21.8 Million Poly Low Mem Error

[system]

It seems like when I save a project with even a single sub tool that has polys in excess of 21.8 million Zbrush will give me a low memory warning when I try to open that file and then crash.

If I take the same project and lower the subD levels of all sub tools so that each and every one of them is below 21.8 million and then save that document… the document will not give a low memory error the next time i try to open it.

If a single subtool in that ZPR or ZTL document is over 21.8 mil… LOW MEMORY ERROR… CRASH!

The max rez of those tools can be well over 21.8 million polys at the time that I save them, however they must be put down to lower subD levels (like 2 or 3) to prevent this error.

Zbrush will not retain any MaxPolyPerMesh settings over 21.8 Mil, even when I Store Config.

[goast666]

The reason for the memory error is what needs to be loaded first. If you have zbrush starting with a million alphas at load, then it takes longer, and eats more memory to do so. The same thing applies to a mesh.

If you’re having the error with going over 21 mill per mesh (i can’t see why you’d need to though) you can break your mesh into smaller parts so you can better manage the number of polygons per mesh, or you can use HD sculpting.

Your system probably isn’t set up to support more than 21 million polygons, mine doesn’t and I have well over 4GB of memory, but with zbrush being a 32bit application there isn’t much you can do about this.

The maxpolypermesh settings is looked at, at start up of zbrush. It reads your RAM and determines where it can safely work within. That is why it doesn’t change when you store the config. If you must allow more than 21mill you can set up a macro that will change this setting for you when you boot zbrush.

You can also, and should also always save your meshes at their lowest subD level. There is the “low all” button in the subtool panel that will let you do this. You should also remove all masks before saving.

Hope this helps.