Too many invalid results


log in

Advanced search

Message boards : Number crunching : Too many invalid results

Author Message
S@NL - John van GorselProject donor
Volunteer tester
Avatar
Send message
Joined: 5 Jul 99
Posts: 190
Credit: 137,855,478
RAC: 5,216
Netherlands
Message 1296482 - Posted: 18 Oct 2012, 7:19:49 UTC

I have some issues with this host. Basic hardware of this pc (I7 990X/GTX580) has not changed since July 2011.
On September 27 I noticed that this host produced around 20 invalid results per day. Before that, it produced 2 or 3 invalids per week. The only change to that pc around that time was that it ran Einstein and MilkyWay tasks as well because of a lack of Seti work. No issues with Einstein and MilkyWay tasks.
Temperature of the card was constant at 60°C (MSI Afterburner), fan is on Auto. When a GPUGrid task ended with an error on September 30, I upgraded the nVidia driver from 301.41 to 306.23. Driver 301.41 was running since the end of May this year, the x41g was installed in March this year. A week ago, I cleaned and reseated the card but the problems still occur.

I now noticed that Pending Validation and Pending Validation Incluclusive are seperately mentioned on my account page so it it somewhat easier to compare hosts. This host shows almost 40% of the total tasks are inconclusive where my other hosts are between 5 and 13%.

Suggestions on what else I should check or change are welcome.
____________


Seti@Netherlands website

Profile MikeProject donor
Volunteer tester
Avatar
Send message
Joined: 17 Feb 01
Posts: 25197
Credit: 34,811,729
RAC: 21,398
Germany
Message 1296492 - Posted: 18 Oct 2012, 9:42:01 UTC

Your card always find more spikes than your wingmen.

Maybe cleaning the fan and/or reseat the cards might help.

____________

Profile Bill GProject donor
Avatar
Send message
Joined: 1 Jun 01
Posts: 349
Credit: 44,414,940
RAC: 24,779
United States
Message 1296503 - Posted: 18 Oct 2012, 12:14:59 UTC - in response to Message 1296492.
Last modified: 18 Oct 2012, 12:19:30 UTC

I am seeing the same thing here, on both my main crunchers. Many of the invalids have more than 3 responses on them already. That would seem to indicate that the calculations are changing. And they are coming from both CPU and GPU processed tasks.
(I was thinking about starting a thread on this but here it is already)

Sorry, this is about invalids, not inconclusive results, ignore this post in this thread.
____________

S@NL - John van GorselProject donor
Volunteer tester
Avatar
Send message
Joined: 5 Jul 99
Posts: 190
Credit: 137,855,478
RAC: 5,216
Netherlands
Message 1296633 - Posted: 18 Oct 2012, 17:53:10 UTC - in response to Message 1296492.

Your card always find more spikes than your wingmen.

Maybe cleaning the fan and/or reseat the cards might help.


I noticed that. As mentioned, I cleaned and reseated the card a week ago but the problem is still there. Also, there was hardly any dust on the card (the case has inlet filters)

Profile Colin
Send message
Joined: 21 Feb 10
Posts: 12
Credit: 1,493,271
RAC: 0
United States
Message 1296716 - Posted: 18 Oct 2012, 21:48:07 UTC

I have a simliar GPU problem. Both my machine and the card are new. Out of over 1900 tasks, 987 are Validation Inconclusive and only 42 are Valid. I have no idea what to do about this. If I could turn off GPU usage I could just let 4 processors run tasks.

Since I received a notice about overloading the servers, I will discontinue the particiaption of this machine until I hear something.

Otherwise the GPU works fine, operating two screens flawlessly.

Colin
____________

Sten-Arne
Volunteer tester
Send message
Joined: 1 Nov 08
Posts: 3768
Credit: 21,492,637
RAC: 15,445
Sweden
Message 1296723 - Posted: 18 Oct 2012, 21:58:11 UTC - in response to Message 1296716.
Last modified: 18 Oct 2012, 22:02:22 UTC

I have a simliar GPU problem. Both my machine and the card are new. Out of over 1900 tasks, 987 are Validation Inconclusive and only 42 are Valid. I have no idea what to do about this. If I could turn off GPU usage I could just let 4 processors run tasks.

Since I received a notice about overloading the servers, I will discontinue the particiaption of this machine until I hear something.

Otherwise the GPU works fine, operating two screens flawlessly.

Colin


Just turn off GPU work. Your account/SETI@home preferences. Choose the venue for the computer in question, and turn "Use NVIDIA GPU" (or ATI if you have such a card) to NO (untick).

Your computer will stop requesting new GPU work, but if you still have GPU work in your cache, it will still run those you already have.
____________

Profile Wiggo
Avatar
Send message
Joined: 24 Jan 00
Posts: 8601
Credit: 99,367,637
RAC: 54,796
Australia
Message 1296731 - Posted: 18 Oct 2012, 22:36:46 UTC - in response to Message 1296716.

