Execution Time of Whetstone on LEON3

[Joel Sherrill]

On Thu, May 4, 2017 at 12:34 AM, Sebastian Huber <
sebastian.huber at embedded-brains.de> wrote:

> On 03/05/17 22:52, Joel Sherrill wrote:
>
>> Has anyone run the whetstone benchmark on real leon3 HW?
>> I'm almost at 20 minutes of simulated CPU time on tsim so
>> am suspicious something is wrong.
>>
>> Any ideas?
>>
>
> Maybe soft-float plus a low CPU frequency? Do you have a function
> profiling histogram of the execution?
>
>
It is the default leon3 build and the leon3 is simulated at 50Mhz.  I have
never used profiling on tsim. Any guidance?

The test  did finally finish and here is the output of tsim's perf command:

*** END OF TEST WHETSTONE ***

Program exited normally.
tsim> perf


 Cycles       : 74462444473
 Instructions : 45632185502
 Overall CPI  :      1.63

 CPU performance (50.0 MHz)  : 30.64 MOPS (30.64 MIPS,  0.00 MFLOPS)
 Cache hit rate              : 98.0 % (inst: 97.9, data:99.7)
 AHB bandwidth utilisation   : 34.8 % (inst: 14.1, data: 20.8)
 Simulated time              : 1489.25 s
 Processor utilisation       : 100.00 %
 Real-time performance       : 122.02 %
 Simulator performance       :  37.39 MIPS
 Used time (sys + user)      : 1220.46 s

So it just took a LONG time.

--joel



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