Exam AWS Certified Solutions Architect - Professional topic 1 question 641 discussion

B and C

BC ---------------- A: HA is not the case B: placement group is good for HPC, refer to https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html C: EFA is good for HPC, refer to https://aws.amazon.com/hpc/efa/ D: burstable is not the case E: we need to Disable hyper-threading, refer to https://www.iucc.ac.il/en/blog/best-practices-for-running-hpc-on-aws/

HPC -> cluster placement group, Elastic Fabric Adapter

B and C

B and C.

B. Deploy Amazon EC2 instances in a placement group. C. Use Amazon EC2 instances that support Elastic Fabric Adapter (EFA).

B and C

I'll go with B,C

B and C is correct

It's B C, placement group and Elastic Fabric Adapter (EFA).

BBB CCC ---

B and C.

I'll go with B,C

b,C for sure

it's B&C

B say "in a placement group". It does not say cluster partition group, which would improve performance. A placement group could also be spread, which would decrease performance.

will go with B &C ..... https://aws.amazon.com/hpc/efa/ Elastic Fabric Adapter (EFA) is a network interface for Amazon EC2 instances that enables customers to run applications requiring high levels of inter-node communications at scale on AWS. Its custom-built operating system (OS) bypass hardware interface enhances the performance of inter-instance communications, which is critical to scaling these applications. With EFA, High Performance Computing (HPC) applications using the Message Passing Interface (MPI) and Machine Learning (ML) applications using NVIDIA Collective Communications Library (NCCL) can scale to thousands of CPUs or GPUs. As a result, you get the application performance of on-premises HPC clusters with the on-demand elasticity and flexibility of th...