Q81 — AWS SAA-C03 Ch.12

Question 81 of 100 | ← Chapter 12

Q881. A company plans to run a high performance computing (HPC) workload on Amazon EC2 Instances. The workload requires low-latency network performance and high network throughput with tightly coupled node- to-node communication.Which solution will meet these requirements?

Correct Answer: A. Configure the EC2 instances to be part of a cluster placement group.

Explanation

The solution that will meet the requirements for low-latency network performance and high network throughput with tightly coupled node-to-node communication is option A: Configure the EC2 instances to be part of a cluster placement group.A cluster placement group is a logical grouping of EC2 instances within a single Availability Zone. When instances are launched in a cluster placement group, they benefit from low-latency network performance and high network throughput. The instances in a cluster placement group share the same underlying hardware and network infrastructure, allowing for faster communication between instances.For HPC workloads that require tightly coupled node-to-node communication, such as parallel processing or MPI (Message Passing Interface), using a cluster placement group is recommended. It provides the best performance by reducing network latency and enabling high-bandwidth communication between instances.Option B suggests launching the EC2 instances with Dedicated Instance tenancy. While Dedicated Instances provide dedicated hardware for increased isolation and compliance requirements, they do not specifically address the low-latency and high throughput requirements of the HPC workload.Option C suggests launching the EC2 instances as Spot Instances. Spot Instances are spare EC2 capacity offered at discounted prices. While Spot Instances can be cost-effective, they do not provide guaranteed availability or the ability to configure the instances within a cluster placement group, which is necessary for the desired network performance.Option D suggests configuring an On-Demand Capacity Reservation when launching the EC2 instances. Capacity Reservations allow you to reserve capacity for specific instance types in a specific Availability Zone. While this ensures availability, it does not directly address the low-latency and high throughput requirements of the HPC workload.In summary, to meet the requirements of low-latency network performance and high network throughput with tightly coupled node-to-node communication, the company should configure the EC2 instances to be part of a cluster placement group (Option A).