This document is relevant for: Inf1, Inf2, Trn1, Trn1n

Neuron System Tools#

Neuron Tools []#

Date: 05/01/2023

New in the release:

  • Added new Neuron Collectives benchmarking tool, nccom-test, to enable benchmarking sweeps on various Neuron Collective Communication operations. See new nccom-test documentation under System Tools for more details.

  • Expanded support for Neuron profiling to include runtime setup/teardown times and collapsed execution of NeuronCore engines and DMA. See Tensorboard release notes and tutorial for more details.

Neuron Tools []#

Date: 03/28/2023

New in the release:

  • Updated neuron-top to show effective FLOPs across all NeuronCores.

Neuron Tools []#

Date: 02/24/2023

New in the release:

  • Updated neuron-top to show aggregated utilization/FLOPs across all NeuronCores.

Neuron Tools []#

Date: 02/08/2023

New in the release:

  • Added support for model FLOPS metrics in both neuron-monitor and neuron-top. More details can be found in the Neuron Tools documentation.

Neuron Tools []#

Date: 12/09/2022

This release adds support for profiling with the Neuron Plugin for TensorBoard on TRN1. Please check out the documentation Neuron Plugin for TensorBoard (Trn1).

New in the release:

  • Updated profile post-processing for workloads executed on TRN1

Neuron Tools []#

Date: 11/07/2022

New in the release:

  • Minor bug fixes and improvements.

Neuron Tools []#

Date: 10/26/2022

New in the release:

  • New neuron-monitor and neuron-top feature: memory utilization breakdown. This new feature provides more details on how memory is being currently used on the Neuron Devices as well as on the host instance.

  • neuron-top’s UI layout has been updated to accommodate the new memory utilization breakdown feature.

  • neuron-monitor’s inference_stats metric group was renamed to execution_stats. While the previous release still supported inference_stats, starting this release the name inference_stats is considered deprecated and can’t be used anymore.


For more details on the new memory utilization breakdown feature in neuron-monitor and neuron-top check out the full user guides: Neuron Monitor User Guide and Neuron Top User Guide.

Bug Fixes:

  • Fix a rare crash in neuron-top when the instance is under heavy CPU load.

  • Fix process names on the bottom tab bar of neuron-top sometimes disappearing for smaller terminal window sizes.

Neuron Tools []#

Date: 10/10/2022

This release adds support for both EC2 INF1 and TRN1 platforms. Name of the package changed from aws-neuron-tools to aws-neuronx-tools. Please remove the old package before installing the new one.

New in the release:

  • Added support for ECC counters on Trn1

  • Added version number output to neuron-top

  • Expanded support for longer process tags in neuron-monitor.

  • Removed hardware counters from the default neuron-monitor config to avoid sending repeated errors - will add back in future release.

  • neuron-ls - Added option neuron-ls --topology with ASCII graphics output showing the connectivity between Neuron Devices on an instance. This feature aims to help in understanding pathways between Neuron Devices and in exploiting code or data locality.

Bug Fixes:

  • Fix neuron-monitor and neuron-top to show the correct Neuron Device when running in a container where not all devices are present.

Neuron Tools []#

Date: 04/29/2022

  • Minor updates

Neuron Tools [2.0.790.0]#

Date: 03/25/2022

  • neuron-monitor: fixed a floating point error when calculating CPU utilization.

Neuron Tools [2.0.623.0]#

Date: 01/20/2022

New in the release:

  • neuron-top - Added “all” tab that aggregates all aggregate all running Neuron processes into a single view.

  • neuron-top - Improved startup time to approximately 1.5 seconds in most cases.

  • neuron-ls - Removed header message about updating tools from neuron-ls output

Bug fixes:

  • neuron-top - Reduced single CPU core usage down to 0.7% from 80% on inf1.xlarge when running neuron-top by switching to an event-driven approach for screen updates.

Neuron Tools [2.0.494.0]#

Date: 12/27/2021

  • Security related updates related to log4j vulnerabilities.

Neuron Tools [2.0.327.0]#

Date: 11/05/2021

  • Updated Neuron Runtime (which is integrated within this package) to libnrt to fix a container issue that was preventing the use of containers when /dev/neuron0 was not present. See details here neuron-runtime-release-notes.

Neuron Tools []#

Date: 10/27/2021

New in this release:

  • Tools now support applications built with Neuron Runtime 2.x (


  • Updates have been made to neuron-ls and neuron-top to significantly improve the interface and utility of information provided.

  • Expands neuron-monitor to include additional information when used to monitor latest Frameworks released with Neuron 1.16.0.

    neuron_hardware_info Contains basic information about the Neuron hardware.

    "neuron_hardware_info": {
       "neuron_device_count": 16,
       "neuroncore_per_device_count": 4,
       "error": ""
    • neuron_device_count : number of available Neuron Devices

    • neuroncore_per_device_count : number of NeuronCores present on each Neuron Device

    • error : will contain an error string if any occurred when getting this information (usually due to the Neuron Driver not being installed or not running).

  • neuron-cli entering maintenance mode as it’s use is no longer relevant when using ML Frameworks with an integrated Neuron Runtime ( see 10/27/2021 - Neuron support for Apache MXNet 1.5 enters maintenance mode for more information.

  • For more information visit Neuron Tools

This document is relevant for: Inf1, Inf2, Trn1, Trn1n