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Old 2019-01-31, 16:26   #1
cubaq
 
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Mar 2016

2·29 Posts
Default meta poly for Cxxx ?

I am working on C156,and at least two other C156 are in line (none of them are special form).
I am using yafu without Msieve (ini file below).
Is it possible to use some existing poly dedicated for C156 (I.E. this one) and decrease sieve time
instead of spending another ~35 CPU-hours to find one.
If not - how it will fail: at once, during sieve, atlinear, or (not this one please) in sqrt stage.
If yes - how to create nfs.dat.p entry when values of norm,alpha and rroots are unknown; I would create nfs.job and nfs.fb myself but why the poly's in those files are different.


Thanks in advance,

cubaq

PS. yafu.ini:
B1ecm=11000
B1pm1=100000
B1pp1=20000
rhomax=1000
threads=8
pretest_ratio=0.25
%ggnfs_dir=D:\ggnfs\
ggnfs_dir=D:/ggnfs/
R=1
%ecm_path=..\Gmp-Ecm\ecm.exe
ecm_path=..\Gmp-Ecm\ecm
tune_info= Intel(R) Xeon(R) CPU E5-4650 0 @2.70GHz,LINUX64,1.73786e-05,0.200412,0.400046,0.0987873,98.8355,2699.98


session.log (partial)
01/31/19 11:53:07 v1.34.5 @ WLODEK-KOMPUTER,System/Build Info:
Using GMP-ECM 6.3, Powered by GMP 5.1.1
cached 78498 primes. pmax = 999983
detected Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz
detected L1 = 32768 bytes, L2 = 8388608 bytes, CL = 64bytes
measured cpu frequency ~= 3565.667100
using 20 random witnesses for Rabin-Miller PRP checks

Last fiddled with by cubaq on 2019-01-31 at 16:35
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