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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You will be assimilated...bunghole!

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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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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You will be assimilated...bunghole!

I have the same problem. Is there an opt out option? A way to turn off CUDA?

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Yes in your computing preferences there is a toggle for "Use GPU".

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You will be assimilated...bunghole!

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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Same issue, under vista HP though.

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i have to paus cuda prosessing when i wanna watch a movie, or else it laggs insanly...

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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.

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Do you Good Search for Seti@Home? http://www.goodsearch.com/?charityid=888957
Or Good Shop? http://www.goodshop.com/?charityid=888957

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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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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You will be assimilated...bunghole!

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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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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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.

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Bambi

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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You will be assimilated...bunghole!

just a warning: with new drivers kick VLAR manual or this will happen

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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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You will be assimilated...bunghole!

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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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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You will be assimilated...bunghole!

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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