Error Message "cuda runtime error (10) : invalid device ordinal at xxx" Displayed in Logs

Symptom

A training job failed, and the following error is displayed in logs.

Figure 1 Error log

Possible Causes

The possible causes are as follows:

• The CUDA_VISIBLE_DEVICES setting does not comply with job specifications. For example, you select a job with four GPUs, and the IDs of available GPUs are 0, 1, 2, and 3. However, when you perform CUDA operations, for example tensor.to(device="cuda:7"), tensors are specified to run on GPU 7, which is beyond the available GPU IDs.
• GPUs are damaged on resource nodes if CUDA operations are performed on a GPU with a specified ID. As a result, the number of GPUs that can be detected is less than the selected specifications.

Solution

1. Perform CUDA operations on the GPUs with IDs specified by CUDA_VISIBLE_DEVICES.
2. If a GPU on a resource node is damaged, contact technical support.

Summary and Suggestions

Before creating a training job, use the ModelArts development environment to debug the training code to maximally eliminate errors in code migration.