On GPUs you can program the L1 cache at least. I’ve never had much success with it though, as in more recent architectures I found the default L1 and the schedu

On GPUs you can program the L1 cache at least. I’ve never had much success with it though, as in more recent architectures I found the default L1 and the schedulers are doing a good job at keeping occupancy high and by wiring it you either don’t win anything or it often even gets slower - and there’s no way to know in advance since scheduler and cache architecture are largely a trade secret. In general, GPUs sre optimized to use their high memory bandwidth through an extreme amount of hyperthreading, and the number of possible threads goes down with the ressources your kernel occupies.