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MLA-C01 Practice Question: A team uses SageMaker Neo to compile a model for…
A team uses SageMaker Neo to compile a model for deployment on a target device. After compilation, they deploy the compiled model to a SageMaker endpoint using the Neo-optimized container. The endpoint fails to start with error "RuntimeError: Unable to load model". What could be the issue?
⚠ Common exam trap
AWS often tests the misconception that Neo compilation is a generic optimization that works on any endpoint instance, when in fact the target architecture must exactly match the deployment instance's hardware.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The target device architecture during compilation does not match the endpoint instance architecture.
SageMaker Neo compiles a model for a specific target architecture (e.g., ARM, x86, GPU). When deploying the compiled model to a SageMaker endpoint, the endpoint instance type must have a CPU or accelerator architecture that matches the target device specified during compilation. If they do not match, the Neo-optimized runtime cannot load the compiled binary, resulting in a 'RuntimeError: Unable to load model'.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The compiled model was not uploaded to the correct S3 path.
Why it's wrong here
Incorrect path would cause a file not found error.
- ✗
The Neo compilation job failed silently.
Why it's wrong here
A failed compilation would produce an error during compilation, not at deployment.
- ✗
The endpoint instance type does not support Neo.
Why it's wrong here
Neo supports many instance types; unsupported types would cause a different error.
- ✓
The target device architecture during compilation does not match the endpoint instance architecture.
Why this is correct
Neo models are compiled for specific architectures; mismatch causes load failure.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This MLA-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the MLA-C01 exam.