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ColecloughGeorge

Issue with playback simulation on low ram (32gb) pc

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Hi Guys
 
I have a fairly high res flip sim (by student standards, about 3 gig per frame) and I needed to cache it out as a .sim to utilise checkpoints
I need to read this simulation in using playback simulation on the dopnet and a dop IO node with the flip presets in order to pull in the velocity fields for a whitewater sim, however when I do this the computer gets stuck on the first frame I load in.
My only current solution is to go through every frame, unticking and reticking the playback simulation button which would take me 2 minutes of load time per frame for 432 frames.

An alternative I've considered is the Houdini python module however I am not familiar with this and don't know if the required functions exist.
Please could someone with more knowledge on this tell me if this is possible in the python module or whether there is an alternate solution such as a way to pull velocity fields from a .sim cache

Thanks :)
George

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Posted (edited)

Hi,

I have 32 RAM aswell.

I was helping a person here on ODFORCE with some "ARNOLD" render options etc...

Ya that was no able to move in the view port etc...

So for me what I did was ROP output the sim to a bgeo sequence.

And the loaded it back in with the File node.

Also if you export Deleting some attribute that you don´t need the bgeo file size will decrease considerably.

However. this is only for viewing purposes. then if you need to tweak etc.. just do the same but manually delete the files.

You make another process .

 

Okay it´s just a suggestion okay. I would not consider this something but a PATCH to do something due to the fact that you are experiencing 

a lack of RAM , 

 

Cheers MangiFLIP_BGEO.thumb.jpg.49840f032949cacc4fb9dde97d8fdf6b.jpg

Edited by mangi
  • Like 1

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Hi thanks for the quick reply

My issue is that when I do cache out my sim as a bgeo.sc, it only caches out the first frame I load

So if I first view my scene on frame 1030 and then cache out the sequence, it will save out many copies of frame 1030

I know the data is there though as when I just playback the .sim with a file sop then the whole sequence is there, the issue lies in the playback simulation feature.

Thanks:)

13 hours ago, mangi said:

So for me what I did was ROP output the sim to a bgeo sequence.

 

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30 minutes ago, CinnamonMetal said:

32 gigs should not be a problem :huh:

fair enough

that was just my guess at why it was playing up

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Hi George,

It should be simple to play back any simulation , exporting bgeo or using Sim cacha from the Autodop network.

I can not figure out what you are having Issues with by just your explanations.

Her are some snap shots, 

Are your using the expresion $F with your bgeo sequence.

 

It would be much easier if there where a scene like yours or a simple version to see exactly what you have.

 

 

Cheers , but this should be a simple thing.

 

 

 

image.png

Cache Sim.jpg

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