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Difficulty: EasyHigh-Performing and Elastic Compute Solutions

An engineering company plans to run a tightly-coupled computational fluid dynamics (CFD) simulation. The software requires multiple Amazon EC2 instances to communicate with each other with the lowest possible network latency and high throughput.

Which EC2 placement strategy should be selected to meet this performance requirement?

  1. Configure the instances in a cluster placement group within a single Availability Zone.Answer
  2. B
    Configure the instances in a spread placement group across multiple Availability Zones.
  3. C
    Configure the instances in a partition placement group across different racks.
  4. D
    Migrate the simulation workload to AWS Lambda functions.

Answer

Configure the instances in a cluster placement group within a single Availability Zone.
The correct option is configuring the instances in a cluster placement group within a single Availability Zone. A cluster placement group is specifically designed for applications that require low network latency, high network throughput, or both. It achieves this by launching instances close together on the same physical hardware within a single Availability Zone.

Step-by-Step Solution

1
Identify the primary workload requirement.
The simulation is a tightly-coupled computational fluid dynamics workload requiring the lowest possible network latency and high network throughput for inter-node communication.
Understanding the core performance requirements allows for the selection of the correct EC2 placement strategy.
2
Evaluate the placement group strategies.
Cluster placement groups place instances physically close together on hardware in a single Availability Zone to maximize network performance, which matches the latency requirements. Spread and partition groups prioritize fault tolerance over low-latency network speeds.
Comparing different placement groups ensures the selected infrastructure configuration aligns with the application design constraints.

Key Concept

Selecting the correct EC2 placement group for low-latency, high-performance networking.
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Topics

High-Performing and Elastic Compute Solutions

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