Updates in 2026.1 — NsightCompute 13.3 documentation

# Updates in 2026.1

General

- Added support for CUDA 13.2.

- The minimum supported version of macOS is now 13.0.

- The Python Report Interface can now be installed as a standalone package from PyPI using `pip install ncu-report`.

NVIDIA Nsight Compute

- Nsight Compute now supports profiling Linux (aarch64 sbsa) targets from macOS hosts.

- The Start Activity Dialog now support editing multi-line command line arguments.

- Added the Report Merge Tool. It enables you to combine multiple reports into one. It is particularly useful for multi-GPU systems and scenarios when comparing and analyzing several reports individually becomes impractical.

- Added the Clustering Window. It helps you analyze and compare multiple profiling reports by grouping similar reports together. This makes it easier to identify performance patterns and find relationships between different profiling sessions.

- Added Register Dependencies analysis to the Source page. It helps you to identify general purpose register dependencies and occupancy issues due to live register pressure. Added Attributed Live Registers and Output Registers metric columns in the Source page views. Renamed Instructions & Scoreboards to Instructions & Dependencies.

- The Source page now shows the metric pipelines associated with each instruction.

- Added a CUDA Graph Viewer tool window that dynamically visualizes CUDA Graphs during interactive profiling.

- Timelines on the Details page now overlay related metrics in a single row when possible. They now also show a max bar in the background to indicate the maximum value at any zoom level. Rows can be switched between theoretical peak and collected maximum value for the Y-axis scale.

- The Instruction Statistics section now has thread-level charts.

- Improved alignment of rule elements on the Details page.

- Moved the section body dropdowns to the left of the Details page section headers.

- Renamed “Kernel Analysis” to “SASS Analysis” in Options dialog.

- The Save As dialog now supports the `.ncu-repz` file extension for compressed reports.

NVIDIA Nsight Compute CLI

- Mandatory concurrent kernels (e.g. NCCL communication kernels) can now be profiled across processes from the same process tree using the `--communicator shmem` option.

- The tool now generates a persisted log file in case of non-recoverable errors.

- The default value of `--clock-control` is now `boost`.

Resolved Issues

- Fixed issues with OptiX command lists in interactive profiling mode.

- Added `occupancy` as an option to `--query-metrics-collection`.

- Fixed issues with the Active Clusters graph in the occupancy calculator.

- Fixed that the inline functions table could show incorrect metrics values in some cases.

- Fixed issues with syntax highlighting on the Souce page.

- Improved the performance of the Source Comparison view for large SASS diffs.

- Fixed issues with alignment of multi-pass PM sampling timelines without context switch trace.

- Using an unknown metric in a PM sampling timeline section file is now an error.

- Fixed issues with opcode category tooltips in the Instruction Statistics charts.

- Fixed issues in node-level profiling of CUDA device launchable graphs.