Any up-date? Can I change back to long runs? My computers run without supervision over the week-end, so I do not like to pile up errors.

While you may still get a bad task here or there, I would venture to say the number of current bad tasks has sharply dwindled.

I have had 5 NOELIA fails since 3rd of September. The last unit was sent to my workstation 7 Sep 2014 12:59:07 UTC.

* tpamx3835-NOELIA_tpam2-1-2-RND0880_1
* 668-NOELIA_TRP188-0-1-RND1496_3
* tpamx2552-NOELIA_tpam2-1-2-RND0011_0
* tpamx4367-NOELIA_tpam2-0-2-RND6555_0
* tpamx3206-NOELIA_tpam2-0-2-RND6114_0

Most of them run a long time before the error shows.

Those which run for a long time before the error shows (the NOELIA_tpam2 workunits) are failing because they got a lot of "The simulation has become unstable. Terminating to avoid lock-up" messages before they actually fail. This kind of error is usually caused by:
- too high GPU frequency
- too high GDDR5 frequency
- too high GPU temperature
- too low GPU voltage
The bad batch this thread is about consists of NOELIA_TRP188 workunits, which usually fail right after the start.

Those which run for a long time before the error shows (the NOELIA_tpam2 workunits) are failing because they got a lot of "The simulation has become unstable. Terminating to avoid lock-up" messages before they actually fail. This kind of error is usually caused by:
- too high GPU frequency
- too high GDDR5 frequency
- too high GPU temperature
- too low GPU voltage
The bad batch this thread is about consists of NOELIA_TRP188 workunits, which usually fail right after the start.

I disagree either of the 4 points being the issue.

My Nvidia Quadro K4000 GPU is completely stock with absolutely no modifications or overclocking applied. So the frequencies are right. Also the case of my hostDell Precision T7610 is completely unmodified and the case fans are regulated automatically as always. The GPU run at 75 degree C which is well on the safe side. Further, I haven't performed a driver update for months.

May I add that I haven't noticed any failed WU's on my system until now. Within 5 days 5 NOELIA WU's failed.

Those which run for a long time before the error shows (the NOELIA_tpam2 workunits) are failing because they got a lot of "The simulation has become unstable. Terminating to avoid lock-up" messages before they actually fail. This kind of error is usually caused by:
- too high GPU frequency
- too high GDDR5 frequency
- too high GPU temperature
- too low GPU voltage
The bad batch this thread is about consists of NOELIA_TRP188 workunits, which usually fail right after the start.

I disagree either of the 4 points being the issue.

Of course there are more possibilities, but these 4 points are the most frequent ones, also these could be checked easily by tuning the card with software tools (like MSI Afterburner). Furthermore these errors could be caused by a faulty (or inadequate) power supply, and the aging of the components (especially the GPU). These are much harder to fix, but you can still have a stable system with these components if you reduce the GPU/GDDR5 frequency. It's better to have a 10% slower system than a system producing (more and more frequent) random errors.

My Nvidia Quadro K4000 GPU is completely stock with absolutely no modifications or overclocking applied. So the frequencies are right.

The statement in the second sentence is not in consequence of the first sentence. The frequencies (for the given system) are right when there are no errors. The GPUGrid client pushes the card very hard, like the infamous FurMark GPU test, so we had a lot of surprises over the years (regarding stock frequencies).

Also the case of my host Dell Precision T7610 is completely unmodified and the case fans are regulated automatically as always. The GPU run at 75 degree C which is well on the safe side. Further, I haven't performed a driver update for months.

It is really strange, that a card could have errors even below 80°C. I have two GTX 780Ti's in the same system, one of them is an NVidia standard design, the other is an OC model (BTW both of them Gigabyte). I had errors with the OC model right from the start while its temperature was under 70°C (only with GPUGrid, no other testing tools showed any errors), but reducing its GDDR5 frequency from 3500MHz to 2700MHz (!) solved my problem. After a BIOS update this card is running error free at 2900MHz, but it's still way below the factory setting.

May I add that I haven't noticed any failed WU's on my system until now. Within 5 days 5 NOELIA WU's failed.

If you check the logs of your successful tasks, those also have this "The simulation has become unstable. Terminating to avoid lock-up" messages, so you were lucky that those workunits were successful. If you check my (similar NOELIA) workunits, none of them has these messages.
So, give it a try to reduce the GPU frequency (its harder to reduce the GDDR5 frequency, as you have to flash the GPU's BIOS).

The direct crashes should be fixed now.

The Noelia's doing okay on my systems after last week hick up but now the latest Santi's, (final) have this error: ERROR: file mdioload.cpp line 81: Unable to read bincoordfile.
I see errors with wing(wo)man too. In run with Win7.

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Greetings from TJ