Simulating Linday hairs

Jack of Spades

I'm having chronic problems simulating Linday's dForce hairs (Soft Classic Hair, Classic Blowout, Classic Long Hair, Long Wet Hair, Virgin Hair, etc.). Things get 30-50% through and freeze; I've left it overnight and it didn't recover; I have to kill Daz Studio and start over. Occasionally it will run properly; in those cases, it looks awesome. I've tried both single-frame and timeline. I'm using a Quadro RTX 5000 with 16GB RAM for dForce. Any suggestions of what else to try?

smaker1

Made some simulations recently (long wet hair, Soft classic hair) without any trouble and with a lower graphic card . My advice:

- hide all body parts not necessary for simu : feets, legs, eyes, tongue, eyelashes ,..... 

- same for all props, set, ... not necessary. 

- be careful about interpenetrations (check animation frames if used)

- leave place between head and props (cushions for example)

- apply the simu setting provided by Linday (I only change to animation if resquested)

  Simulation (30 frames) take 10 minutes approx. but results are there and I really love Linday hairs :-) !

TimberWolf

I'm not entirely sure whether the 16GB you quote is the VRAM of the RTX 5000 (it is) or your system RAM. dForce hairs will burn through system RAM with surprising ease during scene compilation and I'd recommend at least 64GB system RAM if you're going to be using them, especially on multiple figures or in complex scenes. You might get away with 32GB but a crash is normally Windows looking to page fault the memory and for some reason Studio never really plays ball. Some people get it to work, albeit slowly, but every time we've ever hit max system RAM useage the machine has fallen over, frozen, and won't use the page file.

In the end we stuffed 128GB into our rendering machine and we've only had it crash once due to an overly-enthusiastic animator.

jerham

Own and use mentioned hair products a lot and almost never have an issue with dforce. In most cases it takes about 10~15  minutes.to simulate the hair (RTX 3070/ 32GB RAM)

1. Avoid simulating too many DForce items in one go. simulate them in "layers" (for example first the clothing -> freeze the clothing  simulation in the paramater tab) -> then the hair)

2. Like smaker1 mentioned,  turn the simulation visibility off of all items that do not collide with the hair to off. A quick way:

- Select everything in the scene tab except the g8f and clothing  hair needs to collide with

- In the paramater tab select everything -> Turn off "Visible in simulation"