Re: [Gems-users] opal stats qn

[sudrang@xxxxxxxxxxxx]

Hmmm...Just to make sure i understand this correctly, total number of
cycles is that of the target machine(the one for which i wrote a opal
config) and the approximate cycles per sec is the number of cycles of that
target machine that hte host machine can simulate every sec?

Thanks,
Sudharsan

> Approximate cycle per sec = Total number of cycles / Total Elapsed Time
>
> Approximate cycle per sec is a measure of host performance, not target
> performance.
>
> Regards,
> Dan
>
> sudrang@xxxxxxxxxxxx wrote:
>> Hello,
>> Im confused a bit abt the runtime stats of opal.
>>
>> [0] *** Runtime statistics:
>> [0]   Total number of instructions                        641511246
>> [0]   Total number of cycles                              397438255
>> [0]   number of continue calls                            641511246
>> [0]   Instruction per cycle:                             1.61412
>> [0]   Total Elapsed Time:                                31523 sec 0
>> usec
>> [0]   Total Retirement Time:                             17325 sec
>> 571864
>> usec
>> [0]   Approximate cycle per sec:                         12607.5
>> [0]   Approximate instructions per sec:                  20349.9
>> [0]   This processor's Simics overhead (retire/elapsed):  54.96%
>>
>> The approximate cycle per sec confuses me. Where did this number come
>> from?
>> My configuration file models an alpha 21264 at 466Mhz(This is irrelevant
>> given that we talk in terms of cycles everywhere), my target
>> pc(serengeti)
>> has a frequency of 75 Mhz and my host pc runs at 3Ghz.
>> I just need execution time for the benchmark, the total number of cycles
>> here are for the actual benchmark on the target machine..right(I dont
>> want
>> the work done by the host machine)?
>>
>> Thanks,
>> Sudharsan
>>
>>
>> Thanks,
>> Sudharsan
>>
>>
>>
>>
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>
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