SAP-C02 Question #210: Real Exam Question with Answer & Explanation

Question

A company has built a high performance computing (HPC) cluster in AWS for a tightly coupled workload that generates a large number of shared files stored in Amazon EFS. The cluster was performing well when the number of Amazon EC2 instances in the cluster was 100. However, when the company increased the cluster size to 1,000 EC2 instances, overall performance was well below expectations. Which collection of design choices should a solutions architect make to achieve the maximum performance from the HPC cluster? (Choose three.)

Options

• AHigh performance computing (HPC) workload cluster should be in a single AZ.
• BLaunch the EC2 instances and attach elastic network interfaces in multiples of four.
• CElastic Fabric Adapter (EFA) is a network device that you can attach to your Amazon EC2
• DEnsure the cluster is launched across multiple Availability Zones.
• EReplace Amazon EFS with multiple Amazon EBS volumes in a RAID array.
• FAmazon FSx for Lustre - Use it for workloads where speed matters, such as machine learning,

Explanation

instances to accelerate High Performance Computing (HPC) high performance computing (HPC), video processing, and financial modeling. Cluster - packs instances close together inside an Availability Zone. This strategy enables workloads to achieve the low-latency network performance necessary for tightly-coupled node-to- node communication that is typical of HPC applications. https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html

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