ShiqiYu / ShiqiYu/libfacedetection

How to make Multi-thread in Ubuntu18.04?

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C++
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Description

Hello, Mr Yu, Firstly,thank you for your detection source code ,and I want to know how to make Multi-thread in Ubuntu18.04?
I try :
air@air-G3-3590:/Tengine/libfacedetection/build$ cmake -O3 .. ; make
and I test, however it run in my PC at the same FPS, 17fps ,the same as
air@air-G3-3590:
/Tengine/libfacedetection/build$ cmake .. ; make
So the sencond question is what is mean "-O3", and how to use it ?

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Research direction

Start with the build commands and the libfacedetection/build directory mentioned in the issue, then inspect the project's CMake configuration and performance-related entry points. Clarify how multithreading is enabled, what the reported FPS difference means, and what the -O3 option affects; done means the Ubuntu 18.04 build and usage steps are documented.

Written by the indexing model from the issue text.

Assessment

Tech stack
cmake, cpp
Domain
build-system, computer-vision, performance
Issue type
Documentation
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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