Weird bug

Autonomous Machines Robotics - Isaac Isaac Gym
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1

I just start using Isaac-gym, and I follow the install guidance. But why I try to run example, it show 65837 segmentation fault (core dumped)
I check dependencies, list as follows

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I write a very simple program to show the bug (it is due to create_sim)

from isaacgym import gymapi

gym = gymapi.acquire_gym()
sim_params = gymapi.SimParams()
sim_params.physx.use_gpu = True
try:
    sim = gym.create_sim(0, 0, gymapi.SIM_PHYSX, sim_params)
except:
    print("except")

print("done")

The output is


Importing module 'gym_38'
(/root/project/isaacgym/python/isaacgym/_bindings/linux-x86_64/gym_38.s0)
Setting GYM_USD_PLUG_INFO_PATH to /root/project/isaacgym/python/isaacgym/_bindings/linux-x86_64/usd/plugInfo.json
Not connected to PVD
+++ Using GPU PhysX
Physics Engine: PhysX
Physics Device: cuda:0
GPU Pipeline: disabled
[1]
78615 segmentation fault (core dumped)
python debug. py

create_sim Doesn’t success and throw core dumped. Anyone know why? Or have any advice? Thank a lot!

2

I find out, it maybe because Isaac gym can’t find CUDA device, I am using RTX3090 and it tell me out of memory While using 0% memory. So I guess, Isaac gym doesn’t find graph card.

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I will try to debug create_sim and test if Isaac gym recognizes GPU or not. Any advice will be helpful!

3

OK, for anyone facing the same problem, it is due to driver version!
The document said 470 and greater, and I use 495, BUT! Actually 510 worked!
The working config is:
CUDA 11.3
Driver 510.60.02
PyTorch 1.10.0

This Post have more infos.

4

Hi, did you try to set graphics_device=-1? It seems setting graphics_devices as -1 will stop the simulator from rendering (both for viewer image or camera image) and finish the create_sim function.

I’m just making sure that I have met the same problem as yours.

5

where can we set this parameter?

1 Like
6

When calling gym.create_sim. It is the param2 (referring to the documentation)

Typically in the create_sim method of legged_robot.py of the legged_gym codebase.