Re: [boost] units: performance testing

From: Matthias Schabel (boost_at_[hidden])
Date: 2007-04-02 16:17:06

>> in fact the whole example is little meaningfull. It can't prove that
>> the library is fast, nor that it is slow.
>
> I agree.  The main thing that the example tests
> is the compiler's ability to play games.  I just
> tried multiplying 1000 * 1000 matrices together
> using msvc 8.0 with /Ox /Ot /Ob2 /Oy The results
> are effectively the same for double and quantity.
>
> ublas:
> double = 16.282 seconds
> quantity = 16.547 seconds
>
> tiled:
> double = 1.875 seconds
> quantity = 1.875 seconds

Steven,

If you send me the test code you used, I'm happy to replace the  
existing (problematic) ad hoc "performance test" example with your  
example...This is certainly more representative of the kinds of  
performance-critical applications where quantities might be found,  
anyway.

Matthias