SAA-C03 Q339 · Compute

Question

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?

Accepted Answer

**A. Cluster Placement Group** is the correct answer because it directly addresses every requirement:

1. **Low-latency network performance**: A cluster placement group packs EC2 instances close together within a **single Availability Zone**, often on the same underlying rack or adjacent racks. This physical proximity minimizes network hops and reduces latency to the lowest possible levels.

2. **High network throughput**: Instances in a cluster placement group can leverage **enhanced networking** and achieve up to **100 Gbps** of bandwidth between instances (with supported instance types like C5n, M5n, etc.). The close physical proximity ensures maximum bisection bandwidth.

3. **Tightly coupled node-to-node communication**: HPC workloads (e.g., computational fluid dynamics, molecular mod

📖 Explanation

✅ Correct Answer

❌ Wrong Answers

📘 Key Concepts

🏗️ Architecture

⚙️ Operations

💰 Cost

🎯 Exam Tips