I just updated my Phenom quad core XP system to BOINC 6.10.18 and found that the CUDA GPU (Nvidis 9400) was no longer recognised. I then found out that I had to update my GPU drivers, which I have done, and all seemed well. However now every CUDA WU crashes about halfway through, with "Computation error". It usually manifests itself as a hung screen although the CPU is still running and there is HDD I/O. The usual cure is a reboot although I have sometimes managed to jerk it into life with a 3 finger salute. Any ideas please?

Also, how can I get the previous version of BOINC back?

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I just updated my Phenom quad core XP system to BOINC 6.10.18 and found that the CUDA GPU (Nvidis 9400) was no longer recognised. I then found out that I had to update my GPU drivers, which I have done, and all seemed well.

Perhaps you've gone too far with the drivers. See Latest Nvidia 196.21 drivers for more information.

Also, how can I get the previous version of BOINC back?

Try this link.

Gruß,
Gundolf

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Computer sind nicht alles im Leben. (Kleiner Scherz)

SETI@home classic workunits 3,758
SETI@home classic CPU time 66,520 hours

Just so you know, it may not be a problem with your GPU exactly. We seem to be getting a lot of VLAR work units coming through right now. They are very hard on the GPUs and can cause problems like you are describing.

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PROUD MEMBER OF Team Starfire World BOINC

Thanks to all; it turned out to be the SETI screen saver, which became active after upgrading the software. Killed that and all is now well.

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May I suggest you also run an older video driver 19107 or 19038.
The newer driver is not as effective running Cuda app's.

Dave

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I was having a similar problem, Computation error on GPU work units. I turned the seti screen saver off and set up a blank screen saver. I have not had any errors since I did this, about a month ago.

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