Hi.
I felt caching is faster in ROPOutputDriver than file-node, not sure how many users would disagree that.
In dopnet, Is there any way to continue/append caching with ROPOutputDriver after restarting houdini.

Does ROPOutputDriver only write cache? is there any way to read existing cache for some frames and then write the new frames…

thanks in advance
Shan

By caching, do you mean just playing it and then it's in your memory cache? If so, then, yes it might be faster, only because it doesnt have to write it to disk every frame. This is fine until you have complex sims or you run out of memory and it crashes. You could always cache your sim and then write to disk, that would be really fast as well.

If you want to write you sim to disk so that if there's a power outage(or any other reason why it might have failed mid simulation) your sim will start where it left off, you need to use a File DOP, which will write out the sim data. If you write out the sim as a bgeo it will not start where you left off. It will start simming from frame 1 and then start writing bgeo files from whatever file it last wrote out. Look through the help and the sidefx fluid tutorials for a proper setup and further clarification - http://www.sidefx.com/index.php?option=com_content&task=view&id=1301&Itemid=132 [sidefx.com]