Pegasos & AmigaOne benchmarks.

[JoannaK]

strobe wrote:
More useful benchmarks like lmbench and x11perf would be useful.

As the discussion on ann.lu points out this is very preliminary and some more volunteers could help shed some light on the differences.

I still don't know why, for example, the faster G4 is slower at FPU fourier than the slower G3.

That G4 /G3 difference may be beacuse people may have used different set of link libraries while building up those binaries.

It's not stated on page but I think that those Pegasos numbers are from April-1 machine.. April-2 was supposed to make some diference, but I can't be sure.
 

[JoannaK]

Pecosbil wrote:
Those test (all AmigaOnes and Pegaos) were done with exactly the same executable. Yes, the Pegasos used on those test is a April-1 one...

Ok.  Didn't see that mentioned on Saku foorum, it's good to know.

IIRC many of those old bytemarks are so smal tests they fit into L1 cache of C3 CPU... only couple of them were affected at all of absense of L2 cache as shown on those first numbers from Gunne.

One that would show performance diffies might be real life size tests. Like doing batch of 50 2megapixel 1600*1200 sized digital images and make some basic effects (smooth?) to them and  store back to disk (in png?). Main idea is that even if software itself would it to CPU caches the data definitely would not. Jpeg would be about 500k but it expanded to 32-bit image for manipulation takes bit over 7 megabytes or Ram each.

That imagesize  is nothing biggie these days (actually 5 megapixel is more top of line and batch conversions (scaling etc) are everyday items with anyone taking pictures and using them.

I think this kind of test could be made quite simply with standard Unix tools (PPM etc..) and some shellscripting?

[JoannaK]

Alkemyst wrote:

Alot of ppl dont read ANN.

So, give them a Link to follow.  Copying a single post (or part of it) out of context is not alays best opinion as it can cause misunderstandings and unnecessary flamewars.

And what about those who can't understand what they are reading? In these times those seem to be the biggest problem around  :-P