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Exam AWS Certified Solutions Architect - Professional topic 1 question 599 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional
Question #: 599
Topic #: 1
[All AWS Certified Solutions Architect - Professional Questions]

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.
Show Suggested Answer Hide Answer
Suggested Answer: ACF 🗳️
by Nemer at Aug. 12, 2020, 3:32 p.m.
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easytoo
Highly Voted 3 years, 7 months ago
A. High performance computing (HPC) workload cluster should be in a single AZ. C. Elastic Fabric Adapter (EFA) is a network device that you can attach to your Amazon EC2 instances to accelerate High Performance Computing (HPC) F. Amazon FSx for Lustre - Use it for workloads where speed matters, such as machine learning, 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
upvoted 42 times
blackgamer
3 years, 6 months ago
Yes, definitely ACF. Well explained.
upvoted 2 times
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Ebi
Highly Voted 3 years, 6 months ago
I will go with ACF
upvoted 6 times
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SkyZeroZx
Most Recent 1 year, 10 months ago
Selected Answer: ACF
I will go with ACF
upvoted 1 times
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maxh8086
2 years, 4 months ago
https://aws.amazon.com/hpc/faqs/ - There is no built-in limit to the size of the cluster you can build with AWS ParallelCluster. - AWS ParallelCluster also integrates with Elastic Fabric Adapter (EFA) for applications that require low-latency networking between nodes of HPC clusters. AWS ParallelCluster is also integrated with Amazon FSx for Lustre, a high-performance file system with scalable storage for compute workloads, and Amazon Elastic File System. - AWS ParallelCluster is also compatible with Amazon Elastic File System (EFS), RAID, and Amazon FSx for Lustre file systems.
upvoted 1 times
maxh8086
2 years, 4 months ago
https://aws.amazon.com/blogs/hpc/highly-available-hpc-infrastructure-on-aws/ - The two clusters are created using AWS ParallelCluster and, the main front end used to access the environment, is managed by EnginFrame in the Enterprise configuration. Amazon Aurora is used by EnginFrame as RDBMS to manage Triggers, Job-Cache, and Applications and Views users’ groups. Amazon Elastic File System is used as shared file system between the two clusters environments. Two Amazon FSx file systems, one per each Availability Zone (AZ), are used as high-performance file system for the HPC jobs.
upvoted 1 times
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evargasbrz
2 years, 4 months ago
Selected Answer: ACF
I'll go with ACF
upvoted 1 times
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gnic
2 years, 8 months ago
Selected Answer: ACF
ACF A - for network perfomance (single AZ is better than multiple AZ because the latency) C- EFA no brain for HPC F - EFS Lustre is for HPC, no brain too
upvoted 1 times
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ka1tw
3 years, 1 month ago
Why NOT B with multiple ENI?
upvoted 1 times
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Ni_yot
3 years, 3 months ago
Yes ACF.
upvoted 1 times
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cldy
3 years, 4 months ago
A.C.F. EFA + FSx Lustre + single AZ.
upvoted 1 times
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Tan0k
3 years, 4 months ago
Selected Answer: ACF
ACF got to be
upvoted 1 times
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AzureDP900
3 years, 5 months ago
ACF is correct
upvoted 1 times
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acloudguru
3 years, 5 months ago
Selected Answer: ACF
ACF is good.
upvoted 1 times
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WhyIronMan
3 years, 6 months ago
I'll go with A,C,F
upvoted 2 times
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Waiweng
3 years, 6 months ago
it's A,C,F
upvoted 3 times
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Kian1
3 years, 6 months ago
going with ACF
upvoted 3 times
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T14102020
3 years, 6 months ago
Correct ACF. Elastic Fabric Adapter + FSx Lustre for HPC + single AZ
upvoted 4 times
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jackdryan
3 years, 6 months ago
I'll go with A,C,F
upvoted 5 times
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