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post #81 of 89 (permalink) Old 07-01-2017, 07:03 AM
2+2=5
 
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I will probably keep plugging away at the old app.  Hate to see the rest of that range untested (even though all the previously known pairs were found), since most people will move on to the new search. ;)

 

I wonder if the new app is optimized for the larger data set.  This search range is 100 Quintillion vs the previous search which was 18 Quintillion (plus a few hundred quadrillion) :D 



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post #82 of 89 (permalink) Old 07-01-2017, 07:20 AM - Thread Starter
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The new one runs a lot longer, at least the CPU version.


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post #83 of 89 (permalink) Old 07-04-2017, 10:27 AM
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Once I wrap up some Collatz tasks, I will be back crunching the the 2^64 app.  No surprise that nearly everyone moved on to the new app. 

 

The project admin has added some additional incentive to crunch the 2^64 app. Credits for the old application (search up to 2^64) doubled

Quote:

 

Amicable Numbers: Credits for the old application (search up to 2^64) doubled

It's sad to see everyone leave the old (and unfinished) application "Amicable Numbers up to 2^64" so I decided to double credit points for it.



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post #84 of 89 (permalink) Old 07-04-2017, 12:15 PM
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People left since it's CPU only now for the old app. To be expected really.


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post #85 of 89 (permalink) Old 07-04-2017, 12:22 PM
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Quote:
Originally Posted by mmonnin View Post

People left since it's CPU only now for the old app. To be expected really.

 

I didn't realize the 2^64 tasks were CPU only now.  I was getting ready to fire up 12x tasks on my 1070.

 

 CPU only does make more sense, with the massive amount of CPU overhead that I saw running 12x GPU tasks.



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post #86 of 89 (permalink) Old 07-04-2017, 03:59 PM
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I just started running this today on my i3. CPU only tasks, but something seems strange. Boinc manager says that I'm running a single Amicable numbers multi threaded task using 4 CPU's which is the total number of threads i3's have....but heres the kicker....3 Primegrid tasks are also running at the same time, which would be 7 threads on a 4 thread CPU. headscratch.gif So either Amicable numbers is really only using 1 thread while saying it's using 4, or my CPU is performing an incredible juggling act.


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post #87 of 89 (permalink) Old 07-04-2017, 04:34 PM
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It might be performing a juggling act.  I believe that it is possible for BOINC to over commit CPUs if one of the projects is a multi-threaded project.  You can also select the number of CPUs to use in the Amicable Numbers Preferences.  What does it look like in htop?



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