[Radiance-general] Intel P4 versus AMD 64 bit processor

[Francesco Anselmo]

Hi Mark,

Today with this processor:

model name      : Intel(R) Pentium(R) 4 CPU 3.00GHz
cpu MHz         : 2992.578

512 Mb of RAM, linux 2.4.26 patched with openmosix and
compiling radiance with gcc 3.3.4 and these compile options

-Dlinux -DMC -D_FILE_OFFSET_BITS=64 -L/usr/X11R6/lib -I/usr/include/X11
-DNOSTEREO -march=pentium4 -malign-double -mno-ieee-fp -mfpmath=sse -O3
-ffast-math -fomit-frame-pointer -fstrict-aliasing -ftracer

I got this:

 14.54 for oconv
222.13 for rpict 
  0.29 for pfilt

Using openmosix with my 2 node cluster 
(
the second machine has a different processor:
model name      : Intel(R) Pentium(R) 4 CPU 2.26GHz
cpu MHz         : 2254.028
)

and rpiece with a 4x4 grid subdivision I got:

156.92 for rpict

I could do a better time with a symmetric system, but
the AMD Opteron seems to rule ...

--
Francesco

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