Hi guys I tried to use Zbrush4R7 64 bit on a computer with 64GB of RAM. I was still not able to subdivide a simple mesh over 16 million polygons. memory usage was around 4GB and I still had over 53GB of free memory. Why doesn’t the 64 bit version let me subdivide further. I should be able to at least subdivide once more, shouldn’t I?
Preferences/Mem tab to set maxpolypermesh.
I’m getting 77mil on 16gb. Wonder what it will be with 64? let me know.
I got 16 gigs of ram and can only get tools to about 30million. Have everything set right.
The 64 bit program limit is 80 million per subtool. If your memory preference is set at the maximum and you cant divide further, it’s because it would result in a mesh that was over 80 million polys. So basically, any object over about 20 million (20x4=80) polygons will not subdivide further (unless only part of the model is subdivided). That doesn’t mean your poly limit is 20 mil–an 18 million poly mesh will subdivide into a 72 million poly object.
Reduce geometry in base object or split parts into subtools in order to get that final level of subdivision. And keep in mind this is per subtool. You can have a combined file with hundreds of millions of polygons, depending on system.
If you actually feel you need more than 80 million polys for a single object, god help you. I don’t even want to know what could require that.
I’m aware its based on a per subtool basis and no I do not need 80million polys:D I was just curiuos because I’ve seen people claiming 40million+ with only 16gb ram and didn’t know if something was screwed up on my end.
Well, then it’s probably just a matter of adjusting your max poly per mesh limit up in the preferences (an earlier poster mentioned how to do that), or trying to divide a mesh that would result in a mesh that exceeded that limit.
I’ve gone well in excess of 40 million polys with “only” 16 gb of ram.
well then something is clearly wrong. make a default plane3d, make polymesh3d, subdivide 8 times you end up with 16.77 Million polys. Which btw is still under 20 million. When I try to subdivide one mode time zbrush doesn’t let me
Again last time I checked 16.77 Million multiplied by 4 did not exceed 80 million. Call me technical but this doesn’t compute. BTW it does the same thing on my work computer with 64GB of ram.
The thing is when I am supposed to be able to do this, because the memory setting tells me I can, I expect it to work. In this case it clearly doesn’t, and I wanna know why.
Your math are not wrong… but you are counting in POLY… in fact mesh in zbrush are counted in vertex. It happen that a plan have a lot of vertex in the perimeter. More for the same quantity of poly then a cube because in a cube linked vertex to create a ploy and not in the plan border.
Anyway you can go to 80M with any “real” modeling object.
Elemmanuel
You’re not being limited by program setting there. You’re getting the message that ZB doesn’t think you have enough ram to handle it. I honestly don’t know. I just divided a sphere into the 50 million poly range with no problem with 16 gb of ram, but I hit the same wall you did trying to divide an 17 million poly object. I don’t know how much RAM it thinks it needs for a 70+ million object, but surely your machine with 64 gb of ram should be enough.
Your mem is fine. If you cranked up to the maximum of 4096 and max ploy to 80 millions you are good. You can get closely to 80 millions as your base mesh will let you. I’m working in three different studio (well freelancing in 2 studios and giving classes in one school to be exact) and the computers spec are allover from 16 core pc with 64 gig of ram to pc with 8 core 16 ram and others with Mac… The issues are not with your spec (unless you have an old machine), the issues is most likely to be the plan 3d mesh! Try to subdivide a “real” production object and it will be get as close to 80 millions as it can.
For the test you can even try with a 3d terrain and it will subdivide above 16 millions.