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chore(eks): add support for TRN1, TRN1N, TRN2, P5, P5E, P5EN instance types #36032

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chore(eks): add support for TRN1, TRN1N, TRN2, P5, P5E, P5EN instance types #36032

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a087c7a
feat(eks): expand GPU instance type detection for EKS nodegroups
pahud Nov 12, 2025
94f7df2
minor
pahud Nov 12, 2025
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2 changes: 1 addition & 1 deletion packages/aws-cdk-lib/aws-eks/README.md
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Expand Up @@ -282,7 +282,7 @@ cluster.addNodegroupCapacity('custom-node-group', {
});
```

> **NOTE:** If you add instances with the inferentia class (`inf1` or `inf2`) or trainium class (`trn1` or `trn1n`)
> **NOTE:** If you add instances with the inferentia class (`inf1` or `inf2`) or trainium class (`trn1`, `trn1n`, or `trn2`)
> the [neuron plugin](https://awsdocs-neuron.readthedocs-hosted.com/en/latest/containers/dlc-then-eks-devflow.html)
> will be automatically installed in the kubernetes cluster.

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9 changes: 8 additions & 1 deletion packages/aws-cdk-lib/aws-eks/lib/private/nodegroup.ts
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Expand Up @@ -5,8 +5,15 @@ import { InstanceClass, InstanceSize, InstanceType } from '../../../aws-ec2';
*/
export function isGpuInstanceType(instanceType: InstanceType): boolean {
// compare instanceType to known GPU InstanceTypes
// P-series: NVIDIA GPU instances (P2, P3, P4, P5 with H100/H200 GPUs)
// G-series: NVIDIA GPU instances for graphics and ML inference
// INF-series: AWS Inferentia chips for ML inference
// TRN-series: AWS Trainium chips for ML training and inference
// See: https://aws.amazon.com/ec2/instance-types/p5/
// See: https://aws.amazon.com/ec2/instance-types/trn2/
const knownGpuInstanceTypes = [InstanceClass.P2, InstanceClass.P3, InstanceClass.P3DN, InstanceClass.P4DE, InstanceClass.P4D,
InstanceClass.P5, InstanceClass.P5E, InstanceClass.P5EN,
InstanceClass.G3S, InstanceClass.G3, InstanceClass.G4DN, InstanceClass.G4AD, InstanceClass.G5, InstanceClass.G5G, InstanceClass.G6,
InstanceClass.G6E, InstanceClass.INF1, InstanceClass.INF2];
InstanceClass.G6E, InstanceClass.INF1, InstanceClass.INF2, InstanceClass.TRN1, InstanceClass.TRN1N, InstanceClass.TRN2];
return knownGpuInstanceTypes.some((c) => instanceType.sameInstanceClassAs(InstanceType.of(c, InstanceSize.LARGE)));
}
6 changes: 6 additions & 0 deletions packages/aws-cdk-lib/aws-eks/test/nodegroup.test.ts
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Expand Up @@ -1841,6 +1841,12 @@ describe('isGpuInstanceType', () => {
ec2.InstanceType.of(ec2.InstanceClass.G3S, ec2.InstanceSize.XLARGE),
ec2.InstanceType.of(ec2.InstanceClass.G5, ec2.InstanceSize.XLARGE),
ec2.InstanceType.of(ec2.InstanceClass.G5G, ec2.InstanceSize.XLARGE),
ec2.InstanceType.of(ec2.InstanceClass.TRN1, ec2.InstanceSize.XLARGE2),
ec2.InstanceType.of(ec2.InstanceClass.TRN1N, ec2.InstanceSize.XLARGE32),
ec2.InstanceType.of(ec2.InstanceClass.TRN2, ec2.InstanceSize.XLARGE48),
ec2.InstanceType.of(ec2.InstanceClass.P5, ec2.InstanceSize.XLARGE48),
ec2.InstanceType.of(ec2.InstanceClass.P5E, ec2.InstanceSize.XLARGE48),
ec2.InstanceType.of(ec2.InstanceClass.P5EN, ec2.InstanceSize.XLARGE48),
];
gpuInstanceTypes.forEach(instanceType => {
expect(isGpuInstanceType(instanceType)).toBe(true);
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