Anyone has a dhrystone DMIPS/Mhz score on a STM32H7 M4 core ? I only got a 0.37

[Ss.9]

 I used the sram and got a 0.37 , Pretty sure this is not right. 

I use -O2 and hard-float, others remain default.

Can any one tell me what should I do next?

[Tesla DeLorean]

I don't spend a lot of time dwelling on this, but an M4F should probably yield closer to a 0.7 if the code and libraries are optimized.

One of the issues here is that this one doesn't have ITCM//DTCM RAM to work with, or a FLASH/ART path into the prefetcher.

Which SRAM are you using? SRAM[1..3] would be the closest coupled.

[Ss.9]

I use the SRAM1, which starts from 0x10000000. According official document, the score should be 1.25. Still a long gap.