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Interesting experiment

D

dwdawg

[H]ard|DCer of the Month - January 2013
Joined
Feb 25, 2001
Messages
810
I have a dual opteron quad core board with 2350 cpus (2Ghz)

Smp alone gets me 8k (approx)/day

I added a GTS450 to the mix.

The smp client dropped 2k and the GPU is at 4k/day.

4k/day is too low for a GTS450. So I tried -smp 7.

Now I get 5k/day on both.

Upped the priority on the GPU (even though it has 1 cpu to itself).

GPU now gets 5.5k and the smp drops to 4.5K


I would expect the addition of the GPU might drop the smp to 6k (approx)/day and I would get 9k+ from the gpu.

This is on Linux. I have no more windows licensees.

Even though this kinda sounds like a bad math problem, does anyone have an explanation for the low return with the gpu added?


I'm considering mucking with the requested cpu percentage to see what that would do (maybe 80% on the smp and 100% on the gpu).
 
sounds like theres some weird overhead issues. the smp client at 8k PPD sounds about right for the clocks. but the gpu clients way off. running smp 7 wont help on a system like that since its running 8 physical cores instead of 4 physical 4 logical. so the drop due to running smp 7 is correct. the gts 450 though should be doing 6-8k PPD at stock clocks probably 9k PPD overclocked. i would check and make sure the gts 450 is even going into 3D clock mode.
 
sirmonkey1985 said:
sounds like theres some weird overhead issues. the smp client at 8k PPD sounds about right for the clocks. but the gpu clients way off. running smp 7 wont help on a system like that since its running 8 physical cores instead of 4 physical 4 logical. so the drop due to running smp 7 is correct. the gts 450 though should be doing 6-8k PPD at stock clocks probably 9k PPD overclocked. i would check and make sure the gts 450 is even going into 3D clock mode.
Click to expand...

Interesting thought. Here is the kicker, I have an X6 that gets 15k/day by itself. I have another GTS450 that I added to this rig. This rig now gets 6K on the smp and 9K on the gpu.
Any way I try to rebalance, I wind up with approx 15K for the whole rig.

I'm going to shut down the smp client on rig 1 and see if that gpu comes up to 9k or so.

Edit: Yep, she came right up to ~8k/day. Anyone know where I can get Windows XP professional or above cheap?
 
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well theres 2 reason's for the x6 getting 15k PPD, while even though they run the same architecture, the x6's is more refined, also has better IMC performance, and has much higher clocks. the 2350's are the same as the phenom I's and well we all know how those performed compared to the phenom II's. so your numbers are correct on the smp client when not running the gpu's. the problem is the gpu numbers are all wrong. which means something isn't being clocked correctly or theres something effecting the performance. since i dont use linux anymore i have no idea what the normal numbers would be running the gpu's within linux. so some one else will have to chime in about that.
 
dwdawg said:
Anyone know where I can get Windows XP professional or above cheap?
Click to expand...
Try FS/T, or post a WTB thread in the DC FS/T subforum. I'm sure someone out there has an old Windows license they'd be willing to let go for cheap or even free in order to get another box up and running at its full potential.
 
dwdawg said:
Anyone know where I can get Windows XP professional or above cheap?
Click to expand...

64 or 32 Bit....

I've got an extra Vista Ultimate x64 kicking around somewhere, and no real use for it (as I have a spare 7 x64 license as well)
 
Won't it need to be a server OS? Dual cpus.

If you know a student, you can try dreamspeak.com
 
Patonb said:
Won't it need to be a server OS? Dual cpus.

If you know a student, you can try dreamspeak.com
Click to expand...

The Professional versions will allow 2 physical cpu's.

jfb9301 : I sent a PM. Thanks for your help.

I'll also look up dreamspeak, never heard of it before. Thanks.
 
I seem to have stumbled on the answer.

I set the nice value on the gpu clients to 0.

The quad core setup is now pulling 8.6K on the gpu and 4.5k on the smp.

The X6 setup is pulling 9.6K on the gpu and 10.5K on the smp.

I'm going to do a little more tweaking. But I think I can live with this for now.

The only explanation I can come up with is that wine somehow screws up the idle/low setting on the gpu client.
 
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