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World Community Grid Forums
Category: Support
Forum: Suggestions / Feedback
Thread: RFE - suspend calculation when laptop battery is below certain percentage |
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Thread Status: Active Total posts in this thread: 6
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pgosselink
Cruncher Joined: Nov 15, 2005 Post Count: 3 Status: Offline Project Badges: 
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I couldn't find whether somebody already made the following observation and request for enhancement.
I noticed that my laptop battery takes much longer (a few hours) to charge to 100% when computation is on (as the laptop is AC connected). I wish to charge my laptop as fast as possible. Therefore, I would like an additional option in the 'preferences' to suspend calculation when battery is below a certain percentage (even though it is on AC power) |
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ryan222h
Senior Cruncher Joined: Sep 4, 2006 Post Count: 425 Status: Offline |
You can always pause BOINC when your battery needs charging :)
----------------------------------------If you care about battery longetivity, I would recommend either removing the battery when doing WCG, or not doing WCG when the battery is installed in your laptop. The heat generated by the cpu will fry your battery in a matter of months to possibly a year  |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
Hi pgosselink,
Had been pondering on how to give a workaround to your issue. Had not spend thought that computers that are on, are slow in battery charging, but can see that the PSU can deliver only so much current. If the reconnect to juice is after a full power cycle, then you can tell BOINC to not start computing until X minutes after power-up in the configuration file. If it's after just a walkabout the office [meeting room visit or the like to present something], then the snooze button will give 60 minutes pause. For the present, BOINC only detects íf on mains or not, but a percentage charge would be hugely complicated given the zillion different computer makes there are around, not to speak of the various operating systems. Trouble with BOINC is, it has to work on all these OSses from 1 code base compile, i.e. it would a feature ''maybe'' working on Windows, but then not working on Linux or Mac. --//-- |
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pgosselink
Cruncher Joined: Nov 15, 2005 Post Count: 3 Status: Offline Project Badges:
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I appreciate the difficulty in matching the cross platform requirement.
The partial workaround of delaying WCG after a restart is something I have already implemented. Thanks Anyway, it is request for enhancement not a demand for enhancement. If it would be implemented it would also match the request I have seen before where it was requested the computation would not be interrupted by a short walk between rooms with a laptop. Pieter |
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
The LAIM [leave application in memory] feature would take care of that. Between unplugging and replugging, BOINC would stop, detecting it's on battery, but the science would not unload. With CEP2 models that's saving a few to more hours, with checkpoints far apart. Guess you already discovered that preference, but if not...
--//-- |
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pgosselink
Cruncher Joined: Nov 15, 2005 Post Count: 3 Status: Offline Project Badges:
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Although snooze (for 1 or 2 hours) and delay at startup works fin, it doesn't match 'suspend if < X% charge' for flexibility and transparency.
The 'Battery Percentage' is a system value that seems to be available for (some) programs on Windows systems, according to the following references: http://csapps.blogspot.com/2008/07/battery-status-monitor.html http://channel9.msdn.com/coding4fun/articles/You-Can-Take-It-With-You-Part-1 I suppose the same is true for Unix/Linux, but I am not an expert on that. Pieter |
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