Horovod Horovod fails with 'operation not supported'

Attempting to use an operation that is not supported in the current environment.

Thank you! Your submission has been received!

Oops! Something went wrong while submitting the form.

What is

Horovod Horovod fails with 'operation not supported'

?

Understanding Horovod: A Distributed Deep Learning Framework

Horovod is an open-source distributed deep learning framework created by Uber. It is designed to make distributed deep learning fast and easy to use. Horovod achieves this by leveraging the MPI (Message Passing Interface) or NCCL (NVIDIA Collective Communications Library) for efficient communication between nodes. This allows data scientists and engineers to scale their training workloads across multiple GPUs and nodes seamlessly.

Identifying the Symptom: 'Operation Not Supported'

When using Horovod, you might encounter an error message stating: operation not supported. This error typically occurs when attempting to execute a function or operation that is not available in the current environment. This can be frustrating, especially when you are in the middle of training a model.

Exploring the Issue: Why Does This Error Occur?

The 'operation not supported' error in Horovod usually arises due to incompatibilities or missing features in the environment where Horovod is running. This could be due to a mismatch in the versions of Horovod, MPI, or NCCL, or because certain operations are not implemented in the version of Horovod you are using. It is crucial to ensure that all components of your distributed training setup are compatible and correctly configured.

Common Causes

Incompatible versions of Horovod and MPI/NCCL.
Missing support for specific operations in the installed version of Horovod.
Incorrect environment setup or configuration.

Steps to Fix the 'Operation Not Supported' Issue

Resolving this issue involves verifying and updating your environment to ensure compatibility and support for the required operations.

Step 1: Verify Horovod and MPI/NCCL Versions

Ensure that you are using compatible versions of Horovod and MPI/NCCL. You can check the installed versions using the following commands:

horovodrun --version mpirun --version nvidia-smi

Refer to the Horovod installation guide for the recommended versions.

Step 2: Update Your Environment

If you find any version mismatches, update your environment. You can reinstall Horovod with the correct dependencies using:

pip uninstall horovod HOROVOD_WITH_MPI=1 pip install --no-cache-dir horovod

Ensure that your MPI or NCCL installations are up-to-date as well.

Step 3: Check for Unsupported Operations

Review your code to identify any operations that might not be supported in your current Horovod setup. Consult the Horovod GitHub repository for a list of supported operations and features.

Conclusion

By ensuring compatibility between Horovod and its dependencies, and verifying that your code only uses supported operations, you can resolve the 'operation not supported' error. For further assistance, consider reaching out to the Horovod community or checking the official documentation.

Attached error:

Horovod Horovod fails with 'operation not supported'

Thank you! Your submission has been received!

Oops! Something went wrong while submitting the form.

Master

Horovod

debugging in Minutes

— Grab the Ultimate Cheatsheet

(Perfect for DevOps & SREs)

Most-used commands

Real-world configs/examples

Handy troubleshooting shortcuts

Thankyou for your submission

We have sent the cheatsheet on your email!

Oops! Something went wrong while submitting the form.

Horovod

Cheatsheet

(Perfect for DevOps & SREs)

Most-used commands

Thankyou for your submission

We have sent the cheatsheet on your email!

Oops! Something went wrong while submitting the form.

MORE ISSUES

Horovod Horovod fails with 'network is unreachable'

Network cannot be reached from the current location.

Horovod Horovod fails with 'network is down'

Network is not operational.

Horovod Horovod fails with 'no buffer space available'

Insufficient buffer space for the operation.

Horovod Horovod fails with 'wrong medium type'

Attempting to access a medium with an incorrect type.

Horovod Horovod fails with 'operation not supported'

Attempting to use an operation that is not supported in the current environment.

Horovod Horovod fails with 'transport endpoint is not connected'

Network endpoint is not properly connected.

Horovod Horovod fails with 'value too large for defined data type'

Attempting to use a value that exceeds the limits of the data type.

Horovod Horovod fails with 'text file busy'

Attempting to modify a file that is currently being executed.

