Need help with setup

[=[PULSAR]=]

I've tried doing this over the past week with no success. I am running 2x GTX 295, 1x 9800GX2 on a single machine with SLI and physx disabled and still can only get gpu 1 to work. Help is appreciated :D

Thanks
-Ryan

[=[PULSAR]=]

bump because gpu cycles are going unused :)

[CaptMorgan]

hopefully some1 will chime in also because I am not positive with what I am saying-but i would just run the 2 295's. I believe it would better to just run those

[Gamekiller]

I didn't post because I figured someone smarter than myself would reply with an answer.

I THINK you'll have to use dummy plugs and extend your monitor.

or maybe turn SLI on but I didn't have any luck like that with my single gtx 295

[OldChap]

When I had my twin card 295 running I had sli on and just 1 connection to monitor (as you would expect)...I wonder if you repeat that for the second 295 and use dummy then extend desktop to it or just sli the 2 295's including the bridge.

When I asked about mixing the reply was it is ok if the compute capacity is the same so maybe the gx2 has to go in another rig

[=[PULSAR]=]

I'll give that a shot shot oldchap but for right now I have communication differed for another 6 hours because I was messing around with it too much.

[123bob]

I'm certainly no expert on multi GPU rigs either, but on the one rig I run two 260-216s, I had to put on the SLI bridge even though I don't have SLI on. The rig would blue screen without it. :shrug:

As was suggested before, perhaps you should work on just getting the 295s running first, then see if you can add the 9800.

Bob

[CaptMorgan]

I wonder why 123bob you had to have the bridge on even though you had SLI off?? But heck as long as it works right:up:
=[PULSAR]= please keep us posted on your progress and keep the questions comin if you are still having trouble- We appreciate the help:up:

[pwolfe]

I for sure have to run with SLI enabled in Linux with a dummy vga on the second output on my dual-pcb 295 to get things working. The dummy vga can be made diy-style on the cheap with parts from radio shack. I'd say its worth a try. Nothing could force that 2nd gpu to initialize on the grid until I had that plug.

[=[PULSAR]=]

55 minutes till I can download more projects to see if this works...

[OldChap]

Just by the way, the second card can be connected to the primary monitor on an alternate (vga) conn if you have it instead of dummy

[Gamekiller]

I for sure have to run with SLI enabled in Linux with a dummy vga on the second output on my dual-pcb 295 to get things working. The dummy vga can be made diy-style on the cheap with parts from radio shack. I'd say its worth a try. Nothing could force that 2nd gpu to initialize on the grid until I had that plug.

I coulda swore you had to have a HDMI dummy for the dual pcb 295.

[=[PULSAR]=]

Well got WCG set up in the mean time and well BOINC is recognizing 4 gpus right now so I guess thats all I can ask for. Lets just see if I actually get 4 WU's for them and not 2 like before. Really wish I could put a 3rd dual card but BOINC will only recognize one core.

[Otis11]

^^ you sure? I'm pretty sure Jackofall had 4 295's in one rig...

[=[PULSAR]=]

Well BOINC recognizes 4 gpus on the messages tab, but will only run 3. At points it runs 4 for a couple seconds and then quits. Also looks like something is throttling the gpus they are only loading at 70-75%???
http://i48.tinypic.com/2yw8y6d.jpg

[PoppaGeek]

Looking though your errors they are not all the same. There are several different ones. Is the GPU overclocked? The CPU has to be 100% stable as well. As far as only 3 of 4 working I do not know but it seems a common problem in the forums. Unfortunately when someone finally gets it to work they do not always post how in the forums.

My GTX 260s run at about 70% and my 8800GT 85%. :shrug:

[=[PULSAR]=]

All the gpus are at stock speeds. What I have noticed is the gpu that is not folding is my display gpu :cool: Wish there was a single motherboard that could house 25+ gpus.

[Otis11]

Yeah, because of how GPU usage is calcuated (different units - shaders, texture units, the core itself) 75% utilization is as high as your card may get. It varies by model and the ratios of different components on each card.

And I'm not sure why your display isn't crunching, but there's gotta be a way to fix that.

Just a side note: a team got 6 295s and a 285 crunching in one box. Not for GPUGrid, but on 64 bit OS you can recognize 13 GPUs (really recognizes 16 parts, but 3 are used for other components.) Just need a beast of a PSU, a board with 7 slots and some PCI-e extension ribbons... Oh, and a ridiculous supply of money. Asus already has a BIOS to support it if you have their P6T supercomputing Mobo.

[=[PULSAR]=]

Well just played some BF2 and it error-ed out all my gpugrid WU's and now over my limit and have to wait another day to crunch WCG is doing fine though just loaded it on my Q6600 also is there a way to monitor instances running on other computers?

[OldChap]

You could try http://www.boinc-wiki.info/BoincView_Installation_and_Set-Up_Guide

[=[PULSAR]=]

You could try http://www.boinc-wiki.info/BoincView_Installation_and_Set-Up_Guide

Looked promising if the boincview site wasn't shutdown.

[PoppaGeek]

This one works. (http://boinc.berkeley.edu/addon_item.php?platform=win&item=boincview.zip)

[OldChap]

I'll just shut up...I forgot about that :(

[Gamekiller]

I have my projects set to pause when I play games.

http://www.xtremesystems.org/forums/showthread.php?t=232091

Not sure how friendly it is with gpugrid.

