Forum > GPU crunching
Completed, validation inconclusive
efmer (fred):
I got lot of Completed, validation inconclusive 100.... on different computers.
http://setiathome.berkeley.edu/workunit.php?wuid=473007709
Are these WU really bad or is something wrong with this VLAR KILL version.
Because my wingman looks ok on the CPU version.
Jason G:
--- Quote from: Fred M on 07 Jul 2009, 03:05:14 am ---I got lot of Completed, validation inconclusive 100.... on different computers.
http://setiathome.berkeley.edu/workunit.php?wuid=473007709
Are these WU really bad or is something wrong with this VLAR KILL version.
Because my wingman looks ok on the CPU version.
--- End quote ---
It's hard to tell from a single example, since either result could be closer to 'right'. If you seee more examples of this mismatch, let us know. There could have been some problems in either processing run, host or build, communications, cosmic rays causing one-off bit errors in ram etc. I would be inclined to watch to see how the reissue comes in, but only get worried if it happens a lot (repeatability is important). The redundancy process seems to be doing its job.
efmer (fred):
--- Quote from: Jason G on 07 Jul 2009, 03:52:36 am ---
--- Quote from: Fred M on 07 Jul 2009, 03:05:14 am ---I got lot of Completed, validation inconclusive 100.... on different computers.
http://setiathome.berkeley.edu/workunit.php?wuid=473007709
Are these WU really bad or is something wrong with this VLAR KILL version.
Because my wingman looks ok on the CPU version.
--- End quote ---
It's hard to tell from a single example, since either result could be closer to 'right'. If you seee more examples of this mismatch, let us know. There could have been some problems in either processing run, host or build, communications, cosmic rays causing one-off bit errors in ram etc. I would be inclined to watch to see how the reissue comes in, but only get worried if it happens a lot (repeatability is important). The redundancy process seems to be doing its job.
--- End quote ---
http://setiathome.berkeley.edu/show_host_detail.php?hostid=4955000Got hundreds of them on two computers XP X64 with 295 cards.
Driver: GeForce/ION Release 186
So this got me worried, got another computer without any problems, but it takes for ever to upload and see the validations....
Jason G:
Since I haven't seen reports of validation issues with the build, I would suggest to begin some basic checks without boinc running, to eliminate some possible issues. That might include sytem memory , temps, OC backoff, normal divers checks etc .
For the Video Card I use AtiTool (http://www.techpowerup.com/atitool) to scan for artefacts (Yes it does so work on nVidia cards! ;) ). Even If that goes OKay for an hours running (without any artefacts / beeping at you in 'Scan for Artefacts Mode'), I would double check for known issues with those drivers/cards too (especially CUDA related), maybe there is something there that may warrant looking at another version.
efmer (fred):
--- Quote from: Jason G on 07 Jul 2009, 06:14:24 am ---
Since I haven't seen reports of validation issues with the build, I would suggest to begin some basic checks without boinc running, to eliminate some possible issues. That might include sytem memory , temps, OC backoff, normal divers checks etc .
For the Video Card I use AtiTool (http://www.techpowerup.com/atitool) to scan for artefacts (Yes it does so work on nVidia cards! ;) ). Even If that goes OKay for an hours running (without any artefacts / beeping at you in 'Scan for Artefacts Mode'), I would double check for known issues with those drivers/cards too (especially CUDA related), maybe there is something there that may warrant looking at another version.
--- End quote ---
But it seem highly unlikely the this happens on two different computers with different brand 295 cards.
Navigation
[0] Message Index
[#] Next page
Go to full version