Shouldn't time_to_checkpoint return true prior to BOINC suspending the task? Then, only after checkpoint_completed is set, actually suspend the task? Or, is it up to the application to do a checkpoint by checking the boinc_status and doing a checkpoint even it not asked to do so when BOINC is suspending the task? Otherwise, a couple minutes of work would be lost on average every time it suspends. (5 minutes per checkpoint and switching between 2 projects every hour = 2.5 minutes lost on average. For long tasks, that could add up to a lot of time.) If it is the developers job to checkpoint on suspend, I would suggest adding that code to the sample apps as startup projects often use the uppercase sample apps as a template for their own code.
Note: This topic started on BOINC_ALPHA, but I felt BOINC_DEV was a more appropriate place to get more clarification and/or expand the discussion. Jon Sonntag [email protected] > -----Original Message----- > From: [email protected] [mailto:boinc_alpha- > [email protected]] On Behalf Of David Anderson > Sent: Monday, July 16, 2012 2:28 PM > To: [email protected] > Subject: Re: [boinc_alpha] Tasks resume with same fraction done > > Tasks resume from wherever they last checkpointed. > This is true whether you install a new version, or simply stop/start the client. > -- David > > On 16-Jul-2012 7:21 AM, Jan Pillár wrote: > > Hi, > > > > > > I have a question about installing new version of BOINC over older one > > - tasks should resume with same fraction done. Should the tasks start > > with exactly the same fraction done or is there an acceptable tolerance? > > > > For example, before installation of new version my tasks were at 34 %, > > after installation they were at 31 %. Is that OK? Does it have > > anything to do with "Task checkpoint to disk" settings? > > > > Kind Regards, > > > > Jan _______________________________________________ > boinc_alpha > > mailing list [email protected] > > http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_alpha To > > unsubscribe, visit the above URL and (near bottom of page) enter your > email address. > > > > _______________________________________________ > boinc_alpha mailing list > [email protected] > http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_alpha > To unsubscribe, visit the above URL and > (near bottom of page) enter your email address. _______________________________________________ boinc_dev mailing list [email protected] http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_dev To unsubscribe, visit the above URL and (near bottom of page) enter your email address.
