Question

What placement group should be used when you need the best performance within EC2? (Cluster, Spread, Partition, HPC)

Answer 1

The best placement group for the best EC2 performance is HPC (High Performance Computing).

Step-by-step explanation:

The placement group that should be used for the best performance within EC2 is the HPC (High Performance Computing) placement group.

In an HPC placement group, EC2 instances are placed within a low-latency, 10 Gbps network that is specific to the group. This ensures the highest performance for tightly-coupled, message-passing applications.

Cluster placement groups can also provide good performance by grouping instances in a single AZ, but they don't have the dedicated network like HPC placement groups.