A Company Has Built a High Performance Computing (HPC) Cluster

question 454

Multiple Choice

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.)

• A) Ensure the HPC cluster is launched within a single Availability Zone.
• B) Launch the EC2 instances and attach elastic network interfaces in multiples of four.
• C) Select EC2 instance types with an Elastic Fabric Adapter (EFA) enabled.
• D) Ensure the clusters is launched across multiple Availability Zones
• E) Replace Amazon EFS win multiple Amazon EBS volumes in a RAID array.
• F) Replace Amazon EFS with Amazon FSx for Lustre.

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Definitions:

Expected Utility

A theory in economics that calculates the anticipated utility of an action, factoring in all possible outcomes weighted by their probabilities.

Risk Averse

Having the tendency to prefer outcomes with lower uncertainty and potential for loss, even if they may offer lesser but more certain rewards.

Expected Utility

A theory in economics that quantifies how choices are made with uncertainty, aimed at maximizing the satisfaction or benefit.

Risk-neutral

A characteristic of individuals or entities that exhibit indifference between choices with differing levels of risk, focusing solely on expected outcomes.