PyTorch: https://pytorch.org/get-started/locally/

    • Older versions can be found here.

    • Use the commands listed on the page, depending on your environment.

After you have installed the correct variant with CUDA support, you should be able to use your GPU without encountering the “AssertionError: Torch not compiled with CUDA enabled” error.

Conclusion

In this article, we’ve dissected the crucial role CUDA plays in deep learning, verifying CUDA support in Torch, and rectifying the “AssertionError: Torch not compiled with CUDA enabled” error.

Compiling libraries like Torch or TensorFlow from source can provide several tangible benefits. It allows you to potentially enhance performance by creating binaries optimized for your specific hardware configuration. Additionally, it enables using the latest, possibly unreleased, features and improvements directly from the library’s repository. Furthermore, it offers the flexibility to customize the library in terms of features, functionality, and links to alternative library versions like CUDA, cuDNN, and much more.

Indeed, this process can be more complex and time-consuming than pre-compiled binaries. Still, the granular control and potential performance gains can often outweigh these challenges, especially in a research or production environment.

By following the outlined steps, you’re strengthening your foundation to unlock the true potential of GPUs for deep learning. The ability to train deep learning models with CUDA support can significantly elevate computation speed compared to a CPU alone. This acceleration enables quicker iterations and experimentations, leading to more efficient and effective deep learning model development. Embracing these practices could be transformational in your deep learning journey.

Additional Resources

  • Compiling Tensorflow from Source

  • Compiling Torch from Source

  • Training a PyTorch Model across a Dask Cluster

  • Train a PyTorch model with a GPU on Saturn Cloud


About Saturn Cloud

Saturn Cloud is your all-in-one solution for data science & ML development, deployment, and data pipelines in the cloud. Spin up a notebook with 4TB of RAM, add a GPU, connect to a distributed cluster of workers, and more. Request a demo today to learn more.

Saturn Cloud provides customizable, ready-to-use cloud environments for collaborative data teams.

Try Saturn Cloud and join thousands of users moving to the cloud without
having to switch tools.

Upgrading your CUDA version can be an exciting endeavor, as it often brings new features and performance improvements to your GPU-accelerated applications. However, sometimes this upgrade can lead to unexpected errors, such as the ‘AssertionError: Torch not compiled with CUDA enabled’. This error typically occurs when there is a mismatch between the CUDA version and the Torch library you are using. In this article, we will explore the concepts behind this error and provide troubleshooting steps to resolve it.

Understanding the ‘AssertionError: Torch not compiled with CUDA enabled’ Error

The ‘AssertionError: Torch not compiled with CUDA enabled’ error message indicates that the Torch library you are using was not compiled with CUDA support. Torch is a popular open-source machine learning library that provides GPU acceleration for deep learning tasks. To take advantage of GPU acceleration, Torch needs to be compiled with CUDA enabled, which allows it to utilize the parallel computing capabilities of NVIDIA GPUs.

When you upgrade your CUDA version, it is crucial to ensure that your Torch library is compatible with the new CUDA version. If the Torch library was not compiled with CUDA enabled, it will not be able to utilize the GPU, resulting in the ‘AssertionError’ error.

Troubleshooting Steps

To troubleshoot the ‘AssertionError: Torch not compiled with CUDA enabled’ error, follow these steps:

1. Check CUDA Version: Verify that the CUDA version installed on your system matches the version required by the Torch library. You can do this by running the command 'nvcc --version' in your terminal. Make sure the CUDA version matches the requirements specified by the Torch documentation.

2. Check Torch Installation: Ensure that you have installed the Torch library correctly. It is recommended to use a package manager like pip or conda to install Torch, as they handle the dependencies and compilation process automatically. If you have manually installed Torch, make sure you followed the instructions provided by the official Torch documentation.

3. Reinstall Torch: If you have confirmed that your CUDA version and Torch installation are compatible, but the error persists, try reinstalling Torch. Sometimes, the installation process may not have completed successfully, leading to missing or incorrect configurations. Reinstalling Torch can help resolve such issues.

4. Verify CUDA Toolkit Configuration: Check if the CUDA Toolkit is properly configured on your system. Ensure that the necessary environment variables, such as 'CUDA_HOME' and 'LD_LIBRARY_PATH,' are correctly set. These variables are essential for Torch to locate the CUDA libraries and enable GPU support.

5. Update Torch: If you are using an older version of Torch, consider updating it to the latest version. Newer versions often include bug fixes and compatibility improvements that may resolve the 'AssertionError' error.

6. Seek Community Support: If none of the above steps resolve the issue, it can be helpful to seek support from the Torch community. Online forums, mailing lists, and GitHub repositories dedicated to Torch can provide valuable insights and assistance from experienced users and developers.

By following these troubleshooting steps, you should be able to resolve the ‘AssertionError: Torch not compiled with CUDA enabled’ error and successfully utilize GPU acceleration in your Torch-based applications.

Remember, when upgrading CUDA or any other software component, it is essential to ensure compatibility between different versions. Keeping your software stack up to date and following the recommended installation procedures will help avoid compatibility issues and ensure a smooth experience with GPU-accelerated computing.

Example 1:

If you encounter the “AssertionError: Torch not compiled with CUDA enabled” error after upgrading CUDA, one possible solution is to reinstall PyTorch with the correct CUDA version. First, uninstall the current PyTorch version by running the following command:

pip uninstall torch

Then, install PyTorch again with the desired CUDA version using the appropriate command. For example, if you have upgraded to CUDA 11.2, you can install PyTorch with CUDA support by running:

pip install torch==1.8.0+cu112 -f https://download.pytorch.org/whl/torch_stable.html

This will ensure that PyTorch is compiled with the correct CUDA version and resolve the “AssertionError” issue.

Example 2:

In some cases, the “AssertionError: Torch not compiled with CUDA enabled” error may occur due to incompatible versions of CUDA and cuDNN. To troubleshoot this issue, you can try reinstalling cuDNN with the correct version that matches your CUDA installation. First, uninstall the current cuDNN version by deleting the corresponding files.

Next, download the cuDNN version compatible with your CUDA installation from the NVIDIA website. Extract the downloaded archive and copy the necessary files to the appropriate CUDA directories.

After reinstalling cuDNN, restart your Python environment and try running your code again. This should resolve the “AssertionError” error related to CUDA and cuDNN compatibility.

Conclusion:

Upgrading CUDA can sometimes lead to compatibility issues with other libraries, such as PyTorch. The “AssertionError: Torch not compiled with CUDA enabled” error is a common problem that occurs after a CUDA upgrade. To troubleshoot this issue, it is important to ensure that PyTorch is installed with the correct CUDA version and that CUDA and cuDNN are compatible.

By following the examples provided and reinstalling PyTorch or cuDNN with the appropriate versions, you can resolve the “AssertionError” error and ensure that your code can utilize CUDA for accelerated GPU computations. It is always recommended to check the official documentation and forums for the specific libraries to get the most up-to-date information and solutions for compatibility issues.

References:

  • PyTorch official website: https://pytorch.org/
  • NVIDIA CUDA Toolkit documentation: https://docs.nvidia.com/cuda/
  • NVIDIA cuDNN documentation: https://docs.nvidia.com/deeplearning/cudnn/

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