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Exam AWS Certified Machine Learning - Specialty topic 1 question 75 discussion

Exam question from Amazon's AWS Certified Machine Learning - Specialty
Question #: 75
Topic #: 1
[All AWS Certified Machine Learning - Specialty Questions]

A Machine Learning Specialist wants to determine the appropriate SageMakerVariantInvocationsPerInstance setting for an endpoint automatic scaling configuration. The Specialist has performed a load test on a single instance and determined that peak requests per second (RPS) without service degradation is about 20 RPS. As this is the first deployment, the Specialist intends to set the invocation safety factor to 0.5.
Based on the stated parameters and given that the invocations per instance setting is measured on a per-minute basis, what should the Specialist set as the
SageMakerVariantInvocationsPerInstance setting?

  • A. 10
  • B. 30
  • C. 600
  • D. 2,400
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Suggested Answer: C 🗳️
by ahquiceno at Feb. 3, 2021, 1:23 p.m.
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Paul_NoName
Highly Voted 2 years, 6 months ago
C is correct . SageMakerVariantInvocationsPerInstance = (MAX_RPS * SAFETY_FACTOR) * 60 AWS recommended Saf_fac =0 .5
upvoted 14 times
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ahquiceno
Highly Voted 2 years, 6 months ago
Answer C: SageMakerVariantInvocationsPerInstance = (MAX_RPS * SAFETY_FACTOR) * 60 https://docs.aws.amazon.com/sagemaker/latest/dg/endpoint-scaling-loadtest.html
upvoted 6 times
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Mickey321
Most Recent 8 months, 3 weeks ago
Selected Answer: C
To calculate the SageMakerVariantInvocationsPerInstance setting, we can use the following equation from the web search results1: SageMakerVariantInvocationsPerInstance = (MAX_RPS * SAFETY_FACTOR) * 60 Where MAX_RPS is the maximum RPS that the variant can handle, SAFETY_FACTOR is the safety factor that we choose to ensure that we don’t exceed the maximum RPS, and 60 is to convert from RPS to invocations-per-minute. Plugging in the given values, we get: SageMakerVariantInvocationsPerInstance = (20 * 0.5) * 60 SageMakerVariantInvocationsPerInstance = 10 * 60 SageMakerVariantInvocationsPerInstance = 600 Therefore, the Specialist should set the SageMakerVariantInvocationsPerInstance setting to 600.
upvoted 1 times
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jackzhao
1 year, 2 months ago
SageMakerVariantInvocationsPerInstance = (MAX_RPS * SAFETY_FACTOR) * 60
upvoted 1 times
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King_Chess1
1 year, 3 months ago
SageMakerVariantInvocationsPerInstance = (MAX_RPS * SAFETY_FACTOR) * 60 (20RPS * 0.5Safety Factor) * 60 (10)*60 = 600 Answer C
upvoted 1 times
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Peeking
1 year, 5 months ago
Selected Answer: C
Maximum request at peak time = 20 RPS = 20x60 = 1200RPM Safety factor of 0.5 = 1200*0.5 = 600 Basic setting of parameter = 600 (requests per minutes)
upvoted 1 times
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