DEV

Your model is trained and accurate — but is it fast enough for production? This episode unpacks how pairing ONNX with NVIDIA's TensorRT can dramatically cut inference latency and squeeze more performance out of hardware you already own.

Show Notes

Getting a deep learning model to perform well in training is one challenge — getting it to run efficiently in production is a different beast entirely. This episode of Development tackles that gap head-on, exploring the powerful combination of ONNX and TensorRT as a practical path to faster, leaner inference. The discussion is grounded in this in-depth guide to runtime optimization of ONNX models with TensorRT, and covers everything from the fundamentals to the real-world trade-offs engineers face on the way to production.
Here's what the episode covers:
  • What ONNX actually solves — how this open, framework-agnostic format bridges the gap between training environments like PyTorch and production deployment stacks, so teams aren't locked into a single ecosystem.
  • Why TensorRT exists — unlike general-purpose frameworks built for both training and inference, TensorRT is purpose-built to squeeze maximum speed from NVIDIA GPUs at inference time, through layer fusion, redundant operation elimination, and precision calibration.
  • The end-to-end workflow — exporting a model to ONNX, inspecting the graph for correctness, building an optimized TensorRT engine (via trtexec or the Python API), and deploying it into a production runtime.
  • Precision modes and the accuracy trade-off — how dropping from FP32 to FP16 or INT8 can dramatically reduce memory usage and boost throughput, and when that trade-off is acceptable versus when it demands careful measurement.
  • Common pitfalls to avoid — custom operator support gaps, input shape mismatches, batch size tuning, and the importance of keeping TensorRT, CUDA, and cuDNN versions in sync.
  • When TensorRT isn't the right answer — a frank look at hardware constraints and when alternatives like OpenVINO may be the better fit for non-NVIDIA deployment targets.
Whether you're working on computer vision pipelines, real-time NLP inference, or any application where latency directly affects user experience, this episode lays out a clear, pragmatic approach to unlocking performance from infrastructure you already have. For more on scaling deep learning across hardware, check out the Development episode on Multi-GPU Training With Model Parallelism in DeepSpeed.
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What is DEV?

Software and AI development podcast. We cover all things software development, including today's advanced AI development tricks and techniques.