Cloud Provider or Bare Metal

Oct 13, 2025 by wbrum.org 56 views

Kepler Latest Logs: Uncovering the Mystery of GRACE HOPPER and Grace GPU Power

In this article, we will delve into the world of Kepler logs and explore a peculiar issue that has been reported by users. When using the latest Kepler deployment on a BM OCP cluster, the logs reveal a message that reads "Using GRACE HOPPER to obtain Grace GPU power." However, this message is logged even when there is no GPU available on the cluster. In this article, we will investigate this issue, understand the expected behavior, and provide a step-by-step guide on how to reproduce it.

What Happened?

When using the latest Kepler deployment on a BM OCP cluster, the logs contain a message that reads "Using GRACE HOPPER to obtain Grace GPU power." This message is logged even when there is no GPU available on the cluster. This behavior is unexpected and has raised concerns among users.

What Did You Expect to Happen?

Kepler should not log "Using GRACE HOPPER to obtain Grace GPU power" when it is not possible to establish a connection to a GPU. This is because the message implies that Kepler is attempting to utilize a GPU, which is not available in this scenario.

How Can We Reproduce It?

To reproduce this issue, follow these steps:

Get a BM machine/cluster: Obtain a Bare Metal (BM) machine or cluster.
Deploy Kepler latest: Deploy the latest version of Kepler on the BM cluster.
Check logs and grep for "Using GRACE HOPPER to obtain Grace GPU power": Use the grep command to search for the message "Using GRACE HOPPER to obtain Grace GPU power" in the Kepler logs.

Additional Information

Kepler Image Tag

The latest Kepler image tag is <details>latest</details>.

Kubernetes Version

The Kubernetes version is not specified in the provided information.

Cloud Provider or Bare Metal

The cloud provider or bare metal is BM.

OS Version

The OS version is not specified in the provided information.

Install Tools

No additional tools are required to reproduce this issue.

Kepler Deployment Config

For on-kubernetes deployments, the Kepler deployment config can be obtained using the following command:

$ KEPLER_NAMESPACE=kepler
$ kubectl get configmap kepler-cfm -n ${KEPLER_NAMESPACE}
$ kubectl describe deployment kepler-exporter -n ${KEPLER_NAMESPACE}

For standalone deployments, the Kepler command argument can be provided.

Container Runtime (CRI) and Version (if Applicable)

No container runtime or version information is provided.

Related Plugins (CNI, CSI, ...) and Versions (if Applicable)

No related plugins or versions information is provided.

In this article, we have investigated the issue of Kepler logging "Using GRACE HOPPER to obtain Grace GPU power" even when there is no GPU available on the cluster. We have provided a step-by-step guide on how to reproduce this issue and highlighted the expected behavior. By understanding this issue, users can take necessary steps to troubleshoot and resolve the problem.

Troubleshooting Tips

Check the Kepler deployment config to ensure that the GPU is not being utilized.
Verify that the Kubernetes version is up-to-date.
Review the container runtime and version information to ensure that it is compatible with the Kepler deployment.
Check the related plugins and versions information to ensure that they are compatible with the Kepler deployment.

In future releases, Kepler should be modified to log a more informative message when a GPU is not available. This will help users to better understand the issue and take necessary steps to troubleshoot and resolve the problem.

Kepler Documentation
BM OCP Cluster Documentation
Kepler Latest Logs: Q&A

In our previous article, we explored the issue of Kepler logging "Using GRACE HOPPER to obtain Grace GPU power" even when there is no GPU available on the cluster. In this article, we will provide a Q&A section to address some of the frequently asked questions related to this issue.

Q: What is GRACE HOPPER?

A: GRACE HOPPER is a container runtime that provides a way to run containers on a cluster. It is designed to provide a high-performance and scalable way to run containers.

Q: Why is Kepler logging "Using GRACE HOPPER to obtain Grace GPU power" even when there is no GPU available?

A: Kepler is logging this message because it is attempting to utilize a GPU, but it is not available on the cluster. This can happen when the Kepler deployment is not properly configured or when the GPU is not available on the cluster.

Q: How can I troubleshoot this issue?

A: To troubleshoot this issue, you can follow these steps:

Check the Kepler deployment config to ensure that the GPU is not being utilized.
Verify that the Kubernetes version is up-to-date.
Review the container runtime and version information to ensure that it is compatible with the Kepler deployment.
Check the related plugins and versions information to ensure that they are compatible with the Kepler deployment.

Q: What are some common causes of this issue?

A: Some common causes of this issue include:

Incorrect Kepler deployment config: If the Kepler deployment config is not properly configured, it can lead to this issue.
Outdated Kubernetes version: If the Kubernetes version is not up-to-date, it can lead to this issue.
Incompatible container runtime: If the container runtime is not compatible with the Kepler deployment, it can lead to this issue.
Missing or incompatible plugins: If the related plugins are not available or are not compatible with the Kepler deployment, it can lead to this issue.

Q: How can I prevent this issue from occurring in the future?

A: To prevent this issue from occurring in the future, you can follow these best practices:

Regularly update the Kepler deployment config: Regularly update the Kepler deployment config to ensure that it is properly configured.
Keep the Kubernetes version up-to-date: Keep the Kubernetes version up-to-date to ensure that it is compatible with the Kepler deployment.
Review the container runtime and version information: Review the container runtime and version information to ensure that it is compatible with the Kepler deployment.
Check the related plugins and versions information: Check the related plugins and versions information to ensure that they are compatible with the Kepler deployment.

Q: What are some additional resources that I can use to troubleshoot this issue?

A: Some additional resources that you can use to troubleshoot this issue include:

Kepler documentation: The Kepler documentation provides detailed information on how to troubleshoot and resolve issues related to the Kepler deployment.
BM OCP Cluster documentation: The BM OCP Cluster documentation provides detailed information on how to troubleshoot and resolve issues related to the BM OCP Cluster.
Kubernetes documentation: The Kubernetes documentation provides detailed information on how to troubleshoot and resolve issues related to the Kubernetes cluster.
Container runtime documentation: The container runtime documentation provides detailed information on how to troubleshoot and resolve issues related to the container runtime.

In this article, we have provided a Q&A section to address some of the frequently asked questions related to the issue of Kepler logging "Using GRACE HOPPER to obtain Grace GPU power" even when there is no GPU available on the cluster. We hope that this article has been helpful in providing you with the information you need to troubleshoot and resolve this issue.