TPU Subslicing (also known as Dynamic Subslicing) is now generally available for Ironwood (TPU7x).

TPU Subslicing (also known as Dynamic Subslicing) is now generally available for Ironwood (TPU7x). This feature enables you to incrementally provision node pools for a cube or litepod, breaking them into smaller slices (subslices) to run workloads requiring smaller topologies. Updates in this GA release include:

• Dynamic sub-slicing (topologies smaller than 4x4x4, such as 2x2x1, 2x2x2, 2x2x4, and 2x4x4): Supported in GKE version 1.36.0-gke.3712000 or later. • Dynamic super-slicing (topologies 4x4x4 or larger): Supported in GKE version 1.35.2-gke.1842000 or later. • Partition Health Labels: The partition state label is updated to cloud.google.com/gke-tpu-partition-[shape]-state to specify smaller subslice shapes. It also introduces UNSET and INCOMPLETE states. Support for the DEGRADED state only applies to the top-level 4x4x4 topology, and not for smaller sub-slicing topologies.

For more information, see About GKE dynamic slicing.