Iterative processing with Job System.

Hi, I made simple Position Based Dynamics system with ECS and Job system. It quite works well but I have some concern about its implementation.

My concern is about iterative job sets. Here is PBD algorithm which I used:

1. Predirct next position by verlet integration (IJobParallelFor) : Job count = 1
start loop until solver iteration count
2. Solve Constraints for each constraint types (Per type IJobParallelFor) : Job count = Constraint Type count + other jobs (averaging solve deltas, clear temporary containers, and so on)
end loop
3. Assign final next positions to current positions

The problem is that many jobs are created when I increased solver iteration count. When solver iteration count is small (1~30), its okay. But how about 1000~? single system schedule massive jobs every frame, then CPU load of scheduling job may be bigger than actual work processing load.

Is there any solution about this situation?

Thanks.

 

Speaking of... can we do something about it? I takes for my use case almost 3ms if TransformAccesArray is big (like 100k big). I managed to do almost completely async transform manipulation, this is only thing taking considerable time on main thread.