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  1. #1
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    PrimeGrid News

    Number Theory Week Challenge Starts September 3rd at 18:00 UT
    To help celebrate Number Theory Week we will be running a 5 day challenge on the 321 Prime Search (LLR) sub-project.Starts September 3rd 18:00:00 UTC and finishes September 8th 18:00:00 UTC.The last prime found on this sub-project was 3*2^11895718-1 on 23rd June 2015. We're now searching n > 13210424.For more information, please see the official challenge thread: http://www.primegrid.com/forum_thread.php?id=7575

    More...

  2. #2
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    321 LLR? There goes my last subTeraBok...


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    -These tasks take a long time, roughly 24 hours each on a I7-4790

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    Quote Originally Posted by vaughan View Post
    -These tasks take a long time, roughly 24 hours each on a I7-4790
    There are two under way, honestly...


  5. #5
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    Come and help me guys, its lonely over at PG 321LLR.

    This sub-project gets a great boost from multi-threading. There is a app_config.xml that allows you to do this.

    <app_config>
    <app>
    <name>llrGCW</name>
    <fraction_done_exact/>
    <max_concurrent>1</max_concurrent>
    </app>
    <app_version>
    <app_name>llrGCW</app_name>
    <cmdline>-t 4</cmdline>
    <avg_ncpus>4</avg_ncpus>
    </app_version>
    <app>
    <name>llrPSP</name>
    <fraction_done_exact/>
    <max_concurrent>1</max_concurrent>
    </app>
    <app_version>
    <app_name>llrPSP</app_name>
    <cmdline>-t 4</cmdline>
    <avg_ncpus>4</avg_ncpus>
    </app_version>
    <app>
    <name>llrPPSE</name>
    <fraction_done_exact/>
    <max_concurrent>4</max_concurrent>
    </app>
    <app_version>
    <app_name>llrPPSE</app_name>
    <cmdline>-t 1</cmdline>
    <avg_ncpus>1</avg_ncpus>
    </app_version>
    <app>
    <name>llr321</name>
    <fraction_done_exact/>
    <max_concurrent>1</max_concurrent>
    </app>
    <app_version>
    <app_name>llr321</app_name>
    <cmdline>-t 4</cmdline>
    <avg_ncpus>4</avg_ncpus>
    </app_version>
    <app>
    <name>llrSOB</name>
    <fraction_done_exact/>
    <max_concurrent>1</max_concurrent>
    </app>
    <app_version>
    <app_name>llrSOB</app_name>
    <cmdline>-t 4</cmdline>
    <avg_ncpus>4</avg_ncpus>
    </app_version>
    <app>
    <name>llrSR5</name>
    <fraction_done_exact/>
    <max_concurrent>1</max_concurrent>
    </app>
    <app_version>
    <app_name>llrSR5</app_name>
    <cmdline>-t 4</cmdline>
    <avg_ncpus>4</avg_ncpus>
    </app_version>
    <app>
    <name>llrPPS</name>
    <fraction_done_exact/>
    <max_concurrent>1</max_concurrent>
    </app>
    <app_version>
    <app_name>llrPPS</app_name>
    <cmdline>-t 4</cmdline>
    <avg_ncpus>4</avg_ncpus>
    </app_version>
    <app>
    <name>llrTRP</name>
    <fraction_done_exact/>
    <max_concurrent>1</max_concurrent>
    </app>
    <app_version>
    <app_name>llrTRP</app_name>
    <cmdline>-t 4</cmdline>
    <avg_ncpus>4</avg_ncpus>
    </app_version>
    <app>
    <name>llrTPS</name>
    <fraction_done_exact/>
    <max_concurrent>1</max_concurrent>
    </app>
    <app_version>
    <app_name>llrTPS</app_name>
    <cmdline>-t 4</cmdline>
    <avg_ncpus>4</avg_ncpus>
    </app_version>
    </app_config>

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    Why don't you write a app_config that lets you crunch PRP-net too? This app_config contains all BOINC subprojects, AFAICS..
    Judged by the results presented by WUProp the best 321LLR results -computation time-wise- can be obtained by turning hyper-threading off btw, both for Ryzen as for Intel i-7s and Xeon's.

    BTW: four are under way now. The first two being held up by a sneaky windows-update that re-started my computer, but not BOINC of course...
    There's even one waiting for validation right now!
    Last edited by Dirk Broer; 09-07-2017 at 04:51 PM.


  7. #7
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    Three of us with a score now


  8. #8
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    Quote Originally Posted by Dirk Broer View Post
    Why don't you write a app_config that lets you crunch PRP-net too? This app_config contains all BOINC subprojects, AFAICS..
    Judged by the results presented by WUProp the best 321LLR results -computation time-wise- can be obtained by turning hyper-threading off btw, both for Ryzen as for Intel i-7s and Xeon's.
    PRP-net, I don't know.
    Re - hyper-threading = that is why avg_ncpus is 4 not 8. Adjust as required if you have >4 cores.

  9. #9
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    Quote Originally Posted by vaughan View Post
    Re - hyper-threading = that is why avg_ncpus is 4 not 8. Adjust as required if you have >4 cores.
    I was under the impression that you need to disable the hyper-threading in the BIOS, so that each thread has double the L1, L2 and L3 cache as compared to a situation where hyper-threading is active.


  10. #10
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    Not necessary Dirk. Plenty of discussion on for/against hyperthreading in the PG forum.

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