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Altera_Forum
Honored Contributor I
1,347 Views

Cyclone V SoC - Time execution function - Cycle count

Hi everybody, 

 

I'm new on SoC architecture and I need to measure cycle count about some function using NEON instruction. 

 

My goal is to measure optmization code compared to an other architecture. 

 

In Texas Instrument or Analog Devices case, I can put MACRO on code. Theses MACRO allows an hardware cycle counter in order to calculate function cycle time. 

 

Example from Analog Devices: 

 

  • #include <cycle_count.h> 

  • START_CYCLE_COUNT(S) 

  • STOP_CYCLE_COUNT(T,S) 

 

 

Example from TI: 

 

  • #include <c6x.h> 

  • start_time = _itoll(TSCH, TSCL); 

  • end_time = _itoll(TSCH, TSCL);)  

  • cyclecount= end_time - start_time; 

  • or directly with Code Composer Studio. 

 

 

ARM Compiler, DS-5 on eclipse or an other tools allow that? 

 

Thank a lot, 

 

Remy
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4 Replies
Altera_Forum
Honored Contributor I
35 Views

Hi , 

 

for software you can also write to rocketboard mailing list.  

 

http://lists.rocketboards.org/mailman/listinfo 

http://rocketboards.org/ 

 

Kr, 

 

Florian
Altera_Forum
Honored Contributor I
35 Views

Ok Thx. 

 

I receive an answer from altera: we can use Trace tools with DS-5 Debugger. 

 

They is a tutorial on youtube video: https://www.youtube.com/watch?v=u_xkybphchi 

 

Regards, 

 

Remy
Altera_Forum
Honored Contributor I
35 Views

I use simplest method: run my code 1000*1000(*1000...) times and see moments between writing "beg"/"end" to program console. 

Precision is sufficient to make conclusion: NEON is very weak relative TI DSPs.
Altera_Forum
Honored Contributor I
35 Views

 

--- Quote Start ---  

Ok Thx. 

 

I receive an answer from altera: we can use Trace tools with DS-5 Debugger. 

 

They is a tutorial on youtube video: https://www.youtube.com/watch?v=u_xkybphchi 

 

Regards, 

 

Remy 

--- Quote End ---  

 

 

 

Where were you able to find the time it would take to complete each cycle?
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