Forums - Why my DSP program is so slow?

1 post / 0 new
or Register
Why my DSP program is so slow?
icework
Join Date: 3 Mar 20
Posts: 8
Posted: Thu, 2020-04-23 06:53
Top

Hello Everyone:

      I run the example (caculator_multi_domain) in the Hexagon_Examples, 

      I add the time-record code at the start and end for "sum", and add them to both ARM(local) and DSP

      they both run 1000 times, and the data count is 1024, at last, I am surprised at their result:

      DSP's time-cost is about 800ms

      ARM's time-cost is about 0.7ms

      I'm very confused that why my dsp program is so slow?

      Is there any one would like to tell me why?

      My Qualcomm Chip is DM845, and my compile cmd is: make tree VERBOSE=1 V=hexagon_Release_dynamic_toolv83_v65

  • Up0
  • Down0

Opinions expressed in the content posted here are the personal opinions of the original authors, and do not necessarily reflect those of Qualcomm Incorporated or its subsidiaries (“Qualcomm”). The content is provided for informational purposes only and is not meant to be an endorsement or representation by Qualcomm or any other party. This site may also provide links or references to non-Qualcomm sites and resources. Qualcomm makes no representations, warranties, or other commitments whatsoever about any non-Qualcomm sites or third-party resources that may be referenced, accessible from, or linked to this site.