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Samples for CUDA Developers which demonstrates features in CUDA Toolkit
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cuda-samples/Samples/0_Introduction/simpleOccupancy
Rob Armstrong 14b1bfdcc4
Replace README references to "CUDA Toolkit 12.5" with general "CUDA Toolkit" 		2 months ago
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.vscode add and update samples for CUDA 11.6 4 years ago
CMakeLists.txt Update all sample CMakeLists.txt to include ENABLE_CUDA_DEBUG flag to enable cuda-gdb 4 months ago
README.md Replace README references to "CUDA Toolkit 12.5" with general "CUDA Toolkit" 2 months ago
simpleOccupancy.cu Apply consistent code formatting across the repo. Add clang-format and pre-commit hooks. 3 months ago

README.md

simpleOccupancy - simpleOccupancy

Description

This sample demonstrates the basic usage of the CUDA occupancy calculator and occupancy-based launch configurator APIs by launching a kernel with the launch configurator, and measures the utilization difference against a manually configured launch.

Key Concepts

Occupancy Calculator

Supported SM Architectures

SM 5.0 SM 5.2 SM 5.3 SM 6.0 SM 6.1 SM 7.0 SM 7.2 SM 7.5 SM 8.0 SM 8.6 SM 8.7 SM 8.9 SM 9.0

Supported OSes

Linux, Windows

Supported CPU Architecture

x86_64, armv7l

CUDA APIs involved

CUDA Runtime API

cudaMemcpy, cudaFree, cudaDeviceSynchronize, cudaEventRecord, cudaGetDevice, cudaMalloc, cudaEventElapsedTime, cudaOccupancyMaxActiveBlocksPerMultiprocessor, cudaGetDeviceProperties, cudaOccupancyMaxPotentialBlockSize, cudaEventCreate

Prerequisites

Download and install the CUDA Toolkit for your corresponding platform.

References (for more details)