계기
isaac lab기반으로 강화학습하여 g1을 걸어 다니게 하는 unitree github을 발견했다.
뭐.. 지식은 하나도 없지만.. 우분투 짬바로
금방 세팅할 수 있지 않을까 했다.
이 페이지는 Isaac Sim 설치대한 내용을 다룬다.

링크
- Isaac Sim github
- Isaac Lab github
- Isaac Sim Doc → 5.0 버전으로 업데이트 중. 참고만 하기
What Is Isaac Sim? — Isaac Sim Documentation
What Is Isaac Sim? NVIDIA Isaac Sim™ is a reference application built on NVIDIA Omniverse that enables developers to develop, simulate, and test AI-driven robots in physically-based virtual environments. Design Isaac Sim comes with a collection of workfl
docs.isaacsim.omniverse.nvidia.com
GitHub - isaac-sim/IsaacLab: Unified framework for robot learning built on NVIDIA Isaac Sim
Unified framework for robot learning built on NVIDIA Isaac Sim - isaac-sim/IsaacLab
github.com
GitHub - isaac-sim/IsaacSim: NVIDIA Isaac Sim™ is an open-source application on NVIDIA Omniverse for developing, simulating, a
NVIDIA Isaac Sim™ is an open-source application on NVIDIA Omniverse for developing, simulating, and testing AI-driven robots in realistic virtual environments. - isaac-sim/IsaacSim
github.com
호환하는 버전
| Isaac Lab Version | Isaac Sim Version | python Version | GCC/G++ |
| feature/isaccsim_5_0 branch | Isaac Sim 5.0 | 3.11 | GCC/G++ 11 |
요구되는 GPU 사양
| Min | Recommended | Best |
| RTX 4080 | RTX 5080 | RTX PRO 6000 Blackwell Workstation |
현재 설치하는 PC 환경
- ubuntu 24.04
- python 3.12
- ros2 jazzy
- cuda 세팅
git lfs 설치 (설치 안 했을 경우)
sudo apt update
sudo apt install git-lfs
필수 소프트웨어 종속성
sudo apt-get install build-essential
24.04의 GCC/G++ 버전은 13
gcc --version
gcc (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0
Copyright (C) 2023 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
g++ --version
g++ (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0
Copyright (C) 2023 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Isaac Sim 5.0은 GCC/G++ 11을 사용해야 한다
sudo apt install gcc-11 g++-11
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-11 200
sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-11 200
선택) GCC/G++ 13으로 다시 되돌리기
- 설치
sudo apt update
sudo apt install gcc-13 g++-13
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-13 100
sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-13 100
- 13 버전으로 selection 넘버 입력하고 enter
sudo update-alternatives --config gcc
There are 2 choices for the alternative gcc (providing /usr/bin/gcc).
Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/bin/gcc-11 200 auto mode
1 /usr/bin/gcc-11 200 manual mode
2 /usr/bin/gcc-13 100 manual mode
Press <enter> to keep the current choice[*], or type selection number: 2
sudo update-alternatives --config g++
There are 2 choices for the alternative g++ (providing /usr/bin/g++).
Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/bin/g++-11 200 auto mode
1 /usr/bin/g++-11 200 manual mode
2 /usr/bin/g++-13 100 manual mode
Press <enter> to keep the current choice[*], or type selection number: 2
버전이 11로 바뀌었는지 확인
gcc --version
gcc (Ubuntu 11.4.0-9ubuntu1) 11.4.0
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
g++ --version
g++ (Ubuntu 11.4.0-9ubuntu1) 11.4.0
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
원하는 작업공간 Isaac Sim git clone
git clone <https://github.com/isaac-sim/IsaacSim.git> isaacsim
cd isaacsim
git lfs install
git lfs pull
빌드
- 빌드가 좀 시간이 걸린다.
./build.sh
- 아래처럼 뜨면 설치 완료 (약 10여분 소요)
BUILD (RELEASE) SUCCEEDED (Took 569.09 seconds)
실행
cd _build/linux-x86_64/release
./isaac-sim.sh
- 창이 뜨면 인내심을 갖고 계속 기다리자

맺음말
다음에 isaac lab 설치하고 g1 돌려보는데 다시 다 뒤집을 수도 있다. ㅎㅎ
일단 기록용으로 남겨두려고 한다.
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