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Old 2022-10-02, 13:53   #1
Cybertronic
 
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Jan 2007
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Default Help, YAFU crashed ...

Hello , I ask for a friend.
His YAFU crashed ever on his Intel 10-Core computer via function factor(N) and siqs(N) after 1min
with N = 4781204549425873518078227751181228510651860798170567851521922504895469663781804717007803998002458130349901261934010767723

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Quote:
10/02/22 14:21:43, Starting factorization of 4781204549425873518078227751181228510651860798170567851521922504895469663781804717007803998002458130349901261934010767723
10/02/22 14:21:43, using pretesting plan: normal
10/02/22 14:21:43, no tune info: using qs/gnfs crossover of 95 digits
10/02/22 14:21:43, no tune info: using qs/snfs crossover of 75 digits
10/02/22 14:21:43, ****************************
10/02/22 14:21:43, starting SIQS on c121: 4781204549425873518078227751181228510651860798170567851521922504895469663781804717007803998002458130349901261934010767723
10/02/22 14:21:43, random seed: 1870126538204460479
On my Ryzen , factor(N) runs normal ... also my yafu crashed for siqs(N)

The latest version is file with 2649088 byte large. (V 2.1)



best wishes

Last fiddled with by Cybertronic on 2022-10-02 at 13:58
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Old 2022-10-02, 14:51   #2
kruoli
 
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"Oliver"
Sep 2017
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Just as a note, running SIQS on a C121 is most likely way beyond optimal. He should try to get GGNFS with YAFU running.

Does his system has problems with smaller numbers, e.g. SIQS of a C90, C100?
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Old 2022-10-02, 14:54   #3
bsquared
 
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I think above 110 or 120 digits it will try to use the triple large prime variation. And it's possible there are intrinsics in use there that are not supported on some processors. It's not a path of the code I test very well because everyone should be using NFS beyond 110 digits.

Try running with -forceDLP on the command line.
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Old 2022-10-02, 15:16   #4
Cybertronic
 
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I don't know about bugs for smaller ones.
I have send ggnfs to him...


Okay ! I have send also this mersenneforum-link to him


Addition: He have no problems for smaller numbers

kruoli: >He should try to get GGNFS with YAFU running.
What are the instructions ?
__________________


He told me "yafu-x64.exe -forceDLP" works stable since 30min.

Last fiddled with by Cybertronic on 2022-10-02 at 16:15
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Old 2022-10-02, 18:30   #5
kruoli
 
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Quote:
Originally Posted by Cybertronic View Post
kruoli: >He should try to get GGNFS with YAFU running.
What are the instructions ?
Download this and dump it into the directory where the YAFU executable is. With the default settings for the GNFS directory, it should use them automagically. You can test that with nfs(10^100+1) etc.
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Old 2022-10-02, 19:17   #6
Cybertronic
 
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@kruoli
He told me, your instructions works fine on his computer.
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