Failed to acquire Dr interface


I was trying to reproduce this tutorial from python without using UI.
I did run and also enable omni.isaac.dr inside IsaacSim as noted in there in the link.

Then I’ve got this error as trying to acquire the Dr interface as in this example:

from omni.isaac.dr import _dr
dr = _dr.acquire_dr_interface()
RuntimeError: Failed to acquire interface: omni::isaac::dr::DomainRandomizer (pluginName: nullptr)
../../../include/carb/extras/ThreadLocal.h(83): set(): Assertion (res == 0) failed.
Trace/breakpoint trap (core dumped)

So what might I have missed there? (since the statements run just fine inside the Script Editor)

Thank you.

Besides, as directed in the tutorial, there is a required step that we have to enable the Domain Randomizerplugin under Extension or omni.isaac.dr under Window->Extension Managermenu.
How do we do that using script?

I actually made use of OmniKitHelper as in here:
but it does not seem to already enable dr plugin though.

Speaking of which, I could also see this arg:


which is passed to omniverse-kit as running it by OmniKitHelper._start_app().
So I guessed a similar one should be added for omni.isaac.dr but I’m not sure how, specifically about the number 0 there in the argument.

Ok, so I just added --verbose as running omniverse-kit app, which outputs:

2020-11-10 04:30:24 [4,221ms] [Info] [carb] Searching plugins in folder: .../ISAAC/ISAAC_SIM_2020_1/_build/target-deps/kit_sdk_release/_build/linux-x86_64/release/
self._dr = _dr.acquire_dr_interface()
RuntimeError: Failed to acquire interface: omni::isaac::dr::DomainRandomizer (pluginName: nullptr)

And indeed, there is no omni.isaac.dr plugin there, which only resides under ISAAC_SIM_2020_1/_build/linux-x86_64/release, specifically at:


The path has been already appended to LD_LIBRARY_PATH by but that’s only for the running.

So what else should be set up the make the plugin visible could you tell?

Thanks. @Sheikh_Dawood Would you happen to know about some idea? Thanks!

Hi. Can you try if the issue exists with Isaac Sim 2020.2?

[Moving this post to the Omniverse Isaac Sim category.]

@Sheikh_Dawood, would you mind passing me the download link. Though I registered to the Early Access program, I could only download 2020.1 version from these links:


Those links are for Isaac SDK.
Here’s the link for Isaac Sim:

1 Like

Oops, sorry I forgot IsaacSim is not part of Isaac SDK.
Yeah, it looks like the error is gone. I could see 2020.2 omniverse-kit version now could enable extensions from a whole folder, using f'--/app/extensions/folders2/{i}="<ext_folder>"'.

Besides, by the comment there, it would be great to enable these directly from .json file in upcoming versions.

Glad it work!
Thanks. I’ll send that feedback to the team.