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Interstellar movie black hole implemented with Einstein's equations in C++

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Re: Interstellar movie black hole implemented with Einstein's equations in C++

#61

I worked on this movie, I was at DNEG at the time. One of the standout things that I remember is that this particular simulation was toxic to the fileserver that it was being stored on. From what I recall, I don't think that it was running on that many machines at once. Mainly because it required the high memory nodes that were expensive. I think it was only running on ~10 possibly 50 machines concurrently. But I cou…

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Re: Interstellar movie black hole implemented with Einstein's equations in C++

#62

It is a pity they didn't spend comparable effort on the story. I thought it was a really disappointing film, especially after they banged on so much about how good the physics in it was (apart from the black hole rendering, it wasn't).

We're talking about a movie in which a space agency builds an enormous rocket entirely in secret and without any suppliers; then enrolls the astronaut at the head of the mission on the same day of the departure; and finally launches the rocket from inside its office halls. ¯\_(ツ)_/¯ https://www.youtube.com/watch?v=x9xFRch7N5o

It also hard to believe that being close enough to a giant black hole that it causes massive time dilation, doesn't seem to cause any other issues beyond large waves.

Re: Interstellar movie black hole implemented with Einstein's equations in C++

#63
post #28

If you want to avoid opening Twitter (now known as X), here is the link to the paper: https://arxiv.org/pdf/1502.03808 TLDR “A typical IMAX image has 23 million pixels, and for Interstellar we had to generate many thousand images, so DNGR had to be very efficient. It has 40,000 lines of C++ code and runs across Double Negative’s Linux-based render-farm. Depending on the degree of gravitational lensing in an image, it…

How fast could this run in a modern CPU with a modern GPU?

There's a nice recreation on Shadertoy:

https://www.shadertoy.com/view/lstSRS

No idea if it's doing the same simulation though.

Re: Interstellar movie black hole implemented with Einstein's equations in C++

#64

It is a pity they didn't spend comparable effort on the story. I thought it was a really disappointing film, especially after they banged on so much about how good the physics in it was (apart from the black hole rendering, it wasn't).

We're talking about a movie in which a space agency builds an enormous rocket entirely in secret and without any suppliers; then enrolls the astronaut at the head of the mission on the same day of the departure; and finally launches the rocket from inside its office halls. ¯\_(ツ)_/¯ https://www.youtube.com/watch?v=x9xFRch7N5o

They obviously used the same contractors that Bond villains use to build super bases inside volcanoes without anyone noticing.

Re: Interstellar movie black hole implemented with Einstein's equations in C++

#66

Earlier quoted context omitted.

100% agree, like you I was hyped after the pre-release teaser PR stuff came out about the realistic black hole rendering etc, was hoping for an actually decent sci-fi and then just a lame story culminating in "space ghosts" for me, arguably most disappointing movie ever

Don't watch 'Ad Astra' then. That's also incredibly disappointing (IMHO).

It's all about the expectations. The SciFi part is just a setting in this one.

Re: Interstellar movie black hole implemented with Einstein's equations in C++

#67
post #59
post #13

Earlier quoted context omitted.

Their starship was bullshit. On earth they needed a big Saturn 5 like rocket to bring it into space and later they fly into orbit like it's nothing. If the planets they visited had much lower gravity then earth this may be possible, but this wasn't noticeable or talked about. And even on Mars you need much more fuel to get into orbit than could be stored in their tiny ship.

Well, if you look for this, many if not most movies will have some inaccuracy or holes in explanation like this. In the end, I watch movies for entertainment. If I'm looking for scientific precision, I see a documentary instead.

Yes. Maybe don't make scientific accuracy a big part of your marketing campaign though.

Re: Interstellar movie black hole implemented with Einstein's equations in C++

#68

I worked on this movie, I was at DNEG at the time. One of the standout things that I remember is that this particular simulation was toxic to the fileserver that it was being stored on. From what I recall, I don't think that it was running on that many machines at once. Mainly because it required the high memory nodes that were expensive. I think it was only running on ~10 possibly 50 machines concurrently. But I cou…

Is it just so much read/write? I'm having hard time understanding why a simulation would need so much read/write to disk? Wouldn't the CPU and RAM be more important for calculations, then write them to disk when done?

Re: Interstellar movie black hole implemented with Einstein's equations in C++

#69
post #54

Earlier quoted context omitted.

Is there a visualization of the fully realistic version available somewhere?

Yes, there is https://www.researchgate.net/figure/a-The-moderately-realist...

That looks so much more menacing, almost supernatural, a stellar ghost.

Re: Interstellar movie black hole implemented with Einstein's equations in C++

#70
post #20

[possible spoiler alert] Is Intersetllar the movie where Matthew McConaughey turned into a bookcase?

He didn't turn into a book case, but a book case as a sort of representation of multi dimensional space was a part of the movie, yes.

And the infinite book case is a shout out to Borges, right?
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