When i am caching out a bifrost sim, if my file size per frame goes above about 4.2gb. when i try to load the cache back in i get this error.
"K:/cache/bifrost/Bifrost_test_06/bifrostLiquidContainer1_p.0047.bif (Overflow on file size)" in the console window and the cache wont load.
As long as i keep my files per frame below this size its fine.
is this a problem with bifrost?
thanks
Arthur
when calculating a sim, bifrost doesnt show up as a seperate process in the task manager, it shows maya using the cpu process.
Arthur
it is the particle cache that is going over 4.2gb and yes this is a large file, but i am siming a car splash that is pretty close to camera for film and yes i can get around it by layering which is what i will do .
but it is not unheard of to have extremly large cache files when dealing with film res assets on, so i am surprised that maya can write out this size file but cant read it back in
Arthur
my sim size per frame ranges from 1.2gb to 4.7 gb per frame.
its about 80mil particles and 42mil voxels.
my scene is set to cm's and i am working on 12 x 12 units for the actual bifrost emiter.
my voxel size is down to .012
This sim is a 4k shot with a car landing into the ocean and is full frame, so far i have 3 layers of different bifrost sim's and particle for the effect, and yes i can reduce to get the file under 4.2gb.
But it would be good to know if this 4.2gb is a limitation.
and i have worked with larger sims in softimage and houdini, and for a feature film effect i dont think it's unheard of having large sim's
Arthur
Y'know, I apologize for not believing you at first 🙂
This is a bug, and I'm calling this a showstopper. The ID for this issue is:
MAYA-38451 Large user cache files not readable
I was easily able to reproduce this using Maya 2015 SP2 (which was released this week).
We're working on compression for .bif files at the moment, which will fix the problem a bit -- until you hit that limit again. The underlying issue is: why can't Bifrost read files over a certain size?
the compression will help, look forward to seeing a fix for this, as bifrost is looking pretty sweet, but i am constantly hitting the 4.2gb limit.
cheers
arthur
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