• C166; RAM slower than ROM
    Hi all, This problem has been on hold for a while but a collegue of mine is looking at it again: Our app is running from flash but we want to run it from RAM (in case we would have performance issues...
  • PixMap Surface slower and slower, why?
    Hi everyone. I am using Mali-400 GPU, on Allwinner A20, under linux. I am using egl pixmap surface. Rendering results correct, but every time when i calling glDraw with the same  parameters, the runtime...
  • An algorithm on a M7 is slower than on M4 - why?
    Hi there, we are working on an audio project, where we move some firmware from an STM32F407 (ARM Cortex M4) to an ATSAME70 (ARM Cortex M7). Despite the ATSAME70 runing at 300 MHz, while the STM32F407...
  • a slower flash
    i purchased a flash module am29f040b-90J its access time is 90ns, but the microcontroller has 80/60ns instruction cyle. Can I use this flash with the microcontroller? Or is it preferrable that...
  • why vectorized code is slower?
    I am trying to make my image processing program faster. So, i changed my  scalar code into vectorized code. for understanding, the purpose of program is" read right(4) and left(4) total 8 pixel of target...