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# Parameter file for Cado-NFS
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# 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
#
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# General parameters
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# 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
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# Polynomial selection with Kleinjung's algorithm
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degree=4 # degree of the algebraic polynomial
kjdelay=30 # time between two checks
selectnice=4 # nice level for selection
## Most important parameters of polyselect
kjM=5e12 # maximum norm allowed
kjl=4 # minimal number of primes in lc(g)
kjadmin=1 # min value for lc(f)
kjadmax=1e5 # max value for lc(f)
kjadrange=5e4 # individual tasks
## Other parameters of polyselect
kjkeep=20 # number of preselected polynomials
kjkmax=12 # rotation is bounded by 2^kmax
kjincr=60 # forced divisor of lc(f)
kjpb=256 # bound on primes allowed in lc(g)
kjp0max=1000 # bound on the additional factor in lc(g)
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# Sieve
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# (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=10000 # The size of an elementary sieving task
checkrange=50000 # We check if we have enough after each step
# of that many relations found.
sievenice=10 # nice level for the sieving jobs
sieve_max_threads=2
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# Filtering
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excesspurge=10000 # 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=200 # ???
rwmax=200 # ???
ratio=1.5 # ???
bwstrat=1
# maxpr=???
# maxpa=???
# nrels_dup=???ke
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# Linear algebra
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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.
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# Characters
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nkermax=30 # maximal size of computed kernel
nchar=50 # number of characters