What is NVIDIA Nsight Compute and how to use it?

NVIDIA Nsight Compute is a powerful profiler for analyzing the performance of CUDA applications on GPUs. It allows detailed examination of how CUDA kernels are executed, identifying bottlenecks and optimizing GPU resource usage.

Main features:

• Collecting detailed statistics on CUDA kernel execution
• Analyzing memory usage, compute blocks, registers, and other resources
• Visualizing timing diagrams and metrics
• Support for command-line and graphical interfaces

How to use:

1. Run your application with Nsight Compute, for example:

nv-nsight-cu-cli ./my_cuda_app

2. After execution, you will receive a report with performance metrics.
3. Analyze the report to identify where delays or inefficient resource usage occur.
4. Make changes to your CUDA code based on the analysis to optimize performance.

Nsight Compute is especially useful for senior developers and researchers working with high-performance computing and requiring a deep understanding of GPU behavior.