bunny takes forever...

[sonnyffff]

I am trying to run the program with bunny.json as input, however I kind of encountered infinite loop. Other pictures worked fine though.

[MurraySmith27]

My bunny took around 15 minutes to render. If you think about it it's a lot of processing. 1000 triangles * 230400 pixels, each one solving a 3 x 3 system of equations to find t, alpha and beta. If you want to test quickly try turning the resolution down in main.cpp.

I am also kinda concerned about this though and would love to hear from a TA. Is there a timeout on the testing machines? Can we expect the correct solution to take this long?

[alekao]

Mine also took a long time to render at first (around 5 min). After enabling compiler optimization it was basically instant. Instructions are at the end of README.

[sonnyffff]

My bunny took around 15 minutes to render. If you think about it it's a lot of processing. 1000 triangles * 230400 pixels, each one solving a 3 x 3 system of equations to find t, alpha and beta. If you want to test quickly try turning the resolution down in main.cpp.

I am also kinda concerned about this though and would love to hear from a TA. Is there a timeout on the testing machines? Can we expect the correct solution to take this long?

Thanks for the help, I changed height and width to 1/10 of the original and it took only about 30 seconds to render. Though the pictures are a bit small, they are enough to check the correctness.

[shahmeerathar]

Try compiling with optimization level -O3; significantly sped it up for me :)

[henrytwo]

Are we allowed to modify the script to use multithreading? After making this change locally, I'm able to render the full image in 5 seconds (fanless M1 Macbook Air btw)

[henrytwo]

I suppose we aren't going to be uploading main.cpp anyways, so it shouldn't really matter

[cherylchen2]

Mine took 150 mins :')