Horovod Horovod fails with 'stale file handle'

Attempting to access a file that has been deleted or moved.

Horovod Horovod fails with 'software caused connection abort'

Network connection was aborted by the software.

Horovod Horovod fails with 'operation canceled'

Operation was canceled, possibly due to a timeout or user intervention.

Horovod Horovod fails with 'resource busy'

Attempting to access a resource that is currently in use.

Horovod Horovod fails with 'protocol error'

Mismatch in communication protocol between processes.

Horovod Horovod fails with 'not enough space'

Insufficient disk space for operation.

Horovod Horovod fails with 'memory allocation failed'

Insufficient memory available for allocation.

Horovod Horovod fails with 'invalid device ordinal'

Using an invalid or non-existent device ID.

Horovod Horovod fails with 'device not ready'

Attempting to use a device that is not yet initialized or ready.

Horovod Horovod fails with 'function not implemented'

Attempting to use a function that is not supported in the current environment.

Horovod Horovod fails with 'too many open files'

Exceeding the system limit for open file descriptors.

Horovod Horovod fails with 'timed out'

Operation took too long to complete, possibly due to network latency.

Horovod Horovod fails with 'out of range'

Attempting to access an index or memory location that is out of range.

Horovod Horovod fails with 'invalid argument'

Incorrect arguments passed to a function or operation.

Horovod Horovod fails with 'no such device'

Attempting to access a non-existent device.

Horovod Horovod fails with 'operation not permitted'

Attempting an operation without the necessary privileges.

Horovod Horovod fails with 'invalid device function'

Mismatch between the compiled CUDA code and the GPU architecture.

Horovod Horovod fails with 'file not found'

Missing file or incorrect file path.

Horovod Horovod fails with 'permission denied'

Insufficient permissions to access a resource.

Horovod Horovod fails with 'connection reset by peer'

Network connection was unexpectedly closed.

Horovod Horovod fails with 'broken pipe'

Communication failure between processes.

Horovod Horovod fails with 'address already in use'

Port conflict with another process.

Horovod Horovod fails with 'resource temporarily unavailable'

Insufficient system resources or limits reached.

Horovod Horovod fails with 'unreachable code'

Bug in the Horovod code or incorrect usage of the API.

Horovod Horovod fails with 'unknown error'

General error, possibly due to incorrect configuration or environment.

Horovod Horovod cannot find CUDA

CUDA is not installed or not in the system PATH.

Horovod Horovod cannot find MXNet

MXNet is not installed or not in the Python environment.

Horovod Horovod cannot find PyTorch

PyTorch is not installed or not in the Python environment.

Horovod Horovod cannot find TensorFlow

TensorFlow is not installed or not in the Python environment.

Horovod Horovod performance is suboptimal

Inefficient network configuration or suboptimal hardware utilization.

Horovod Horovod cannot find NCCL

NCCL is not installed or not in the system PATH.

Horovod Horovod crashes with 'illegal memory access'

Accessing memory that is not allocated or out of bounds.

Horovod Inconsistent tensor sizes for allreduce

Mismatch in tensor sizes across different processes.

Horovod Horovod cannot find MPI

MPI is not installed or not in the system PATH.

Horovod Horovod installation fails

Missing dependencies or incorrect Python environment.

Horovod Horovod version mismatch

Different Horovod versions installed on different nodes.

Horovod CUDA out of memory error

Model or batch size is too large for the available GPU memory.

Horovod Horovod stalls during allreduce

Network issues or insufficient bandwidth.

Horovod Horovod cannot find GPU devices

CUDA is not properly installed or configured.

Horovod MPI_Init failed

Incorrect MPI installation or configuration.

Horovod Segmentation fault during training

Memory access violation, possibly due to incorrect tensor shapes or sizes.

Horovod NCCL error: unhandled system error

Incompatibility between NCCL version and CUDA version.

Horovod Horovod hangs during initialization

Mismatch in the number of processes specified and the number of available GPUs.

Backed by

Resources

Contact

Platform

Connect

Deep Sea Tech Inc. — Made with ❤️ in & 🏢

Doctor Droid