The MC packages are also available at
http://smalltalkhub.com/#!/~nice/NiceVMExperiments


2013/9/27 Nicolas Cellier <nicolas.cellier.aka.nice at gmail.com>

> Again, this is a resolved problem, see
> https://code.google.com/p/cog/issues/detail?id=41&can=1&q=float
>
> On my home brewed COG, I have
> Home brewed 4.10.10 interpreter VM -> 1219 1215
> Home brewed COG VM ->  156 157
>
>
> 2013/9/27 Eliot Miranda <eliot.miranda at gmail.com>
>
>> Hi Bob,
>>
>>     thanks for the heads up!  I'll take a look at this ASAP, but
>> ephemerons in the Spur scavenger come first.
>>
>>
>> On Fri, Sep 27, 2013 at 11:12 AM, Bob Arning <arning315 at comcast.net>wrote:
>>
>>>  Following up Herbert's question, I wrote:
>>>
>>> compareTiming: a to: b
>>> "
>>> ---interpreter vm (5.7.4.1) ---------
>>> Float compareTiming: 1 to: 1.0 ==> 719
>>> Float compareTiming: 1.0 to: 1.0 ==> 991
>>> Float compareTiming: 1 to: 1 ==> 312
>>> Float compareTiming: 1.0 to: 1 ==> 686
>>> ---cog vm (2749)---------
>>> *Float compareTiming: 1 to: 1.0  ==> 28162*
>>> Float compareTiming: 1.0 to: 1.0  ==> 148
>>> Float compareTiming: 1 to: 1  ==> 97
>>> Float compareTiming: 1.0 to: 1  ==> 179
>>> "
>>>
>>> ^[1000000 timesRepeat: [
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>>     a < b.
>>> ]] timeToRun
>>>
>>> So, some obvious questions:
>>> - in the interpreter vm, why is comparing two floats slower that an
>>> integer and a float?
>>> - what's up with Cog? Three tests are faster by the expected ratio and
>>> one took a real dive.
>>>
>>> Also, the profiler Herbert used could use some attention to the NewFloat
>>> printing:
>>>
>>> 99.9 (898,069)  Multiline1  doOneStep:
>>>    *77.30000000000001* (694,902)  Multiline1 [HkTestLine]  doTests:
>>>       73.8 (663,438)  HkRunin [HkTestStation]  canStartNextTest:
>>>
>>> Cheers,
>>> Bob
>>>
>>>
>>>
>>>
>>>
>>
>>
>> --
>> best,
>> Eliot
>>
>>
>>
>>
>
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