CUDA causing XP to stutter every few minutes

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Profile Borgholio
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Message 847433 - Posted: 31 Dec 2008, 20:12:14 UTC

Since getting CUDA successfully crunching last night, it seems to have had a negative side-effect on my system. Every few minutes the system will stutter as if it's running under an extremely heavy CPU load. The mouse will not track smoothly, and all input commands via the keyboard are delayed. If this keeps up I will try suspending the CUDA client and see what happens, but I was wondering if anybody else noticed something similar?
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Message 847454 - Posted: 31 Dec 2008, 20:53:01 UTC
Last modified: 31 Dec 2008, 20:53:23 UTC

I got the same problems ...

I was asking for that a the GPUgrid forum and got this answere (ill try to translate)

Zu den Lags: Diese liegen leider an Deiner Grafikkarte, die für GPUGRID eher auf der schwächeren Seite liegt. Das CUDA-Programm, das die Berechnung steuert, kann nur nach der Abarbeitung eines Timesteps wieder die Kontrolle an andere Prozesse geben. Bei mir (8800GT) ist das rund alle 70 ms. Bei Dir wird aufgrund der schwächeren Grafikkarte der Timestep länger dauern. Wie lange kannst Du in den Results Deines Accounts anschauen. Je länger aber ein Timestep dauert, desto länger dauert die Rückgabe des Prozesse an Windows. Daher entstehen lags, da der Computer erst verspätet reagiert.


short translation version:
Your grafic card is to weak ;)
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Message 847460 - Posted: 31 Dec 2008, 21:09:47 UTC - in response to Message 847454.  

Ahh wonderful. Yeah I ran that through Babelfish and got something similar, that slower cards have timing issues that prevent them from operating as smoothly as faster cards. Kind of a bummer tbh. I wonder if this is something that can be solved on the BOINC end...
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Message 847477 - Posted: 31 Dec 2008, 21:52:08 UTC

I have the same problem. Is there an opt out option? A way to turn off CUDA?
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Message 847482 - Posted: 31 Dec 2008, 22:00:26 UTC - in response to Message 847477.  

Yes in your computing preferences there is a toggle for "Use GPU".
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Message 847484 - Posted: 31 Dec 2008, 22:06:41 UTC
Last modified: 31 Dec 2008, 22:09:17 UTC

If you set the computing preferences to not use gpu and still have WU's in your cache, BM will finish them but will not download new ones ...
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Message 847797 - Posted: 1 Jan 2009, 16:40:23 UTC - in response to Message 847433.  

Same issue, under vista HP though.
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Message 848747 - Posted: 3 Jan 2009, 17:05:05 UTC

i have to paus cuda prosessing when i wanna watch a movie, or else it laggs insanly...
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Message 848780 - Posted: 3 Jan 2009, 18:27:46 UTC

This has been a long known problem with the slower vid. cards. The drivers/cuda dont release the vid card when its needed for other things.
It is still in the high end cards too just they are much faster so lags are less evident.


Do you Good Search for Seti@Home? http://www.goodsearch.com/?charityid=888957
Or Good Shop? http://www.goodshop.com/?charityid=888957
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Message 848966 - Posted: 3 Jan 2009, 23:16:14 UTC

I too have a slower cuda card, a 8600gt. When I first tried running cuda, it gave a lot of errors but general computer usage was very laggy. It would stop responding for several seconds, left random pixels on the screen and didn't alway repaint the screen properly. This was with the 178.28 drivers. The 180.84 drivers are betas for mine but made my system run much smoother.
So the question is, what drivers are you running?
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Message 848979 - Posted: 3 Jan 2009, 23:40:30 UTC - in response to Message 848966.  

I'm running 178.24 currently. That is the latest version for the 8400gs as of a few days ago. I will be upgrading, of course, when my 9600gt arrives in a week or two.
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Message 848985 - Posted: 4 Jan 2009, 0:06:05 UTC

im running win xp sp3 eng with 180.48 drivers, but when i tested windows 7 the other day i had the same experience, this time with same version driver only for vista, everything flowed smooth (windows smooth) untill boinc came into play, then same strange lag.
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Message 850167 - Posted: 6 Jan 2009, 16:58:43 UTC - in response to Message 848780.  

This has been a long known problem with the slower vid. cards. The drivers/cuda dont release the vid card when its needed for other things.
It is still in the high end cards too just they are much faster so lags are less evident.


i think this is the issue, the more i overclock my card, the less lag i experience.. to bad tho...
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Message 850541 - Posted: 7 Jan 2009, 19:49:36 UTC - in response to Message 850167.  

I have had a few stutters with a BFG 9800GTX 512Mb on a quad core box with 4Gb RAM so it may just be the seti cuda app that need refining. Not running CUDA now since getting lots of snow on my screen (at low temperatures), don't want to risk damaging my card.
Bambi

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Message 851486 - Posted: 10 Jan 2009, 0:52:49 UTC
Last modified: 10 Jan 2009, 0:53:26 UTC

Well just installed my new 9600gt. First impressions are fairly good. Crunching seemed to lock up at 5% on the first workunit. I suspended it and the second workunit so far is crunching without incident. Estimated speed is 1 hour 20 minutes per workunit. I am still seeing the stuttering, but it is less frequent and passes much more quickly than on my 8400gs. My new card idles at 37c and only maxes out at 48c when running CUDA...not bad at all. Next step is to see if it errors out when I launch a 3d game.
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Message 851488 - Posted: 10 Jan 2009, 1:01:28 UTC
Last modified: 10 Jan 2009, 1:03:33 UTC

just a warning: with new drivers kick VLAR manual or this will happen
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Message 851492 - Posted: 10 Jan 2009, 1:16:24 UTC - in response to Message 851488.  

Haven't a clue how to check if a wu is vlar...I may just suspend it until a new version of Seticuda comes out if there are any problems.
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Message 851493 - Posted: 10 Jan 2009, 1:21:01 UTC - in response to Message 851492.  

Haven't a clue how to check if a wu is vlar...I may just suspend it until a new version of Seticuda comes out if there are any problems.

VLAR bat
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Message 851494 - Posted: 10 Jan 2009, 1:26:23 UTC - in response to Message 851493.  
Last modified: 10 Jan 2009, 1:27:31 UTC

Thanks for the link. I created a bat file and it did not list any VLAR workunits...so I think I'm safe for now. If you're interested, here is what I used:

@echo off

echo VLAR Tasks found:

echo.

findstr /M "<true_angle_range>0.00" "C:\Documents and Settings\All Users\Application Data\BOINC\projects\setiathome.berkeley.edu\*.*" > con:

echo.

echo Done.

pause 0
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Message 851499 - Posted: 10 Jan 2009, 1:41:12 UTC

you should modify it to:
findstr /M "<true_angle_range>0.0[0-9]" "C:\Documents and Settings\All Users\Application Data\BOINC\projects\setiathome.berkeley.edu\*.*" > con:

that will show you tasks with range from 0.00x to 0.09x
your version shows only 0.00x

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Questions and Answers : GPU applications : CUDA causing XP to stutter every few minutes


 
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