A company runs a high-performance computing (HPC) workload on a cluster of Amazon EC2 instances. The instances need to communicate with each other with the absolute lowest possible latency and highest packet rate. The workload is tightly coupled and runs in a single Availability Zone. Which network configuration should the Architect use?

Answer options:

Deploy the instances in a Cluster Placement Group and attach Elastic Fabric Adapters (EFA) to the instances.

Deploy the instances in a Spread Placement Group and attach Elastic Network Adapters (ENA) to the instances.

Deploy the instances across multiple Availability Zones and use AWS Global Accelerator for routing.

Deploy the instances in a Cluster Placement Group and use VPC peering to route traffic between them.

How to approach this question

Combine the placement strategy for low latency (Cluster) with the network adapter designed for HPC (EFA).

Full Answer

A.Deploy the instances in a Cluster Placement Group and attach Elastic Fabric Adapters (EFA) to the instances.✓ Correct

Deploy the instances in a Cluster Placement Group and attach Elastic Fabric Adapters (EFA) to the instances.

For tightly coupled HPC workloads, you should use a Cluster Placement Group to ensure instances are physically located close to each other in the data center, minimizing network latency. Additionally, using an Elastic Fabric Adapter (EFA) provides OS-bypass capabilities, significantly reducing latency and increasing throughput compared to standard network interfaces.

Common mistakes

Confusing ENA (standard high performance) with EFA (HPC specific OS-bypass).

Question 24 All questions Question 26

Practice the full AWS Solutions Architect Professional SAP-C02 Practice Exam 5

75 questions · hints · full answers · grading

More questions from this exam

Q01A global enterprise is redesigning its AWS network architecture across 50 AWS accounts and 3 AWS ...Hard Q02A company uses AWS Organizations to manage multiple accounts. The security team mandates that no ...Medium Q03A financial institution requires a disaster recovery strategy for its critical trading applicatio...Hard Q04An enterprise is setting up a new multi-account AWS environment using AWS Control Tower. They nee...Medium Q05A company has a complex AWS environment with hundreds of linked accounts under AWS Organizations....Hard

View all 75 questions →