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Crun-chi Volunteer tester
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Joined: 25 Nov 09 Posts: 3208 ID: 50683 Credit: 135,132,479 RAC: 57,320
                         
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When SGS is found then Boinc time will be doubled as credits.
I run LLR test from prpnet client and client finished non prime and priime WU in same time, but Boinc need double time.
So I need answer ( is somebody know)
Will Boinc calculate WU prime two times slower, or when come to the and start again to verify that WU is prime?
Thanks for answer
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92*10^1439761-1 NEAR-REPDIGIT PRIME :) :) :)
4 * 650^498101-1 CRUS PRIME
2022202116^131072+1 GENERALIZED FERMAT
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Honza Volunteer moderator Volunteer tester Project scientist Send message
Joined: 15 Aug 05 Posts: 1952 ID: 352 Credit: 6,016,767,981 RAC: 1,578,906
                                      
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I *think* that when PRP is found on SGS, BOINC will test both +1 and -1 form.
On PRPNet, we need to do such test manually.
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Crun-chi Volunteer tester
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Joined: 25 Nov 09 Posts: 3208 ID: 50683 Credit: 135,132,479 RAC: 57,320
                         
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Thanks Honza
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92*10^1439761-1 NEAR-REPDIGIT PRIME :) :) :)
4 * 650^498101-1 CRUS PRIME
2022202116^131072+1 GENERALIZED FERMAT
Proud member of team Aggie The Pew. Go Aggie! |
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I have a theory.
BOINC checks -1, if it finds a prime, then it automatically checks +1.
PPR may be loaded with the +1 that were not checked since the -1 was not a Prime? |
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Scott Brown Volunteer moderator Project administrator Volunteer tester Project scientist
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Joined: 17 Oct 05 Posts: 2382 ID: 1178 Credit: 17,979,337,910 RAC: 12,412,155
                                                
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PPR may be loaded with the +1 that were not checked since the -1 was not a Prime?
A good theory, but unfortunately incorrect as can be seen from the list of found primes in the SG search on PRPnet, which are all of the -1 variety. I believe that Honza is correct that the +1 is manually tested in PRPnet.
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Michael Goetz Volunteer moderator Project administrator
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Joined: 21 Jan 10 Posts: 13956 ID: 53948 Credit: 393,160,197 RAC: 187,115
                               
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The BOINC SGS project is configured to send out "twin" WUs, which causes LLR to automatically do the -1 form first, then, if -1 is prime, also check the +1 form. (It's possible other twin forms are also sent out as WUs.)
So if a prime is found, two tests are done.
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Both Boinc and PRPNet will check -1 and if it is a prime +1 will be tested also by the client.
The k*2^(n+-1)-1 will be done by Boinc server. On PRPNet we do those test manually.
Lennart |
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Crun-chi Volunteer tester
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Joined: 25 Nov 09 Posts: 3208 ID: 50683 Credit: 135,132,479 RAC: 57,320
                         
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So if Boinc find prime on SGS then when WU reach end, will start crunch again same WU. That will explain why crunch time is doubled :)
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92*10^1439761-1 NEAR-REPDIGIT PRIME :) :) :)
4 * 650^498101-1 CRUS PRIME
2022202116^131072+1 GENERALIZED FERMAT
Proud member of team Aggie The Pew. Go Aggie! |
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So if Boinc find prime on SGS then when WU reach end, will start crunch again same WU. That will explain why crunch time is doubled :)
Yes :) |
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Crun-chi Volunteer tester
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Joined: 25 Nov 09 Posts: 3208 ID: 50683 Credit: 135,132,479 RAC: 57,320
                         
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Tnx Lennart!
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92*10^1439761-1 NEAR-REPDIGIT PRIME :) :) :)
4 * 650^498101-1 CRUS PRIME
2022202116^131072+1 GENERALIZED FERMAT
Proud member of team Aggie The Pew. Go Aggie! |
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