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cuda-samples/Samples/2_Concepts_and_Techniques/cuHook
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README.md Updating Samples for 12.1 2023-03-01 01:41:29 +00:00

README.md

cuHook - CUDA Interception Library

Description

This sample demonstrates how to build and use an intercept library with CUDA. The library has to be loaded via LD_PRELOAD, e.g. LD_PRELOAD=<full_path>/libcuhook.so.1 ./cuHook

NOTE: Sample will be waived if the glibc version >= 2.34, as the sample was using these private glibc functions __libc_dlsym(), __libc_dlopen_mode() which are not exposed in 2.34 version.

Key Concepts

Debugging

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

Supported CPU Architecture

x86_64, ppc64le

CUDA APIs involved

CUDA Driver API

cuHook, cuMemAlloc, cuHookInfo, cuHookRegisterCallback, cuCtxDestroy, cuMemFree, cuDeviceGetCount, cuCtxCreate, cuInit

CUDA Runtime API

cudaDeviceReset, cudaFree

Prerequisites

Download and install the CUDA Toolkit 12.1 for your corresponding platform.

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 x86_64, ppc64le. 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=x86_64
    $ make TARGET_ARCH=ppc64le
    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)