3 ms·
Does anyone have an idea what might cause the small bump/spike in performance is on the CPU-8 graph at approx 1e6 elements? It looks to be worth around 20-25% o
by jbert 14y ago
Does anyone have an idea what might cause the small bump/spike in performance is on the CPU-8 graph at approx 1e6 elements? It looks to be worth around 20-25% of the performance.
If it's related to a sizing parameter of the parallelisation, that suggests that choosing that parameter well could be important.
- supergirl 14y agoIt looks like a sudden degradation of performance. Might be the point when the caches become full. That CPU has 6MB L3 + 256KB L2 x 8 which means ~8MB. The bump is at 1043786 elements which require 8154KB of memory.