Getting Started With GPU Scheduling for Training Clusters: A Developer Walkthrough
TL;DR
This guide explains getting started clearly and practically: what it is, why it matters in 2026, and how to apply it step by step. You'll find core concepts, proven best practices, concrete data, trusted references, and a concise FAQ — everything you need in one focused place.
Key takeaways
- Treat data and models as versioned, testable artifacts, not one-off scripts, or reproducibility and rollback will be impossible when something breaks in production.
- Monitor inputs and predictions in production for drift, not just uptime, because a silently degrading model fails the business long before it throws an error.
- For self-hosted LLM serving, reach for vLLM or TGI first; their continuous batching and paged KV-cache management deliver far better GPU utilization than rolling your own loop.
- A model registry (MLflow, Unity Catalog, SageMaker) is the single source of truth for what is deployed, its lineage, and its promotion stage, so wire it into your CI/CD before you scale.
- A feature store solves training-serving skew by computing features once and serving the identical logic to both offline training and online inference paths.
This is a practical, up-to-date guide to Getting Started — what it is, why it matters in 2026, and how to apply it in real projects. It is written for developers and founders who want clear answers and proven best practices, not filler.
Whether you're just starting out or leveling up, treat this as a working reference you can return to. Every section is built to be skimmed, applied, and shared.
Model monitoring and drift detection
Once a model is live, monitoring is what tells you whether it is still doing its job, and it spans operational metrics like latency and error rate as well as ML-specific signals. Data drift describes a change in the distribution of incoming features relative to training data, while concept drift describes a change in the relationship between features and the target, and either can quietly erode accuracy without any code changing. Because ground-truth labels often arrive late or never, teams rely on proxy signals such as prediction distribution shifts, embedding drift, and input validation to catch problems early. Tools like Evidently, Arize, WhyLabs, Fiddler, and NannyML specialize in this, computing statistical distance measures such as population stability index or Kolmogorov-Smirnov and alerting when they cross a threshold.
Evaluating LLM applications
Evaluation for LLM systems replaces the single accuracy score of classic ML with a portfolio of checks, because outputs are free-form text judged on correctness, relevance, safety, and style. Practical eval combines deterministic assertions (does the JSON parse, does it contain the required field) with reference-based metrics and, increasingly, LLM-as-judge scoring where a strong model grades responses against a rubric. Retrieval-augmented systems get their own metrics such as context precision, recall, and faithfulness, popularized by frameworks like RAGAS. The discipline is to maintain a curated, versioned evaluation set, run it in CI on every prompt or model change, and treat regressions as blocking, using tools such as OpenAI Evals, Braintrust, LangSmith, DeepEval, or Promptfoo.
What is MLOps?
MLOps is the set of practices, tooling, and culture for reliably taking machine learning models from experimentation into production and keeping them healthy over time. It borrows heavily from DevOps but adds concerns that traditional software does not have, most notably that the behavior of an ML system depends on data as much as on code. Where a web service is deterministic given its inputs, a model can silently degrade as the world shifts underneath it, so MLOps extends CI/CD with data versioning, model registries, continuous monitoring, and retraining loops. The goal is to make model deployment repeatable, auditable, and boring rather than a heroic one-off effort.
CI/CD for machine learning
CI/CD for ML extends the familiar build-test-deploy pipeline to cover data and models, which introduces stages that software pipelines do not have. Beyond running unit tests on code, an ML pipeline validates incoming data schemas and quality, triggers training when new data or code arrives, evaluates the resulting model against a holdout set and the current production model, and only promotes it if it clears the bar. Continuous training, where retraining is automated on a schedule or triggered by drift alerts, is the ML-specific addition that keeps models fresh. Orchestrators such as Kubeflow Pipelines, Metaflow, Airflow, Dagster, and ZenML define these workflows as code, while DVC and Git-based data versioning make each run reproducible from data to model.
Model serving with vLLM and TGI
Model serving is the runtime layer that turns a trained model into a low-latency, high-throughput API, and for open-weight LLMs the dominant engines are vLLM and Hugging Face Text Generation Inference. vLLM introduced PagedAttention, which manages the attention key-value cache in non-contiguous pages so that GPU memory is used efficiently and many requests can be batched together, while TGI offers a production-hardened server with tensor parallelism, quantization, and streaming. Both rely on continuous (in-flight) batching, where new requests join a running batch instead of waiting for a fixed window, which is the single biggest lever for GPU utilization. Alternatives and complements include NVIDIA Triton with its TensorRT-LLM backend, SGLang, and managed endpoints, but vLLM has become the common default for self-hosting.
