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Message boards : Graphics cards (GPUs) : "Energies have become nan"

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Aon
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Message 22801 - Posted: 22 Dec 2011 | 20:04:23 UTC

Hello everyone. Can you help me with this error? It happens only with NATHAN CB1.

<core_client_version>6.12.30</core_client_version>
<![CDATA[
<message>
- exit code 98 (0x62)
</message>
<stderr_txt>
# Using device 1
# There are 2 devices supporting CUDA
# Device 0: "GeForce GTX 460"
# Clock rate: 1.35 GHz
# Total amount of global memory: 1008402432 bytes
# Number of multiprocessors: 7
# Number of cores: 56
# Device 1: "GeForce GTX 460"
# Clock rate: 1.35 GHz
# Total amount of global memory: 1008271360 bytes
# Number of multiprocessors: 7
# Number of cores: 56
SWAN: Using synchronization method 0
MDIO: cannot open file "restart.coor"
ERROR: # Energies have become nan

called boinc_finish

Thanks

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Message 22802 - Posted: 22 Dec 2011 | 22:47:21 UTC - in response to Message 22801.

Not a number, suggests a task error.

I would still upgrade to 6.12.34.
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Message 22820 - Posted: 24 Dec 2011 | 20:17:50 UTC

Hi Aon, reducing memory clock by 10% often fixes those nan errors.

Aon
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Message 22826 - Posted: 25 Dec 2011 | 13:55:44 UTC - in response to Message 22820.

Thanks Stoneageman. If I reduce memory clock tasks would take longer to complete, wouldn't they? I wouldn't want to do that as I barely qualify for the 24h bonus with the Gianni's. I upgraded my boinc version like skgiven suggested (not sure it was a good idea though to go all the way to boinc 7. We'll see how it goes.) and the graphic card drivers. Now I am waiting to see how things work out with the upgrades. My first impression is that the system is slower but I will wait until several wu's are completed to draw the conclusions.

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Message 22831 - Posted: 25 Dec 2011 | 22:35:38 UTC - in response to Message 22826.

The tasks will run slower, but it will be less than 10%.
I suggest you to increase your GPUs' fans speed, and/or install extra coolers, if you can. Reducing the GPU's temperature improves their stability, and longevity.

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Message boards : Graphics cards (GPUs) : "Energies have become nan"

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