[Cs-dev] oscili or poscil
| Date | 2012-01-21 18:49 |
| From | john ffitch |
| Subject | [Cs-dev] oscili or poscil |
Victor says
> In fact floating-point maths is faster than integer maths in my computer:
> 1000s of oscili -> Elapsed time at end of performance: real: 0.912s, CPU: 0.910s
> 1000s of poscil -> Elapsed time at end of performance: real: 0.759s, CPU: 0.757s
I am skeptical after i ran some experiments. I agree with oscili
being slower that poscil IN ONE CASE. I have a mixture of computers
here, so tried a couple, both latest git system compiled as doubles,
linux. The 64bit is a dualcore 1.8Gz, 32bit older 1.4GHz single core
64bit 32bit
oscili 2.74 3.73
poscil 2.53 5.67
oscil3 3.18 4.71
posil3 3.56 6.85
So p family wins 1 out of 4
==John ffitch
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| Date | 2012-01-21 19:10 |
| From | Victor Lazzarini |
| Subject | Re: [Cs-dev] oscili or poscil |
Well on OSX it wins 3 out of 4.
64bit 32bit
oscili 0.859 1.157
poscil 0.722 0.991
oscil3 1.210 1.451
poscil3 1.146 1.500
On 21 Jan 2012, at 18:49, john ffitch wrote:
> Victor says
>> In fact floating-point maths is faster than integer maths in my computer:
>> 1000s of oscili -> Elapsed time at end of performance: real: 0.912s, CPU: 0.910s
>> 1000s of poscil -> Elapsed time at end of performance: real: 0.759s, CPU: 0.757s
>
> I am skeptical after i ran some experiments. I agree with oscili
> being slower that poscil IN ONE CASE. I have a mixture of computers
> here, so tried a couple, both latest git system compiled as doubles,
> linux. The 64bit is a dualcore 1.8Gz, 32bit older 1.4GHz single core
>
> 64bit 32bit
> oscili 2.74 3.73
> poscil 2.53 5.67
> oscil3 3.18 4.71
> posil3 3.56 6.85
>
> So p family wins 1 out of 4
>
> ==John ffitch
>
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> is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3,
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Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie
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| Date | 2012-01-22 08:10 |
| From | Tito Latini |
| Subject | Re: [Cs-dev] oscili or poscil |
| Attachments | None |
| Date | 2012-01-22 10:07 |
| From | Victor Lazzarini |
| Subject | Re: [Cs-dev] oscili or poscil |
what is the * _rep.csd? On 22 Jan 2012, at 08:10, Tito Latini wrote: > Here is my test > > gnu/linux x86_64 2.6.33.7.2-rt30 AMD Phenom(tm) II X6 > > ls -1 > oscil3_.csd > oscil3_rep.csd > oscili_.csd > oscili_rep.csd > poscil3_.csd > poscil3_rep.csd > poscil_.csd > poscil_rep.csd > > where a csd file is > > |
| Date | 2012-01-22 10:37 |
| From | Tito Latini |
| Subject | Re: [Cs-dev] oscili or poscil |
| Attachments | None |