SuperPi...

[bob4432]

just out of curiosity, what does super use? is it more cpu or ram? the reason i am asking is becase both my 1.7GHz P4 and 2.8c P4 have nearly the same times to get to 1M....is it a smt/smp app?

baffled....

 

[hmmzzz]

I would think for the most part brute clock speed ... Guess not then after seeing your results ...

 

[coomar]

its clockspeed to a certain point, 32m is used to test changes in bandwith changes (you can use the lower ones but its easiest to see on 32m)

 

[bob4432]

Originally posted by: hmmzzz
I would think for the most part brute clock speed ... Guess not then after seeing your results ...

could you run it to 1M and see what you get?

 

[bob4432]

SuperPi appears to not be smt/smp aware as it shows my cpu usage at 50%, so i guess it is seeing 2x1.4...next time i reboot i will turn off ht and see if that helps.

 

[bob4432]

Originally posted by: bob4432
SuperPi appears to not be smt/smp aware as it shows my cpu usage at 50%, so i guess it is seeing 2x1.4...next time i reboot i will turn off ht and see if that helps.

i have to quote myself, i turned off ht and the time is ~3 seconds more...can somebody explain how a 1.7GHz P4 can beat a 2.8GHz P4 (either in ht or non ht mode)? is it just to 1M that this will happen? i would bench but i am currently running my 1.7GHz through a long period of prime95 since it is a new build from parts i had laying around the house.

 

[Bona Fide]

Well 1M is a [relatively] low value, so changes won't be as apparent. Try 32M and you should see significant differences.

 

[imported_burningrave101]

SuperPI is not currently multithreaded. You have to run two instances of it to get 100% load on multi processor/dual core/HyperThreading enabled systems.

 

[bob4432]

i did 16M and the 2.8 finished in ~20min and the 1.7 finished in ~38mins, so there was a significant difference with the higher value

 

[imported_burningrave101]

I just finished 16M in ~13min.

 

[bob4432]

Originally posted by: burningrave101
I just finished 16M in ~13min.

damn, quick, nice rig