Overview – JetPack 4.1.1 Developer Preview

NVIDIA JetPack SDK is the most comprehensive solution for building AI applications. Use the JetPack installer to flash your Jetson Developer Kit with the latest OS image, install developer tools for both host PC and Developer Kit, and install the libraries and APIs, samples, and documentation needed to jumpstart your development environment.

New Key Features

The new JetPack 4.1.1 Developer Preview gives you the performance you need to develop your best robotics and autonomous machine applications. New features include:


TensorRT is a high performance deep learning inference runtime for image classification, segmentation, and object detection neural networks. It speeds up deep learning inference as well as reducing the runtime memory footprint for convolutional and deconv neural networks.

JetPack 4.1.1 Developer Preview Highlights:

  • DLA support for FP16 — AlexNet, GoogleNet, ResNet-50, and LeNet for MNIST networks have been validated
  • Support for both HMMA (FP16) and IMMA (INT8) on iGPU
  • Fine grain control for scheduling layers to execute on either iGPU or DLA
  • New Caffe SSD and INT8 API samples


CUDA Deep Neural Network library provides high-performance primitives for deep learning frameworks. It includes support for convolutions, activation functions and tensor transformations.

JetPack 4.1.1 Developer Preview Highlights:

  • Supports IMMA Programmability
  • Grouped convolution performance improvements for NHWC input/output and FP16 and FP32 compute
  • Strided convolution now supported by FFT tiling algorithms
  • Performance improvements for dilated convolutions and convolutions computed with Winograd transform


CUDA Toolkit provides a comprehensive development environment for C and C++ developers building GPU-accelerated applications. The toolkit includes a compiler for NVIDIA GPUs, math libraries, and tools for debugging and optimizing the performance of your applications.

JetPack 4.1.1 Developer Preview highlights:

  • Supports IMMA Programmability – direct use of these instructions dramatically reduces kernel execution time and kernel launch latency
  • Support for CUDA-Vulkan interoperability

Developer Tools

UDA Toolkit provides a comprehensive development environment for C and C++ developers building high-performance GPU-accelerated applications with CUDA libraries. The toolkit includes Nsight Eclipse Edition IDE, debugging and profiling tools, and a toolchain for cross-compiling applications.

NVIDIA System Profiler is a multi-core CPU PC sampling profiler that provides an interactive view of captured profiling data, helping improve overall application performance.

NVIDIA Nsight Graphics: A console-grade tool that allows developers to debug and profile OpenGL, OpenGL ES, and Vulkan, enabling developers to get the most out of the Jetson Platform.

JetPack 4.1.1 Developer Preview Highlights:

  • CUDA Tools
    • Nsight Eclipse plugins edition
      • True plugins can be installed in the developer’s own Eclipse environment
      • Offers an all-in-one integrated environment to edit, build, and debug CUDA applications
  • NVIDIA Nsight Systems
    • Profiling on Jetson AGX Xavier
    • Ability to trace cuDNN, cuBLAS, and OS runtime library API calls
  • NVIDIA Nsight Graphics
    • Users can utilize the powerful Activities system to target their workflow for debugging and profiling
    • The Resources view allows you to edit the default shader used to display textures, and change the data display or highlight useful characteristics of the data
    • Improved editor capabilities including goto line and find/replace capabilities

L4T 31.1

  • L4T r31 for Jetson AGX Xavier
  • IMX185 sensor now supported

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