Nsight Compute 2025.4 - New Features

Added support for profiling OptiX workloads with the interactive profile activity.
The Resources tool window now shows a CUDA ID column for graph resources.

Fixed issues in the Report Merge Tool.
Fixed issues in the Clustering Window.
Fixed an issue with the formatting of entries in the Inline Functions table.
Fixed an issue that could cause the UI to crash when switching between kernels in the Source page in certain cases.
Fixed an issue that the ncu CUDA Toolkit script may fail if unrecognized versions of Nsight Compute are installed separately.
Fixed several incorrect metrics in the PmSampling.section
Fixed an issue that PM Sampling timelines could be distorted due to broken initial samples.
Fixed a crash with node-level graph profiling in app-range replay mode. If graphs are uploaded outside the range, an error indicating that profiling it is not supported is now shown.
Fixed a crash when instantiating device-side graphs with memory nodes.

Added support for profiling CUDA tile workloads.
Introduced a new Tile section to summarize tile dimensions and pipeline utilization, displayed when enabled and a tile workload is profiled.
Source page supports correlation between SASS and high-level Tile code (limited to cuTile Python code).
Added a new ncu-repz file format for zstd compressed report files.
Added support for locking GPUs to boost clock instead of base on Ampere and newer GPU. Use the boost and force-boost options on supported drivers.
Warp sampling by default now focuses on the Not Issued ((_not_issued)) variants of the metrics. This is to avoid pointing to source locations where warp stalls are mitigated by having sufficient numbers of warps during an issue cycle to hide latency.
Added support for node-level profiling of CUDA conditional graphs, including device-updatable nodes and nodes that can set conditional graph handles.
Added support for node-level profiling of CUDA graphs launched from the device (DGL), including host graph nodes that can launch DGL.
Source page now displays symbol labels: A new column for symbol labels has been added, and symbol labels are shown alongside addresses in SASS instruction disassembly. This change aligns the output with that of the nvdisasm tool.
Added support for collecting Warp sampling metrics with PM sampling allowing user to see function-level warp stalls for the selected time range in the timeline. See the Function Stats tool window for details.

For a complete overview of all NVIDIA® Nsight™ Compute features and access to resources, please visit the main Nsight™ Compute page.

NVIDIA® Nsight™ Compute 2025.4 is available for download under the NVIDIA Registered Developer Program.