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Number crunching :
How accurate are Time Remaining estimates?
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Send message Joined: 1 Feb 13 Posts: 1 Credit: 1,134,246 RAC: 0 |
I just started using BOINC a few days ago and since then I've noticed a couple of WU's in the task list with estimated finish times that exceeded the deadline. I went ahead and aborted those tasks so my computer would move on to something it could handle within the time allotted. So, how strict are the deadlines and should I continue aborting tasks that my computer won't finish in time? |
Send message Joined: 8 Apr 10 Posts: 25 Credit: 268,525 RAC: 0 |
If you are running de_separation_15_sSgr_1 type WUs my experience is that the remaining time was WAY off (250Hrs est for a 3.5 hour run) . but as I processes more and more the EST time homed in to 3:15:45 and hovered there ... a GOOD Est. However ... If you are running nbody 1.06 My runs say it's a crap shoot. my current run started with an EST time of 59 Hrs ... it has been running for 51.5 (wall time) hrs on 4 CPU's, (the WU is Multi threaded and will run on 4 cpu's at once if it can), it has accumulated 176.5 CPU hours and has an EST remaining time of 44 Hrs. I ASSUME that will be about 44 wall time hours (it's reporting 51% + done) and another 175 CPU hours ... But that's just a guess ...for now ... Ed F |
Send message Joined: 8 May 09 Posts: 3315 Credit: 519,950,233 RAC: 22,029 |
I just started using BOINC a few days ago and since then I've noticed a couple of WU's in the task list with estimated finish times that exceeded the deadline. I went ahead and aborted those tasks so my computer would move on to something it could handle within the time allotted. So, how strict are the deadlines and should I continue aborting tasks that my computer won't finish in time? Boinc make the time determination based on how long YOUR computer takes to run a unit, based on the last X number that you ran AND on the benchmarks that it runs periodically. Let the units run until you get to the day that they are going to be overdue and then abort them if you have too many too finish. Don't worry any aborted units get sent out to another pc automatically. IF you continue to have problems then making the cache smaller will help, less units with the same deadline makes it easier to meet. Running your pc 24/7 will help too, but don't think that you HAVE to do that! People should run Boinc to the extent that they feel comfortable doing it, just remember it WILL impact your electric bill depending on how you ran your pc in the past. Your pc is now running at 100 percent, 100 percent of the time while crunching for Boinc. I have 15 pc's here at my house, I live in Northern VA USA, and they all run 24/7. Most are desktops with added gpu's in them and my electric bill is TWICE what my neighbors are paying!! The point of all this is that Boinc can be set to run only at night, only during the day, whenever you aren't using the pc, pretty much however you want it to, within some limits of course. AND remember too that whatever you do crunch IS making a difference!! We get to the end much faster if everyone is doing something. |
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