Cluster networks use instance pools to manage groups of identical high performance computing (HPC), GPU, or optimized instances that are connected with a high-bandwidth, ultra low-latency network. Each node in the cluster is a bare metal machine located in close physical proximity to the other nodes. A remote direct memory access (RDMA) network between nodes provides latency as low as single-digit microseconds, comparable to on-premises HPC clusters.
Cluster networks are built on top of the instance pools feature. Most operations in the instance pool are managed directly by the cluster network, though you can resize the underlying instance pool, change the instance configuration that the pool uses to create new instances, monitor the pool, and add tags.
Tip
If you want to manage instances in the RDMA network independently of each other or use different types of instances in the network group, then use compute clusters instead.
For steps to manage cluster networks with instance pools, see the following topics:
The availability domain that you create the cluster network in must have hardware that supports cluster networks.
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