Introducing “default” instance categories for AWS Batch
HPC Blog
AWS Batch has introduced new instance type categories called `default_x86_64` and `default_arm64` to improve instance selection for compute environments.
- Replaces the previous "optimal" category which did not effectively match customer expectations
- Provides dynamic instance type selection across different CPU architectures
- `default_x86_64` covers x86 CPU instances
- `default_arm64` includes Graviton processor instances like m6g, c6g, r6g, and c7g
- Does not include accelerated instances by design
The new categories aim to help customers run workloads more efficiently and cost-effectively by automatically selecting newer, better-performing instance generations. Existing compute environments using "optimal" will remain valid until early November 2025.
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