Welcome to MilkyWay@home

GPU tasks resetting


Advanced search

Message boards : Number crunching : GPU tasks resetting
Message board moderation

To post messages, you must log in.

AuthorMessage
ProfileAzmodes

Send message
Joined: 29 Dec 16
Posts: 3
Credit: 574,187,343
RAC: 0
500 million credit badge5 year member badge
Message 66120 - Posted: 15 Jan 2017, 17:46:39 UTC
Last modified: 15 Jan 2017, 17:54:15 UTC

I've recently installed a second graphics card for crunching and I noticed that for GPU-based MW tasks, progress is sometimes unnaturally fast, goes up to 80% (that seems to vary, though), freezes and then the task just resets to 0. The "second run" seems to go off without a hitch, though. The event log makes no mention of this anomaly and there is not computation error logged or the like for the task.

I'm not sure if this is even related to the second GPU (it happens with the original GPU too and I don't have this issue with other BOINC projects).

Could it have something to do with me running 2 tasks on one GPU via the app config file (with the method outlined here)? The new GPU was at around 50% load with 1 task, so I increased that to 2 and now it's 100 without noticeably affecting speed of individual tasks, but due to this problem the improvement in efficiency doesn't seem to be too stellar overall.
ID: 66120 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
bluestang

Send message
Joined: 13 Oct 16
Posts: 106
Credit: 1,051,731,997
RAC: 12
1 billion credit badge5 year member badge
Message 66121 - Posted: 15 Jan 2017, 17:51:11 UTC - in response to Message 66120.  

New tasks are now a bundle of 5 WUs so that why it resets after completing each WU.
ID: 66121 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
ProfileAzmodes

Send message
Joined: 29 Dec 16
Posts: 3
Credit: 574,187,343
RAC: 0
500 million credit badge5 year member badge
Message 66122 - Posted: 15 Jan 2017, 17:55:12 UTC

Well, that was quick and simple. Thanks!
ID: 66122 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote

Message boards : Number crunching : GPU tasks resetting

©2022 Astroinformatics Group