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Open-sourcing the MuJoCo physics simulator for robotics

deepmind.com

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Re: Open-sourcing the MuJoCo physics simulator for robotics

#31

Post by 5faulker »

rg111 wrote: post #30

MuJoCo is the standard in much of robotics, and recently in the Deep RL space. When I was learning Deep RL, I edged on what could be done through OpenAI gym, or self-made environments, I decided to begin working with MuJoCo. But for an undergrad student from a developing country, the fees were extremely high. So, I just didn't go forward with Deep RL much. I dabbled for a while and tried using PyBullet. Did not go th…

It would still be a while that we achieve emergence (if that's even possible) anyway, so time is kind of on our side.

Re: Open-sourcing the MuJoCo physics simulator for robotics

#32

Post by hacoo »

tiborsaas wrote: post #24
6gvONxR4sf7o wrote: post #18

Earlier quoted context omitted.

I have personally spent tons of time dealing with models exploiting physics issues. It’s a major issue. It’s true that either can adequately simulate the setups, but is it true that either can be equally exploited? I genuinely don’t know. I kinda assumed physx is more exploitable.

What kind of exploits are you talking about? Cheating in games for example?

I think this is referring to inaccuracies of simulation which the RL model can learn to exploit. Sort of a local minimum that doesn't exist in the real world.

Re: Open-sourcing the MuJoCo physics simulator for robotics

#34

Post by Permit »

querez wrote: post #25
atty wrote: post #4

I tend to be more than a little skeptical of organizations like DeepMind and (especially) OpenAI lately, when it comes to their pledges to democratize their advances in AI/ML/robotics. This, however, is 100% a great move by DeepMind in the support of the community as a whole. Kudos to the team, and a big thanks as well.

Pretty sure this was just a reaction to losing so much mindshare to Brax since that came out.

My understanding is that DeepMind did not previously own MuJoCo, but today they have acquired it and released it for free.

On the other hand, Brax is developed by Google and is written using Jax (which DeepMind loves and uses extensively).

Why would DeepMind have been concerned that people were switching to Brax?

Re: Open-sourcing the MuJoCo physics simulator for robotics

#35

Post by EvgeniyZh »

rg111 wrote: post #30

MuJoCo is the standard in much of robotics, and recently in the Deep RL space. When I was learning Deep RL, I edged on what could be done through OpenAI gym, or self-made environments, I decided to begin working with MuJoCo. But for an undergrad student from a developing country, the fees were extremely high. So, I just didn't go forward with Deep RL much. I dabbled for a while and tried using PyBullet. Did not go th…

Pretty sure it had free educational license tho

Re: Open-sourcing the MuJoCo physics simulator for robotics

#36

Post by [deleted] »

tiborsaas wrote: post #24
6gvONxR4sf7o wrote: post #18

Earlier quoted context omitted.

I have personally spent tons of time dealing with models exploiting physics issues. It’s a major issue. It’s true that either can adequately simulate the setups, but is it true that either can be equally exploited? I genuinely don’t know. I kinda assumed physx is more exploitable.

What kind of exploits are you talking about? Cheating in games for example?

[deleted]

Re: Open-sourcing the MuJoCo physics simulator for robotics

#37

Post by GistNoesis »

minimaxir wrote: post #11
jefft255 wrote: post #2

This is really good news. It was a really contentious issue in RL and robotics research to be so reliant on proprietary (and very expensive) software.

For more context on "very expensive," a MuJoCo license was several hundreds of dollars .

For reference here is the price before as seen on november 2020 (previous internet archive screenshot), https://web.archive.org/web/20201111235930/https://www.robot...

TLDR: personal non commercial 500$/year for usage on up to 3 computers personal commercial 2000$/year

Re: Open-sourcing the MuJoCo physics simulator for robotics

#38

Post by rg111 »

EvgeniyZh wrote: post #35
rg111 wrote: post #30

MuJoCo is the standard in much of robotics, and recently in the Deep RL space. When I was learning Deep RL, I edged on what could be done through OpenAI gym, or self-made environments, I decided to begin working with MuJoCo. But for an undergrad student from a developing country, the fees were extremely high. So, I just didn't go forward with Deep RL much. I dabbled for a while and tried using PyBullet. Did not go th…

Pretty sure it had free educational license tho

My uni was not rich enough to have an email server for students.

So, I did not have a uni mail address.

That was required.

Re: Open-sourcing the MuJoCo physics simulator for robotics

#39

Post by CryingSofa »

EvgeniyZh wrote: post #35
rg111 wrote: post #30

MuJoCo is the standard in much of robotics, and recently in the Deep RL space. When I was learning Deep RL, I edged on what could be done through OpenAI gym, or self-made environments, I decided to begin working with MuJoCo. But for an undergrad student from a developing country, the fees were extremely high. So, I just didn't go forward with Deep RL much. I dabbled for a while and tried using PyBullet. Did not go th…

Pretty sure it had free educational license tho

Somewhat. The free educational license was only acceptable for 'personal' projects, so not suitable for class work.
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