Unable to change workbench notebook from C3

[JacobusJacobs]

Hi All.

I frequently make use of workbench notebooks, and I have to swap between hardware configurations frequently based on the computing needs. I have found, however, that when I switch to some configurations I cannot switch back. The specific example I have now, is that I switched to a C3 machine, and now I am unable to switch to any other machine, I cannot even change it to another C3 machine. 

 Does anyone have an idea why this would be and how to fix it?

[ibaui]

Hi @JacobusJacobs,

Welcome to Google Cloud Community!

It seems you are encountering a compatibility issue between the notebook's current state and the desired hardware configuration.

The error message "Operation on notebook failed: [pd-standard] features and [instance_type: VIRTUAL_MACHINE family: COMPUTE_OPTIMIZED generation: GEN_3 cpu_vendor: INTEL architecture: X86_64] InstanceTaxonomies are not compatible for creating instance" indicates that the notebook's current configuration (likely related to persistent disk type or other settings) is incompatible with the hardware configuration you're trying to switch to. The notebook is refusing to start because it cannot mount the disk properly. Here are some potential reasons and suggestions you might consider to address the issue: 

Persistent Disk Type: The "pd-standard" feature likely refers to a persistent disk type. C3 machines might have different disk types (e.g., "pd-balanced") that are not compatible with the "pd-standard" disk. C3 machines might have specific storage limitations.

• Current Configuration: Identify the persistent disk type used by your notebook in its current C3 configuration.
• Target Configuration: Check the persistent disk types supported by the target hardware configuration you want to switch to.
• Compatibility: Ensure that the disk types are compatible. If not, you might need to create a new notebook with the desired disk type.

Resource Exhaustion: The C3 machine you're trying to use might be running out of available resources (e.g., RAM, disk space) to accommodate the requested features. Temporarily reduce the amount of RAM or disk space you're requesting.

Notebook State: The notebook might have saved state or dependencies that are specific to the C3 machine. These could include: Libraries installed on the C3 machine might not be available on other configurations and data files stored on the C3 machine's persistent disk might not be accessible on other configurations.

• Restart Notebook: Try restarting the notebook to clear any temporary state or dependencies.
• Remove Dependencies: Remove any libraries or data files that are specific to the C3 machine.
• Create New Notebook: Consider creating a new notebook with the desired hardware configuration and transferring any necessary data or code. This will ensure that the notebook is initialized with the correct disk type and resource limits.

You can also read the following document for more details:

• Vertex AI Workbench notebook tutorials

• Troubleshooting Vertex AI Workbench
  

I hope the above information is helpful.