I have a simliar GPU problem. Both my machine and the card are new. Out of over 1900 tasks, 987 are Validation Inconclusive and only 42 are Valid. I have no idea what to do about this. If I could turn off GPU usage I could just let 4 processors run tasks.

Since I received a notice about overloading the servers, I will discontinue the particiaption of this machine until I hear something.

Otherwise the GPU works fine, operating two screens flawlessly.

Colin

No need to be so drastic, you just need to find out why your GTX560Ti is throwing those invalid results.

It could be anyone of a few reasons for it like the driver, heat, video voltage or the PSU isn't quite up to the job but with the right details like PSU ratings, load running temps and what voltage GPU-Z reports under load so a solution can be found.

As for the driver I've heard of problems with that early driver version that you are using, I use 285.62 with mine.

Cheers.
____________

Profile Fred J. Verster
Volunteer tester
Avatar
Send message
Joined: 21 Apr 04
Posts: 3252
Credit: 31,903,520
RAC: 119
Netherlands
Message 1296749 - Posted: 18 Oct 2012, 23:13:10 UTC - in response to Message 1296731.

I have a simliar GPU problem. Both my machine and the card are new. Out of over 1900 tasks, 987 are Validation Inconclusive and only 42 are Valid. I have no idea what to do about this. If I could turn off GPU usage I could just let 4 processors run tasks.

Since I received a notice about overloading the servers, I will discontinue the particiaption of this machine until I hear something.

Otherwise the GPU works fine, operating two screens flawlessly.

Colin

No need to be so drastic, you just need to find out why your GTX560Ti is throwing those invalid results.

It could be anyone of a few reasons for it like the driver, heat, video voltage or the PSU isn't quite up to the job but with the right details like PSU ratings, load running temps and what voltage GPU-Z reports under load so a solution can be found.

As for the driver I've heard of problems with that early driver version that you are using, I use 285.62 with mine.

Cheers.



I've noticed this too, although not every task has different signals found,
unlike this
WU.
And this one,
19 and 20
Pulses.


Similar
amount of signals.

Also similar
outcome?


So far: Validation inconclusive (22) · Valid (119) · Invalid (0) · Error (0)
.
And this was only my ATI host, CPU=i7-2600; GPUs: 2x HD5870; PSU 1000Watt.
No problems with overheating CPUs and/or GPUs, no PSU troubles
nor dust as I cleaned all 4 GPUs. [GTX470; GTX480; 2x HD5870GPUs]?!

That's almost 20% Inconclusive, even 1% is too many!



____________

Grant (SSSF)
Send message
Joined: 19 Aug 99
Posts: 5953
Credit: 62,459,422
RAC: 39,723
Australia
Message 1296793 - Posted: 19 Oct 2012, 4:22:54 UTC - in response to Message 1296731.

As for the driver I've heard of problems with that early driver version that you are using, I use 285.62 with mine.

275.33 works for me.
GTX 560Ti factory overclock. No problems (although it does run very hot).

____________
Grant
Darwin NT.

S@NL - John van GorselProject donor
Volunteer tester
Avatar
Send message
Joined: 5 Jul 99
Posts: 190
Credit: 137,855,478
RAC: 5,216
Netherlands
Message 1306146 - Posted: 14 Nov 2012, 18:11:06 UTC

In the mean time I tried manual fan settings to rule out cooling issues. I set the fan to 75% which lowered the GPU temperature from the original 61°C to around 57°C.
Unfortunately this didn't help at all. Still seeing way too many invalid results. I now changed the power supply to a slightly bigger but supposedly more stable version (less ripple)

The "old" power supply is a CoolerMaster 800W Silent Pro Gold, the new one a Seasonic 860W Platinum. The CoolerMaster is not a bad PSU according to some reviews but the ripple/noise on the power signal is high compared to the Seasonic. Since all of the invalid tasks on this pc show more spikes then the valid tasks, maybe the power supply is the culprit.

____________


Seti@Netherlands website

S@NL - John van GorselProject donor
Volunteer tester
Avatar
Send message
Joined: 5 Jul 99
Posts: 190
Credit: 137,855,478
RAC: 5,216
Netherlands
Message 1306156 - Posted: 14 Nov 2012, 18:31:03 UTC

One addition: this same pc ran a few dozen tasks on Seti Beta with similar results. It runs "stock beta", so one task at a time using the x41z application.

S@NL - John van GorselProject donor
Volunteer tester
Avatar
Send message
Joined: 5 Jul 99
Posts: 190
Credit: 137,855,478
RAC: 5,216
Netherlands
Message 1317533 - Posted: 20 Dec 2012, 10:35:01 UTC

The GTX580 used in this host is a factory overclocked MSI card. Increasing the fan speed did reduce the GPU temperature to values below 60°C which should be fine but the validation errors remained.

The card is running at stock speeds for a month now and I haven't seen a single validation error.

Since the GPU temperature was rather low, the memory temperature may have been too high. Next I will check the condition of the cooling paste and replace it if necessary.

Message boards : Number crunching : Too many invalid results

Copyright © 2014 University of California