HCC GPU Launched.

[OldChap]

Update: still checking info.... If you are listed please help me out and post rig info

[bluestang]

Thanks for the chart OC!

Maybe add core/mem clocks as well???

[[Ion]]

OC, here's some data for you:
GTX470 @ 740MHz Core: 3 minutes 10 seconds on a Core i7-2700k @ 4.4GHz
GTX460 @ 846MHz Core: 6 minutes 5 seconds on a Core i7-860 @ 3.4GHz

[jcool]

OC, my GTX 260 is on an Intel Hex (6c/12t) @ 3.6Ghz as I said, it has no CPUID since it's an A0 :P
The Info for the 5870 is here - thanks

[OldChap]

[Ion]: if you have some spare time at the weekend you could provide some great info about the importance of the rig by swapping those over for an hour or two and getting new data.

bluestang: because tables is still disabled on xs the whole exercise is somewhat manual. If we are going to go into that sort of depth then maybe later once we have a clearer picture of the hierarchy of the cards.

I will run this same card in my MVG 3770K rig tomorrow... that will show me a good deal of info and I will post results on rig importance/clock speed a lot easier on that platform.

jcool: got it!

[[Ion]]

[Ion]: if you have some spare time at the weekend you could provide some great info about the importance of the rig by swapping those over for an hour or two and getting new data.

bluestang: because tables is still disabled on xs the whole exercise is somewhat manual. If we are going to go into that sort of depth then maybe later once we have a clearer picture of the hierarchy of the cards.

I will run this same card in my MVG 3770K rig tomorrow... that will show me a good deal of info and I will post results on rig importance/clock speed a lot easier on that platform.

I'll see what I can do, I might have time for some good tests

I also have an i7-920 system that I'm building Tuesday, that will run with a GTX470. I'm going to try it at 3.4GHz and 4GHz and see what the differences are in terms of time/GPU WU on that vs the 3.4GHz i7/GTX460 rig and vs the 4.4GHz i7/GTX470 rig.

[bluestang]

And I should be able to swap my 7870 from a E7500 Dual Core @ 3.8 GHz to a 2600k @ 4.5 GHz this weekend.

I'll also try and do some OCing of the core/mem clocks and chart that as well once its in the better rig.

I'll let you know what improvements all this makes (I suspect pretty good).

[Rob_B]

I'm still seeing lots of differences in the time it takes to finish a WU. I haven't changed anything on this system. But the first 4 hours or so it took up to 5:30 per WU and now the last 2 hours it is down to 4:40-5:00.

[OldChap]

I suspect it may depend on the CPU work units in progress at the time...There are so many variables.

Changed to a pic at top of this page.... easier if everybody can still read it

[Angmaar]

I just put my ATI 6870 on this. It goes quite fast. Each WU takes around 3 minutes.

Maybe i'll bring my desktop back to college for free electricity.

[Rob_B]

I suspect it may depend on the CPU work units in progress at the time...There are so many variables.

It is running 2 WU at a time on the GPU and no CPU WU's (haven't figured out how to do that yet)
Down to 4:10 on the last 10 WU's. I'm not complaining But it will be difficult to see performance differences after changing the CPU and or GPU settings this way.

[0ne.shot]

Can anyone provide the power draw on a 7770 HCC only load? I'd like to see the difference in KWh/WU between that and my 570 on this project.

[Angmaar]

I think we can do some more tweaking to get more WUs in one day. Unlike other projects, knocking off seconds is a huge percentage of overall time.

For example, I saw no noticeable decrease in time increasing core clocks of my 7850 from 900mhz to 950mhz. This most likely has to deal with the fact my GPU usage is pegged at a max of 87%. Inefficiencies in coding or maybe shader use?

However, changing the percentage of CPU usage in boinc to 87% (freeing one thread) decreased my time between 7 and 18 seconds. Yes, you lose one thread for other CPU projects, but you increase the amount of WUs being done by the GPU.

Previous time per WU 2:06, with 87% cpu usage being used it dropped it by an average 10 seconds. A drop in 10 seconds produces and extra 59 WUs. One thread of missing CPU HCC is only about 24WUs on a 4.5ghz 2600k. Losing a CPU thread provides an overall increase in WU completion .

Of course, I only watched this for like 10 minutes. With some daily stats and more tweaking we could maybe drop the overall time of GPU WUs with the right settings.

IIRC changing your desktop graphics theme from Aero to Classic will free up some graphics "horsepower". That should make WUs crunch a bit quicker. I have no real evidence of this in WCG but with F@H I could get a few more PPD by making the switch.

[Mydog]

Need advice here.
Can I run different GPU's like GTX680L and GTX480 in the same rig?
Seem to me they use the same driver or am I way out there

Edit:
Do I really need an SLI bridge when running two GTX460's?

[artemm]

Need advice here.
Can I run different GPU's like 680 and 480 in the same rig?
Seem to me they use the same driver or am I way out there

My instinct is: yes. I will try soon with mixed ATI cards. I expect it to work with a dummy plug installed:
http://www.overclock.net/t/384733/th...ond-dummy-plug

[Mydog]

My instinct is: yes. I will try soon with mixed ATI cards. I expect it to work with a dummy plug installed:
http://www.overclock.net/t/384733/th...ond-dummy-plug

Why do you need a dummy plug?

[shoota]

Same reason bitcoin needed a dummy plug. I just don't know that reason

[artemm]

Why do you need a dummy plug?

Without SLI/crossfire enabled and with no "monitor" connected, the GPU won't be able to crunch. This is an old school trick from F@H people had to do. I don't frequent the WCG forums long enough to see if this has been tried yet, but I suspect we may need to dummy plug the odd GPU out...

Feel free to correct me if I'm wrong here, guys, I've yet to test this myself.

[shoota]

You can also just attach a monitor to each card and then once it's crunching remove the monitors. I did this for bitcoin since i didn't want to mess with a dummy plug.

[Mydog]

You can also just attach a monitor to each card and then once it's crunching remove the monitors. I did this for bitcoin since i didn't want to mess with a dummy plug.

That I'll do, thanks

[artemm]

For what it's worth, I pulled the Crossfire cable on the cards and it's still crunching along fine on all 4 cores. You should be fine mixing and matching cards, mydog.

[Mydog]

For what it's worth, I pulled the Crossfire cable on the cards and it's still crunching along fine on all 4 cores. You should be fine mixing and matching cards, mydog.

That's good news, just got a bag full of different ones

Just installed a HD7970 on one of the 3770K rigs and now trying to get a GTX480 to run on a 3960X rig together with a 680L.

Putting two GTX460's in on an SR-2 rig later, no need for an SLI bridge there if I understand correctly.

[Mydog]

Cant get the 480 to start any ideas fellas?

[slaveondope]

So is HCC going to put XS at the top of the WCG charts?

[artemm]

Cant get the 480 to start any ideas fellas?

Interesting... plug in a monitor or a dummy plug to the 480 and reboot...