Punchy
I have never had a GPU for crunching PrimeGrid before.  What do I need to do to get my 1070 working for this challenge, besides:
1.  Finish current [link=mailto:F@H]F@H[/link] WU and then disable [link=mailto:F@H]F@H[/link] client
2.  Enable GPU crunching for the right project on the PG website
3.  Enable BOINC to use GPU
 
Anything else?  app_config tricks even?

 
If you do not want to use your CPU for this challenge (only GPU):
 On the PrimeGrid website -> PrimeGrid preferences

• Select either ATI or Nvidia for the AP27 project.
• You will have to select CPU for something under "Projects" preferences, it won't let you leave it blank.
• At the top "Primary Preferences" uncheck "use CPU".
• Now you will only download GPU AP27 tasks.

Hope this helps and now everyone knows my name!

http://www.primegrid.com/results.php?userid=273570&offset=0&show_names=0&state=2&appid
Runs with 2 Tasks Per GPU on my GTX 980 Cards @ 1501MHz
2 Tasks: Run time 3,481.89 and Run time CPU 47.36
1 Task: Run time 1,828.16 and Run time CPU 48.47

My 1080 is rocking them out at 2025Mhz in 1050 Seconds or less (18 minutes)
My 970 is doing about 1200Mhz and 2480 Seconds or less (41 minutes) though boinc shows 35
Internal case temp is 40C with the 1080 at 67C and the 970 at 78C

yodap
980ti also does 2 wu faster than 1 by an average of a couple minutes. I was concerned about more heat but it wasn't the case.

 
I won't have time to test my other cards before the contest. Less than six hours now. I may miss the start.
 

For Heat and a Solid 100% GPU and 100-106% Power I will stick with 1 Task Per GPU.
I think that 2 or 3 minutes are not going to make that big of a difference in the end.
 
Remember Team Do Not Download Any Tasks Before the Start Time.

bcavnaugh

yodap
980ti also does 2 wu faster than 1 by an average of a couple minutes. I was concerned about more heat but it wasn't the case.

 
I won't have time to test my other cards before the contest. Less than six hours now. I may miss the start.
 

For Heat and a Solid 100% GPU and 100-106% Power I will stick with 1 Task Per GPU.
I think that 2 or 3 minutes are not going to make that big of a difference in the end.
 
Remember Team Do Not Download Any Tasks Before the Start Time.

I had to start way early as I am working till 4pm today. How does the 2 tasks per gpu work? Does it just shave a few minutes in total off the 2 units combined? I would personally think the overhead of running 2 units at once would decrease the throughput. I could try setting that up this evening if it really helps. Be interesting to see if Pascals better preemption makes a significant difference.

From above:
GTX 980
2 Tasks: Run time 3,481.89 and Run time CPU 47.36
1 Task: Run time 1,828.16 and Run time CPU 48.47
http://www.primegrid.com/results.php?hostid=520911&offset=0&show_names=0&state=4&appid
 
GTX 1080
2 Tasks: Run time 2,126.23 and Run time CPU 64.95
1 Task: Run time 1,136.24 and Run time CPU 52.06
http://www.primegrid.com/results.php?hostid=524550&offset=0&show_names=0&state=4&appid
 
GTX Titan
1 Task: Run time 3,860.26 and Run time CPU 58.34
http://www.primegrid.com/results.php?hostid=433537&offset=0&show_names=0&state=4&appid
Testing now with DP Enabled on one of two cards.
 

HK-Steve
I can not get any GPU tasks.. weird..
 
Have double checked everything...

Did you make sure "use Ati/Nvidia GPU" is selected at the very top of the preferences page? It's one of the more confusing choices, even if you select OpenCL tasks on the project list if it's not selected up top you wants get any.

For Founds found look here: http://www.primegrid.com/ap.php You must be logon to see your Stats.
My Starting Stats:
Found of length 20 | 19
Found of length 21 | 1
Found of length 22 | 2

yodap
Just got home and fired up the gpu's.
So where's the stats????

I saw that as well, they must be on a Coffee Break.

I have one Folding computer with 2x 980ti's sitting doing nothing... just will not get tasks.
All other 10 GPU's are crunching away very happily...
 
Running the latest Client.. like all the other computers.... weird.
Hope I can get it worked out soon....

ipkha
Is that system 64bit? There is no 32 bit app for the AP27.

Yep, You nailed it.... Thanks. Is my only 32bit computer..

Looks like stats are slightly borked. They updated the links, but there is no data there yet.

HK-Steve
Looks like I will change out to my last 64bit computer so I can use them at least..
 
No damage from the leak, looks like it was evaporating as it leaked, will post a photo tomorrow..
 
Cheers

See it even happens to the Best of us.

2nd place... woot!

ipkha
Has anyone tried 3 or 4 per gpu? I'll have to change mine to 2 per gpu later tonight.

Another way to look at it is, if you wait til a unit is at 50% and kick the 2nd one in, in my case I'll be finishing one every 22 minutes instead of every 24 minutes.
 
3-4? I'm not ready to go there yet. Lol.