bandwidthTest - Bandwidth Test

Description

This is a simple test program to measure the memcopy bandwidth of the GPU and memcpy bandwidth across PCI-e. This test application is capable of measuring device to device copy bandwidth (both inter device and intra device), host to device copy bandwidth for pageable and page-locked memory, and device to host copy bandwidth for pageable and page-locked memory.

Key Concepts

CUDA Streams and Events, Performance Strategies

Supported SM Architectures

SM 3.5 SM 3.7 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

Supported OSes

Linux, Windows

Supported CPU Architecture

x86_64, ppc64le, armv7l

CUDA APIs involved

CUDA Runtime API

cudaFree, cudaEventRecord, cudaMallocHost, cudaHostAlloc, cudaEventCreate, cudaGetDeviceCount, cudaEventElapsedTime, cudaDeviceSynchronize, cudaFreeHost, cudaMalloc, cudaEventDestroy, cudaSetDevice, cudaMemcpyAsync, cudaMemcpy, cudaGetErrorString, cudaGetDeviceProperties, cudaMemcpyPeerAsync, cudaDeviceCanAccessPeer, cudaDeviceEnablePeerAccess

Prerequisites

Download and install the CUDA Toolkit 11.6 for your corresponding platform.

Build

The 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, armv7l. 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
$ make TARGET_ARCH=armv7l
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++

Command Line Arguments

./bandwidthTest --help

Example

./bandwidthTest --device=2,3 --inter --memory=pinned --mode=range --start=1000000000 --end=50000000000 --increment=10000000000

CHN-ChenYi / CudaBandwidthTest