[HN Gopher] Measuring Acceleration Structures
       ___________________________________________________________________
        
       Measuring Acceleration Structures
        
       Author : ibobev
       Score  : 71 points
       Date   : 2025-04-02 12:28 UTC (10 hours ago)
        
 (HTM) web link (zeux.io)
 (TXT) w3m dump (zeux.io)
        
       | genpfault wrote:
       | See also:
       | 
       | https://news.ycombinator.com/item?id=43548212
       | 
       | https://news.ycombinator.com/item?id=43543933
        
         | vardump wrote:
         | Neither had any discussion?
        
       | whizzter wrote:
       | I wrote an non-RTX on-GPU raytracer a while back (naive compared
       | to this) and it's super-interesting to read about the advances in
       | compressing BVH structures.
       | 
       | But the changes also highlights a change in focus from just
       | implementing this naively(RDNA3 technically not too much removed
       | from the naive raytracer I wrote) to moving it to something
       | carefully engineered and optimized for memory bandwidth (with
       | savings circuits even built into silicon?).
        
       | vardump wrote:
       | Smaller data is where it's at when optimizing nowadays. Less
       | bandwidth required and higher cache hit rate.
       | 
       | You can compute a ton per bit transferred from DRAM. On both CPUs
       | and GPUs.
        
       ___________________________________________________________________
       (page generated 2025-04-02 23:01 UTC)