After following instructions on how to change DRAM PLL frequency, here is a quick comparison of Stream, running on the i.MX 8MM. Normalized to LPDDR4-3000, based on 5.4.24_2.1.0 BSP
Stream | LP4-3000 | LP4-2400 | DDR4-2400 | LPDDR-1866 |
Copy: | 1 | 0.810 | 0.735 | 0.497 |
Scale: | 1 | 0.896 | 0.765 | 0.756 |
Add: | 1 | 0.899 | 0.683 | 0.762 |
Triad: | 1 | 0.902 | 0.680 | 0.767 |