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README.md

cudaNvSciBufMultiplanar - CUDA NvSciBufMultiplanar Image Samples

Description

This sample demonstrates CUDA-NvSciBuf Interop for Multiplanar images. A YUV 420 multiplanar image is flipped and allocated using NvSciBuf APIs and imported into CUDA with CUDA External Resource Interoperability. A CUDA surface is created from the corresponding mapped CUDA array and again bit flipping is performed on the surface. The result is copied back to a YUV image which is compared against the input.

Key Concepts

CUDA NvSci Interop, Data Parallel Algorithms, Image Processing

Supported SM Architectures

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 SM 10.0 SM 10.1 SM 12.0

Supported OSes

Linux

Supported CPU Architecture

aarch64

CUDA APIs involved

CUDA Runtime API

cudaDeviceGetAttribute, cudaNvSciBufMultiplanar, cudaDestroyExternalMemory, cuDriverGetVersion, cuDeviceGetUuid, cudaSetDevice, cudaGetMipmappedArrayLevel, cudaFreeMipmappedArray, cudaImportExternalMemory, cudaCreateChannelDesc, cudaExternalMemoryGetMappedMipmappedArray, cuCtxSynchronize, cudaMemcpy2DToArray, cudaMemcpy2DFromArray

Dependencies needed to build/run

NVSCI

Prerequisites

Download and install the CUDA Toolkit 12.8 for your corresponding platform. Make sure the dependencies mentioned in Dependencies section above are installed.

Build and Run

Linux

The Linux samples are built using makefiles. To use the makefiles, change the current directory to the sample directory you wish to build, and run make:

$ cd <sample_dir>
$ make

The samples makefiles can take advantage of certain options:

  • TARGET_ARCH= - cross-compile targeting a specific architecture. Allowed architectures are aarch64. By default, TARGET_ARCH is set to HOST_ARCH. On a x86_64 machine, not setting TARGET_ARCH is the equivalent of setting TARGET_ARCH=x86_64.
    $ make TARGET_ARCH=aarch64
    See here for more details.

  • dbg=1 - build with debug symbols

    $ make dbg=1

  • SMS="A B ..." - override the SM architectures for which the sample will be built, where "A B ..." is a space-delimited list of SM architectures. For example, to generate SASS for SM 50 and SM 60, use SMS="50 60".

    $ make SMS="50 60"

  • HOST_COMPILER=<host_compiler> - override the default g++ host compiler. See the Linux Installation Guide for a list of supported host compilers.

    $ make HOST_COMPILER=g++

References (for more details)