aws-eks: Support AL2_ARM_64_GPU NodeGroupAmiType

[josephjnatale]

Describe the feature

Using the aws-eks library it would be great if I was able to create a nodeGroup with a Graviton GPU instance like the g5g class. However, the NodegroupAmiType does not support AL2_ARM_64_GPU only AL2_ARM_64 which gets denied when trying to synth cdk. If I don't specify the amiType it defaults to AL2_x86_64_GPU and errors out that the g5g.xlarge is not a valid instance type for the requested amiType.

Use Case

To create a nodeGroup with a g5g instance type

Proposed Solution

add support for AL2_ARM_64_GPU to the NodegroupAmiType enum.

Other Information

No response

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

CDK version used

2.87.0

Environment details (OS name and version, etc.)

Mac os 12.4

[pahud]

According to the doc

All Amazon EKS AMIs don't currently support the g5g and mac families.

I guess it's not supported yet. But I am interested to know your use case. Why you'd like to use g5g to run Amazon EKS nodegroup? What kind of the workload are you running in k8s?

[josephjnatale]

I am running an image Inferencing model in EKS and I'm looking to have the most cost effective instance type with a GPU. The g5g is about 20% cheaper than the g4dn which I'm currently using. I tried using the inferentia instance class but unfortunately only inf1 is available in us-west-2 currently, and I was not able to get the same performance per dollar with our workload.

[chulkilee]

Probably this is blocked by awslabs/amazon-eks-ami#853 ?

See also https://docs.aws.amazon.com/eks/latest/APIReference/API_Nodegroup.html