Patrick,
"c-ray 1.1 is a popular and simple ray-tracing benchmark for Linux systems ..."
Blimey, wasn't expecting to see that in the benchmark list.
Funny how
c-ray has taken on a life of its own (I didn't know it was being so widely used
until about a year ago). I took it over from John because he didn't have time
for it anymore.
One thing though, can you change the link to the results page please? The
Blinkenlights site is a mirror (I have no control over its persistence) and may
not be around in the future. The primary location is
here, my own domain.
I'm glad you didn't use the simple test, it is indeed really small, and on any
kind of modern hardware it completes way too fast for useful measurement.
It's a pity though that the other tests don't use the settings I've used, since
the results can't be compared, but never mind.
The other tests do impose a degree of main memory access, but not much.
I created them mainly to have something which lasted long enough to be
useful for testing multicore systems. Even then, the slowest test takes just
11s to complete on an old 8-core XEON. Maybe I should start a separate
new table for something like 'sphfract' at 7500x3500 with 8X oversampling...
Btw, c-ray's threading is by scanline, so there's no gain from having more
threads than the no. of lines in an image.
Ian.
PS. Just a thought - any chance you could manually run the C-ray tests
using the settings on my page? I'll add them to the tables. 8) Include the
'simple' test aswell, just for the hell of it.