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• Alright guys, I found this. Pretty sure it settles things. https://naterar.medium.com/a-deep-dive-into-aws-instance-types-solving-high-cpu-workload-and-memory-spikes-57e8b5623777

  Spot: Spot instances can be valuable for handling sporadic high CPU workloads and memory spikes. >>>However, the inherent uncertainty of availability makes them less reliable for consistent, high-demand workloads.<<<

  On-Demand: provide the necessary computational horsepower exactly when needed, making them ideal for dealing with unexpected CPU and memory demands.

  So, yeah, I'd say 'A'.

  👍 19

  uugla_john2023/10/23
• 正解だと思う選択肢: B

  A. On-Demand Instances: On-Demand Instances provide the highest level of flexibility and do not require any upfront commitment. On-Demand Instances are suitable for workloads with variable usage patterns, but they are generally more expensive than other purchasing options.

  B. Spot Instances: Spot Instances are the most cost-effective option for scenarios where the workload is flexible and can be interrupted. Spot Instances allow you to use spare EC2 capacity at a significantly lower cost than On-Demand Instances. Spot Instances are suitable for workloads like batch processing, data analysis, and machine learning jobs that do not require continuous, uninterrupted operation

  C. Reserved Instances: Reserved Instances involve a commitment to a specific instance type in a particular region for a term of 1 or 3 years. In exchange for this commitment, users receive a significant discount compared to On-Demand Instances.

  D. Dedicated Instances: Dedicated Instances are instances that run on hardware dedicated to a single customer. They are typically used in scenarios where compliance or regulatory requirements mandate dedicated hardware.

  👍 13

  TheFivePips2024/01/24

• Correct answer should be B.

  On-Demand Instances: These instances allow you to pay for compute capacity by the hour or second, with no long-term commitments. They are suitable for short-term, spiky, or unpredictable workloads that cannot be interrupted. However, they are not the lowest cost option for long-term, predictable workloads. Spot Instances: This is the correct choice. Spot Instances allow you to bid on spare Amazon EC2 computing capacity. Spot Instances are available at up to a 90% discount compared to On-Demand prices. They are ideal for workloads that are not time-sensitive and can tolerate interruptions. Since the company's ML processing jobs do not need to run at specific times, Spot Instances offer a cost-effective solution for long-term, predictable workloads.

  👍 5

  pure_edge2024/03/02