Firstly make sure the GPU Fan speed is keeping the GPU below 70°C. Sometimes adding a case fan or opening the side panel helps.
Start downclocking by reducing the GDDR5 frequency by 10%
If that fails try 20%.
If need be reduce the GPU clock by 5 or 10%
If these measures fail get software to increase the Voltage, but only by the least amount (typically ~0.025V)

Note that Rosetta tasks were causing issues a while back, and might still be; I think some tasks used up too much RAM, which causes memory caching to disk and numerous related errors.

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Again, thank you for responding!

I use and recommend MSI Afterburner for that purpose.

I installed that...

1. Cleaning the cooling fins of the GPU and the CPU with high pressure air duster (using a vacuum-cleaner at the same time is recommended)
- (also the PSU, as much as you can do it through the rear grille, or the fan)

I do that religiously every three months. Just did it again. Fans are running quieter.

2. If there is any overclock applied to the PCIe bus, cancel it, and set the PCIe bus frequency to its default of 100MHz

I have no idea how to do that so I assume it's at default.

3. GPU memory clock is irrelevant, raising it is just asking for trouble. (set it to factory default)

Did that using Afterburner.

4. You can raise the GPU voltage by 0.025V increments as long as your GPU temp is below 80°C (and gets stable).
5. Lower your GPU core clock by 10MHz decrements, until it gets stable. (note that not every frequency can be set, so the actual GPU frequency can be ~3MHz lower than the value beside the slider)

4. and 5. I shall save for later. I now have a dust-free PC and and a default GPU memory clock. One step at a time...

Thanks again!

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Firstly make sure the GPU Fan speed is keeping the GPU below 70°C. Sometimes adding a case fan or opening the side panel helps.

My GPU temp is a solid 65°C

Start downclocking by reducing the GDDR5 frequency by 10%

I get REALLY confused by the variations in terminology. What is GDDR5 frequency??? Is that core, shader, memory???

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Tomba, GDDR5 is the memory used in the GPU. See this Wikipedia article:

http://en.wikipedia.org/wiki/GDDR5

All well with Noelias this past week. Just getting in under the 24-hour bar.

The latest one forecasts 38 hours to complete!!!

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The latest one forecasts 38 hours to complete!!!

Call off the dogs! After 15 house running, completion is just 5h:40m away.

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Would this explain the size of these WU? (2 step deep means longer timeframe of simulation per WU, right?)

I guess so, but I'm not the person who has comprehensive knowledge about these workunits.

I think it means task generations; so 2 steps would mean completing a batch of tasks and then a second batch, auto-generated from the first batches results.

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