How LLMOps differs from classic MLOps
LLMOps is the specialization of MLOps for applications built on large language models, and it shifts the center of gravity from training your own models to orchestrating, prompting, and evaluating foundation models you often did not train. Classic MLOps assumes you own the training pipeline and can retrain to fix drift; with hosted LLMs you instead manage prompts, retrieval pipelines, tool definitions, and provider selection. Evaluation becomes harder because outputs are open-ended and non-deterministic, pushing teams toward LLM-as-judge scoring and human review rather than a single accuracy number. New operational primitives appear too, such as token-cost budgeting, prompt versioning, semantic caching, and guardrails against prompt injection and unsafe output.
Getting Started: Key Facts and Data
According to recent industry research and the official documentation linked below:
- As of 2025, NVIDIA GPUs (via CUDA) remain the dominant hardware for training and inference, though AMD (ROCm), Google TPUs, AWS Trainium/Inferentia, and other accelerators have grown as alternatives.
- The rise of large language models drove the coining of the term LLMOps around 2022-2023, reflecting new operational concerns like prompt versioning, token-cost management, and non-deterministic output evaluation.
- MLOps emerged as a discipline around 2018-2019, adapting DevOps practices to the distinct challenges of data and model lifecycle management, and by 2025 it is a standard function on most mature ML teams.
Quick-Reference Summary
A map of what this guide covers:
| Topic | What you'll learn |
|---|---|
| Model monitoring and drift detection | Once a model is live, monitoring is what tells you whether it is still doing its job, and it spans operational metrics |
| Evaluating LLM applications | Evaluation for LLM systems replaces the single accuracy score of classic ML with a portfolio of checks |
| What is MLOps? | MLOps is the set of practices, tooling, and culture for reliably taking machine learning models from experimentation |
| CI/CD for machine learning | CI/CD for ML extends the familiar build-test-deploy pipeline to cover data and models |
| Model serving with vLLM and TGI | Model serving is the runtime layer that turns a trained model into a low-latency |
| How LLMOps differs from classic MLOps | LLMOps is the specialization of MLOps for applications built on large language models |
How to Get Started with Getting Started
A simple path that works:
- Learn the fundamentals of Getting Started from primary sources, not just tutorials.
- Build one small, real project end to end.
- Get feedback, refactor, and add tests.
- Ship it publicly and document what you learned.
- Repeat with a slightly harder project each time.
Build It with a World-Class Full Stack Developer
Sandeep Kumar Chaudhary is a full stack world-class developer. If you want to turn this into a real, production-ready product, get in touch — message directly on WhatsApp at +9779802348957 for a fast, no-pressure consult.
You can also explore the projects already shipped to thousands of users, or start a conversation here.
Final Thoughts
Treat data and models as versioned, testable artifacts, not one-off scripts, or reproducibility and rollback will be impossible when something breaks in production. The developers and teams who win in 2026 pair strong fundamentals with consistent shipping. Start small, stay curious, build in public, and revisit this guide as your skills grow.
Sources and Further Reading
Frequently Asked Questions
What is getting started?
Evaluation for LLM systems replaces the single accuracy score of classic ML with a portfolio of checks, because outputs are free-form text judged on correctness, relevance, safety, and style. Practical eval combines deterministic assertions (does the JSON parse, does it contain the required field) with reference-based metrics and, increasingly, LLM-as-judge scoring where a strong model grades responses against a rubric. This guide covers getting started end to end — core concepts, best practices, concrete data, and a step-by-step approach you can apply right away.
How do teams schedule GPUs efficiently on Kubernetes?
They install the NVIDIA device plugin and GPU Operator to expose GPUs to the cluster, then add a batch-aware scheduler such as Kueue, Volcano, or Run:ai for gang scheduling, quotas, and fair sharing that the default scheduler lacks. Techniques like Multi-Instance GPU partitioning, time-slicing, and topology-aware placement squeeze more work out of each card. The overarching goal is high utilization, keeping expensive accelerators busy instead of sitting idle.
Do I need a feature store?
You need one when the same features must be served both for offline training and for low-latency online inference, and keeping those two paths consistent is causing training-serving skew. For a single model with batch predictions, a feature store is often overkill and a well-organized data pipeline suffices. Adopt one (Feast, Tecton, or a platform-native store) once you have multiple models sharing features or real-time serving requirements.
What is the difference between MLOps and DevOps?
DevOps automates building, testing, and deploying software whose behavior is fully determined by its code. MLOps adds the data and model dimension: it versions datasets, tracks experiments, manages a model registry, and monitors for drift, because an ML system's behavior depends on data that changes over time. In short, MLOps is DevOps plus continuous training and continuous monitoring of models.
vLLM or TGI for serving open-source LLMs?
Both are strong, production-grade inference engines built around continuous batching. vLLM is known for its PagedAttention memory management and broad model and quantization support and has become the common open-source default, while Hugging Face TGI integrates tightly with the Hugging Face ecosystem and is battle-tested in their inference stack. Benchmark both on your specific model, hardware, and traffic pattern, since results vary; NVIDIA Triton with TensorRT-LLM is worth testing when you need maximum optimization on NVIDIA hardware.
Sandeep Kumar Chaudhary
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