Nsys does not display NVLINK counters on GH200 that is described in documentatation

Developer Tools Nsight Systems Profiling Linux Targets
1

Hi,

I am using nsys to profile a GH200 machine.

According to the user manual,, the NVLink performance data should be shown in the nsys report, but I do not see it in the GUI (image below), nor does nsys report any errors that it could not be collected.

Screenshot 2024-08-15 at 4.25.19 PM
Screenshot 2024-08-15 at 4.25.19 PM612×774 68 KB

Platform	Linux
OS	Rocky Linux 9.3 (Blue Onyx)
Hardware platform	armv8
Serial number	Local (CLI)
GPU descriptions	NVIDIA GH200 120GB
NVIDIA driver version	550.54.15
Max EMC frequency	1.60 GHz
CPU context switch	supported
GPU context switch	supported
Tunnel traffic through SSH	no
Timestamp counter	supported
NVIDIA Nsight Systems version 2024.1.1.59-241133802077
2

@pkovalenko

3

What does diagnostics summary say? Are there any messages mentioning GPU Metrics?

4

This is the only message regarding GPU metrics in the diagnostic summary

Information	Analysis		00:05.251	
Number of GPU Metrics events collected: 286,057.
5

Could you share the report? You can either upload it publicly, or send it to me privately to pkovalenko@nvidia.com, or, if you don’t want to share confidential data, collect and share a new report by profiling sleep 1. Note that 2024.1 is a fairly old release, so please try the latest one first.