Exam AZ-301 topic 6 question 5 discussion

Azure batch is required, which includes MPI; However, the solution is asking and includes "Minimize costs", which makes utilizing "low-priority VM's" the answer to the specific question: https://docs.microsoft.com/en-us/azure/batch/batch-low-pri-vms

Correct Answer: B. Batch works well with intrinsically parallel (also known as "embarrassingly parallel") workloads. Intrinsically parallel workloads are those where the applications can run independently, and each instance completes part of the work. When the applications are executing, they might access some common data, but they do not communicate with other instances of the application. Intrinsically parallel workloads can therefore run at a large scale, determined by the amount of compute resources available to run applications simultaneously. As per the link similar scenario-Manage the cost and size of the pool by using low-priority VMs or automatically scaling the number of nodes as the workload changes. https://docs.microsoft.com/en-us/azure/batch/batch-technical-overview

B. low-priority virtual machines

The poorly framed question, HPC solution modeling financial risk, and the solution are low priority VMs. Not a real-time scenario. I would like to give Microsoft feedback rather than answering the question's answer during/after test.

B is correct answer.

"What should you include in the solution?" Low priority nodes need to be included to minimise cost.

B is correct. Intrinsically parallel workloads means its not tightly coupled app. To minimize cost we wud use low cost vm to process the parallel independant worklods..

https://docs.microsoft.com/en-us/azure/batch/batch-low-pri-vms https://docs.microsoft.com/en-us/azure/batch/batch-technical-overview B

The answer is D. Because, there VMs process loosely coupled data.

Low Priority VM's

Looks like D is the answer as MPI helps HPC loads... https://docs.microsoft.com/en-us/azure/virtual-machines/workloads/hpc/setup-mpi

I wouldn't risk to run financial batch in a low priority VMs. I prefer using HPC VMs supporting MPI.

B is the correct answer

answer is correct

The reference below states this: You can also use Batch to run tightly coupled workloads; these are workloads where the applications you run need to communicate with each other, as opposed to run independently. Tightly coupled applications normally use the Message Passing Interface (MPI) API. You can run your tightly coupled workloads with Batch using Microsoft MPI or Intel MPI. Improve application performance with specialized HPC and GPU-optimized VM sizes. Why would this be B instead of D