In article <37235c9d.0@news.povray.org> , "Thorsten Froehlich" 
<fro### [at] charliecnsiitedu> wrote:

> In article <37234e00.0@news.povray.org> , "Thorsten Froehlich"
> <fro### [at] charliecnsiitedu> wrote:
>
> Please ignore these numbers, they do ***not*** represent results with the
> same settings (for some reason AA wasn't on...).  Sorry!

And here are the corrected numbers:

Test 1:
Time For Trace:    0 hours  0 minutes   5.0 seconds (5 seconds)
    Total Time:    0 hours  0 minutes   5.0 seconds (5 seconds)

Test 2:
Time For Parse:    0 hours  0 minutes   2.0 seconds (2 seconds)
Time For Trace:    0 hours  1 minutes   5.0 seconds (65 seconds)
    Total Time:    0 hours  1 minutes   7.0 seconds (67 seconds)

Test 3:
Time For Trace:    0 hours  0 minutes  22.0 seconds (22 seconds)
    Total Time:    0 hours  0 minutes  22.0 seconds (22 seconds)

Test 4:
Time For Trace:    0 hours  5 minutes  42.0 seconds (342 seconds)
    Total Time:    0 hours  5 minutes  42.0 seconds (342 seconds)

Test 5:
Time For Trace:    0 hours  0 minutes  20.0 seconds (20 seconds)
    Total Time:    0 hours  0 minutes  20.0 seconds (20 seconds)

Test 6:
Time For Trace:    0 hours 10 minutes  16.0 seconds (616 seconds)
    Total Time:    0 hours 10 minutes  16.0 seconds (616 seconds)

Test 7:
Time For Trace:    0 hours  0 minutes  41.0 seconds (41 seconds)
    Total Time:    0 hours  0 minutes  41.0 seconds (41 seconds)


One note on test 5 and 6: Mac compilers can optimise the lathe code much
better and are therefore much faster than PCs.

One major reason why (even when very few memory allocations occure) the Mac
version is slower is the way POV-Ray represents colors, vectors and almost
all basic types: arrays.  The compilers do _not_ manage to use the 32
floating-point registers, instead they nearly always generate load/store
instructions so all the RISC benefits are gone :-(


    Thorsten


____________________________________________________
Thorsten Froehlich, Duisburg, Germany
e-mail: Tho### [at] csicom

Visit POV-Ray on the web: http://mac.povray.org

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