[=[PULSAR]=]

Thanks for all the help guys! Is nvidia still leading the folding race? I remember during the days of F@H ati was not producing points even close to nvidia.

[Otis11]

Yeah, NVIDIA is the way to go for F@H or GPUGrid... Not sure how they compare over on Milky-way or Collatz though...

[Naja002]

1) In order to get more WUs you can: reboot, restart boinc<--if that doesn't work, then Detach/Re-attach should work. No reason to wait the 24 hrs.



=;4263330']Well BOINC recognizes 4 gpus on the messages tab, but will only run 3. At points it runs 4 for a couple seconds and then quits. Also looks like something is throttling the gpus they are only loading at 70-75%???

2) create a file in notepad and name it: cc_config.xml , then copy and paste the below into it. It goes into your BOINC folder. Not sure what OS you are running, but in Vista/win7 it's inside programdata folder:


- <cc_config>
- <options>
<ncpus>8</ncpus>
<use_all_gpus>2</use_all_gpus>
<report_results_immediately>1</report_results_immediately>
</options>
</cc_config>

report results immediately can stay at 1.
use all gpus can be any number from what I understand.
ncpus is the difficult one: Try totaling up your cpu cores + your gpus and enter that number, then see how many WUs total are runnning, then increase/decrease that number until the total running WUs = cores + gpus.
You will need to completely restart Boinc each time, including shutting down "boinctray.exe" via task manager. Instead you can try the Advanced>Read config file.


3) Check Advanced> Preferences:

http://i50.photobucket.com/albums/f347/Naja002/PC/ScreenShot007-3.jpg

[=[PULSAR]=]

Tried you advice naja even if I detach the project or try anything else I still can get new WU's still having the commo deferred message. Tried setting ncpus to 12 and all it did was enable 12 wu's for the cpu.

[Naja002]

=;4263720']Tried you advice naja even if I detach the project or try anything else I still can get new
WU's still having the commo deferred message.

If you haven't already: Detach, reboot, then re-attach....




Tried setting ncpus to 12 and all it did was enable 12 wu's for the cpu.


Strange, I've never had it behave that way......:shrug: You can try adjusting the use gpus number, but my understanding is
that the number is irrelevant and can be any number....

[=[PULSAR]=]

If you haven't already: Detach, reboot, then re-attach....






Strange, I've never had it behave that way......:shrug: You can try adjusting the use gpus number, but my understanding is
that the number is irrelevant and can be any number....

This machine is about ready to get booted out the window:p:

[Naja002]

Been there....:D

What version of boinc are you running?

[=[PULSAR]=]

6.10.18 I was thinking about trying the beta see if that helps at all.

[Naja002]

It should work. You can try 6.10.29 it works well, but I don't think it's going to fix the issue(s).....

[=[PULSAR]=]

Trying 6.10.35, gpugrid is still making me wait and WCG is currently down. Glad I found 64-bit though I've heard its suppose to have a 10% increase.

[123bob]

Yes, WCG uploads of finished WUs is borked at the time I right this.

Confirm that a 64 bit BOINC on a 64 bit op sys gives about a 10% boost on WCG, for sure.

As to getting your total GPUs running on Grid, IDK, but it looks like your in good hands now. :up:

Bob

[mreuter80]

just some comments on the cc-config file:

do not use the ncpu option. this is for debugging only and will mess with your system. (link) (http://boincfaq.mundayweb.com/index.php?language=1&view=91)
This setting is for CPU usage only and won't have any effect on GPU WUs

<ncpus>
Act as if there were N CPUs: run N tasks at once. This is for debugging, i.e. to simulate 2 CPUs on a machine that has only 1. Don't use it to limit the number of CPUs used by BOINC; use general preferences instead.

For use with CUDA: When you want to do CUDA only, not use the CPUs at all, set <ncpus>0</ncpus>
If you want to use all CPUs, either omit using this option, or set <ncpus>-1</ncpus>

set <use_all_gpus> to 1 - this setting has only 0 or 1 (2 might work, but to be sure I'd use 1)

[Naja002]

On Gpugrid ncpus was needed in the past. Then they did away with it. Then I found a few months later that things were not right. I tried the ncpus = cores + gpus and found that I had 1 too many WUs running. So, I started subtracting 1 (from the total cores + gpus) and it has worked fine across various setups and Vista. Now with Win 7...it's apparently not needed again. Seems to be running as it's supposed to in 6.10.19 and 6.10.29.

At times in the past I have come up short on WUs v cores + gpus....If everything else is in order, like gpus recognized, then I've used ncpus to make the final adjustment...:up:

[=[PULSAR]=]

Okay cpus have been crunching how long do results usually take to post on gpugrid and wcg?

[Otis11]

GPUGrid you should get results either tonight or early tomorrow with full strength in 2-3 days...

WCG, because of validations, will take atleast 5-6 days to reach full strength, but you should see atleast some result in a day or two.

:welcome: and glad you got it working!

[=[PULSAR]=]

Okay well testing out the new beta and well still same issues only folding on 3 gpus:( Oh well I'll let it go for a couple days before I tear it down and start another build.

[CaptMorgan]

:welcome: and Thank you =[PULSAR]=

[Naja002]

=;4264973']Okay well testing out the new beta and well still same issues only folding on 3 gpus:( Oh well I'll let it go for a couple days before I tear it down and start another build.

The 1 not recognized is still your main monitor display? Gpu 0?

Did you check your preferences as above?