On 05/04/2017 04:00 PM, Joel Sherrill wrote:
On Thu, May 4, 2017 at 12:34 AM, Sebastian Huber
<sebastian.hu...@embedded-brains.de
<mailto:sebastian.hu...@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
Note that TSIM reports 0.0 MFLOPS. This means that soft-float was used
to compile the benchmark. Using hard-float should give about 100x
speed-up ...
Jiri.
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