My new Opteron 165 seems slow

[mazeroth]

When running SuperPi I check my Task Manager - Performance and I can see both CPU charts. The problem is the highest they're going is around 53% when performing Super Pi. Any reason for this?

Thanks!

 

[TrevorRC]

It's only using 1 Core, SPi is not multi-threaded, so it doesn't take full advantage of the multiple cores.

 

[Hard Ball]

Try setting process affinity to a particular core.

 

[mazeroth]

How do I do that?

Thanks!

 

[Megatomic]

Open the task manager, right click on super pi.exe select affinity. Then uncheck one of the boxes.

 

[mazeroth]

I did that and got the same time. Task Manager showed CPU-0 at 100% while CPU-1 was idle. I guess when I ran it without changing it both CPUs did half the work, right? Still, this score seems REALLY low for 1.8ghz. The best I can get is 50 seconds.

Any other recommendations?

Thanks for all of your help!

 

[Hard Ball]

Try to check you RAM timing and bandwidth and timing, to see if they are running SPD.

That is a pretty low score; a 2.0GHz AMD64 chip typically does 40 sec or a little over. But 53 is actually not too far off for a 1.8 GHz chip if you are running a lot of background services and such. SuperPI certainly isn't AMD's strong point; AMD typically does dramatically better in more FP and SIMD dominated benchmarks; but OCed Pentium Ms (to 4.0GHz or so) with exotic cooling typically take the crown with 18-20s in a competition; occassionally you will see an OCed FX57 to 4.0GHz on top of the heap, but that's typically using LN2 cooling.

 

[Tweakin]

That does seem slow, I do 1M @ 33~35 sec on my 3800X2

 

[Crescent13]

yeah that seems slow. Try this. Make 2 copies of the super-pi folder. give each copy it's own name (so they don't have the same name). Open each super-pi program (so you have 2). Press ctrl-alt-delete. Set one super pi to CPU1, set the other to CPU0. start both. See what your score is on each one.

 

[Megatomic]

I can't run 2 super pi tests even when selecting affinity manually. I get some error about not convergent in sqr05...

 

[atybimf]

Just overclock the Opty 😉

Seriously, I think you can set the affinity, can you not?

 

[liebremx]

Originally posted by: Megatomic
I can't run 2 super pi tests even when selecting affinity manually. I get some error about not convergent in sqr05...

SuperPI complains because it keeps/checks some numbers in files created in the directory where it's being run from so when you run two instances from the same dir one of them fails with that msg. Just run each instance from different dirs.

 

[Megatomic]

Originally posted by: liebremx

Originally posted by: Megatomic
I can't run 2 super pi tests even when selecting affinity manually. I get some error about not convergent in sqr05...

SuperPI complains because it keeps/checks some numbers in files created in the directory where it's being run from so when you run two instances from the same dir one of them fails with that msg. Just run each instance from different dirs.

Thanks for the tip. I'll give that a try tomorrow when I get home from work. :beer: for you man.

 

[mazeroth]

I made two folders, renamed the one executable, ran them simultaneously, and scored a 54/53. I ran it again and got the same thing.

Under Task Manager - Processes, it shows under CPU both running at 50. Shouldn't it be 100, or does that take into account TOTAL CPU power?

 

[Megatomic]

If each core is showing that it is at 50% (maxed out it's individual CPU usage graph), then the CPU is running 100%.

On a side note, the trick liebremx posted for me worked. Now everything works as expected for me.

 

[TrevorRC]

Originally posted by: Tweakin
That does seem slow, I do 1M @ 33~35 sec on my 3800X2

At 2500 though.

My Venice @ 2800 did it 28ish.

Seems reasonable to me.
I'll run mine tonight @ stock [my X2] and see what I get.

 

[TrevorRC]

Just ran my X2 @ 1.94Ghz..
(For some reason it's defaulting there at stock).
48 seconds.

Looks reasonable to me.

 

[Tweakin]

Originally posted by: TrevorRC

Originally posted by: Tweakin
That does seem slow, I do 1M @ 33~35 sec on my 3800X2

At 2500 though.

My Venice @ 2800 did it 28ish.

Seems reasonable to me.
I'll run mine tonight @ stock [my X2] and see what I get.

Your right...I looked back through the thread and there is no mention of an OC...I must have just taken that for granted with an Opty...