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#1 Computation errors

Posted: Thu Jan 02, 2014 8:13 pm
by CycloneRanger
Of a sudden, I've begun dumping Collatz results by the bitbucketful due to "computation error". Any one else having that problem, or any idea of what I might do to eliminate this problem?

I'm running BOINC version 7.22.33(x64)

#2 Re: Computation errors

Posted: Fri Jan 03, 2014 3:34 am
by Janos (retired)
BOINC is attempting to read memory that it should not, hence the access violation.
http://boinc.thesonntags.com/collatz/re ... =154987835

This could be down to many things:

Hardware error, bad memory for example
Overheating
registry corruption
driver corruption


In a rough debug order:

Check your temps, clean the dust filters, etc.
Disable any overclock you have on both your CPU and GPUs
Do a hardware reboot (cold reboot)
Run a memory test

Do a reset on the project, check any custom config files
Removing and reinstall BOINC for the current stable build
Remove and replace your GPU drivers
If that all fails, delete Windows and reinstall

#3 Re: Computation errors

Posted: Fri Jan 03, 2014 3:39 am
by Janos (retired)
I often use a Linux Live CD to test things out. If you have one you can quickly rule out hardware troubles.

#4 Re: Computation errors

Posted: Thu Jan 09, 2014 12:13 am
by CycloneRanger
NVIDIA driver error, it appears. Backed out to an older version, no more s

#5 Re: Computation errors

Posted: Thu Jan 09, 2014 7:12 am
by Janos (retired)
:)