https://gitlab.inria.fr/cado-nfs/cado-nfs
Tip revision: 6c58bf04abc5a90453a0a17dc222cfa836604f22 authored by Lionel Muller on 25 October 2011, 13:23:44 UTC
switch mono-thread by default in polyselect2
switch mono-thread by default in polyselect2
Tip revision: 6c58bf0
params.c69
###########################################################################
# Parameter file for Cado-NFS
###########################################################################
# See params/params.c91 for an example which contains some documentation.
# Anything after a # is a comment, until end of line.
# Any empty line is ignored
#
#
# Each parameter should be on an individual line, like
# param0=42.17
#
###########################################################################
# General parameters
###########################################################################
# Sample parameter file for a 68/69-digit gnfs input
# Warning: the parameters here are not claimed to be optimal!
# Example: cadofactor.pl wdir=... name=... n=...
name=c69
parallel=1 # do we use parallel computation?
delay=30 # time in seconds between two checks
machines=mach_desc # file describing available computers for parallel
# computation
###########################################################################
# Polynomial selection with Kleinjung's algorithm
###########################################################################
degree=4 # degree of the algebraic polynomial
kjdelay=30 # time between two checks
selectnice=4 # nice level for selection
# on the test number
# 316227766016876889247891683315809882613302287311747247733939854383731
# we get
# lognorm: 25.08, alpha: -3.73 E=21.35
# Murphy's E(Bf=10000000,Bg=5000000,area=1.00e+16)=6.48e-07
## Parameters of polyselect
kjadmax=5000 # max value for lc(f)
kjadrange=1000 # individual tasks
kjkmax=17 # rotation is bounded by 2^kmax
kjincr=60 # forced divisor of lc(f)
kjP=5000 # choose lc(g) with two prime factors in [P,2P]
###########################################################################
# Sieve
###########################################################################
# (r,a) means rational or algebraic side
# rlim/alim is the bound for sieving
# lpbr/lpba is the (base 2 log of the) large prime bound
# mfbr/mfba is the (base 2 log of the) limit for the cofactor we try to
# split into large primes.
# rlambda/alambda is the early-abort ratio: if after sieving the
# approximate norm is more than
# lambda times lpb, we reject.
rlim=100000
alim=200000
lpbr=22
lpba=22
mfbr=24
mfba=44
rlambda=1.2
alambda=2.2
I=11 # Sieving range in lattice siever
qmin=200000 # Start of the special-q range
qrange=5000 # The size of an elementary sieving task
firstcheck=326000 # Try filtering only up from that many relations
sievenice=10 # nice level for the sieving jobs
sieve_max_threads=2
###########################################################################
# Filtering
###########################################################################
excessratio=1.01 # minimal excess we want before pruning
# (don't start merge otherwise)
keeppurge=160 # maximal excess wanted after purge
# (purge shrinks if needed)
keep=160 # excess wanted after merge
maxlevel=15
cwmax=100
rwmax=100
ratio=1.1
bwstrat=3
###########################################################################
# Linear algebra
###########################################################################
bwmt=2x2 # Multithreading level of Block-Wiedemann ; Use
# <m>x<n> for bwc, or only one integer for bw.
# Note that this will be substituted with 1x1
# unless PTHREADS have been enabled.
bwc_interval=100 # checkpointing interval for bwc.
###########################################################################
# Characters
###########################################################################
nkermax=30 # maximal size of computed kernel
nchar=50 # number of characters